Adding class guards to +initialize methods.

Author: slembcke

cocos2d/CCDrawNode.m

@@ -56,6 +56,9 @@ @implementation CCDrawNode {
 
 +(void)initialize
 {
+	// +initialize may be called due to loading a subclass.
+	if(self != [CCDrawNode class]) return;
+	
 	SHADER = [[CCShader alloc] initWithFragmentShaderSource:FRAGMENT_SHADER_SOURCE];
 }
 

cocos2d/CCRenderer.m

@@ -170,6 +170,9 @@ -(instancetype)initWithOptions:(NSDictionary *)options
 
 +(void)initialize
 {
+	// +initialize may be called due to loading a subclass.
+	if(self != [CCBlendMode class]) return;
+	
 	CCBLENDMODE_CACHE = [[CCBlendModeCache alloc] init];
 
 	// Add the default modes
@@ -276,6 +279,9 @@ @implementation CCRenderState {
 
 +(void)initialize
 {
+	// +initialize may be called due to loading a subclass.
+	if(self != [CCRenderState class]) return;
+	
 	CCRENDERSTATE_CACHE = [[CCRenderStateCache alloc] init];
 	CCRENDERSTATE_DEBUGCOLOR = [[self alloc] initWithBlendMode:CCBLEND_DISABLED shader:[CCShader positionColorShader] shaderUniforms:@{}];
 }

cocos2d/CCShader.m

@@ -449,6 +449,9 @@ -(instancetype)copyWithZone:(NSZone *)zone
 
 +(void)initialize
 {
+	// +initialize may be called due to loading a subclass.
+	if(self != [CCShader class]) return;
+	
 	CC_SHADER_CACHE = [[CCShaderCache alloc] init];
 
 	// Setup the builtin shaders.

cocos2d/CCTexture.m

@@ -163,6 +163,9 @@ @implementation CCTexture
 
 +(void)initialize
 {
+	// +initialize may be called due to loading a subclass.
+	if(self != [CCTexture class]) return;
+	
 	CCTextureNone = [self alloc];
 	CCTextureNone->_name = 0;
 	CCTextureNone->_format = CCTexturePixelFormat_RGBA8888;

cocos2d/Support/CCColor.m

@@ -237,6 +237,9 @@ - (CCColor*) interpolateTo:(CCColor *) toColor alpha:(float) t
 
 +(void)initialize
 {
+	// +initialize may be called due to loading a subclass.
+	if(self != [CCColor class]) return;
+	
 	BLACK_COLOR = [CCColor colorWithRed:0 green:0 blue:0 alpha:1];
 	DARK_GRAY_COLOR = [CCColor colorWithWhite:1.0/3.0 alpha:1];
 	LIGHT_GRAY_COLOR = [CCColor colorWithWhite:2.0/3.0 alpha:1];