Technically refactored.

src/file/loaders/font.c

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+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "font.h"
+
+assetmanageritem_t * assetManagerLoadFont(
+  assetmanager_t *manager, assetmanagerowner_t owner, char *fileName
+) {
+  assetmanageritem_t *item; 
+  item = assetManagerItemGet(manager, fileName);
+  if(item == NULL) {
+    item = assetManagerItemAdd(manager, fileName);
+    item->type = ASSET_MANAGER_TYPE_FONT;
+    item->data.font.fileName = fileName;
+  }
+  assetManagerItemGetOrAddHolder(item, owner);
+
+  return item;
+}
+
+bool _assetManagerLoaderFontAsync(assetmanageritem_t *item) {
+  item->data.font.data = assetStringLoad(item->data.font.fileName);
+  return item->data.font.data != NULL;
+}
+
+bool _assetManagerLoaderFontSync(assetmanageritem_t *item) {
+  fontInit(&item->data.font.font, item->data.font.data);
+  free(item->data.font.data);
+  return true;
+}
+
+bool _assetManagerLoaderFontDispose(assetmanageritem_t *item) {
+  fontDispose(&item->data.font.font);
+  return true;
+}

src/file/loaders/font.h

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "item.h"
+#include "../asset.h"
+
+/**
+ * Queue a font load onto the asset manager buffer.
+ * 
+ * @param manager Manager to queue on to.
+ * @param owner Owner ID requesting to load this resource.
+ * @param font Font to push the result in to.
+ * @param fileName Filename of the asset to load.
+ * @return A pointer to the asset manager item for tracking.
+ */
+assetmanageritem_t * assetManagerLoadFont(
+  assetmanager_t *manager, assetmanagerowner_t owner, char *fileName
+);
+
+bool _assetManagerLoaderFontAsync(assetmanageritem_t *item);
+bool _assetManagerLoaderFontSync(assetmanageritem_t *item);
+bool _assetManagerLoaderFontDispose(assetmanageritem_t *item);

src/file/loaders/item.c

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+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "item.h"
+
+assetmanageritem_t * assetManagerItemGet(assetmanager_t *man, char *key) {
+  uint8_t i;
+  assetmanageritem_t *item;
+
+  for(i = 0; i < man->itemCount; i++) {
+    item = man->items + i;
+    if(strcmp(item->key, key) == 0) return item;
+  }
+
+  return NULL;
+}
+
+assetmanageritem_t * assetManagerItemAdd(assetmanager_t *manager, char *key) {
+  // Check if key already exists.
+  assetmanageritem_t *item = manager->items + manager->itemCount++;
+  item->state = ASSET_MANAGER_STATE_NOT_READY;
+  memcpy(item->key, key, strlen(key) + 1);
+  item->holderCount = 0x00;
+  return item;
+}
+
+uint8_t assetManagerItemGetOrAddHolder(
+  assetmanageritem_t *item, assetmanagerowner_t owner
+) {
+  uint8_t i, firstEmpty;
+  firstEmpty = 0xFF;
+
+  for(i = 0; i < item->holderCount; i++) {
+    if(item->holders[i] == owner) return i;
+    if(firstEmpty == 0xFF && item->holders[i] == 0xFF) {
+      firstEmpty = i;
+    }
+  }
+
+  if(firstEmpty == 0xFF) firstEmpty = item->holderCount++;
+  item->holders[firstEmpty] = owner;
+  return firstEmpty;
+}
+
+bool assetManagerItemIsFinished(assetmanageritem_t *item, assetmanagerloaderdefinition_t *def) {
+  // Sync done is always done
+  if(item->state == ASSET_MANAGER_STATE_SYNC_DONE) return true;
+  // Only check if ASYNC is done.
+  if(item->state != ASSET_MANAGER_STATE_ASYNC_DONE) return false;
+  // Does it need to still sync load?
+  if(def->loadSync == NULL) return true;
+  return false;
+}

src/file/loaders/item.h

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+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "../types/common.h"
+
+/**
+ * Retreive an exisitng asset manager item by its key.
+ * 
+ * @param man Manager to get from
+ * @param key Key to search for.
+ * @return The matching asset manager item, or NULL if not found.
+ */
+assetmanageritem_t * assetManagerItemGet(assetmanager_t *man, char *key);
+
+/**
+ * Private method, simply adds an item to the manager and resets the state.
+ * 
+ * @param manager Manager to add to.
+ * @param key Key to use when adding.
+ * @return The added and reset item.
+ */
+assetmanageritem_t * assetManagerItemAdd(assetmanager_t *manager, char *key);
+
+/**
+ * Add or get the index that a given holder has as a manager item.
+ * 
+ * @param i Asset Item to check.
+ * @param o Owner to get/add.
+ * @return The index within the item that the owner is at.
+ */
+uint8_t assetManagerItemGetOrAddHolder(
+  assetmanageritem_t *i, assetmanagerowner_t o
+);
+
+/**
+ * Checks if a given asset item is finished or not.
+ * 
+ * @param item Item to check.
+ * @param def Item type definition used for loading.
+ * @return True if finished, otherwise false.
+ */
+bool assetManagerItemIsFinished(
+  assetmanageritem_t *item, assetmanagerloaderdefinition_t *def
+);

src/file/loaders/scaledtexture.c

@@ -0,0 +1,123 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "scaledtexture.h"
+
+assetmanageritem_t * assetManagerLoadScaledTexture(
+  assetmanager_t *manager, assetmanagerowner_t owner,
+  char *path, char *file, uint8_t scale
+) {
+  assetmanageritem_t *item;
+  texturescale_t *st;
+  char buffer[ASSET_MANAGER_ITEM_NAME_MAX];
+  
+  sprintf(buffer, "%s/%s_%u", path, file, scale);
+  item = assetManagerItemGet(manager, buffer);
+  
+  if(item == NULL) {
+    item = assetManagerItemAdd(manager, buffer);
+    item->type = ASSET_MANAGER_TYPE_SCALED_TEXTURE;
+    item->data.scaledTexture.scale = scale;
+
+    st = &item->data.scaledTexture.textureScale;
+    st->scaleCount = 0;
+    st->baseWidth = 0;
+    st->baseHeight = 0;
+    st->path = path;
+    st->file = file;
+  }
+
+  assetManagerItemGetOrAddHolder(item, owner);
+  return item;
+}
+
+bool _assetManagerLoaderScaledTextureAsync(assetmanageritem_t *item) {
+  char buffer[128];
+  char *xmlData;
+  xml_t xml;
+  xml_t *child;
+  int16_t i, j;
+  texturescale_t *st;
+  texturescalescale_t *sts;
+  size_t length;
+
+  // TODO: This can be improved if we allow both asset dependencies and 
+  // dependency sibling adding
+
+  st = &item->data.scaledTexture.textureScale;
+
+  // Begin loading texture XML
+  sprintf(buffer, "%s/%s.xml", st->path, st->file);
+
+  xmlData = assetStringLoad(buffer);
+  if(xmlData == NULL) return false;
+  xmlLoad(&xml, xmlData);
+  free(xmlData);
+
+  // Parse root texture info
+  i = xmlGetAttributeByName(&xml, "channels");
+  st->channels = (uint8_t)atoi(xml.attributeDatas[i]);
+  i = xmlGetAttributeByName(&xml, "width");
+  st->baseWidth = (int16_t)atoi(xml.attributeDatas[i]);
+  i = xmlGetAttributeByName(&xml, "height");
+  st->baseHeight = (int16_t)atoi(xml.attributeDatas[i]);
+
+  for(j = 0; j < xml.childrenCount; j++) {
+    child = xml.children + j;
+    i = xmlGetAttributeByName(child, "scale");
+    st->scales[st->scaleCount].scale = (uint8_t)atoi(child->attributeDatas[i]);
+    i = xmlGetAttributeByName(child, "width");
+    st->scales[st->scaleCount].width = (int16_t)atoi(child->attributeDatas[i]);
+    i = xmlGetAttributeByName(child, "height");
+    st->scales[st->scaleCount].height = (int16_t)atoi(child->attributeDatas[i]);
+    st->scaleCount++;
+  }
+
+  // Cleanup XML
+  xmlDispose(&xml);
+
+  // Get the scale
+  sts = st->scales + item->data.scaledTexture.scale;
+
+  // Get filename
+  sprintf(buffer, "%s/%s_%i.texture", st->path, st->file, sts->scale);
+
+  // Create some space
+  length = assetRawLoad(buffer, NULL);
+  if(length == 0) return false;
+  item->data.scaledTexture.data = malloc(sizeof(pixel_t) * length);
+
+  // Load
+  length = assetRawLoad(buffer, (uint8_t *)item->data.scaledTexture.data);
+  if(length == 0) {
+    free(item->data.scaledTexture.data);
+    return false;
+  }
+  
+  return true;
+}
+
+bool _assetManagerLoaderScaledTextureSync(assetmanageritem_t *item) {
+  texturescale_t *st;
+  texturescalescale_t *sts;
+  st = &item->data.scaledTexture.textureScale;
+  sts = st->scales + item->data.scaledTexture.scale;
+
+  textureInit(
+    &item->data.scaledTexture.texture,
+    sts->width, sts->height,
+    item->data.scaledTexture.data
+  );
+
+  free(item->data.scaledTexture.data);
+  return true;
+}
+
+bool _assetManagerLoaderScaledTextureDispose(assetmanageritem_t *item) {
+  textureDispose(&item->data.scaledTexture.texture);
+  return true;
+}

src/file/loaders/scaledtexture.h

@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "item.h"
+#include "../xml.h"
+#include "../asset.h"
+
+/**
+ * Load the given texture scale for a scaled texture.
+ * 
+ * @param manager Manager to queue on to.
+ * @param owner Owner ID requesting to load this resource.
+ * @param path Path of the texture size sets
+ * @param file Name of the texture that was generated.
+ * @param scale Scale to load.
+ * @return A pointer to the asset manager item for tracking.
+ */
+assetmanageritem_t * assetManagerLoadScaledTexture(
+  assetmanager_t *manager, assetmanagerowner_t owner,
+  char *path, char *file, uint8_t scale
+);
+
+bool _assetManagerLoaderScaledTextureAsync(assetmanageritem_t *item);
+bool _assetManagerLoaderScaledTextureSync(assetmanageritem_t *item);
+bool _assetManagerLoaderScaledTextureDispose(assetmanageritem_t *item);

src/file/loaders/shader.c

@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "shader.h"
+
+assetmanageritem_t * assetManagerLoadShader(
+  assetmanager_t *manager, assetmanagerowner_t owner,
+  char *fileVert, char *fileFrag
+) {
+  assetmanageritem_t *item;
+  char buffer[ASSET_MANAGER_ITEM_NAME_MAX];
+  sprintf(buffer, "%s/%s", fileVert, fileFrag);
+  item = assetManagerItemGet(manager, buffer);
+  if(item == NULL) {
+    item = assetManagerItemAdd(manager, buffer);
+    item->type = ASSET_MANAGER_TYPE_SHADER;
+    item->data.shader.fileVert = fileVert;
+    item->data.shader.fileFrag = fileFrag;
+  }
+  assetManagerItemGetOrAddHolder(item, owner);
+  return item;
+}
+
+bool _assetManagerLoaderShaderAsync(assetmanageritem_t *item) {
+  item->data.shader.dataVert = assetStringLoad(item->data.shader.fileVert);
+  if(item->data.shader.dataVert == NULL) return false;
+
+  item->data.shader.dataFrag = assetStringLoad(item->data.shader.fileFrag);
+  if(item->data.shader.dataFrag == NULL) {
+    free(item->data.shader.fileVert);
+    return false;
+  }
+  
+  return true;
+}
+
+bool _assetManagerLoaderShaderSync(assetmanageritem_t *item) {
+  shaderInit(
+    &item->data.shader.shader,
+    item->data.shader.dataVert,
+    item->data.shader.dataFrag
+  );
+  free(item->data.shader.dataFrag);
+  free(item->data.shader.dataVert);
+  return true;
+}
+
+bool _assetManagerLoaderShaderDispose(assetmanageritem_t *item) {
+  shaderDispose(&item->data.shader.shader);
+  return true;
+}

src/file/loaders/shader.h

@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "item.h"
+#include "../asset.h"
+
+/**
+ * Queues a shader load onto the asset manager buffer.
+ * 
+ * @param manager Manager to queue on to.
+ * @param owner Owner ID requesting to load this resource.
+ * @param shader Shader to push the result in to.
+ * @param fileVert Vertex file in question to load.
+ * @param fileFrag Fragment file in question to load.
+ * @return A pointer to the asset manager item for tracking.
+ */
+assetmanageritem_t * assetManagerLoadShader(
+  assetmanager_t *manager, assetmanagerowner_t owner,
+  char *fileVert, char *fileFrag
+);
+
+bool _assetManagerLoaderShaderAsync(assetmanageritem_t *item);
+bool _assetManagerLoaderShaderSync(assetmanageritem_t *item);
+bool _assetManagerLoaderShaderDispose(assetmanageritem_t *item);

src/file/loaders/texture.c

@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "texture.h"
+
+assetmanageritem_t * assetManagerLoadTexture(
+  assetmanager_t *manager, assetmanagerowner_t owner, char *fileName
+) {
+  assetmanageritem_t *item;
+  item = assetManagerItemGet(manager, fileName);
+  if(item == NULL) {
+    item = assetManagerItemAdd(manager, fileName);
+    item->type = ASSET_MANAGER_TYPE_TEXTURE;
+    item->data.texture.fileName = fileName;
+  }
+  assetManagerItemGetOrAddHolder(item, owner);
+  
+  return item;
+}
+
+bool _assetManagerLoaderTextureAsync(assetmanageritem_t *item) {
+  assetbuffer_t *buffer;
+  int channels;
+  stbi_io_callbacks OPENGL_STBI_CALLBACKS;
+
+  buffer = assetBufferOpen(item->data.texture.fileName);
+  if(buffer == NULL) return false;
+
+  // Setup the interface for STBI
+  OPENGL_STBI_CALLBACKS.read = &assetBufferRead;
+  OPENGL_STBI_CALLBACKS.skip = &assetBufferSkip;
+  OPENGL_STBI_CALLBACKS.eof = &assetBufferEnd; 
+
+  // Buffer the image
+  channels = 0;
+  item->data.texture.data = (pixel_t *)stbi_load_from_callbacks(
+    &OPENGL_STBI_CALLBACKS, buffer,
+    &item->data.texture.width, &item->data.texture.height,
+    &channels, STBI_rgb_alpha
+  );
+
+  // Close the buffer
+  assetBufferClose(buffer);
+  if(item->data.texture.data == NULL) return false;
+  return true;
+}
+
+bool _assetManagerLoaderTextureSync(assetmanageritem_t *item) {
+  // Turn into a texture.
+  textureInit(
+    &item->data.texture.texture,
+    item->data.texture.width,
+    item->data.texture.height,
+    item->data.texture.data
+  );
+
+  // Cleanup
+  stbi_image_free(item->data.texture.data);
+  return true;
+}
+
+bool _assetManagerLoaderTextureDispose(assetmanageritem_t *item) {
+  textureDispose(&item->data.texture.texture);
+  return true;
+}

src/file/loaders/texture.h

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "item.h"
+#include "../asset.h"
+
+/**
+ * Queue a texture load onto the asset manager buffer.
+ * 
+ * @param manager Manager to queue on to.
+ * @param owner Owner ID requesting to load this resource.
+ * @param texture Texture to push the result in to.
+ * @param fileName Texture filename to load.
+ * @return A pointer to the asset manager item for tracking.
+ */
+assetmanageritem_t * assetManagerLoadTexture(
+  assetmanager_t *manager, assetmanagerowner_t owner, char *fileName
+);
+
+bool _assetManagerLoaderTextureAsync(assetmanageritem_t *item);
+bool _assetManagerLoaderTextureSync(assetmanageritem_t *item);
+bool _assetManagerLoaderTextureDispose(assetmanageritem_t *item);