clean up worldgen and remove verbose logging

src/lua/pxl8.lua

@@ -469,11 +469,64 @@ function pxl8.world_generate(world, params)
     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, c_params)
+    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)
+    local callbacks = {}
+
+    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
+            local cb = 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)
+            textures[idx].rule = cb
+            callbacks[idx + 1] = cb
+        else
+            textures[idx].rule = nil
+        end
+    end
+
+    local result = C.pxl8_world_apply_textures(world, textures, count)
+
+    return result
+end
+
 return pxl8