Adding CCNodeTag to -ext

Author: oxeron

cocos2d-ext/CCNodeTag/CCNodeTag.h

@@ -0,0 +1,50 @@
+/*
+ * cocos2d for iPhone: http://www.cocos2d-iphone.org
+ *
+ * Copyright (c) 2008-2010 Ricardo Quesada
+ * Copyright (c) 2011 Zynga Inc.
+ * Copyright (c) 2013-2014 Cocos2D Authors
+ * Copyright (c) 2013-2014 Cocos2D Authors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#import <Foundation/Foundation.h>
+#import "cocos2d.h"
+
+//----------------------------------------------------------------------
+
+@interface CCNode (CCNodeTag)
+
+//----------------------------------------------------------------------
+
+@property (nonatomic, assign) NSInteger tag;
+
+//----------------------------------------------------------------------
+
+- (void)addChild:(CCNode *)node z:(NSInteger)z tag:(NSInteger)tag;
+- (void)removeChildByTag:(NSInteger)tag;
+- (void)removeChildByTag:(NSInteger)tag cleanup:(BOOL)cleanup;
+- (CCNode *)getChildByTag:(NSInteger)tag;
+- (CCNode *)getChildByTag:(NSInteger)tag recursively:(bool)isRecursive;
+
+//----------------------------------------------------------------------
+
+@end
+

cocos2d-ext/CCNodeTag/CCNodeTag.m

@@ -0,0 +1,131 @@
+/*
+ * cocos2d for iPhone: http://www.cocos2d-iphone.org
+ *
+ * Copyright (c) 2008-2010 Ricardo Quesada
+ * Copyright (c) 2011 Zynga Inc.
+ * Copyright (c) 2013-2014 Cocos2D Authors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#import "CCNodeTag.h"
+#import <objc/runtime.h>
+
+//----------------------------------------------------------------------
+
+static void *nodeTagKey = &nodeTagKey;
+
+//----------------------------------------------------------------------
+
+@implementation CCNode (CCNodeTag)
+
+//----------------------------------------------------------------------
+
+- (void)addChild:(CCNode *)node z:(NSInteger)z tag:(NSInteger)tag
+{
+    node.tag = tag;
+    [self addChild:node z:z];
+}
+
+//----------------------------------------------------------------------
+
+- (void)removeChildByTag:(NSInteger)tag
+{
+    CCNode *node = [self getChildByTag:tag];
+    if (!node)
+        ;
+    else
+        [self removeChild:node];
+}
+
+//----------------------------------------------------------------------
+
+- (void)removeChildByTag:(NSInteger)tag cleanup:(BOOL)cleanup
+{
+    CCNode *node = [self getChildByTag:tag];
+    if (!node)
+        ;
+    else
+        [self removeChild:node cleanup:cleanup];
+}
+
+//----------------------------------------------------------------------
+
+- (CCNode *)getChildByTag:(NSInteger)tag
+{
+    /*
+    for (CCNode *node in self.children)
+    {
+        if (node.tag == tag) return(node);
+    }
+    return(nil);
+     */
+    return [self getChildByTag:tag recursively:NO];
+}
+
+// Recursively get a child by tag, but don't return the root of the search.
+-(CCNode*) getChildByTagRecursive:(NSInteger)tag root:(CCNode *)root
+{
+    if(self != root && self.tag == tag) return self;
+    
+    for (CCNode* node in _children) {
+        CCNode *n = [node getChildByTagRecursive:tag root:root];
+        if(n) return n;
+    }
+    // not found
+    return nil;
+}
+
+- (CCNode *)getChildByTag:(NSInteger)tag recursively:(bool)isRecursive {
+    NSAssert(tag, @"tag is nil.");
+    
+    if(isRecursive){
+        return [self getChildByTagRecursive:tag root:self];
+    } else {
+        for (CCNode* node in _children) {
+            if(node.tag == tag){
+                return node;
+            }
+        }
+    }
+    // not found
+    return nil;
+}
+
+
+//----------------------------------------------------------------------
+// tag property implementation
+
+// OBS!
+// As long as tag hasn't been set, the associated object will be nil, and intergetValue will return 0 (zero), which is well defined behaviour
+
+- (NSInteger)tag
+{
+    NSNumber *number = objc_getAssociatedObject(self, nodeTagKey);
+    return([number integerValue]);
+}
+
+- (void)setTag:(NSInteger)tag
+{
+    objc_setAssociatedObject(self, nodeTagKey, [NSNumber numberWithInteger:tag], OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+//----------------------------------------------------------------------
+
+@end

cocos2d-ext/CCNodeTag/README.md

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+CCNodeTag
+=========
+
+Type of class  : Category to CCNode  
+Uses extension : [None]
+
+Adds tags to CCNode.
+
+While the official replacement for tag in CCNode, is NSString *name, there are rare cases, where tag is useful. To use tags for CCNode, simply include this category into your project.
+
+Usage:
+
+- Add #include "CCNodeTag.h" in your .h or .m file
+- Create a CCNode and add a tag property :
+
+CCNode *node = [[CCNode alloc] init];
+node.tag = 1000;