Test lua rgb rainbow

assets/init.lua

@@ -51,5 +51,5 @@ else
   end 
 end
 
--- localeSet(DUSK_LOCALE_EN_US)
+localeSet(DUSK_LOCALE_EN_US)
 sceneSet('scene/initial.dsf')

assets/scene/initial.lua

@@ -1,15 +1,12 @@
 module('spritebatch')
 module('camera')
 module('color')
--- module('ui')
 module('text')
 module('screen')
 module('time')
--- module('map')
 module('glm')
 
 screenSetBackground(colorBlack())
--- mapLoad('map/testmap/testmap.dmf')
 camera = cameraCreate(CAMERA_PROJECTION_TYPE_ORTHOGRAPHIC)
 
 text = "Hello World"
@@ -21,11 +18,6 @@ function sceneUpdate()
 end
 
 function sceneRender()
-  -- Map Test
-  -- cameraPushMatrix(mapCamera)
-  -- mapRender()
-  -- cameraPopMatrix()
-  
   -- UI Test
   cameraPushMatrix(camera)
   camera.bottom = screenGetHeight()
@@ -36,7 +28,16 @@ function sceneRender()
   x = math.sin(TIME.time * 2) * (x / 2) + (x / 2)
   y = (screenGetHeight() - height) / 2
   y = math.cos(TIME.time * 3) * (y) + (y)
-  textDraw(x, y, text, colorMagenta())
+
+  -- For each letter
+  for i = 1, #text do
+    letter = text:sub(i, i)
+    letterWidth, _ = textMeasure(letter)
+
+    -- Draw letter with rainbow color
+    textDraw(x, y, letter, colorRainbow((i - 1) * 0.1, 8))
+    x = x + letterWidth
+  end
 
   cameraPopMatrix()
 end

src/asset/asset.c

@@ -151,7 +151,6 @@ errorret_t assetInit(void) {
         fclose(ASSET.pbpFile);
         errorThrow("Failed to read PBP header", pbpPath);
       }
-
  if(memoryCompare(
         ASSET.pbpHeader.signature,
         ASSET_PBP_SIGNATURE,

src/script/module/CMakeLists.txt

@@ -4,6 +4,7 @@
 # https://opensource.org/licenses/MIT
 
 # Subdirectories
+add_subdirectory(asset)
 add_subdirectory(display)
 add_subdirectory(event)
 add_subdirectory(input)

src/script/module/asset/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (c) 2026 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_LIBRARY_TARGET_NAME}
+  PUBLIC
+    moduleasset.c
+)

src/script/module/asset/moduleasset.c

@@ -0,0 +1,59 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "moduleasset.h"
+#include "asset/asset.h"
+#include "display/texture.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+
+void moduleAsset(scriptcontext_t *context) {
+  assertNotNull(context, "Script context cannot be null");
+
+  lua_State *l = context->luaState;
+  assertNotNull(l, "Lua state cannot be null");
+
+  // Create metatable for texture structure.
+
+  lua_register(context->luaState, "assetTextureLoad", moduleAssetTextureLoad);
+  lua_register(context->luaState, "assetTextureDispose", moduleAssetTextureDispose);
+}
+
+int moduleAssetTextureLoad(lua_State *l) {
+  assertNotNull(l, "Lua state cannot be NULL.");
+  
+  const char_t *filename = luaL_checkstring(l, 2);
+  assertStrLenMin(filename, 1, "Filename cannot be empty.");
+
+  // Create texture owned to lua
+  texture_t *tex = (texture_t *)lua_newuserdata(l, sizeof(texture_t));
+  memoryZero(tex, sizeof(texture_t));
+
+  errorret_t ret = assetLoad(filename, tex);
+  if(ret.code != ERROR_OK) {
+    errorCatch(errorPrint(ret));
+    luaL_error(l, "Failed to load texture asset: %s", filename);
+    return 0;
+  }
+
+  // Set metatable
+  luaL_getmetatable(l, "texture_mt");
+  lua_setmetatable(l, -2);
+
+  // Return the texture
+  return 1;
+}
+
+int moduleAssetTextureDispose(lua_State *l) {
+  assertNotNull(l, "Lua state cannot be NULL.");
+
+  texture_t *tex = (texture_t *)luaL_checkudata(l, 1, "texture_mt");
+  assertNotNull(tex, "Texture pointer cannot be NULL.");
+
+  textureDispose(tex);
+  return 0;
+}

src/script/module/asset/moduleasset.h

@@ -0,0 +1,20 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "script/scriptcontext.h"
+
+/**
+ * Register asset functions to the given script context.
+ * 
+ * @param context The script context to register asset functions to.
+ */
+void moduleAsset(scriptcontext_t *context);
+
+int moduleAssetTextureLoad(lua_State *l);
+
+int moduleAssetTextureDispose(lua_State *l);

src/script/module/display/modulecolor.c

@@ -9,6 +9,7 @@
 #include "display/color.h"
 #include "assert/assert.h"
 #include "util/string.h"
+#include "time/time.h"
 
 void moduleColor(scriptcontext_t *context) {
   assertNotNull(context, "Context cannot be NULL.");
@@ -31,6 +32,7 @@ void moduleColor(scriptcontext_t *context) {
   }
 
   lua_register(context->luaState, "color", moduleColorFuncColor);
+  lua_register(context->luaState, "colorRainbow", moduleColorRainbow);
 
   scriptContextExec(context, COLOR_SCRIPT);
 }
@@ -149,3 +151,37 @@ int moduleColorToString(lua_State *L) {
 
   return 1;
 }
+
+int moduleColorRainbow(lua_State *L) {
+  assertNotNull(L, "Lua state cannot be NULL.");
+
+  // Allow time offset
+  float_t t = TIME.time;
+  if(lua_gettop(L) >= 1) {
+    if(!lua_isnumber(L, 1)) {
+      return luaL_error(L, "Rainbow time offset must be a number.");
+    }
+    t += (float_t)lua_tonumber(L, 1);
+  }
+
+  // Allow speed multiplier
+  if(lua_gettop(L) >= 2) {
+    if(!lua_isnumber(L, 2)) {
+      return luaL_error(L, "Rainbow speed multiplier must be a number.");
+    }
+    t *= (float_t)lua_tonumber(L, 2);
+  }
+
+  // Generate rainbow based on time.
+  color_t *color = (color_t *)lua_newuserdata(L, sizeof(color_t));
+  color->r = (colorchannel8_t)((sinf(t) + 1.0f) * 0.5f * 255.0f);
+  color->g = (colorchannel8_t)((sinf(t + 2.0f) + 1.0f) * 0.5f * 255.0f);
+  color->b = (colorchannel8_t)((sinf(t + 4.0f) + 1.0f) * 0.5f * 255.0f);
+  color->a = 255;
+
+  // Set metatable
+  luaL_getmetatable(L, "color_mt");
+  lua_setmetatable(L, -2);
+
+  return 1;
+}

src/script/module/display/modulecolor.h

@@ -45,3 +45,11 @@ int moduleColorNewIndex(lua_State *L);
  * @return Number of return values.
  */
 int moduleColorToString(lua_State *L);
+
+/**
+ * Lua function to create a rainbow color based on time.
+ * 
+ * @param L The Lua state.
+ * @return Number of return values.
+ */
+int moduleColorRainbow(lua_State *L);

src/script/module/scene/modulescene.c

@@ -28,8 +28,8 @@ int moduleSceneSet(lua_State *L) {
   
   errorret_t err = sceneSet(script);
   if(err.code != ERROR_OK) {
-    luaL_error(L, "Failed to set scene");
     errorCatch(errorPrint(err));
+    luaL_error(L, "Failed to set scene");
     return 0;
   }
 

src/script/scriptmodule.c

@@ -23,6 +23,7 @@
 #include "script/module/display/modulescreen.h"
 #include "script/module/story/modulestoryflag.h"
 #include "script/module/map/modulemap.h"
+#include "script/module/asset/moduleasset.h"
 #include "util/string.h"
 
 const scriptmodule_t SCRIPT_MODULE_LIST[] = {
@@ -43,6 +44,7 @@ const scriptmodule_t SCRIPT_MODULE_LIST[] = {
   { .name = "screen", .callback = moduleScreen },
   { .name = "storyflag", .callback = moduleStoryFlag },
   { .name = "map", .callback = moduleMap },
+  { .name = "asset", .callback = moduleAsset },
 };
 
 #define SCRIPT_MODULE_COUNT ( \