1 files changed, 67 insertions, 0 deletions

@@ -0,0 +1,67 @@
+/*
+ * cocos2d for iPhone: http://www.cocos2d-iphone.org
+ *
+ * Copyright (c) 2008, 2009 Jason Booth
+ * 
+ * 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 "CCNode.h"
+#import "CCRibbon.h"
+
+/**
+ * CCMotionStreak manages a Ribbon based on it's motion in absolute space.
+ * You construct it with a fadeTime, minimum segment size, texture path, texture
+ * length and color. The fadeTime controls how long it takes each vertex in
+ * the streak to fade out, the minimum segment size it how many pixels the
+ * streak will move before adding a new ribbon segement, and the texture
+ * length is the how many pixels the texture is stretched across. The texture
+ * is vertically aligned along the streak segemnts. 
+ *
+ * Limitations:
+ *   CCMotionStreak, by default, will use the GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA blending function.
+ *   This blending function might not be the correct one for certain textures.
+ *   But you can change it by using:
+ *     [obj setBlendFunc: (ccBlendfunc) {new_src_blend_func, new_dst_blend_func}];
+ *
+ * @since v0.8.1
+ */
+@interface CCMotionStreak : CCNode <CCTextureProtocol>
+{
+        CCRibbon*       ribbon_;
+        float           segThreshold_;
+        float           width_;
+        CGPoint lastLocation_;
+}
+
+/** Ribbon used by MotionStreak (weak reference) */
+@property (nonatomic,readonly) CCRibbon *ribbon;
+
+/** creates the a MotionStreak. The image will be loaded using the TextureMgr. */
++(id)streakWithFade:(float)fade minSeg:(float)seg image:(NSString*)path width:(float)width length:(float)length color:(ccColor4B)color;
+
+/** initializes a MotionStreak. The file will be loaded using the TextureMgr. */
+-(id)initWithFade:(float)fade minSeg:(float)seg image:(NSString*)path width:(float)width length:(float)length color:(ccColor4B)color;
+
+/** polling function */
+-(void)update:(ccTime)delta;
+
+@end