Clean up memory usage of XML loading

src/Debug.c

@@ -451,7 +451,9 @@ void debug_drawUi(GameState *state, f32 dt)
 	i32 debug_bAllocated = state->arena.bytesAllocated;
 	DEBUG_PUSH_VAR("TotalMemoryAllocated: %db", debug_bAllocated, "i32");
 	i32 debug_kbAllocated = state->arena.bytesAllocated / 1024;
+	i32 debug_mbAllocated = debug_kbAllocated / 1024;
 	DEBUG_PUSH_VAR("TotalMemoryAllocated: %dkb", debug_kbAllocated, "i32");
+	DEBUG_PUSH_VAR("TotalMemoryAllocated: %dmb", debug_mbAllocated, "i32");
 	DEBUG_PUSH_STRING("");
 
 	AudioManager *audioManager = &state->audioManager;

src/Entity.c

@@ -19,11 +19,10 @@ void entity_setActiveAnim(Entity *entity, char *animName)
 			if (common_strcmp(anim->key, animName) == 0)
 			{
 				entity->currAnimId = i;
-				EntityAnim *currEntityAnim =
+				EntityAnim *newEntityAnim = &entity->animList[i];
-				    &entity->animList[entity->currAnimId];
+				newEntityAnim->currDuration =
-				currEntityAnim->currDuration =
+				    newEntityAnim->anim->frameDuration;
-				    currEntityAnim->anim->frameDuration;
+				newEntityAnim->currFrame = 0;
-				currEntityAnim->currFrame = 0;
 				return;
 			}
 		}

src/WorldTraveller.c

@@ -188,38 +188,19 @@ INTERNAL void debug_recursivePrintXmlTree(XmlNode *root, i32 levelsDeep)
 	}
 }
 
-INTERNAL void assetInit(GameState *state)
+INTERNAL XmlToken *tokeniseXmlBuffer(MemoryArena *arena, char *buffer,
+                                     i32 bufferSize, int *numTokens)
 {
-	AssetManager *assetManager = &state->assetManager;
-	MemoryArena *arena = &state->arena;
-
-	/* Create empty 1x1 4bpp black texture */
-	u32 bitmap       = (0xFF << 24) | (0xFF << 16) | (0xFF << 8) | (0xFF << 0);
-	Texture emptyTex = texture_gen(1, 1, 4, CAST(u8 *)(&bitmap));
-	assetManager->textures[texlist_empty] = emptyTex;
-
 	/*
 	 **********************
 	 * Tokenise XML Buffer
 	 **********************
 	 */
-	PlatformFileRead xmlFileRead = {0};
-
-	i32 result = platform_readFileToBuffer(
-	    arena, "data/textures/WorldTraveller/ClaudeSprite.xml",
-	    &xmlFileRead);
-
 	XmlToken *xmlTokens = PLATFORM_MEM_ALLOC(arena, 8192, XmlToken);
 	i32 tokenIndex      = 0;
-	if (result)
+	for (i32 i = 0; i < bufferSize; i++)
 	{
-		DEBUG_LOG("Failed to read sprite sheet xml");
+		char c = (CAST(char *) buffer)[i];
-	}
-	else
-	{
-		for (i32 i = 0; i < xmlFileRead.size; i++)
-		{
-			char c = (CAST(char *)xmlFileRead.buffer)[i];
 		switch (c)
 		{
 		case '<':
@@ -255,9 +236,9 @@ INTERNAL void assetInit(GameState *state)
 		case '"':
 		{
 			xmlTokens[tokenIndex].type = xmltokentype_value;
-				for (i32 j = i + 1; j < xmlFileRead.size; j++)
+			for (i32 j = i + 1; j < bufferSize; j++)
 			{
-					char c = (CAST(char *) xmlFileRead.buffer)[j];
+				char c = (CAST(char *) buffer)[j];
 
 				if (c == '"')
 				{
@@ -265,8 +246,8 @@ INTERNAL void assetInit(GameState *state)
 				}
 				else
 				{
-						xmlTokens[tokenIndex]
+					xmlTokens[tokenIndex].string[xmlTokens[tokenIndex].len++] =
-						    .string[xmlTokens[tokenIndex].len++] = c;
+					    c;
 #ifdef DENGINE_DEBUG
 					ASSERT(xmlTokens[tokenIndex].len <
 					       ARRAY_COUNT(xmlTokens[tokenIndex].string));
@@ -285,9 +266,9 @@ INTERNAL void assetInit(GameState *state)
 			if ((c >= 'a' && c <= 'z') || c >= 'A' && c <= 'Z')
 			{
 				xmlTokens[tokenIndex].type = xmltokentype_name;
-					for (i32 j = i; j < xmlFileRead.size; j++)
+				for (i32 j = i; j < bufferSize; j++)
 				{
-						char c = (CAST(char *) xmlFileRead.buffer)[j];
+					char c = (CAST(char *) buffer)[j];
 
 					if (c == ' ' || c == '=' || c == '>' || c == '<' ||
 					    c == '\\')
@@ -311,10 +292,17 @@ INTERNAL void assetInit(GameState *state)
 		}
 		}
 	}
+
+	// TODO(doyle): Dynamic token allocation
+	*numTokens = 8192;
+	return xmlTokens;
 }
 
-	XmlNode root = {0};
+INTERNAL XmlNode *buildXmlTree(MemoryArena *arena, XmlToken *xmlTokens,
-	XmlNode *node = &root;
+                               i32 numTokens)
+{
+	XmlNode *root = PLATFORM_MEM_ALLOC(arena, 1, XmlNode);
+	XmlNode *node = root;
 	node->parent  = node;
 
 	// NOTE(doyle): Used for when closing a node with many children. We
@@ -323,7 +311,7 @@ INTERNAL void assetInit(GameState *state)
 	// token indicates the group is closing- we need to set the last child's
 	// next reference to NULL
 	XmlNode *prevNode = NULL;
-	for (i32 i = 0; i < tokenIndex; i++)
+	for (i32 i = 0; i < numTokens; i++)
 	{
 		XmlToken *token = &xmlTokens[i];
 
@@ -447,11 +435,13 @@ INTERNAL void assetInit(GameState *state)
 		}
 	}
 
-#if 1
+	return root;
-	DEBUG_RECURSIVE_PRINT_XML_TREE(&root);
+}
-#endif
 
-	node = &root;
+INTERNAL void parseXmlTreeToGame(AssetManager *assetManager, MemoryArena *arena,
+                                 XmlNode *root)
+{
+	XmlNode *node = root;
 	while (node)
 	{
 		if (common_strcmp(node->name, "TextureAtlas") == 0)
@@ -470,8 +460,8 @@ INTERNAL void assetInit(GameState *state)
 
 				asset_loadTextureImage(assetManager, imagePath, texlist_claude);
 
-				atlasEntry->key =
+				atlasEntry->key = PLATFORM_MEM_ALLOC(
-				    PLATFORM_MEM_ALLOC(arena, common_strlen(imageName)+1, char);
+				    arena, common_strlen(imageName) + 1, char);
 				common_strncpy(atlasEntry->key, imageName,
 				               common_strlen(imageName));
 
@@ -617,20 +607,105 @@ INTERNAL void assetInit(GameState *state)
 		}
 		node = node->next;
 	}
+}
 
-	/* Load shaders */
+INTERNAL void recursiveFreeXmlTree(MemoryArena *arena, XmlNode *node)
-	asset_loadShaderFiles(assetManager, arena, "data/shaders/sprite.vert.glsl",
+{
-	                      "data/shaders/sprite.frag.glsl",
+	if (!node)
-	                      shaderlist_sprite);
+	{
+		return;
+	} else
+	{
+		// NOTE(doyle): First attribute is statically allocated, only if there's
+		// more attributes do we dynamically allocate
+		XmlAttribute *attrib = node->attribute.next;
 
-	result =
+		while (attrib)
-	    asset_loadTTFont(assetManager, arena, "C:/Windows/Fonts/Arialbd.ttf");
+		{
+			XmlAttribute *next = attrib->next;
 
-#ifdef DENGINE_DEBUG
+			attrib->name  = NULL;
-	if (result) DEBUG_LOG("Font loading failed");
+			attrib->value = NULL;
-	GL_CHECK_ERROR();
+			PLATFORM_MEM_FREE(arena, attrib, sizeof(XmlAttribute));
-	DEBUG_LOG("Assets loaded");
+			attrib = next;
-#endif
+		}
+
+		recursiveFreeXmlTree(arena, node->child);
+		recursiveFreeXmlTree(arena, node->next);
+
+		node->name     = NULL;
+		node->isClosed = FALSE;
+		PLATFORM_MEM_FREE(arena, node, sizeof(XmlNode));
+	}
+}
+
+INTERNAL void freeXmlData(MemoryArena *arena, XmlToken *tokens, i32 numTokens,
+                          XmlNode *tree)
+{
+	if (tree) recursiveFreeXmlTree(arena, tree);
+	if (tokens) PLATFORM_MEM_FREE(arena, tokens, numTokens * sizeof(XmlToken));
+}
+
+INTERNAL void assetInit(GameState *state)
+{
+	AssetManager *assetManager = &state->assetManager;
+	MemoryArena *arena = &state->arena;
+
+	/* Create empty 1x1 4bpp black texture */
+	u32 bitmap       = (0xFF << 24) | (0xFF << 16) | (0xFF << 8) | (0xFF << 0);
+	Texture emptyTex = texture_gen(1, 1, 4, CAST(u8 *)(&bitmap));
+	assetManager->textures[texlist_empty] = emptyTex;
+
+	PlatformFileRead terrainXml = {0};
+	i32 result = platform_readFileToBuffer(
+	    arena, "data/textures/WorldTraveller/terrain.xml", &terrainXml);
+	
+	if (result)
+	{
+		DEBUG_LOG("Failed to read sprite sheet xml");
+	}
+	else
+	{
+		/* Tokenise buffer */
+		i32 numTokens    = 0;
+		XmlToken *xmlTokens = tokeniseXmlBuffer(arena, terrainXml.buffer,
+		                                        terrainXml.size, &numTokens);
+
+		/* Build XML tree from tokens */
+		XmlNode *xmlTree = buildXmlTree(arena, xmlTokens, numTokens);
+
+		/* Parse XML tree to game structures */
+		parseXmlTreeToGame(assetManager, arena, xmlTree);
+
+		/* Free data */
+		freeXmlData(arena, xmlTokens, numTokens, xmlTree);
+		platform_closeFileRead(arena, &terrainXml);
+	}
+
+	PlatformFileRead claudeXml = {0};
+	result = platform_readFileToBuffer(
+	    arena, "data/textures/WorldTraveller/ClaudeSprite.xml", &claudeXml);
+
+	if (result)
+	{
+		DEBUG_LOG("Failed to read sprite sheet xml");
+	}
+	else
+	{
+		/* Tokenise buffer */
+		i32 numTokens    = 0;
+		XmlToken *xmlTokens = tokeniseXmlBuffer(arena, claudeXml.buffer,
+		                                        claudeXml.size, &numTokens);
+
+		/* Build XML tree from tokens */
+		XmlNode *xmlTree = buildXmlTree(arena, xmlTokens, numTokens);
+
+		/* Parse XML tree to game structures */
+		parseXmlTreeToGame(assetManager, arena, xmlTree);
+
+		/* Free data */
+		freeXmlData(arena, xmlTokens, numTokens, xmlTree);
+		platform_closeFileRead(arena, &claudeXml);
 
 		TexAtlas *claudeAtlas =
 		    asset_getTexAtlas(assetManager, "ClaudeSprite.png");
@@ -684,6 +759,21 @@ INTERNAL void assetInit(GameState *state)
 #ifdef DENGINE_DEBUG
 		DEBUG_LOG("Animations created");
 #endif
+	}
+
+	/* Load shaders */
+	asset_loadShaderFiles(assetManager, arena, "data/shaders/sprite.vert.glsl",
+	                      "data/shaders/sprite.frag.glsl",
+	                      shaderlist_sprite);
+
+	result =
+	    asset_loadTTFont(assetManager, arena, "C:/Windows/Fonts/Arialbd.ttf");
+
+#ifdef DENGINE_DEBUG
+	if (result) DEBUG_LOG("Font loading failed");
+	GL_CHECK_ERROR();
+	DEBUG_LOG("Assets loaded");
+#endif
 
 	/* Load sound */
 
@@ -874,7 +964,7 @@ INTERNAL v2 getPosRelativeToRect(Rect rect, v2 offset,
 	return result;
 }
 
-INTERNAL void unitTest()
+INTERNAL void unitTest(MemoryArena *arena)
 {
 	ASSERT(common_atoi("-2", common_strlen("-2")) == -2);
 	ASSERT(common_atoi("100", common_strlen("100")) == 100);
@@ -886,6 +976,29 @@ INTERNAL void unitTest()
 	ASSERT(common_atoi("+32", common_strlen("+32")) == 32);
 	ASSERT(common_atoi("+ 32", common_strlen("+ 32")) == 0);
 
+
+	PlatformFileRead xmlFileRead = {0};
+	i32 result = platform_readFileToBuffer(
+	    arena, "data/textures/WorldTraveller/ClaudeSprite.xml", &xmlFileRead);
+	if (result)
+	{
+		DEBUG_LOG(
+		    "unitTest() error: Could not load XML file for memory free test");
+	}
+	else
+	{
+		/* Tokenise buffer */
+		i32 memBefore = arena->bytesAllocated;
+		i32 numTokens    = 0;
+		XmlToken *xmlTokens = tokeniseXmlBuffer(arena, xmlFileRead.buffer,
+		                                        xmlFileRead.size, &numTokens);
+		/* Build XML tree from tokens */
+		XmlNode *xmlTree = buildXmlTree(arena, xmlTokens, numTokens);
+		freeXmlData(arena, xmlTokens, numTokens, xmlTree);
+		i32 memAfter = arena->bytesAllocated;
+
+		ASSERT(memBefore == memAfter);
+	}
 }
 
 // TODO(doyle): Remove and implement own random generator!
@@ -894,7 +1007,7 @@ INTERNAL void unitTest()
 void worldTraveller_gameInit(GameState *state, v2 windowSize)
 {
 #ifdef DENGINE_DEBUG
-	unitTest();
+	unitTest(&state->arena);
 #endif
 
 	i32 result = audio_init(&state->audioManager);
@@ -1290,11 +1403,12 @@ INTERNAL void beginAttack(EventQueue *eventQueue, World *world,
 	switch (attacker->stats->queuedAttack)
 	{
 	case entityattack_tackle:
+		entity_setActiveAnim(attacker, "claudeAttack");
 		EntityAnim attackAnim = attacker->animList[attacker->currAnimId];
 		f32 busyDuration      = attackAnim.anim->frameDuration *
 		                   CAST(f32) attackAnim.anim->numFrames;
 		attacker->stats->busyDuration = busyDuration;
-		entity_setActiveAnim(attacker, "claudeAttack");
+
 		if (attacker->direction == direction_east)
 			attacker->dPos.x += (1.0f * METERS_TO_PIXEL);
 		else

src/include/Dengine/Assets.h

@@ -32,21 +32,6 @@ enum TerrainRects
 	terrainrects_count,
 };
 
-enum HeroRects
-{
-	herorects_idle,
-	herorects_walkA,
-	herorects_walkB,
-	herorects_head,
-	herorects_waveA,
-	herorects_waveB,
-	herorects_battlePose,
-	herorects_castA,
-	herorects_castB,
-	herorects_castC,
-	herorects_count,
-};
-
 enum AnimList
 {
 	animlist_hero_idle,