Palette loading done.

src/asset/CMakeLists.txt

@@ -7,6 +7,8 @@
 target_sources(${DUSK_TARGET_NAME}
   PRIVATE
     asset.c
+    assetpalette.c
+    assettileset.c
 )
 
 # Compile definitions

src/asset/asset.c

@@ -55,7 +55,11 @@ errorret_t assetInit(void) {
   errorOk();
 }
 
-void assetLoad(const char_t *filename) {
+void assetLoad(
+  const char_t *filename,
+  void (*callback)(void* data),
+  void *data
+) {
   assertNotNull(filename, "Filename cannot be NULL.");
   assertTrue(strlen(filename) < ASSET_FILENAME_MAX, "Filename too long.");
   assertTrue(strlen(filename) > 0, "Filename cannot be empty.");
@@ -74,6 +78,8 @@ void assetLoad(const char_t *filename) {
   assertNotNull(expected->extension, "Unknown asset type.");
   
   // Pass off to the thread to begin loading.
+  ASSET.callback = callback;
+  ASSET.callbackData = data;
   ASSET.errorState = ERROR_STATE_INIT;
   ASSET.state = ASSET_STATE_LOADING;
   stringCopy(ASSET.filename, filename, ASSET_FILENAME_MAX);
@@ -88,6 +94,7 @@ void assetLoad(const char_t *filename) {
       "Failed to open asset: %s",
       filename
     );
+    if(ASSET.callback) ASSET.callback(ASSET.callbackData);
     return;
   }
 
@@ -101,11 +108,13 @@ void assetLoad(const char_t *filename) {
       "Failed to stat asset: %s",
       filename
     );
+    if(ASSET.callback) ASSET.callback(ASSET.callbackData);
     return;
   }
 
   if(st.size > sizeof(ASSET.data.palette)) {
     zip_fclose(file);
+    ASSET.state = ASSET_STATE_ERROR;
     ASSET.error = errorCreate(
       &ASSET.errorState,
       "Asset size mismatch: %s (got %d, expected %d)",
@@ -113,11 +122,12 @@ void assetLoad(const char_t *filename) {
       (int)st.size,
       (int)sizeof(ASSET.data.palette)
     );
+    if(ASSET.callback) ASSET.callback(ASSET.callbackData);
     return;
   }
 
   // Read entire file into the asset data.
-  zip_fread(file, &ASSET.data, st.size);
+  zip_fread(file, &ASSET.data, st.size); 
   zip_fclose(file);
   ASSET.state = ASSET_STATE_LOADED;
 
@@ -136,10 +146,16 @@ void assetLoad(const char_t *filename) {
       expected->header[1],
       expected->header[2]
     );
+    if(ASSET.callback) ASSET.callback(ASSET.callbackData);
     return;
   }
 
+  // Parse the asset.
+  assertNotNull(expected->parser, "Asset parser cannot be NULL.");
+  expected->parser();
+
   printf("Loaded asset: %s\n", filename);
+  if(ASSET.callback) ASSET.callback(ASSET.callbackData);
 }
 
 void assetDispose(void) {

src/asset/asset.h

@@ -11,6 +11,7 @@
 #include "assettileset.h"
 #include "error/error.h"
 #include <zip.h>
+#include "display/texture/texture.h"
 
 #define ASSET_COUNT_MAX 128
 #define ASSET_FILENAME_MAX 128
@@ -21,6 +22,7 @@
   #error "Unsupported ASSET_TYPE"
 #endif
 
+#pragma pack(push, 1)
 typedef struct {
   char_t header[ASSET_HEADER_LENGTH];
   union {
@@ -28,6 +30,14 @@ typedef struct {
     assettileset_t tileset;
   };
 } assetdata_t;
+#pragma pack(pop)
+
+typedef struct {
+  union {
+    texture_t palette;
+    assettileset_t *tileset;
+  };
+} assetloaded_t;
 
 typedef enum {
   ASSET_STATE_NONE,
@@ -46,11 +56,16 @@ typedef struct {
   assetstate_t state;
   char_t filename[ASSET_FILENAME_MAX];
   assetdata_t data;
+  assetloaded_t loaded;
+
+  void (*callback)(void* data);
+  void *callbackData;
 } asset_t;
 
 typedef struct {
   const char_t *header;
   const char_t *extension;
+  void (*parser)();
 } assetmap_t;
 
 static const char_t ASSET_SEARCH_PATHS[][FILENAME_MAX] = {
@@ -63,9 +78,9 @@ static const char_t ASSET_SEARCH_PATHS[][FILENAME_MAX] = {
 };
 
 static const assetmap_t ASSET_MAP[] = {
-  { "DPF", "test.palette.dpf" },
-  { "DPT", "test.tileset.dpt" },
-  { NULL, NULL }
+  { "DPF", ".dpf", assetParsePalette },
+  { "DPT", ".dpt", assetParseTileset },
+  { NULL, NULL, NULL }
 };
 
 #define ASSET_SEARCH_PATHS_COUNT (\
@@ -83,9 +98,15 @@ errorret_t assetInit(void);
  * Gets an asset by filename, does not load it.
  * 
  * @param filename The filename of the asset to get.
+ * @param callback The callback to call when the asset is loaded.
+ * @param data The data for the callback function.
  * @return The asset.
  */
-void assetLoad(const char_t *filename);
+void assetLoad(
+  const char_t *filename,
+  void (*callback)(void* data),
+  void *data
+);
 
 /**
  * Disposes/cleans up the asset system.

src/asset/assetpalette.c

@@ -0,0 +1,18 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "asset.h"
+
+void assetParsePalette() {
+  textureInit(
+    &ASSET.loaded.palette,
+    ASSET.data.palette.colorCount,
+    1,
+    TEXTURE_FORMAT_RGBA,
+    ASSET.data.palette.colors
+  );
+}

src/asset/assetpalette.h

@@ -14,4 +14,9 @@
 typedef struct {
   int32_t colorCount;
   color4b_t colors[ASSET_PALETTE_COLOR_COUNT_MAX];
-} assetpalette_t;
+} assetpalette_t;
+
+/**
+ * Parse the palette from the loaded raw data.
+ */
+void assetParsePalette();

src/asset/assettileset.c

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "asset.h"
+
+void assetParseTileset() {
+  ASSET.loaded.tileset = &ASSET.data.tileset;
+}

src/asset/assettileset.h

@@ -16,4 +16,9 @@ typedef struct {
   int32_t tileCount;
   int32_t columns;
   char_t tilesetName[256];
-} assettileset_t;
+} assettileset_t;
+
+/**
+ * Parse the tileset from the loaded raw data.
+ */
+void assetParseTileset();

src/engine/engine.c

@@ -18,6 +18,12 @@
 
 engine_t ENGINE;
 
+void assetLoadCallback(void *data) {
+  consolePrint("Asset load callback called!");
+  test = ASSET.loaded.palette;
+  consolePrint("Loaded palette with %d colors", ASSET.data.palette.colorCount);
+}
+
 errorret_t engineInit(void) {
   memoryZero(&ENGINE, sizeof(engine_t));
   ENGINE.running = true;
@@ -28,9 +34,8 @@ errorret_t engineInit(void) {
   ecsSystemInit();
   errorChain(assetInit());
   errorChain(displayInit());
-  
-  // assetLoad("test.palette.dp123123");
-  assetLoad("test.palette.dpf");
+
+  assetLoad("test.palette.dpf", assetLoadCallback, NULL);
   if(ASSET.state == ASSET_STATE_ERROR) errorChain(ASSET.error);
 
   sceneTestAdd();

src/scene/test/scenetest.c

@@ -28,11 +28,11 @@ void sceneTestAdd(void) {
   );
   nodeMatrixSet(camera, lookAt);
 
-  color4b_t pixels[4] = {
-    COLOR_RED, COLOR_GREEN,
-    COLOR_BLUE, COLOR_WHITE
-  };
-  textureInit(&test, 2, 2, TEXTURE_FORMAT_RGBA, pixels);
+  // color4b_t pixels[4] = {
+  //   COLOR_RED, COLOR_GREEN,
+  //   COLOR_BLUE, COLOR_WHITE
+  // };
+  // textureInit(&test, 2, 2, TEXTURE_FORMAT_RGBA, pixels);
 
   // Test cube
   ecsid_t cube = ecsEntityAdd();

src/scene/test/scenetest.h

@@ -7,5 +7,8 @@
 
 #pragma once
 #include "ecs/ecssystem.h"
+#include "display/texture/texture.h"
+
+extern texture_t test;
 
 void sceneTestAdd(void);

tools/assetstool/processimage.py

@@ -1,6 +1,7 @@
 import os
 from args import args
 from PIL import Image
+import struct
 
 def extractPaletteFromImage(image):
   # goes through and finds all unique colors in the image
@@ -14,19 +15,14 @@ def extractPaletteFromImage(image):
   return uniqueColors
 
 def savePalette(pixels, outputFilePath):
-  # Pixels is a list of (R, G, B, A) tuples
-  data = "DPF"  # Header for Dusk Palette Format
-
-  # Count of colors (int32_t)
   colorCount = len(pixels)
-  data += colorCount.to_bytes(4, byteorder='little').decode('latin1')
-
-  for r, g, b, a in pixels:
-    data += bytes([r, g, b, a]).decode('latin1')
-
+  buf = bytearray(b"DPF")
+  buf += struct.pack("<i", colorCount)           # little-endian int32_t
+  for r, g, b, a in pixels:                      # each channel 0..255
+    buf += struct.pack("BBBB", r, g, b, a)     # raw bytes
   os.makedirs(os.path.dirname(outputFilePath), exist_ok=True)
-  with open(outputFilePath, 'wb') as f:
-    f.write(data.encode('latin1'))
+  with open(outputFilePath, "wb") as f:
+    f.write(buf)
 
 def processPalette(assetPath):
   # Process the image file