add anim and transitions and re-org lua api scripts

LICENSE

@@ -0,0 +1,373 @@
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+    means
+
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in
+    a separate file or files, that is not Covered Software.
+
+1.8. "License"
+    means this document.
+
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+
+1.10. "Modifications"
+    means any of the following:
+
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+************************************************************************
+
+************************************************************************
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.

README.md

@@ -31,3 +31,11 @@
 @@@@@@@@@@@@@@@@@@@@@@@~ ,@@@,,0@@@@@@@@@@@@@@@@@@@
 @@@@@@@@@@@@@@@@@@@@@@@@,,@@@@@@@@@@@@@@@@@@@@@@@@@
 </pre>
+
+## License
+
+pxl8 is free, open source and permissively licensed! All code in this repository is licensed under:
+
+- Mozilla Public License, Version 2.0 ([LICENSE](LICENSE) or https://mozilla.org/MPL/2.0/)
+
+Third-party dependencies (SDL3, LuaJIT, Fennel, linenoise, microui, miniz) retain their original licenses.

demo/main.fnl

@@ -5,16 +5,24 @@
 (var time 0)
 (var active-demo :logo)
 (var particles nil)
-(var fire-init false)
+(var fire-init? false)
-(var rain-init false)
+(var rain-init? false)
-(var snow-init false)
+(var snow-init? false)
-(var use-famicube-palette false)
+(var use-famicube-palette? false)
 
 (var logo-x 256)
 (var logo-y 148)
 (var logo-dx 100)
 (var logo-dy 80)
 (var logo-sprite nil)
+(var transition nil)
+(var transition-pending nil)
+
+(fn switch-demo [new-demo]
+  (set transition-pending new-demo)
+  (set transition (pxl8.transition_create :pixelate 0.5))
+  (pxl8.transition_set_color transition 0xFF000000)
+  (pxl8.transition_start transition))
 
 (global init (fn []
   (cube3d.init)
@@ -26,24 +34,30 @@
 (global update (fn [dt]
   (set time (+ time dt))
 
-  (when (pxl8.key_pressed "1") (set active-demo :logo))
+  (when transition
-  (when (pxl8.key_pressed "2") (set active-demo :plasma))
+    (pxl8.transition_update transition dt)
-  (when (pxl8.key_pressed "3") (set active-demo :tunnel))
+    (when (pxl8.transition_is_complete transition)
-  (when (pxl8.key_pressed "4") (set active-demo :raster))
+      (when transition-pending
-  (when (pxl8.key_pressed "5")
+        (set active-demo transition-pending)
-    (set active-demo :fire)
+        (set transition-pending nil)
-    (set fire-init false))
+        (when (= active-demo :fire) (set fire-init? false))
-  (when (pxl8.key_pressed "6")
+        (when (= active-demo :rain) (set rain-init? false))
-    (set active-demo :rain)
+        (when (= active-demo :snow) (set snow-init? false)))
-    (set rain-init false))
+      (pxl8.transition_destroy transition)
-  (when (pxl8.key_pressed "7")
+      (set transition nil)))
-    (set active-demo :snow)
+
-    (set snow-init false))
+  (when (pxl8.key_pressed "1") (switch-demo :logo))
-  (when (pxl8.key_pressed "8") (set active-demo :cube3d))
+  (when (pxl8.key_pressed "2") (switch-demo :plasma))
-  (when (pxl8.key_pressed "9") (set active-demo :worldgen))
+  (when (pxl8.key_pressed "3") (switch-demo :tunnel))
+  (when (pxl8.key_pressed "4") (switch-demo :raster))
+  (when (pxl8.key_pressed "5") (switch-demo :fire))
+  (when (pxl8.key_pressed "6") (switch-demo :rain))
+  (when (pxl8.key_pressed "7") (switch-demo :snow))
+  (when (pxl8.key_pressed "8") (switch-demo :cube3d))
+  (when (pxl8.key_pressed "9") (switch-demo :worldgen))
   (when (pxl8.key_pressed "=")
-    (set use-famicube-palette (not use-famicube-palette))
+    (set use-famicube-palette? (not use-famicube-palette?))
-    (local palette-path (if use-famicube-palette "res/palettes/famicube.ase" "res/sprites/pxl8_logo.ase"))
+    (local palette-path (if use-famicube-palette? "res/palettes/famicube.ase" "res/sprites/pxl8_logo.ase"))
     (pxl8.load_palette palette-path))
 
   (case active-demo
@@ -81,32 +95,35 @@
     :fire (do
             (pxl8.clr 0)
             (when particles
-              (when (not fire-init)
+              (when (not fire-init?)
                 (pxl8.particles_clear particles)
                 (pxl8.vfx_fire particles 160 140 100 12)
-                (set fire-init true))
+                (set fire-init? true))
               (pxl8.particles_render particles)))
 
     :rain (do
             (pxl8.clr 0)
             (when particles
-              (when (not rain-init)
+              (when (not rain-init?)
                 (pxl8.particles_clear particles)
                 (pxl8.vfx_rain particles 320 10.0)
-                (set rain-init true))
+                (set rain-init? true))
               (pxl8.particles_render particles)))
 
     :snow (do
             (pxl8.clr 0)
             (when particles
-              (when (not snow-init)
+              (when (not snow-init?)
                 (pxl8.particles_clear particles)
                 (pxl8.vfx_snow particles 320 5.0)
-                (set snow-init true))
+                (set snow-init? true))
               (pxl8.particles_render particles)))
 
     :cube3d (cube3d.frame)
 
     :worldgen (worldgen.frame)
 
-    _ (pxl8.clr 0))))
+    _ (pxl8.clr 0))
+
+  (when transition
+    (pxl8.transition_render transition))))

demo/mod/cube3d.fnl

@@ -4,20 +4,20 @@
 (var angle-x 0)
 (var angle-y 0)
 (var angle-z 0)
-(var auto-rotate true)
+(var auto-rotate? true)
-(var orthographic true)
+(var orthographic? true)
-(var wireframe true)
+(var wireframe? true)
 (var time 0)
 (var zoom 5.0)
 (var texture-id nil)
-(var use-texture false)
+(var use-texture? false)
-(var affine false)
+(var affine? false)
 (var cam-x 0)
 (var cam-y 2)
 (var cam-z 12)
 (var cam-yaw 0)
 (var cam-pitch -0.2)
-(var show-debug-ui false)
+(var show-debug-ui? false)
 (var fps 0)
 (var fps-accumulator 0)
 (var fps-frame-count 0)
@@ -26,19 +26,19 @@
   (set angle-x 0)
   (set angle-y 0)
   (set angle-z 0)
-  (set auto-rotate true)
+  (set auto-rotate? true)
-  (set orthographic true)
+  (set orthographic? true)
-  (set wireframe true)
+  (set wireframe? true)
   (set time 0)
   (set zoom 5.0)
-  (set use-texture false)
+  (set use-texture? false)
-  (set affine false)
+  (set affine? false)
   (set cam-x 0)
   (set cam-y 2)
   (set cam-z 12)
   (set cam-yaw 0)
   (set cam-pitch -0.2)
-  (set show-debug-ui false)
+  (set show-debug-ui? false)
   (set fps 0)
   (set fps-accumulator 0)
   (set fps-frame-count 0)
@@ -87,7 +87,7 @@
 
   (let [wheel-y (pxl8.mouse_wheel_y)]
     (when (and (not= wheel-y 0) (not (pxl8.ui_has_mouse_focus)))
-      (if orthographic
+      (if orthographic?
           (set zoom (math.max 0.5 (math.min (- zoom (* wheel-y 0.2)) 10.0)))
           (let [zoom-speed 0.5
                 forward-x (* (math.sin cam-yaw) wheel-y zoom-speed)
@@ -103,7 +103,7 @@
         right-x (* (math.cos cam-yaw) move-speed dt)
         right-z (* (- (math.sin cam-yaw)) move-speed dt)]
 
-    (if orthographic
+    (if orthographic?
         (do
           (when (pxl8.key_down "w")
             (set zoom (math.max 0.5 (- zoom (* zoom-speed dt)))))
@@ -149,20 +149,20 @@
     (set cam-pitch (math.max -1.5 (math.min cam-pitch 1.5))))
 
   (when (pxl8.key_pressed " ")
-    (set wireframe (not wireframe)))
+    (set wireframe? (not wireframe?)))
   (when (pxl8.key_pressed "f")
-    (set affine (not affine)))
+    (set affine? (not affine?)))
   (when (pxl8.key_pressed "p")
-    (set orthographic (not orthographic)))
+    (set orthographic? (not orthographic?)))
   (when (pxl8.key_pressed "r")
-    (set auto-rotate (not auto-rotate)))
+    (set auto-rotate? (not auto-rotate?)))
   (when (pxl8.key_pressed "t")
-    (set use-texture (not use-texture)))
+    (set use-texture? (not use-texture?)))
   (when (pxl8.key_pressed "F8")
-    (set show-debug-ui (not show-debug-ui))
+    (set show-debug-ui? (not show-debug-ui?))
-    (pxl8.ui_window_set_open "Debug Menu (F8)" show-debug-ui))
+    (pxl8.ui_window_set_open "Debug Menu (F8)" show-debug-ui?))
 
-  (when auto-rotate
+  (when auto-rotate?
     (set angle-x (+ angle-x (* dt 0.7)))
     (set angle-y (+ angle-y (* dt 0.5)))
     (set angle-z (+ angle-z (* dt 0.3)))))
@@ -178,7 +178,7 @@
     (pxl8.set_model model))
 
   (let [vertices (make-cube-vertices)]
-    (if (and use-texture texture-id)
+    (if (and use-texture? texture-id)
         (let [faces (make-cube-faces-with-uvs)]
           (each [_i face-data (ipairs faces)]
             (let [tri-indices face-data.tri
@@ -206,11 +206,11 @@
   (pxl8.clr 0)
 
   (pxl8.clear_zbuffer)
-  (pxl8.set_affine_textures affine)
+  (pxl8.set_affine_textures affine?)
   (pxl8.set_backface_culling true)
-  (pxl8.set_wireframe wireframe)
+  (pxl8.set_wireframe wireframe?)
 
-  (if orthographic
+  (if orthographic?
       (let [size zoom
             aspect (/ (pxl8.get_width) (pxl8.get_height))
             w (* size aspect)
@@ -233,19 +233,19 @@
   (draw-cube [3 1 -7] 0.9 1.2)
   (draw-cube [0 -2 -10] 1.1 -0.7)
 
-  (let [new-state (debug-ui.render {:show-debug-ui show-debug-ui
+  (let [new-state (debug-ui.render {:show-debug-ui show-debug-ui?
                                     :fps fps
-                                    :wireframe wireframe
+                                    :wireframe wireframe?
-                                    :auto-rotate auto-rotate
+                                    :auto-rotate auto-rotate?
-                                    :orthographic orthographic
+                                    :orthographic orthographic?
-                                    :use-texture use-texture
+                                    :use-texture use-texture?
-                                    :affine affine})]
+                                    :affine affine?})]
-    (when (not= new-state.show-debug-ui nil) (set show-debug-ui new-state.show-debug-ui))
+    (when (not= new-state.show-debug-ui nil) (set show-debug-ui? new-state.show-debug-ui))
-    (when (not= new-state.wireframe nil) (set wireframe new-state.wireframe))
+    (when (not= new-state.wireframe nil) (set wireframe? new-state.wireframe))
-    (when (not= new-state.auto-rotate nil) (set auto-rotate new-state.auto-rotate))
+    (when (not= new-state.auto-rotate nil) (set auto-rotate? new-state.auto-rotate))
-    (when (not= new-state.orthographic nil) (set orthographic new-state.orthographic))
+    (when (not= new-state.orthographic nil) (set orthographic? new-state.orthographic))
-    (when (not= new-state.use-texture nil) (set use-texture new-state.use-texture))
+    (when (not= new-state.use-texture nil) (set use-texture? new-state.use-texture))
-    (when (not= new-state.affine nil) (set affine new-state.affine))))
+    (when (not= new-state.affine nil) (set affine? new-state.affine))))
 
 {:init init
  :update update

demo/mod/worldgen.fnl

@@ -2,11 +2,14 @@
 
 (var world nil)
 (var cam-x 1000)
-(local cam-y 64)
+(var cam-y 64)
 (var cam-z 1000)
 (var cam-yaw 0)
 (var cam-pitch 0)
 (var bob-time 0)
+(var velocity-y 0)
+(var grounded? true)
+(var land-squash 0)
 
 (local move-speed 200)
 (local turn-speed 2.0)
@@ -15,6 +18,11 @@
 (local max-pitch 1.5)
 (local cell-size 64)
 (local grid-size 32)
+(local gravity -800)
+(local jump-force 175)
+(local ground-y 64)
+(local land-squash-amount -4)
+(local land-recovery-speed 20)
 
 (fn init []
   (set world (pxl8.world_new))
@@ -72,31 +80,28 @@
       (var move-right 0)
 
       (when (pxl8.key_down "w")
-        (set move-forward (+ move-forward 1))
+        (set move-forward (+ move-forward 1)))
-        (set moving true))
 
       (when (pxl8.key_down "s")
-        (set move-forward (- move-forward 1))
+        (set move-forward (- move-forward 1)))
-        (set moving true))
 
       (when (pxl8.key_down "q")
-        (set move-right (- move-right 1))
+        (set move-right (- move-right 1)))
-        (set moving true))
 
       (when (pxl8.key_down "e")
-        (set move-right (+ move-right 1))
+        (set move-right (+ move-right 1)))
-        (set moving true))
+
+      (set moving (or (not= move-forward 0) (not= move-right 0)))
 
       (var new-x cam-x)
       (var new-z cam-z)
 
       (when moving
-        (let [len (math.sqrt (+ (* move-forward move-forward) (* move-right move-right)))]
+        (let [len (math.sqrt (+ (* move-forward move-forward) (* move-right move-right)))
-          (when (> len 0)
+              norm-forward (/ move-forward len)
-            (let [norm-forward (/ move-forward len)
               norm-right (/ move-right len)]
           (set new-x (+ new-x (* move-delta (+ (* forward-x norm-forward) (* right-x norm-right)))))
-              (set new-z (+ new-z (* move-delta (+ (* forward-z norm-forward) (* right-z norm-right)))))))))
+          (set new-z (+ new-z (* move-delta (+ (* forward-z norm-forward) (* right-z norm-right)))))))
 
       (when (and (>= new-x 0) (<= new-x grid-max)
                  (>= new-z 0) (<= new-z grid-max))
@@ -115,7 +120,24 @@
       (when (pxl8.key_down "down")
         (set cam-pitch (math.max (- max-pitch) (- cam-pitch (* turn-speed dt)))))
 
-      (if moving
+      (when (and (pxl8.key_pressed "space") grounded?)
+        (set velocity-y jump-force)
+        (set grounded? false))
+
+      (set velocity-y (+ velocity-y (* gravity dt)))
+      (set cam-y (+ cam-y (* velocity-y dt)))
+
+      (when (<= cam-y ground-y)
+        (when (not grounded?)
+          (set land-squash land-squash-amount))
+        (set cam-y ground-y)
+        (set velocity-y 0)
+        (set grounded? true))
+
+      (when (< land-squash 0)
+        (set land-squash (math.min 0 (+ land-squash (* land-recovery-speed dt)))))
+
+      (if (and moving grounded?)
           (set bob-time (+ bob-time (* dt bob-speed)))
           (let [target-phase (* (math.floor (/ bob-time math.pi)) math.pi)]
             (set bob-time (+ (* bob-time 0.8) (* target-phase 0.2))))))))
@@ -125,7 +147,7 @@
 
   (when (pxl8.world_is_loaded world)
     (let [bob-offset (* (math.sin bob-time) bob-amount)
-          eye-y (+ cam-y bob-offset)
+          eye-y (+ cam-y bob-offset land-squash)
           forward-x (- (math.sin cam-yaw))
           forward-z (- (math.cos cam-yaw))
           target-x (+ cam-x forward-x)

src/lua/pxl8.lua

@@ -1,534 +1,174 @@
 local ffi = require("ffi")
-local C = ffi.C
+
-local game = _pxl8_game
+local core = require("pxl8.core")
-local gfx = _pxl8_gfx
+local graphics = require("pxl8.graphics")
-local input = _pxl8_input
+local input = require("pxl8.input")
-local ui = _pxl8_ui
+local vfx = require("pxl8.vfx")
+local particles = require("pxl8.particles")
+local tilemap = require("pxl8.tilemap")
+local gfx3d = require("pxl8.gfx3d")
+local math3d = require("pxl8.math")
+local ui = require("pxl8.ui")
+local world = require("pxl8.world")
+local transition = require("pxl8.transition")
+local anim = require("pxl8.anim")
+
+core.init(_pxl8_game, _pxl8_gfx, _pxl8_input, _pxl8_ui)
 
 local pxl8 = {}
 
-function pxl8.clr(color)
+pxl8.get_fps = core.get_fps
-    C.pxl8_clr(gfx, color or 0)
+pxl8.get_width = core.get_width
-end
+pxl8.get_height = core.get_height
-
+pxl8.info = core.info
-function pxl8.pixel(x, y, color)
+pxl8.warn = core.warn
-    if color then
+pxl8.error = core.error
-        C.pxl8_pixel(gfx, x, y, color)
+pxl8.debug = core.debug
-    else
+pxl8.trace = core.trace
-        return C.pxl8_get_pixel(gfx, x, y)
+
-    end
+pxl8.clr = graphics.clr
-end
+pxl8.pixel = graphics.pixel
-
+pxl8.line = graphics.line
-function pxl8.line(x0, y0, x1, y1, color)
+pxl8.rect = graphics.rect
-    C.pxl8_line(gfx, x0, y0, x1, y1, color)
+pxl8.rect_fill = graphics.rect_fill
-end
+pxl8.circle = graphics.circle
-
+pxl8.circle_fill = graphics.circle_fill
-function pxl8.rect(x, y, w, h, color)
+pxl8.text = graphics.text
-    C.pxl8_rect(gfx, x, y, w, h, color)
+pxl8.sprite = graphics.sprite
-end
+pxl8.load_palette = graphics.load_palette
-
+pxl8.load_sprite = graphics.load_sprite
-function pxl8.rect_fill(x, y, w, h, color)
+pxl8.create_texture = graphics.create_texture
-    C.pxl8_rect_fill(gfx, x, y, w, h, color)
+pxl8.upload_atlas = graphics.upload_atlas
-end
+pxl8.gfx_color_ramp = graphics.color_ramp
-
+pxl8.gfx_fade_palette = graphics.fade_palette
-function pxl8.circle(x, y, r, color)
+
-    C.pxl8_circle(gfx, x, y, r, color)
+pxl8.key_down = input.key_down
-end
+pxl8.key_pressed = input.key_pressed
-
+pxl8.key_released = input.key_released
-function pxl8.circle_fill(x, y, r, color)
+pxl8.mouse_wheel_x = input.mouse_wheel_x
-    C.pxl8_circle_fill(gfx, x, y, r, color)
+pxl8.mouse_wheel_y = input.mouse_wheel_y
-end
+pxl8.mouse_x = input.mouse_x
-
+pxl8.mouse_y = input.mouse_y
-function pxl8.text(str, x, y, color)
+
-    C.pxl8_text(gfx, str, x or 0, y or 0, color or 15)
+pxl8.vfx_raster_bars = vfx.raster_bars
-end
+pxl8.vfx_plasma = vfx.plasma
-
+pxl8.vfx_rotozoom = vfx.rotozoom
-function pxl8.sprite(id, x, y, w, h, flip_x, flip_y)
+pxl8.vfx_tunnel = vfx.tunnel
-    C.pxl8_sprite(gfx, id or 0, x or 0, y or 0, w or 16, h or 16, flip_x or false, flip_y or false)
+pxl8.vfx_explosion = vfx.explosion
-end
+pxl8.vfx_fire = vfx.fire
-
+pxl8.vfx_rain = vfx.rain
-function pxl8.get_fps()
+pxl8.vfx_smoke = vfx.smoke
-    return C.pxl8_game_get_fps(game)
+pxl8.vfx_snow = vfx.snow
-end
+pxl8.vfx_sparks = vfx.sparks
-
+pxl8.vfx_starfield = vfx.starfield
-function pxl8.get_width()
+
-    return C.pxl8_gfx_get_width(gfx)
+pxl8.particles_new = particles.new
-end
+pxl8.particles_destroy = particles.destroy
-
+pxl8.particles_clear = particles.clear
-function pxl8.get_height()
+pxl8.particles_emit = particles.emit
-    return C.pxl8_gfx_get_height(gfx)
+pxl8.particles_update = particles.update
-end
+pxl8.particles_render = particles.render
-
+
-function pxl8.load_palette(filepath)
+pxl8.tilesheet_new = tilemap.tilesheet_new
-    return C.pxl8_gfx_load_palette(gfx, filepath)
+pxl8.tilesheet_destroy = tilemap.tilesheet_destroy
-end
+pxl8.tilesheet_load = tilemap.tilesheet_load
-
+pxl8.tilemap_new = tilemap.new
-function pxl8.load_sprite(filepath)
+pxl8.tilemap_destroy = tilemap.destroy
-    local sprite_id = ffi.new("unsigned int[1]")
+pxl8.tilemap_set_tilesheet = tilemap.set_tilesheet
-    local result = C.pxl8_gfx_load_sprite(gfx, filepath, sprite_id)
+pxl8.tilemap_set_tile = tilemap.set_tile
-    if result == 0 then
+pxl8.tilemap_get_tile_id = tilemap.get_tile_id
-        return sprite_id[0]
+pxl8.tilemap_set_camera = tilemap.set_camera
-    else
+pxl8.tilemap_render = tilemap.render
-        return nil, result
+pxl8.tilemap_render_layer = tilemap.render_layer
-    end
+pxl8.tilemap_is_solid = tilemap.is_solid
-end
+pxl8.tilemap_check_collision = tilemap.check_collision
-
+pxl8.tilemap_get_tile_data = tilemap.get_tile_data
-function pxl8.create_texture(pixels, width, height)
+pxl8.tilemap_load_ase = tilemap.load_ase
-    local pixel_data = ffi.new("u8[?]", width * height)
+pxl8.tilemap_set_tile_data = tilemap.set_tile_data
-    for i = 0, width * height - 1 do
+pxl8.TILE_FLIP_X = tilemap.TILE_FLIP_X
-        pixel_data[i] = pixels[i + 1] or 0
+pxl8.TILE_FLIP_Y = tilemap.TILE_FLIP_Y
-    end
+pxl8.TILE_SOLID = tilemap.TILE_SOLID
-    local result = C.pxl8_gfx_create_texture(gfx, pixel_data, width, height)
+pxl8.TILE_TRIGGER = tilemap.TILE_TRIGGER
-    if result < 0 then
+
-        return nil
+pxl8.clear_zbuffer = gfx3d.clear_zbuffer
-    end
+pxl8.set_model = gfx3d.set_model
-    return result
+pxl8.set_view = gfx3d.set_view
-end
+pxl8.set_projection = gfx3d.set_projection
-
+pxl8.set_wireframe = gfx3d.set_wireframe
-function pxl8.upload_atlas()
+pxl8.set_affine_textures = gfx3d.set_affine_textures
-    C.pxl8_gfx_upload_atlas(gfx)
+pxl8.set_backface_culling = gfx3d.set_backface_culling
-end
+pxl8.draw_triangle_3d = gfx3d.draw_triangle
-
+pxl8.draw_triangle_3d_textured = gfx3d.draw_triangle_textured
-function pxl8.info(msg)
+pxl8.draw_line_3d = gfx3d.draw_line
-    C.pxl8_lua_info(msg)
+
-end
+pxl8.mat4_identity = math3d.mat4_identity
-
+pxl8.mat4_multiply = math3d.mat4_multiply
-function pxl8.warn(msg)
+pxl8.mat4_translate = math3d.mat4_translate
-    C.pxl8_lua_warn(msg)
+pxl8.mat4_rotate_x = math3d.mat4_rotate_x
-end
+pxl8.mat4_rotate_y = math3d.mat4_rotate_y
-
+pxl8.mat4_rotate_z = math3d.mat4_rotate_z
-function pxl8.error(msg)
+pxl8.mat4_scale = math3d.mat4_scale
-    C.pxl8_lua_error(msg)
+pxl8.mat4_ortho = math3d.mat4_ortho
-end
+pxl8.mat4_perspective = math3d.mat4_perspective
-
+pxl8.mat4_lookat = math3d.mat4_lookat
-function pxl8.debug(msg)
+pxl8.bounds = math3d.bounds
-    C.pxl8_lua_debug(msg)
+
-end
+pxl8.ui_button = ui.button
-
+pxl8.ui_checkbox = ui.checkbox
-function pxl8.trace(msg)
+pxl8.ui_has_mouse_focus = ui.has_mouse_focus
-    C.pxl8_lua_trace(msg)
+pxl8.ui_indent = ui.indent
-end
+pxl8.ui_label = ui.label
-
+pxl8.ui_layout_row = ui.layout_row
-function pxl8.key_down(key)
+pxl8.ui_window_begin = ui.window_begin
-    return C.pxl8_key_down(input, key)
+pxl8.ui_window_end = ui.window_end
-end
+pxl8.ui_window_set_open = ui.window_set_open
-
+
-function pxl8.key_pressed(key)
+pxl8.world_new = world.new
-    return C.pxl8_key_pressed(input, key)
+pxl8.world_destroy = world.destroy
-end
+pxl8.world_load = world.load
-
+pxl8.world_render = world.render
-function pxl8.key_released(key)
+pxl8.world_unload = world.unload
-    return C.pxl8_key_released(input, key)
+pxl8.world_is_loaded = world.is_loaded
-end
+pxl8.world_generate = world.generate
-
+pxl8.world_apply_textures = world.apply_textures
-function pxl8.mouse_wheel_x()
+pxl8.procgen_tex = world.procgen_tex
-    return C.pxl8_mouse_wheel_x(input)
+pxl8.PROCGEN_CAVE = world.PROCGEN_CAVE
-end
+pxl8.PROCGEN_DUNGEON = world.PROCGEN_DUNGEON
-
+pxl8.PROCGEN_TERRAIN = world.PROCGEN_TERRAIN
-function pxl8.mouse_wheel_y()
+
-    return C.pxl8_mouse_wheel_y(input)
+pxl8.transition_create = transition.create
-end
+pxl8.transition_destroy = transition.destroy
-
+pxl8.transition_get_progress = transition.get_progress
-function pxl8.mouse_x()
+pxl8.transition_is_active = transition.is_active
-    return C.pxl8_mouse_x(input)
+pxl8.transition_is_complete = transition.is_complete
-end
+pxl8.transition_render = transition.render
-
+pxl8.transition_reset = transition.reset
-function pxl8.mouse_y()
+pxl8.transition_set_color = transition.set_color
-    return C.pxl8_mouse_y(input)
+pxl8.transition_set_reverse = transition.set_reverse
-end
+pxl8.transition_start = transition.start
-
+pxl8.transition_stop = transition.stop
-function pxl8.vfx_raster_bars(bars, time)
+pxl8.transition_update = transition.update
-    local c_bars = ffi.new("pxl8_raster_bar[?]", #bars)
+
-    for i, bar in ipairs(bars) do
+pxl8.anim_create = anim.create
-        c_bars[i-1].base_y = bar.base_y or 0
+pxl8.anim_create_from_ase = anim.create_from_ase
-        c_bars[i-1].amplitude = bar.amplitude or 10
+pxl8.anim_destroy = anim.destroy
-        c_bars[i-1].height = bar.height or 5
+pxl8.anim_add_state = anim.add_state
-        c_bars[i-1].speed = bar.speed or 1.0
+pxl8.anim_get_current_frame = anim.get_current_frame
-        c_bars[i-1].phase = bar.phase or 0
+pxl8.anim_get_current_frame_id = anim.get_current_frame_id
-        c_bars[i-1].color = bar.color or 15
+pxl8.anim_get_state = anim.get_state
-        c_bars[i-1].fade_color = bar.fade_color or bar.color or 15
+pxl8.anim_has_state_machine = anim.has_state_machine
-    end
+pxl8.anim_is_complete = anim.is_complete
-    C.pxl8_vfx_raster_bars(gfx, c_bars, #bars, time)
+pxl8.anim_is_playing = anim.is_playing
-end
+pxl8.anim_pause = anim.pause
-
+pxl8.anim_play = anim.play
-function pxl8.vfx_plasma(time, scale1, scale2, palette_offset)
+pxl8.anim_render_sprite = anim.render_sprite
-    C.pxl8_vfx_plasma(gfx, time, scale1 or 0.05, scale2 or 0.03, palette_offset or 0)
+pxl8.anim_reset = anim.reset
-end
+pxl8.anim_set_frame = anim.set_frame
-
+pxl8.anim_set_loop = anim.set_loop
-function pxl8.vfx_rotozoom(angle, zoom, cx, cy)
+pxl8.anim_set_reverse = anim.set_reverse
-    C.pxl8_vfx_rotozoom(gfx, angle, zoom, cx or pxl8.get_width()/2, cy or pxl8.get_height()/2)
+pxl8.anim_set_speed = anim.set_speed
-end
+pxl8.anim_set_state = anim.set_state
-
+pxl8.anim_stop = anim.stop
-function pxl8.vfx_tunnel(time, speed, twist)
+pxl8.anim_update = anim.update
-    C.pxl8_vfx_tunnel(gfx, time, speed or 2.0, twist or 0.5)
-end
-
-function pxl8.particles_new(max_count)
-    return C.pxl8_particles_create(max_count or 1000)
-end
-
-function pxl8.particles_destroy(ps)
-    C.pxl8_particles_destroy(ps)
-end
-
-function pxl8.particles_clear(ps)
-    C.pxl8_particles_clear(ps)
-end
-
-function pxl8.particles_emit(ps, count)
-    C.pxl8_particles_emit(ps, count or 1)
-end
-
-function pxl8.particles_update(ps, dt)
-    C.pxl8_particles_update(ps, dt)
-end
-
-function pxl8.particles_render(ps)
-    C.pxl8_particles_render(ps, gfx)
-end
-
-function pxl8.vfx_explosion(ps, x, y, color, force)
-    C.pxl8_vfx_explosion(ps, x, y, color or 15, force or 200.0)
-end
-
-function pxl8.vfx_fire(ps, x, y, width, palette_start)
-    C.pxl8_vfx_fire(ps, x, y, width or 50, palette_start or 64)
-end
-
-function pxl8.vfx_rain(ps, width, wind)
-    C.pxl8_vfx_rain(ps, width or pxl8.get_width(), wind or 0.0)
-end
-
-function pxl8.vfx_smoke(ps, x, y, color)
-    C.pxl8_vfx_smoke(ps, x, y, color or 8)
-end
-
-function pxl8.vfx_snow(ps, width, wind)
-    C.pxl8_vfx_snow(ps, width or pxl8.get_width(), wind or 10.0)
-end
-
-function pxl8.vfx_sparks(ps, x, y, color)
-    C.pxl8_vfx_sparks(ps, x, y, color or 15)
-end
-
-function pxl8.vfx_starfield(ps, speed, spread)
-    C.pxl8_vfx_starfield(ps, speed or 5.0, spread or 500.0)
-end
-
-function pxl8.gfx_color_ramp(start, count, from_color, to_color)
-    C.pxl8_gfx_color_ramp(gfx, start, count, from_color, to_color)
-end
-
-function pxl8.gfx_fade_palette(start, count, amount, target_color)
-    C.pxl8_gfx_fade_palette(gfx, start, count, amount, target_color)
-end
-
-function pxl8.tilesheet_new(tile_size)
-    return C.pxl8_tilesheet_create(tile_size or 16)
-end
-
-function pxl8.tilesheet_destroy(tilesheet)
-    C.pxl8_tilesheet_destroy(tilesheet)
-end
-
-function pxl8.tilesheet_load(tilesheet, filepath)
-    return C.pxl8_tilesheet_load(tilesheet, filepath, gfx)
-end
-
-function pxl8.tilemap_new(width, height, tile_size)
-    return C.pxl8_tilemap_create(width, height, tile_size or 16)
-end
-
-function pxl8.tilemap_destroy(tilemap)
-    C.pxl8_tilemap_destroy(tilemap)
-end
-
-function pxl8.tilemap_set_tilesheet(tilemap, tilesheet)
-    return C.pxl8_tilemap_set_tilesheet(tilemap, tilesheet)
-end
-
-function pxl8.tilemap_set_tile(tilemap, layer, x, y, tile_id, flags)
-    C.pxl8_tilemap_set_tile(tilemap, layer or 0, x, y, tile_id or 0, flags or 0)
-end
-
-function pxl8.tilemap_get_tile_id(tilemap, layer, x, y)
-    return C.pxl8_tilemap_get_tile_id(tilemap, layer or 0, x, y)
-end
-
-function pxl8.tilemap_set_camera(tilemap, x, y)
-    C.pxl8_tilemap_set_camera(tilemap, x, y)
-end
-
-function pxl8.tilemap_render(tilemap)
-    C.pxl8_tilemap_render(tilemap, gfx)
-end
-
-function pxl8.tilemap_render_layer(tilemap, layer)
-    C.pxl8_tilemap_render_layer(tilemap, gfx, layer)
-end
-
-function pxl8.tilemap_is_solid(tilemap, x, y)
-    return C.pxl8_tilemap_is_solid(tilemap, x, y)
-end
-
-function pxl8.tilemap_check_collision(tilemap, x, y, w, h)
-    return C.pxl8_tilemap_check_collision(tilemap, x, y, w, h)
-end
-
-local tile_data = setmetatable({}, {__mode = "k"})
-
-function pxl8.tilemap_get_tile_data(tilemap, tile_id)
-    if not tilemap or tile_id == 0 then return nil end
-    if not tile_data[tilemap] then return nil end
-    return tile_data[tilemap][tile_id]
-end
-
-function pxl8.tilemap_load_ase(tilemap, filepath, layer)
-    return C.pxl8_tilemap_load_ase(tilemap, filepath, layer or 0)
-end
-
-function pxl8.tilemap_set_tile_data(tilemap, tile_id, data)
-    if not tilemap or tile_id == 0 then return end
-    if not tile_data[tilemap] then tile_data[tilemap] = {} end
-    tile_data[tilemap][tile_id] = data
-end
-
-pxl8.TILE_FLIP_X = 1
-pxl8.TILE_FLIP_Y = 2
-pxl8.TILE_SOLID = 4
-pxl8.TILE_TRIGGER = 8
-
-function pxl8.clear_zbuffer()
-    C.pxl8_3d_clear_zbuffer(gfx)
-end
-
-function pxl8.set_model(mat)
-    C.pxl8_3d_set_model(gfx, mat)
-end
-
-function pxl8.set_view(mat)
-    C.pxl8_3d_set_view(gfx, mat)
-end
-
-function pxl8.set_projection(mat)
-    C.pxl8_3d_set_projection(gfx, mat)
-end
-
-function pxl8.set_wireframe(wireframe)
-    C.pxl8_3d_set_wireframe(gfx, wireframe)
-end
-
-function pxl8.set_affine_textures(affine)
-    C.pxl8_3d_set_affine_textures(gfx, affine)
-end
-
-function pxl8.set_backface_culling(culling)
-    C.pxl8_3d_set_backface_culling(gfx, culling)
-end
-
-function pxl8.draw_triangle_3d(v0, v1, v2, color)
-    local vec0 = ffi.new("pxl8_vec3", {x = v0[1], y = v0[2], z = v0[3]})
-    local vec1 = ffi.new("pxl8_vec3", {x = v1[1], y = v1[2], z = v1[3]})
-    local vec2 = ffi.new("pxl8_vec3", {x = v2[1], y = v2[2], z = v2[3]})
-    C.pxl8_3d_draw_triangle_raw(gfx, vec0, vec1, vec2, color)
-end
-
-function pxl8.draw_triangle_3d_textured(v0, v1, v2, uv0, uv1, uv2, texture_id)
-    local vec0 = ffi.new("pxl8_vec3", {x = v0[1], y = v0[2], z = v0[3]})
-    local vec1 = ffi.new("pxl8_vec3", {x = v1[1], y = v1[2], z = v1[3]})
-    local vec2 = ffi.new("pxl8_vec3", {x = v2[1], y = v2[2], z = v2[3]})
-    C.pxl8_3d_draw_triangle_textured(gfx, vec0, vec1, vec2,
-        uv0[1], uv0[2], uv1[1], uv1[2], uv2[1], uv2[2], texture_id)
-end
-
-function pxl8.draw_line_3d(p0, p1, color)
-    local vec0 = ffi.new("pxl8_vec3", {x = p0[1], y = p0[2], z = p0[3]})
-    local vec1 = ffi.new("pxl8_vec3", {x = p1[1], y = p1[2], z = p1[3]})
-    C.pxl8_3d_draw_line_3d(gfx, vec0, vec1, color)
-end
-
-function pxl8.mat4_identity()
-    return C.pxl8_mat4_identity()
-end
-
-function pxl8.mat4_multiply(a, b)
-    return C.pxl8_mat4_multiply(a, b)
-end
-
-function pxl8.mat4_translate(x, y, z)
-    return C.pxl8_mat4_translate(x, y, z)
-end
-
-function pxl8.mat4_rotate_x(angle)
-    return C.pxl8_mat4_rotate_x(angle)
-end
-
-function pxl8.mat4_rotate_y(angle)
-    return C.pxl8_mat4_rotate_y(angle)
-end
-
-function pxl8.mat4_rotate_z(angle)
-    return C.pxl8_mat4_rotate_z(angle)
-end
-
-function pxl8.mat4_scale(x, y, z)
-    return C.pxl8_mat4_scale(x, y, z)
-end
-
-function pxl8.mat4_ortho(left, right, bottom, top, near, far)
-    return C.pxl8_mat4_ortho(left, right, bottom, top, near, far)
-end
-
-function pxl8.mat4_perspective(fov, aspect, near, far)
-    return C.pxl8_mat4_perspective(fov, aspect, near, far)
-end
-
-function pxl8.mat4_lookat(eye, center, up)
-    local eye_vec = ffi.new("pxl8_vec3", {x = eye[1], y = eye[2], z = eye[3]})
-    local center_vec = ffi.new("pxl8_vec3", {x = center[1], y = center[2], z = center[3]})
-    local up_vec = ffi.new("pxl8_vec3", {x = up[1], y = up[2], z = up[3]})
-    return C.pxl8_mat4_lookat(eye_vec, center_vec, up_vec)
-end
-
-function pxl8.bounds(x, y, w, h)
-    return ffi.new("pxl8_bounds", {x = x, y = y, w = w, h = h})
-end
-
-function pxl8.ui_button(label)
-    return C.pxl8_ui_button(ui, label)
-end
-
-function pxl8.ui_checkbox(label, state)
-    local state_ptr = ffi.new("bool[1]", state)
-    local changed = C.pxl8_ui_checkbox(ui, label, state_ptr)
-    return changed, state_ptr[0]
-end
-
-function pxl8.ui_has_mouse_focus()
-    return C.pxl8_ui_has_mouse_focus(ui)
-end
-
-function pxl8.ui_indent(amount)
-    C.pxl8_ui_indent(ui, amount)
-end
-
-function pxl8.ui_label(text)
-    C.pxl8_ui_label(ui, text)
-end
-
-function pxl8.ui_layout_row(item_count, widths, height)
-    local widths_array = widths
-    if type(widths) == "table" then
-        widths_array = ffi.new("int[?]", #widths, widths)
-    elseif type(widths) == "number" then
-        widths_array = ffi.new("int[1]", widths)
-    end
-    C.pxl8_ui_layout_row(ui, item_count, widths_array, height)
-end
-
-function pxl8.ui_window_begin(title, x, y, w, h, options)
-    local rect = ffi.new("pxl8_bounds", {x = x, y = y, w = w, h = h})
-    return C.pxl8_ui_window_begin(ui, title, rect, options or 0)
-end
-
-function pxl8.ui_window_end()
-    C.pxl8_ui_window_end(ui)
-end
-
-function pxl8.ui_window_set_open(title, open)
-    C.pxl8_ui_window_set_open(ui, title, open)
-end
-
-function pxl8.world_new()
-    return C.pxl8_world_create()
-end
-
-function pxl8.world_destroy(world)
-    C.pxl8_world_destroy(world)
-end
-
-function pxl8.world_load(world, filepath)
-    return C.pxl8_world_load(world, filepath)
-end
-
-function pxl8.world_render(world, camera_pos)
-    local vec = ffi.new("pxl8_vec3", {x = camera_pos[1], y = camera_pos[2], z = camera_pos[3]})
-    C.pxl8_world_render(world, gfx, vec)
-end
-
-function pxl8.world_unload(world)
-    C.pxl8_world_unload(world)
-end
-
-function pxl8.world_is_loaded(world)
-    return C.pxl8_world_is_loaded(world)
-end
-
-function pxl8.world_generate(world, params)
-    local c_params = ffi.new("pxl8_procgen_params")
-    c_params.type = params.type or C.PXL8_PROCGEN_CAVE
-    c_params.width = params.width or 32
-    c_params.height = params.height or 32
-    c_params.depth = params.depth or 0
-    c_params.seed = params.seed or 0
-    c_params.density = params.density or 0.45
-    c_params.iterations = params.iterations or 4
-    c_params.type_params = nil
-    return C.pxl8_world_generate(world, gfx, c_params)
-end
-
-pxl8.PROCGEN_CAVE = C.PXL8_PROCGEN_CAVE
-pxl8.PROCGEN_DUNGEON = C.PXL8_PROCGEN_DUNGEON
-pxl8.PROCGEN_TERRAIN = C.PXL8_PROCGEN_TERRAIN
-
-function pxl8.procgen_tex(params)
-    local width = params.width or 64
-    local height = params.height or 64
-    local buffer = ffi.new("u8[?]", width * height)
-    local tex_params = ffi.new("pxl8_procgen_tex_params")
-
-    local name = params.name or ""
-    ffi.copy(tex_params.name, name, math.min(#name, 15))
-
-    tex_params.seed = params.seed or 0
-    tex_params.width = width
-    tex_params.height = height
-    tex_params.scale = params.scale or 1.0
-    tex_params.roughness = params.roughness or 0.0
-    tex_params.base_color = params.base_color or 0
-    tex_params.variation = params.variation or 0
-
-    C.pxl8_procgen_tex(buffer, tex_params)
-
-    local tex_id = C.pxl8_gfx_create_texture(gfx, buffer, width, height)
-    if tex_id < 0 then
-        return nil
-    end
-    return tex_id
-end
-
-function pxl8.world_apply_textures(world, texture_defs)
-    local count = #texture_defs
-    local textures = ffi.new("pxl8_world_texture[?]", count)
-
-    for i, def in ipairs(texture_defs) do
-        local idx = i - 1
-        ffi.copy(textures[idx].name, def.name or "", math.min(#(def.name or ""), 15))
-        textures[idx].texture_id = def.texture_id or 0
-
-        if def.rule then
-            textures[idx].rule = ffi.cast("bool (*)(const pxl8_vec3*, const pxl8_bsp_face*, const pxl8_bsp*)",
-                function(normal, face, bsp)
-                    return def.rule(normal[0], face, bsp)
-                end)
-        else
-            textures[idx].rule = nil
-        end
-    end
-
-    local result = C.pxl8_world_apply_textures(world, textures, count)
-
-    return result
-end
 
 return pxl8

src/lua/pxl8/anim.lua

@@ -0,0 +1,110 @@
+local ffi = require("ffi")
+local C = ffi.C
+local core = require("pxl8.core")
+
+local anim = {}
+
+function anim.create(frame_ids, frame_durations)
+    local frame_count = #frame_ids
+    local c_frame_ids = ffi.new("u32[?]", frame_count)
+    local c_frame_durations = nil
+
+    for i = 1, frame_count do
+        c_frame_ids[i-1] = frame_ids[i]
+    end
+
+    if frame_durations then
+        c_frame_durations = ffi.new("u16[?]", frame_count)
+        for i = 1, frame_count do
+            c_frame_durations[i-1] = frame_durations[i]
+        end
+    end
+
+    return C.pxl8_anim_create(c_frame_ids, c_frame_durations, frame_count)
+end
+
+function anim.create_from_ase(filepath)
+    return C.pxl8_anim_create_from_ase(core.gfx, filepath)
+end
+
+function anim.destroy(a)
+    C.pxl8_anim_destroy(a)
+end
+
+function anim.add_state(a, name, state_anim)
+    return C.pxl8_anim_add_state(a, name, state_anim)
+end
+
+function anim.get_current_frame(a)
+    return C.pxl8_anim_get_current_frame(a)
+end
+
+function anim.get_current_frame_id(a)
+    return C.pxl8_anim_get_current_frame_id(a)
+end
+
+function anim.get_state(a)
+    local state_name = C.pxl8_anim_get_state(a)
+    if state_name ~= nil then
+        return ffi.string(state_name)
+    end
+    return nil
+end
+
+function anim.has_state_machine(a)
+    return C.pxl8_anim_has_state_machine(a)
+end
+
+function anim.is_complete(a)
+    return C.pxl8_anim_is_complete(a)
+end
+
+function anim.is_playing(a)
+    return C.pxl8_anim_is_playing(a)
+end
+
+function anim.pause(a)
+    C.pxl8_anim_pause(a)
+end
+
+function anim.play(a)
+    C.pxl8_anim_play(a)
+end
+
+function anim.render_sprite(a, x, y, w, h)
+    C.pxl8_anim_render_sprite(a, core.gfx, x, y, w, h)
+end
+
+function anim.reset(a)
+    C.pxl8_anim_reset(a)
+end
+
+function anim.set_frame(a, frame)
+    C.pxl8_anim_set_frame(a, frame)
+end
+
+function anim.set_loop(a, loop)
+    C.pxl8_anim_set_loop(a, loop)
+end
+
+function anim.set_reverse(a, reverse)
+    C.pxl8_anim_set_reverse(a, reverse)
+end
+
+function anim.set_speed(a, speed)
+    C.pxl8_anim_set_speed(a, speed)
+end
+
+function anim.set_state(a, name)
+    return C.pxl8_anim_set_state(a, name)
+end
+
+function anim.stop(a)
+    C.pxl8_anim_stop(a)
+end
+
+function anim.update(a, dt)
+    C.pxl8_anim_update(a, dt)
+end
+
+return anim

src/lua/pxl8/core.lua

@@ -0,0 +1,45 @@
+local ffi = require("ffi")
+local C = ffi.C
+
+local core = {}
+
+function core.init(game_ptr, gfx_ptr, input_ptr, ui_ptr)
+    core.game = game_ptr
+    core.gfx = gfx_ptr
+    core.input = input_ptr
+    core.ui = ui_ptr
+end
+
+function core.get_fps()
+    return C.pxl8_game_get_fps(core.game)
+end
+
+function core.get_width()
+    return C.pxl8_gfx_get_width(core.gfx)
+end
+
+function core.get_height()
+    return C.pxl8_gfx_get_height(core.gfx)
+end
+
+function core.info(msg)
+    C.pxl8_lua_info(msg)
+end
+
+function core.warn(msg)
+    C.pxl8_lua_warn(msg)
+end
+
+function core.error(msg)
+    C.pxl8_lua_error(msg)
+end
+
+function core.debug(msg)
+    C.pxl8_lua_debug(msg)
+end
+
+function core.trace(msg)
+    C.pxl8_lua_trace(msg)
+end
+
+return core

src/lua/pxl8/gfx3d.lua

@@ -0,0 +1,56 @@
+local ffi = require("ffi")
+local C = ffi.C
+local core = require("pxl8.core")
+
+local gfx3d = {}
+
+function gfx3d.clear_zbuffer()
+    C.pxl8_3d_clear_zbuffer(core.gfx)
+end
+
+function gfx3d.set_model(mat)
+    C.pxl8_3d_set_model(core.gfx, mat)
+end
+
+function gfx3d.set_view(mat)
+    C.pxl8_3d_set_view(core.gfx, mat)
+end
+
+function gfx3d.set_projection(mat)
+    C.pxl8_3d_set_projection(core.gfx, mat)
+end
+
+function gfx3d.set_wireframe(wireframe)
+    C.pxl8_3d_set_wireframe(core.gfx, wireframe)
+end
+
+function gfx3d.set_affine_textures(affine)
+    C.pxl8_3d_set_affine_textures(core.gfx, affine)
+end
+
+function gfx3d.set_backface_culling(culling)
+    C.pxl8_3d_set_backface_culling(core.gfx, culling)
+end
+
+function gfx3d.draw_triangle(v0, v1, v2, color)
+    local vec0 = ffi.new("pxl8_vec3", {x = v0[1], y = v0[2], z = v0[3]})
+    local vec1 = ffi.new("pxl8_vec3", {x = v1[1], y = v1[2], z = v1[3]})
+    local vec2 = ffi.new("pxl8_vec3", {x = v2[1], y = v2[2], z = v2[3]})
+    C.pxl8_3d_draw_triangle_raw(core.gfx, vec0, vec1, vec2, color)
+end
+
+function gfx3d.draw_triangle_textured(v0, v1, v2, uv0, uv1, uv2, texture_id)
+    local vec0 = ffi.new("pxl8_vec3", {x = v0[1], y = v0[2], z = v0[3]})
+    local vec1 = ffi.new("pxl8_vec3", {x = v1[1], y = v1[2], z = v1[3]})
+    local vec2 = ffi.new("pxl8_vec3", {x = v2[1], y = v2[2], z = v2[3]})
+    C.pxl8_3d_draw_triangle_textured(core.gfx, vec0, vec1, vec2,
+        uv0[1], uv0[2], uv1[1], uv1[2], uv2[1], uv2[2], texture_id)
+end
+
+function gfx3d.draw_line(p0, p1, color)
+    local vec0 = ffi.new("pxl8_vec3", {x = p0[1], y = p0[2], z = p0[3]})
+    local vec1 = ffi.new("pxl8_vec3", {x = p1[1], y = p1[2], z = p1[3]})
+    C.pxl8_3d_draw_line_3d(core.gfx, vec0, vec1, color)
+end
+
+return gfx3d

src/lua/pxl8/graphics.lua

@@ -0,0 +1,85 @@
+local ffi = require("ffi")
+local C = ffi.C
+local core = require("pxl8.core")
+
+local graphics = {}
+
+function graphics.clr(color)
+    C.pxl8_clr(core.gfx, color or 0)
+end
+
+function graphics.pixel(x, y, color)
+    if color then
+        C.pxl8_pixel(core.gfx, x, y, color)
+    else
+        return C.pxl8_get_pixel(core.gfx, x, y)
+    end
+end
+
+function graphics.line(x0, y0, x1, y1, color)
+    C.pxl8_line(core.gfx, x0, y0, x1, y1, color)
+end
+
+function graphics.rect(x, y, w, h, color)
+    C.pxl8_rect(core.gfx, x, y, w, h, color)
+end
+
+function graphics.rect_fill(x, y, w, h, color)
+    C.pxl8_rect_fill(core.gfx, x, y, w, h, color)
+end
+
+function graphics.circle(x, y, r, color)
+    C.pxl8_circle(core.gfx, x, y, r, color)
+end
+
+function graphics.circle_fill(x, y, r, color)
+    C.pxl8_circle_fill(core.gfx, x, y, r, color)
+end
+
+function graphics.text(str, x, y, color)
+    C.pxl8_text(core.gfx, str, x or 0, y or 0, color or 15)
+end
+
+function graphics.sprite(id, x, y, w, h, flip_x, flip_y)
+    C.pxl8_sprite(core.gfx, id or 0, x or 0, y or 0, w or 16, h or 16, flip_x or false, flip_y or false)
+end
+
+function graphics.load_palette(filepath)
+    return C.pxl8_gfx_load_palette(core.gfx, filepath)
+end
+
+function graphics.load_sprite(filepath)
+    local sprite_id = ffi.new("unsigned int[1]")
+    local result = C.pxl8_gfx_load_sprite(core.gfx, filepath, sprite_id)
+    if result == 0 then
+        return sprite_id[0]
+    else
+        return nil, result
+    end
+end
+
+function graphics.create_texture(pixels, width, height)
+    local pixel_data = ffi.new("u8[?]", width * height)
+    for i = 0, width * height - 1 do
+        pixel_data[i] = pixels[i + 1] or 0
+    end
+    local result = C.pxl8_gfx_create_texture(core.gfx, pixel_data, width, height)
+    if result < 0 then
+        return nil
+    end
+    return result
+end
+
+function graphics.upload_atlas()
+    C.pxl8_gfx_upload_atlas(core.gfx)
+end
+
+function graphics.color_ramp(start, count, from_color, to_color)
+    C.pxl8_gfx_color_ramp(core.gfx, start, count, from_color, to_color)
+end
+
+function graphics.fade_palette(start, count, amount, target_color)
+    C.pxl8_gfx_fade_palette(core.gfx, start, count, amount, target_color)
+end
+
+return graphics

src/lua/pxl8/input.lua

@@ -0,0 +1,35 @@
+local ffi = require("ffi")
+local C = ffi.C
+local core = require("pxl8.core")
+
+local input = {}
+
+function input.key_down(key)
+    return C.pxl8_key_down(core.input, key)
+end
+
+function input.key_pressed(key)
+    return C.pxl8_key_pressed(core.input, key)
+end
+
+function input.key_released(key)
+    return C.pxl8_key_released(core.input, key)
+end
+
+function input.mouse_wheel_x()
+    return C.pxl8_mouse_wheel_x(core.input)
+end
+
+function input.mouse_wheel_y()
+    return C.pxl8_mouse_wheel_y(core.input)
+end
+
+function input.mouse_x()
+    return C.pxl8_mouse_x(core.input)
+end
+
+function input.mouse_y()
+    return C.pxl8_mouse_y(core.input)
+end
+
+return input

src/lua/pxl8/math.lua

@@ -0,0 +1,53 @@
+local ffi = require("ffi")
+local C = ffi.C
+
+local math3d = {}
+
+function math3d.mat4_identity()
+    return C.pxl8_mat4_identity()
+end
+
+function math3d.mat4_multiply(a, b)
+    return C.pxl8_mat4_multiply(a, b)
+end
+
+function math3d.mat4_translate(x, y, z)
+    return C.pxl8_mat4_translate(x, y, z)
+end
+
+function math3d.mat4_rotate_x(angle)
+    return C.pxl8_mat4_rotate_x(angle)
+end
+
+function math3d.mat4_rotate_y(angle)
+    return C.pxl8_mat4_rotate_y(angle)
+end
+
+function math3d.mat4_rotate_z(angle)
+    return C.pxl8_mat4_rotate_z(angle)
+end
+
+function math3d.mat4_scale(x, y, z)
+    return C.pxl8_mat4_scale(x, y, z)
+end
+
+function math3d.mat4_ortho(left, right, bottom, top, near, far)
+    return C.pxl8_mat4_ortho(left, right, bottom, top, near, far)
+end
+
+function math3d.mat4_perspective(fov, aspect, near, far)
+    return C.pxl8_mat4_perspective(fov, aspect, near, far)
+end
+
+function math3d.mat4_lookat(eye, center, up)
+    local eye_vec = ffi.new("pxl8_vec3", {x = eye[1], y = eye[2], z = eye[3]})
+    local center_vec = ffi.new("pxl8_vec3", {x = center[1], y = center[2], z = center[3]})
+    local up_vec = ffi.new("pxl8_vec3", {x = up[1], y = up[2], z = up[3]})
+    return C.pxl8_mat4_lookat(eye_vec, center_vec, up_vec)
+end
+
+function math3d.bounds(x, y, w, h)
+    return ffi.new("pxl8_bounds", {x = x, y = y, w = w, h = h})
+end
+
+return math3d

src/lua/pxl8/particles.lua

@@ -0,0 +1,31 @@
+local ffi = require("ffi")
+local C = ffi.C
+local core = require("pxl8.core")
+
+local particles = {}
+
+function particles.new(max_count)
+    return C.pxl8_particles_create(max_count or 1000)
+end
+
+function particles.destroy(ps)
+    C.pxl8_particles_destroy(ps)
+end
+
+function particles.clear(ps)
+    C.pxl8_particles_clear(ps)
+end
+
+function particles.emit(ps, count)
+    C.pxl8_particles_emit(ps, count or 1)
+end
+
+function particles.update(ps, dt)
+    C.pxl8_particles_update(ps, dt)
+end
+
+function particles.render(ps)
+    C.pxl8_particles_render(ps, core.gfx)
+end
+
+return particles

src/lua/pxl8/tilemap.lua

@@ -0,0 +1,82 @@
+local ffi = require("ffi")
+local C = ffi.C
+local core = require("pxl8.core")
+
+local tilemap = {}
+
+tilemap.TILE_FLIP_X = 1
+tilemap.TILE_FLIP_Y = 2
+tilemap.TILE_SOLID = 4
+tilemap.TILE_TRIGGER = 8
+
+local tile_data = setmetatable({}, {__mode = "k"})
+
+function tilemap.tilesheet_new(tile_size)
+    return C.pxl8_tilesheet_create(tile_size or 16)
+end
+
+function tilemap.tilesheet_destroy(tilesheet)
+    C.pxl8_tilesheet_destroy(tilesheet)
+end
+
+function tilemap.tilesheet_load(tilesheet, filepath)
+    return C.pxl8_tilesheet_load(tilesheet, filepath, core.gfx)
+end
+
+function tilemap.new(width, height, tile_size)
+    return C.pxl8_tilemap_create(width, height, tile_size or 16)
+end
+
+function tilemap.destroy(tm)
+    C.pxl8_tilemap_destroy(tm)
+end
+
+function tilemap.set_tilesheet(tm, tilesheet)
+    return C.pxl8_tilemap_set_tilesheet(tm, tilesheet)
+end
+
+function tilemap.set_tile(tm, layer, x, y, tile_id, flags)
+    C.pxl8_tilemap_set_tile(tm, layer or 0, x, y, tile_id or 0, flags or 0)
+end
+
+function tilemap.get_tile_id(tm, layer, x, y)
+    return C.pxl8_tilemap_get_tile_id(tm, layer or 0, x, y)
+end
+
+function tilemap.set_camera(tm, x, y)
+    C.pxl8_tilemap_set_camera(tm, x, y)
+end
+
+function tilemap.render(tm)
+    C.pxl8_tilemap_render(tm, core.gfx)
+end
+
+function tilemap.render_layer(tm, layer)
+    C.pxl8_tilemap_render_layer(tm, core.gfx, layer)
+end
+
+function tilemap.is_solid(tm, x, y)
+    return C.pxl8_tilemap_is_solid(tm, x, y)
+end
+
+function tilemap.check_collision(tm, x, y, w, h)
+    return C.pxl8_tilemap_check_collision(tm, x, y, w, h)
+end
+
+function tilemap.get_tile_data(tm, tile_id)
+    if not tm or tile_id == 0 then return nil end
+    if not tile_data[tm] then return nil end
+    return tile_data[tm][tile_id]
+end
+
+function tilemap.load_ase(tm, filepath, layer)
+    return C.pxl8_tilemap_load_ase(tm, filepath, layer or 0)
+end
+
+function tilemap.set_tile_data(tm, tile_id, data)
+    if not tm or tile_id == 0 then return end
+    if not tile_data[tm] then tile_data[tm] = {} end
+    tile_data[tm][tile_id] = data
+end
+
+return tilemap

src/lua/pxl8/transition.lua

@@ -0,0 +1,68 @@
+local ffi = require("ffi")
+local C = ffi.C
+local core = require("pxl8.core")
+
+local transition = {}
+
+local transition_types = {
+    fade = 0,
+    wipe_left = 1,
+    wipe_right = 2,
+    wipe_up = 3,
+    wipe_down = 4,
+    circle_open = 5,
+    circle_close = 6,
+    dissolve = 7,
+    pixelate = 8
+}
+
+function transition.create(type_name, duration)
+    local type_id = transition_types[type_name] or 0
+    return C.pxl8_transition_create(type_id, duration or 1.0)
+end
+
+function transition.destroy(t)
+    C.pxl8_transition_destroy(t)
+end
+
+function transition.get_progress(t)
+    return C.pxl8_transition_get_progress(t)
+end
+
+function transition.is_active(t)
+    return C.pxl8_transition_is_active(t)
+end
+
+function transition.is_complete(t)
+    return C.pxl8_transition_is_complete(t)
+end
+
+function transition.render(t)
+    C.pxl8_transition_render(t, core.gfx)
+end
+
+function transition.reset(t)
+    C.pxl8_transition_reset(t)
+end
+
+function transition.set_color(t, color)
+    C.pxl8_transition_set_color(t, color)
+end
+
+function transition.set_reverse(t, reverse)
+    C.pxl8_transition_set_reverse(t, reverse)
+end
+
+function transition.start(t)
+    C.pxl8_transition_start(t)
+end
+
+function transition.stop(t)
+    C.pxl8_transition_stop(t)
+end
+
+function transition.update(t, dt)
+    C.pxl8_transition_update(t, dt)
+end
+
+return transition

src/lua/pxl8/ui.lua

@@ -0,0 +1,52 @@
+local ffi = require("ffi")
+local C = ffi.C
+local core = require("pxl8.core")
+
+local ui = {}
+
+function ui.button(label)
+    return C.pxl8_ui_button(core.ui, label)
+end
+
+function ui.checkbox(label, state)
+    local state_ptr = ffi.new("bool[1]", state)
+    local changed = C.pxl8_ui_checkbox(core.ui, label, state_ptr)
+    return changed, state_ptr[0]
+end
+
+function ui.has_mouse_focus()
+    return C.pxl8_ui_has_mouse_focus(core.ui)
+end
+
+function ui.indent(amount)
+    C.pxl8_ui_indent(core.ui, amount)
+end
+
+function ui.label(text)
+    C.pxl8_ui_label(core.ui, text)
+end
+
+function ui.layout_row(item_count, widths, height)
+    local widths_array = widths
+    if type(widths) == "table" then
+        widths_array = ffi.new("int[?]", #widths, widths)
+    elseif type(widths) == "number" then
+        widths_array = ffi.new("int[1]", widths)
+    end
+    C.pxl8_ui_layout_row(core.ui, item_count, widths_array, height)
+end
+
+function ui.window_begin(title, x, y, w, h, options)
+    local rect = ffi.new("pxl8_bounds", {x = x, y = y, w = w, h = h})
+    return C.pxl8_ui_window_begin(core.ui, title, rect, options or 0)
+end
+
+function ui.window_end()
+    C.pxl8_ui_window_end(core.ui)
+end
+
+function ui.window_set_open(title, open)
+    C.pxl8_ui_window_set_open(core.ui, title, open)
+end
+
+return ui

src/lua/pxl8/vfx.lua

@@ -0,0 +1,65 @@
+local ffi = require("ffi")
+local C = ffi.C
+local core = require("pxl8.core")
+
+local vfx = {}
+
+function vfx.raster_bars(bars, time)
+    local c_bars = ffi.new("pxl8_raster_bar[?]", #bars)
+    for i, bar in ipairs(bars) do
+        c_bars[i-1].base_y = bar.base_y or 0
+        c_bars[i-1].amplitude = bar.amplitude or 10
+        c_bars[i-1].height = bar.height or 5
+        c_bars[i-1].speed = bar.speed or 1.0
+        c_bars[i-1].phase = bar.phase or 0
+        c_bars[i-1].color = bar.color or 15
+        c_bars[i-1].fade_color = bar.fade_color or bar.color or 15
+    end
+    C.pxl8_vfx_raster_bars(core.gfx, c_bars, #bars, time)
+end
+
+function vfx.plasma(time, scale1, scale2, palette_offset)
+    C.pxl8_vfx_plasma(core.gfx, time, scale1 or 0.05, scale2 or 0.03, palette_offset or 0)
+end
+
+function vfx.rotozoom(angle, zoom, cx, cy)
+    local width = C.pxl8_gfx_get_width(core.gfx)
+    local height = C.pxl8_gfx_get_height(core.gfx)
+    C.pxl8_vfx_rotozoom(core.gfx, angle, zoom, cx or width/2, cy or height/2)
+end
+
+function vfx.tunnel(time, speed, twist)
+    C.pxl8_vfx_tunnel(core.gfx, time, speed or 2.0, twist or 0.5)
+end
+
+function vfx.explosion(ps, x, y, color, force)
+    C.pxl8_vfx_explosion(ps, x, y, color or 15, force or 200.0)
+end
+
+function vfx.fire(ps, x, y, width, palette_start)
+    C.pxl8_vfx_fire(ps, x, y, width or 50, palette_start or 64)
+end
+
+function vfx.rain(ps, width, wind)
+    local w = width or C.pxl8_gfx_get_width(core.gfx)
+    C.pxl8_vfx_rain(ps, w, wind or 0.0)
+end
+
+function vfx.smoke(ps, x, y, color)
+    C.pxl8_vfx_smoke(ps, x, y, color or 8)
+end
+
+function vfx.snow(ps, width, wind)
+    local w = width or C.pxl8_gfx_get_width(core.gfx)
+    C.pxl8_vfx_snow(ps, w, wind or 10.0)
+end
+
+function vfx.sparks(ps, x, y, color)
+    C.pxl8_vfx_sparks(ps, x, y, color or 15)
+end
+
+function vfx.starfield(ps, speed, spread)
+    C.pxl8_vfx_starfield(ps, speed or 5.0, spread or 500.0)
+end
+
+return vfx

src/lua/pxl8/world.lua

@@ -0,0 +1,99 @@
+local ffi = require("ffi")
+local C = ffi.C
+local core = require("pxl8.core")
+
+local world = {}
+
+world.PROCGEN_CAVE = C.PXL8_PROCGEN_CAVE
+world.PROCGEN_DUNGEON = C.PXL8_PROCGEN_DUNGEON
+world.PROCGEN_TERRAIN = C.PXL8_PROCGEN_TERRAIN
+
+function world.new()
+    return C.pxl8_world_create()
+end
+
+function world.destroy(w)
+    C.pxl8_world_destroy(w)
+end
+
+function world.load(w, filepath)
+    return C.pxl8_world_load(w, filepath)
+end
+
+function world.render(w, camera_pos)
+    local vec = ffi.new("pxl8_vec3", {x = camera_pos[1], y = camera_pos[2], z = camera_pos[3]})
+    C.pxl8_world_render(w, core.gfx, vec)
+end
+
+function world.unload(w)
+    C.pxl8_world_unload(w)
+end
+
+function world.is_loaded(w)
+    return C.pxl8_world_is_loaded(w)
+end
+
+function world.generate(w, params)
+    local c_params = ffi.new("pxl8_procgen_params")
+    c_params.type = params.type or C.PXL8_PROCGEN_CAVE
+    c_params.width = params.width or 32
+    c_params.height = params.height or 32
+    c_params.depth = params.depth or 0
+    c_params.seed = params.seed or 0
+    c_params.density = params.density or 0.45
+    c_params.iterations = params.iterations or 4
+    c_params.type_params = nil
+    return C.pxl8_world_generate(w, core.gfx, c_params)
+end
+
+function world.procgen_tex(params)
+    local width = params.width or 64
+    local height = params.height or 64
+    local buffer = ffi.new("u8[?]", width * height)
+    local tex_params = ffi.new("pxl8_procgen_tex_params")
+
+    local name = params.name or ""
+    ffi.copy(tex_params.name, name, math.min(#name, 15))
+
+    tex_params.seed = params.seed or 0
+    tex_params.width = width
+    tex_params.height = height
+    tex_params.scale = params.scale or 1.0
+    tex_params.roughness = params.roughness or 0.0
+    tex_params.base_color = params.base_color or 0
+    tex_params.variation = params.variation or 0
+
+    C.pxl8_procgen_tex(buffer, tex_params)
+
+    local tex_id = C.pxl8_gfx_create_texture(core.gfx, buffer, width, height)
+    if tex_id < 0 then
+        return nil
+    end
+    return tex_id
+end
+
+function world.apply_textures(w, texture_defs)
+    local count = #texture_defs
+    local textures = ffi.new("pxl8_world_texture[?]", count)
+
+    for i, def in ipairs(texture_defs) do
+        local idx = i - 1
+        ffi.copy(textures[idx].name, def.name or "", math.min(#(def.name or ""), 15))
+        textures[idx].texture_id = def.texture_id or 0
+
+        if def.rule then
+            textures[idx].rule = ffi.cast("bool (*)(const pxl8_vec3*, const pxl8_bsp_face*, const pxl8_bsp*)",
+                function(normal, face, bsp)
+                    return def.rule(normal[0], face, bsp)
+                end)
+        else
+            textures[idx].rule = nil
+        end
+    end
+
+    local result = C.pxl8_world_apply_textures(w, textures, count)
+
+    return result
+end
+
+return world

src/pxl8_anim.c

@@ -0,0 +1,457 @@
+#include "pxl8_anim.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "pxl8_ase.h"
+#include "pxl8_atlas.h"
+#include "pxl8_macros.h"
+
+#define PXL8_ANIM_MAX_STATES 32
+
+typedef struct pxl8_anim_state {
+    char* name;
+    pxl8_anim* anim;
+} pxl8_anim_state;
+
+typedef struct pxl8_anim_state_machine {
+    pxl8_anim_state states[PXL8_ANIM_MAX_STATES];
+    u16 state_count;
+    u16 current_state;
+} pxl8_anim_state_machine;
+
+pxl8_anim* pxl8_anim_create(const u32* frame_ids, const u16* frame_durations, u16 frame_count) {
+    if (!frame_ids || frame_count == 0) {
+        pxl8_error("Invalid animation parameters");
+        return NULL;
+    }
+
+    pxl8_anim* anim = (pxl8_anim*)calloc(1, sizeof(pxl8_anim));
+    if (!anim) {
+        pxl8_error("Failed to allocate animation");
+        return NULL;
+    }
+
+    anim->frame_ids = (u32*)malloc(frame_count * sizeof(u32));
+    if (!anim->frame_ids) {
+        pxl8_error("Failed to allocate frame IDs");
+        free(anim);
+        return NULL;
+    }
+
+    memcpy(anim->frame_ids, frame_ids, frame_count * sizeof(u32));
+
+    if (frame_durations) {
+        anim->frame_durations = (u16*)malloc(frame_count * sizeof(u16));
+        if (!anim->frame_durations) {
+            pxl8_error("Failed to allocate frame durations");
+            free(anim->frame_ids);
+            free(anim);
+            return NULL;
+        }
+        memcpy(anim->frame_durations, frame_durations, frame_count * sizeof(u16));
+    } else {
+        anim->frame_durations = (u16*)calloc(frame_count, sizeof(u16));
+        if (!anim->frame_durations) {
+            pxl8_error("Failed to allocate frame durations");
+            free(anim->frame_ids);
+            free(anim);
+            return NULL;
+        }
+        for (u16 i = 0; i < frame_count; i++) {
+            anim->frame_durations[i] = 100;
+        }
+    }
+
+    anim->frame_count = frame_count;
+    anim->current_frame = 0;
+    anim->time_accumulator = 0.0f;
+    anim->loop = true;
+    anim->playing = true;
+    anim->reverse = false;
+    anim->speed = 1.0f;
+    anim->state_machine = NULL;
+    anim->on_complete = NULL;
+    anim->on_frame_change = NULL;
+    anim->userdata = NULL;
+
+    return anim;
+}
+
+pxl8_anim* pxl8_anim_create_from_ase(pxl8_gfx* gfx, const char* path) {
+    if (!gfx || !path) {
+        pxl8_error("Invalid parameters for ASE animation creation");
+        return NULL;
+    }
+
+    pxl8_ase_file ase_file;
+    pxl8_result result = pxl8_ase_load(path, &ase_file);
+    if (result != PXL8_OK) {
+        pxl8_error("Failed to load ASE file: %s", path);
+        return NULL;
+    }
+
+    if (ase_file.frame_count == 0) {
+        pxl8_error("ASE file has no frames: %s", path);
+        pxl8_ase_destroy(&ase_file);
+        return NULL;
+    }
+
+    u32* frame_ids = (u32*)malloc(ase_file.frame_count * sizeof(u32));
+    u16* frame_durations = (u16*)malloc(ase_file.frame_count * sizeof(u16));
+    if (!frame_ids || !frame_durations) {
+        pxl8_error("Failed to allocate frame arrays");
+        free(frame_ids);
+        free(frame_durations);
+        pxl8_ase_destroy(&ase_file);
+        return NULL;
+    }
+
+    for (u32 i = 0; i < ase_file.frame_count; i++) {
+        pxl8_ase_frame* frame = &ase_file.frames[i];
+        result = pxl8_gfx_create_texture(gfx, frame->pixels, frame->width, frame->height);
+        if (result != PXL8_OK) {
+            pxl8_error("Failed to create texture for frame %u", i);
+            free(frame_ids);
+            free(frame_durations);
+            pxl8_ase_destroy(&ase_file);
+            return NULL;
+        }
+        frame_ids[i] = i;
+        frame_durations[i] = frame->duration;
+    }
+
+    pxl8_anim* anim = pxl8_anim_create(frame_ids, frame_durations, ase_file.frame_count);
+
+    free(frame_ids);
+    free(frame_durations);
+    pxl8_ase_destroy(&ase_file);
+
+    return anim;
+}
+
+void pxl8_anim_destroy(pxl8_anim* anim) {
+    if (!anim) return;
+
+    if (anim->state_machine) {
+        for (u16 i = 0; i < anim->state_machine->state_count; i++) {
+            free(anim->state_machine->states[i].name);
+            pxl8_anim_destroy(anim->state_machine->states[i].anim);
+        }
+        free(anim->state_machine);
+    }
+
+    free(anim->frame_ids);
+    free(anim->frame_durations);
+    free(anim);
+}
+
+pxl8_result pxl8_anim_add_state(pxl8_anim* anim, const char* name, pxl8_anim* state_anim) {
+    if (!anim || !name || !state_anim) {
+        return PXL8_ERROR_NULL_POINTER;
+    }
+
+    if (!anim->state_machine) {
+        anim->state_machine = (pxl8_anim_state_machine*)calloc(1, sizeof(pxl8_anim_state_machine));
+        if (!anim->state_machine) {
+            return PXL8_ERROR_OUT_OF_MEMORY;
+        }
+    }
+
+    if (anim->state_machine->state_count >= PXL8_ANIM_MAX_STATES) {
+        pxl8_error("Cannot add more states, maximum %d reached", PXL8_ANIM_MAX_STATES);
+        return PXL8_ERROR_OUT_OF_MEMORY;
+    }
+
+    u16 idx = anim->state_machine->state_count;
+    anim->state_machine->states[idx].name = strdup(name);
+    if (!anim->state_machine->states[idx].name) {
+        return PXL8_ERROR_OUT_OF_MEMORY;
+    }
+
+    anim->state_machine->states[idx].anim = state_anim;
+    anim->state_machine->state_count++;
+
+    return PXL8_OK;
+}
+
+u16 pxl8_anim_get_current_frame(const pxl8_anim* anim) {
+    if (!anim) return 0;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            return state_anim->current_frame;
+        }
+    }
+
+    return anim->current_frame;
+}
+
+u32 pxl8_anim_get_current_frame_id(const pxl8_anim* anim) {
+    if (!anim || !anim->frame_ids) return 0;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim && state_anim->frame_ids) {
+            return state_anim->frame_ids[state_anim->current_frame];
+        }
+    }
+
+    return anim->frame_ids[anim->current_frame];
+}
+
+const char* pxl8_anim_get_state(const pxl8_anim* anim) {
+    if (!anim || !anim->state_machine) return NULL;
+
+    if (anim->state_machine->current_state < anim->state_machine->state_count) {
+        return anim->state_machine->states[anim->state_machine->current_state].name;
+    }
+
+    return NULL;
+}
+
+bool pxl8_anim_has_state_machine(const pxl8_anim* anim) {
+    return anim && anim->state_machine && anim->state_machine->state_count > 0;
+}
+
+bool pxl8_anim_is_complete(const pxl8_anim* anim) {
+    if (!anim) return true;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            return pxl8_anim_is_complete(state_anim);
+        }
+    }
+
+    if (anim->loop) return false;
+
+    if (anim->reverse) {
+        return anim->current_frame == 0;
+    } else {
+        return anim->current_frame >= anim->frame_count - 1;
+    }
+}
+
+bool pxl8_anim_is_playing(const pxl8_anim* anim) {
+    if (!anim) return false;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            return state_anim->playing;
+        }
+    }
+
+    return anim->playing;
+}
+
+void pxl8_anim_pause(pxl8_anim* anim) {
+    if (!anim) return;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            state_anim->playing = false;
+            return;
+        }
+    }
+
+    anim->playing = false;
+}
+
+void pxl8_anim_play(pxl8_anim* anim) {
+    if (!anim) return;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            state_anim->playing = true;
+            return;
+        }
+    }
+
+    anim->playing = true;
+}
+
+void pxl8_anim_render_sprite(const pxl8_anim* anim, pxl8_gfx* gfx, i32 x, i32 y, i32 w, i32 h) {
+    if (!anim || !gfx) return;
+
+    u32 sprite_id = pxl8_anim_get_current_frame_id(anim);
+    pxl8_sprite(gfx, sprite_id, x, y, w, h);
+}
+
+void pxl8_anim_reset(pxl8_anim* anim) {
+    if (!anim) return;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            pxl8_anim_reset(state_anim);
+            return;
+        }
+    }
+
+    anim->current_frame = anim->reverse ? anim->frame_count - 1 : 0;
+    anim->time_accumulator = 0.0f;
+}
+
+void pxl8_anim_set_frame(pxl8_anim* anim, u16 frame) {
+    if (!anim) return;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            pxl8_anim_set_frame(state_anim, frame);
+            return;
+        }
+    }
+
+    if (frame < anim->frame_count) {
+        anim->current_frame = frame;
+        anim->time_accumulator = 0.0f;
+    }
+}
+
+void pxl8_anim_set_loop(pxl8_anim* anim, bool loop) {
+    if (!anim) return;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            state_anim->loop = loop;
+            return;
+        }
+    }
+
+    anim->loop = loop;
+}
+
+void pxl8_anim_set_reverse(pxl8_anim* anim, bool reverse) {
+    if (!anim) return;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            state_anim->reverse = reverse;
+            return;
+        }
+    }
+
+    anim->reverse = reverse;
+}
+
+void pxl8_anim_set_speed(pxl8_anim* anim, f32 speed) {
+    if (!anim) return;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            state_anim->speed = speed;
+            return;
+        }
+    }
+
+    anim->speed = speed;
+}
+
+pxl8_result pxl8_anim_set_state(pxl8_anim* anim, const char* name) {
+    if (!anim || !name) {
+        return PXL8_ERROR_NULL_POINTER;
+    }
+
+    if (!anim->state_machine) {
+        return PXL8_ERROR_INVALID_ARGUMENT;
+    }
+
+    for (u16 i = 0; i < anim->state_machine->state_count; i++) {
+        if (strcmp(anim->state_machine->states[i].name, name) == 0) {
+            if (anim->state_machine->current_state != i) {
+                anim->state_machine->current_state = i;
+                pxl8_anim_reset(anim->state_machine->states[i].anim);
+            }
+            return PXL8_OK;
+        }
+    }
+
+    pxl8_error("Animation state not found: %s", name);
+    return PXL8_ERROR_INVALID_ARGUMENT;
+}
+
+void pxl8_anim_stop(pxl8_anim* anim) {
+    if (!anim) return;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            pxl8_anim_stop(state_anim);
+            return;
+        }
+    }
+
+    anim->playing = false;
+    pxl8_anim_reset(anim);
+}
+
+void pxl8_anim_update(pxl8_anim* anim, f32 dt) {
+    if (!anim || !anim->playing) return;
+
+    if (anim->state_machine && anim->state_machine->current_state < anim->state_machine->state_count) {
+        pxl8_anim* state_anim = anim->state_machine->states[anim->state_machine->current_state].anim;
+        if (state_anim) {
+            pxl8_anim_update(state_anim, dt);
+            return;
+        }
+    }
+
+    if (anim->frame_count == 0 || !anim->frame_durations) return;
+
+    anim->time_accumulator += dt * anim->speed * 1000.0f;
+
+    u16 current_duration = anim->frame_durations[anim->current_frame];
+    if (current_duration == 0) return;
+
+    while (anim->time_accumulator >= current_duration) {
+        anim->time_accumulator -= current_duration;
+
+        u16 old_frame = anim->current_frame;
+
+        if (anim->reverse) {
+            if (anim->current_frame > 0) {
+                anim->current_frame--;
+            } else {
+                if (anim->loop) {
+                    anim->current_frame = anim->frame_count - 1;
+                } else {
+                    anim->playing = false;
+                    if (anim->on_complete) {
+                        anim->on_complete(anim->userdata);
+                    }
+                    break;
+                }
+            }
+        } else {
+            if (anim->current_frame < anim->frame_count - 1) {
+                anim->current_frame++;
+            } else {
+                if (anim->loop) {
+                    anim->current_frame = 0;
+                } else {
+                    anim->playing = false;
+                    if (anim->on_complete) {
+                        anim->on_complete(anim->userdata);
+                    }
+                    break;
+                }
+            }
+        }
+
+        if (old_frame != anim->current_frame && anim->on_frame_change) {
+            anim->on_frame_change(anim->current_frame, anim->userdata);
+        }
+
+        current_duration = anim->frame_durations[anim->current_frame];
+        if (current_duration == 0) break;
+    }
+}

src/pxl8_anim.h

@@ -0,0 +1,56 @@
+#pragma once
+
+#include "pxl8_gfx.h"
+#include "pxl8_types.h"
+
+typedef struct pxl8_anim_state_machine pxl8_anim_state_machine;
+
+typedef struct pxl8_anim {
+    u32* frame_ids;
+    u16* frame_durations;
+    u16 frame_count;
+    u16 current_frame;
+    f32 time_accumulator;
+
+    bool loop;
+    bool playing;
+    bool reverse;
+    f32 speed;
+
+    pxl8_anim_state_machine* state_machine;
+
+    void (*on_complete)(void* userdata);
+    void (*on_frame_change)(u16 frame, void* userdata);
+    void* userdata;
+} pxl8_anim;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+pxl8_anim* pxl8_anim_create(const u32* frame_ids, const u16* frame_durations, u16 frame_count);
+pxl8_anim* pxl8_anim_create_from_ase(pxl8_gfx* gfx, const char* path);
+void pxl8_anim_destroy(pxl8_anim* anim);
+
+pxl8_result pxl8_anim_add_state(pxl8_anim* anim, const char* name, pxl8_anim* state_anim);
+u16 pxl8_anim_get_current_frame(const pxl8_anim* anim);
+u32 pxl8_anim_get_current_frame_id(const pxl8_anim* anim);
+const char* pxl8_anim_get_state(const pxl8_anim* anim);
+bool pxl8_anim_has_state_machine(const pxl8_anim* anim);
+bool pxl8_anim_is_complete(const pxl8_anim* anim);
+bool pxl8_anim_is_playing(const pxl8_anim* anim);
+void pxl8_anim_pause(pxl8_anim* anim);
+void pxl8_anim_play(pxl8_anim* anim);
+void pxl8_anim_render_sprite(const pxl8_anim* anim, pxl8_gfx* gfx, i32 x, i32 y, i32 w, i32 h);
+void pxl8_anim_reset(pxl8_anim* anim);
+void pxl8_anim_set_frame(pxl8_anim* anim, u16 frame);
+void pxl8_anim_set_loop(pxl8_anim* anim, bool loop);
+void pxl8_anim_set_reverse(pxl8_anim* anim, bool reverse);
+void pxl8_anim_set_speed(pxl8_anim* anim, f32 speed);
+pxl8_result pxl8_anim_set_state(pxl8_anim* anim, const char* name);
+void pxl8_anim_stop(pxl8_anim* anim);
+void pxl8_anim_update(pxl8_anim* anim, f32 dt);
+
+#ifdef __cplusplus
+}
+#endif

src/pxl8_gfx.c

@@ -141,7 +141,7 @@ pxl8_gfx* pxl8_gfx_create(
     i32 window_width,
     i32 window_height
 ) {
-    pxl8_gfx* gfx = (pxl8_gfx*)calloc(1, sizeof(*gfx));
+    pxl8_gfx* gfx = (pxl8_gfx*)calloc(1, sizeof(pxl8_gfx));
     if (!gfx) {
         pxl8_error("Failed to allocate graphics context");
         return NULL;

src/pxl8_procgen.c

@@ -28,26 +28,12 @@ static f32 prng_float(void) {
     return (f32)prng_next() / (f32)0xFFFFFFFF;
 }
 
-static cave_grid* cave_grid_create(i32 width, i32 height) {
+static bool cave_grid_init(cave_grid* grid, i32 width, i32 height) {
-    cave_grid* grid = malloc(sizeof(cave_grid));
-    if (!grid) return NULL;
-
     grid->width = width;
     grid->height = height;
     grid->cells = calloc(width * height, sizeof(u8));
 
-    if (!grid->cells) {
+    return grid->cells != NULL;
-        free(grid);
-        return NULL;
-    }
-
-    return grid;
-}
-
-static void cave_grid_destroy(cave_grid* grid) {
-    if (!grid) return;
-    free(grid->cells);
-    free(grid);
 }
 
 static u8 cave_grid_get(const cave_grid* grid, i32 x, i32 y) {
@@ -102,19 +88,19 @@ static void cave_grid_initialize(cave_grid* grid, f32 density) {
 }
 
 static void cave_grid_smooth(cave_grid* grid) {
-    cave_grid* temp = cave_grid_create(grid->width, grid->height);
+    cave_grid temp;
-    if (!temp) return;
+    if (!cave_grid_init(&temp, grid->width, grid->height)) return;
 
     for (i32 y = 0; y < grid->height; y++) {
         for (i32 x = 0; x < grid->width; x++) {
             i32 neighbors = cave_grid_count_neighbors(grid, x, y);
             u8 value = (neighbors > 4) ? 1 : 0;
-            cave_grid_set(temp, x, y, value);
+            cave_grid_set(&temp, x, y, value);
         }
     }
 
-    memcpy(grid->cells, temp->cells, grid->width * grid->height);
+    memcpy(grid->cells, temp.cells, grid->width * grid->height);
-    cave_grid_destroy(temp);
+    free(temp.cells);
 }
 
 static pxl8_result cave_to_bsp(pxl8_bsp* bsp, const cave_grid* grid) {
@@ -366,19 +352,19 @@ static pxl8_result cave_to_bsp(pxl8_bsp* bsp, const cave_grid* grid) {
 static pxl8_result procgen_cave(pxl8_bsp* bsp, const pxl8_procgen_params* params) {
     prng_seed(params->seed);
 
-    cave_grid* grid = cave_grid_create(params->width, params->height);
+    cave_grid grid;
-    if (!grid) {
+    if (!cave_grid_init(&grid, params->width, params->height)) {
         return PXL8_ERROR_OUT_OF_MEMORY;
     }
 
-    cave_grid_initialize(grid, params->density);
+    cave_grid_initialize(&grid, params->density);
 
     for (i32 i = 0; i < params->iterations; i++) {
-        cave_grid_smooth(grid);
+        cave_grid_smooth(&grid);
     }
 
-    pxl8_result result = cave_to_bsp(bsp, grid);
+    pxl8_result result = cave_to_bsp(bsp, &grid);
-    cave_grid_destroy(grid);
+    free(grid.cells);
 
     return result;
 }

src/pxl8_script.c

@@ -188,6 +188,44 @@ static const char* pxl8_ffi_cdefs =
 "void pxl8_vfx_tunnel(pxl8_gfx* ctx, f32 time, f32 speed, f32 twist);\n"
 "void pxl8_vfx_water_ripple(pxl8_gfx* ctx, f32* height_map, i32 drop_x, i32 drop_y, f32 damping);\n"
 "\n"
+"typedef struct pxl8_transition pxl8_transition;\n"
+"typedef struct pxl8_anim pxl8_anim;\n"
+"\n"
+"pxl8_transition* pxl8_transition_create(i32 type, f32 duration);\n"
+"void pxl8_transition_destroy(pxl8_transition* transition);\n"
+"f32 pxl8_transition_get_progress(const pxl8_transition* transition);\n"
+"bool pxl8_transition_is_active(const pxl8_transition* transition);\n"
+"bool pxl8_transition_is_complete(const pxl8_transition* transition);\n"
+"void pxl8_transition_render(const pxl8_transition* transition, pxl8_gfx* gfx);\n"
+"void pxl8_transition_reset(pxl8_transition* transition);\n"
+"void pxl8_transition_set_color(pxl8_transition* transition, u32 color);\n"
+"void pxl8_transition_set_reverse(pxl8_transition* transition, bool reverse);\n"
+"void pxl8_transition_start(pxl8_transition* transition);\n"
+"void pxl8_transition_stop(pxl8_transition* transition);\n"
+"void pxl8_transition_update(pxl8_transition* transition, f32 dt);\n"
+"\n"
+"pxl8_anim* pxl8_anim_create(const u32* frame_ids, const u16* frame_durations, u16 frame_count);\n"
+"pxl8_anim* pxl8_anim_create_from_ase(pxl8_gfx* gfx, const char* path);\n"
+"void pxl8_anim_destroy(pxl8_anim* anim);\n"
+"i32 pxl8_anim_add_state(pxl8_anim* anim, const char* name, pxl8_anim* state_anim);\n"
+"u16 pxl8_anim_get_current_frame(const pxl8_anim* anim);\n"
+"u32 pxl8_anim_get_current_frame_id(const pxl8_anim* anim);\n"
+"const char* pxl8_anim_get_state(const pxl8_anim* anim);\n"
+"bool pxl8_anim_has_state_machine(const pxl8_anim* anim);\n"
+"bool pxl8_anim_is_complete(const pxl8_anim* anim);\n"
+"bool pxl8_anim_is_playing(const pxl8_anim* anim);\n"
+"void pxl8_anim_pause(pxl8_anim* anim);\n"
+"void pxl8_anim_play(pxl8_anim* anim);\n"
+"void pxl8_anim_render_sprite(const pxl8_anim* anim, pxl8_gfx* gfx, i32 x, i32 y, i32 w, i32 h);\n"
+"void pxl8_anim_reset(pxl8_anim* anim);\n"
+"void pxl8_anim_set_frame(pxl8_anim* anim, u16 frame);\n"
+"void pxl8_anim_set_loop(pxl8_anim* anim, bool loop);\n"
+"void pxl8_anim_set_reverse(pxl8_anim* anim, bool reverse);\n"
+"void pxl8_anim_set_speed(pxl8_anim* anim, f32 speed);\n"
+"i32 pxl8_anim_set_state(pxl8_anim* anim, const char* name);\n"
+"void pxl8_anim_stop(pxl8_anim* anim);\n"
+"void pxl8_anim_update(pxl8_anim* anim, f32 dt);\n"
+"\n"
 "typedef struct { float x, y, z; } pxl8_vec3;\n"
 "typedef struct { float x, y, z, w; } pxl8_vec4;\n"
 "typedef struct { float m[16]; } pxl8_mat4;\n"

src/pxl8_sdl3.c

@@ -25,7 +25,7 @@ static void* sdl3_create(pxl8_color_mode mode, pxl8_resolution resolution,
                          const char* title, i32 win_w, i32 win_h) {
     (void)mode;
 
-    pxl8_sdl3_context* ctx = (pxl8_sdl3_context*)SDL_calloc(1, sizeof(*ctx));
+    pxl8_sdl3_context* ctx = (pxl8_sdl3_context*)SDL_calloc(1, sizeof(pxl8_sdl3_context));
     if (!ctx) {
         pxl8_error("Failed to allocate SDL3 context");
         return NULL;

src/pxl8_transition.c

@@ -0,0 +1,248 @@
+#include "pxl8_transition.h"
+
+#include <stdlib.h>
+#include <math.h>
+
+#include "pxl8_macros.h"
+#include "pxl8_math.h"
+
+pxl8_transition* pxl8_transition_create(pxl8_transition_type type, f32 duration) {
+    if (duration <= 0.0f) {
+        pxl8_error("Invalid transition duration: %f", duration);
+        return NULL;
+    }
+
+    pxl8_transition* transition = (pxl8_transition*)calloc(1, sizeof(pxl8_transition));
+    if (!transition) {
+        pxl8_error("Failed to allocate transition");
+        return NULL;
+    }
+
+    transition->type = type;
+    transition->duration = duration;
+    transition->time = 0.0f;
+    transition->active = false;
+    transition->reverse = false;
+    transition->color = 0xFF000000;
+    transition->on_complete = NULL;
+    transition->userdata = NULL;
+
+    return transition;
+}
+
+void pxl8_transition_destroy(pxl8_transition* transition) {
+    if (!transition) return;
+    free(transition);
+}
+
+f32 pxl8_transition_get_progress(const pxl8_transition* transition) {
+    if (!transition) return 0.0f;
+
+    f32 t = transition->time / transition->duration;
+    if (t < 0.0f) t = 0.0f;
+    if (t > 1.0f) t = 1.0f;
+
+    return transition->reverse ? 1.0f - t : t;
+}
+
+bool pxl8_transition_is_active(const pxl8_transition* transition) {
+    return transition && transition->active;
+}
+
+bool pxl8_transition_is_complete(const pxl8_transition* transition) {
+    if (!transition) return true;
+    return transition->time >= transition->duration;
+}
+
+void pxl8_transition_render(const pxl8_transition* transition, pxl8_gfx* gfx) {
+    if (!transition || !gfx || !transition->active) return;
+
+    f32 progress = pxl8_transition_get_progress(transition);
+    i32 width = pxl8_gfx_get_width(gfx);
+    i32 height = pxl8_gfx_get_height(gfx);
+
+    switch (transition->type) {
+        case PXL8_TRANSITION_FADE: {
+            u8 alpha = (u8)(progress * 255.0f);
+            u32 fade_color = (transition->color & 0x00FFFFFF) | (alpha << 24);
+
+            for (i32 y = 0; y < height; y++) {
+                for (i32 x = 0; x < width; x++) {
+                    u32 bg = pxl8_get_pixel(gfx, x, y);
+                    u32 r_bg = (bg >> 16) & 0xFF;
+                    u32 g_bg = (bg >> 8) & 0xFF;
+                    u32 b_bg = bg & 0xFF;
+
+                    u32 r_fg = (fade_color >> 16) & 0xFF;
+                    u32 g_fg = (fade_color >> 8) & 0xFF;
+                    u32 b_fg = fade_color & 0xFF;
+
+                    u32 r = (r_bg * (255 - alpha) + r_fg * alpha) / 255;
+                    u32 g = (g_bg * (255 - alpha) + g_fg * alpha) / 255;
+                    u32 b = (b_bg * (255 - alpha) + b_fg * alpha) / 255;
+
+                    pxl8_pixel(gfx, x, y, 0xFF000000 | (r << 16) | (g << 8) | b);
+                }
+            }
+            break;
+        }
+
+        case PXL8_TRANSITION_WIPE_LEFT: {
+            i32 wipe_x = (i32)(width * progress);
+            pxl8_rect_fill(gfx, 0, 0, wipe_x, height, transition->color);
+            break;
+        }
+
+        case PXL8_TRANSITION_WIPE_RIGHT: {
+            i32 wipe_x = (i32)(width * (1.0f - progress));
+            pxl8_rect_fill(gfx, wipe_x, 0, width - wipe_x, height, transition->color);
+            break;
+        }
+
+        case PXL8_TRANSITION_WIPE_UP: {
+            i32 wipe_y = (i32)(height * progress);
+            pxl8_rect_fill(gfx, 0, 0, width, wipe_y, transition->color);
+            break;
+        }
+
+        case PXL8_TRANSITION_WIPE_DOWN: {
+            i32 wipe_y = (i32)(height * (1.0f - progress));
+            pxl8_rect_fill(gfx, 0, wipe_y, width, height - wipe_y, transition->color);
+            break;
+        }
+
+        case PXL8_TRANSITION_CIRCLE_CLOSE: {
+            i32 center_x = width / 2;
+            i32 center_y = height / 2;
+            i32 max_radius = (i32)sqrtf((f32)(center_x * center_x + center_y * center_y));
+            i32 radius = (i32)(max_radius * (1.0f - progress));
+
+            for (i32 y = 0; y < height; y++) {
+                for (i32 x = 0; x < width; x++) {
+                    i32 dx = x - center_x;
+                    i32 dy = y - center_y;
+                    i32 dist = (i32)sqrtf((f32)(dx * dx + dy * dy));
+                    if (dist > radius) {
+                        pxl8_pixel(gfx, x, y, transition->color);
+                    }
+                }
+            }
+            break;
+        }
+
+        case PXL8_TRANSITION_CIRCLE_OPEN: {
+            i32 center_x = width / 2;
+            i32 center_y = height / 2;
+            i32 max_radius = (i32)sqrtf((f32)(center_x * center_x + center_y * center_y));
+            i32 radius = (i32)(max_radius * progress);
+
+            for (i32 y = 0; y < height; y++) {
+                for (i32 x = 0; x < width; x++) {
+                    i32 dx = x - center_x;
+                    i32 dy = y - center_y;
+                    i32 dist = (i32)sqrtf((f32)(dx * dx + dy * dy));
+                    if (dist < radius) {
+                        pxl8_pixel(gfx, x, y, transition->color);
+                    }
+                }
+            }
+            break;
+        }
+
+        case PXL8_TRANSITION_DISSOLVE: {
+            u32 seed = 12345;
+            for (i32 y = 0; y < height; y++) {
+                for (i32 x = 0; x < width; x++) {
+                    seed = seed * 1103515245 + 12345;
+                    f32 noise = (f32)((seed / 65536) % 1000) / 1000.0f;
+                    if (noise < progress) {
+                        pxl8_pixel(gfx, x, y, transition->color);
+                    }
+                }
+            }
+            break;
+        }
+
+        case PXL8_TRANSITION_PIXELATE: {
+            i32 max_block_size = 32;
+            i32 block_size = (i32)(max_block_size * progress);
+            if (block_size < 1) block_size = 1;
+
+            u8* fb = pxl8_gfx_get_framebuffer(gfx);
+            if (!fb) break;
+
+            for (i32 y = 0; y < height; y += block_size) {
+                for (i32 x = 0; x < width; x += block_size) {
+                    u32 color_sum_r = 0, color_sum_g = 0, color_sum_b = 0;
+                    i32 count = 0;
+
+                    for (i32 by = 0; by < block_size && y + by < height; by++) {
+                        for (i32 bx = 0; bx < block_size && x + bx < width; bx++) {
+                            u32 color = pxl8_get_pixel(gfx, x + bx, y + by);
+                            color_sum_r += (color >> 16) & 0xFF;
+                            color_sum_g += (color >> 8) & 0xFF;
+                            color_sum_b += color & 0xFF;
+                            count++;
+                        }
+                    }
+
+                    if (count > 0) {
+                        u32 avg_color = 0xFF000000 |
+                                        ((color_sum_r / count) << 16) |
+                                        ((color_sum_g / count) << 8) |
+                                        (color_sum_b / count);
+
+                        for (i32 by = 0; by < block_size && y + by < height; by++) {
+                            for (i32 bx = 0; bx < block_size && x + bx < width; bx++) {
+                                pxl8_pixel(gfx, x + bx, y + by, avg_color);
+                            }
+                        }
+                    }
+                }
+            }
+            break;
+        }
+    }
+}
+
+void pxl8_transition_reset(pxl8_transition* transition) {
+    if (!transition) return;
+    transition->time = 0.0f;
+    transition->active = false;
+}
+
+void pxl8_transition_set_color(pxl8_transition* transition, u32 color) {
+    if (!transition) return;
+    transition->color = color;
+}
+
+void pxl8_transition_set_reverse(pxl8_transition* transition, bool reverse) {
+    if (!transition) return;
+    transition->reverse = reverse;
+}
+
+void pxl8_transition_start(pxl8_transition* transition) {
+    if (!transition) return;
+    transition->active = true;
+    transition->time = 0.0f;
+}
+
+void pxl8_transition_stop(pxl8_transition* transition) {
+    if (!transition) return;
+    transition->active = false;
+}
+
+void pxl8_transition_update(pxl8_transition* transition, f32 dt) {
+    if (!transition || !transition->active) return;
+
+    transition->time += dt;
+
+    if (transition->time >= transition->duration) {
+        transition->time = transition->duration;
+        transition->active = false;
+
+        if (transition->on_complete) {
+            transition->on_complete(transition->userdata);
+        }
+    }
+}

src/pxl8_transition.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include "pxl8_gfx.h"
+#include "pxl8_types.h"
+
+typedef enum pxl8_transition_type {
+    PXL8_TRANSITION_FADE,
+    PXL8_TRANSITION_WIPE_LEFT,
+    PXL8_TRANSITION_WIPE_RIGHT,
+    PXL8_TRANSITION_WIPE_UP,
+    PXL8_TRANSITION_WIPE_DOWN,
+    PXL8_TRANSITION_CIRCLE_OPEN,
+    PXL8_TRANSITION_CIRCLE_CLOSE,
+    PXL8_TRANSITION_DISSOLVE,
+    PXL8_TRANSITION_PIXELATE
+} pxl8_transition_type;
+
+typedef struct pxl8_transition {
+    pxl8_transition_type type;
+    f32 duration;
+    f32 time;
+    bool active;
+    bool reverse;
+
+    u32 color;
+
+    void (*on_complete)(void* userdata);
+    void* userdata;
+} pxl8_transition;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+pxl8_transition* pxl8_transition_create(pxl8_transition_type type, f32 duration);
+void pxl8_transition_destroy(pxl8_transition* transition);
+
+f32 pxl8_transition_get_progress(const pxl8_transition* transition);
+bool pxl8_transition_is_active(const pxl8_transition* transition);
+bool pxl8_transition_is_complete(const pxl8_transition* transition);
+void pxl8_transition_render(const pxl8_transition* transition, pxl8_gfx* gfx);
+void pxl8_transition_reset(pxl8_transition* transition);
+void pxl8_transition_set_color(pxl8_transition* transition, u32 color);
+void pxl8_transition_set_reverse(pxl8_transition* transition, bool reverse);
+void pxl8_transition_start(pxl8_transition* transition);
+void pxl8_transition_stop(pxl8_transition* transition);
+void pxl8_transition_update(pxl8_transition* transition, f32 dt);
+
+#ifdef __cplusplus
+}
+#endif