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add collision

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This commit is contained in:
asrael 2025-11-21 16:44:42 -06:00
parent 8baf5f06ea
commit 2427e3a504
7 changed files with 302 additions and 52 deletions
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50
demo/mod/worldgen.fnl
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@ -1,14 +1,24 @@
(local pxl8 (require :pxl8))
(local bob-amount 4.0)
(local bob-speed 8.0)
(var bob-time 0)
(var world nil)
(var auto-run? false)
(var cam-pitch 0)
(var cam-x 1000)
(var cam-y 64)
(var cam-yaw 0)
(var cam-z 1000)
(var cursor-look? true)
(var smooth-cam-x 1000)
(var smooth-cam-z 1000)
(local cam-smoothing 0.25)
(local bob-amount 4.0)
(local bob-speed 8.0)
(var bob-time 0)
(local cell-size 64)
(local cursor-sensitivity 0.008)
(local gravity -800)
(local grid-size 64)
(var grounded? true)
@ -18,13 +28,9 @@
(local land-squash-amount -4)
(var land-squash 0)
(local max-pitch 1.5)
(var mouse-look? true)
(local mouse-sensitivity 0.008)
(local move-speed 200)
(local turn-speed 2.0)
(var velocity-y 0)
(var world nil)
(var auto-run? false)
(fn init []
(set world (pxl8.world_new))
@ -111,27 +117,31 @@
(when (and (>= new-x 0) (<= new-x grid-max)
(>= new-z 0) (<= new-z grid-max))
(set cam-x new-x)
(set cam-z new-z))
(let [(resolved-x resolved-y resolved-z) (pxl8.world_resolve_collision world cam-x cam-y cam-z new-x cam-y new-z 5)]
(set cam-x resolved-x)
(set cam-z resolved-z)))
(when mouse-look?
(set smooth-cam-x (+ (* smooth-cam-x (- 1 cam-smoothing)) (* cam-x cam-smoothing)))
(set smooth-cam-z (+ (* smooth-cam-z (- 1 cam-smoothing)) (* cam-z cam-smoothing)))
(when cursor-look?
(let [dx (pxl8.mouse_dx)
dy (pxl8.mouse_dy)]
(set cam-yaw (- cam-yaw (* dx mouse-sensitivity)))
(set cam-yaw (- cam-yaw (* dx cursor-sensitivity)))
(set cam-pitch (math.max (- max-pitch)
(math.min max-pitch
(- cam-pitch (* dy mouse-sensitivity)))))))
(- cam-pitch (* dy cursor-sensitivity)))))))
(when (and (not mouse-look?) (pxl8.key_down "left"))
(when (and (not cursor-look?) (pxl8.key_down "left"))
(set cam-yaw (+ cam-yaw (* turn-speed dt))))
(when (and (not mouse-look?) (pxl8.key_down "right"))
(when (and (not cursor-look?) (pxl8.key_down "right"))
(set cam-yaw (- cam-yaw (* turn-speed dt))))
(when (and (not mouse-look?) (pxl8.key_down "up"))
(when (and (not cursor-look?) (pxl8.key_down "up"))
(set cam-pitch (math.min max-pitch (+ cam-pitch (* turn-speed dt)))))
(when (and (not mouse-look?) (pxl8.key_down "down"))
(when (and (not cursor-look?) (pxl8.key_down "down"))
(set cam-pitch (math.max (- max-pitch) (- cam-pitch (* turn-speed dt)))))
(when (and (pxl8.key_pressed "space") grounded?)
@ -164,9 +174,9 @@
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)
target-x (+ smooth-cam-x forward-x)
target-y (+ eye-y (math.sin cam-pitch))
target-z (+ cam-z forward-z)]
target-z (+ smooth-cam-z forward-z)]
(pxl8.clear_zbuffer)
(pxl8.set_backface_culling true)
@ -177,13 +187,13 @@
(pxl8.set_projection (pxl8.mat4_perspective fov aspect 1.0 4096.0)))
(pxl8.set_view (pxl8.mat4_lookat
[cam-x eye-y cam-z]
[smooth-cam-x eye-y smooth-cam-z]
[target-x target-y target-z]
[0 1 0]))
(pxl8.set_model (pxl8.mat4_identity))
(pxl8.world_render world [cam-x eye-y cam-z])
(pxl8.world_render world [smooth-cam-x eye-y smooth-cam-z])
(let [cx (/ (pxl8.get_width) 2)
cy (/ (pxl8.get_height) 2)