mirror of https://github.com/axmolengine/axmol.git
78 lines
3.2 KiB
C++
78 lines
3.2 KiB
C++
/****************************************************************************
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Copyright (c) 2010-2011 cocos2d-x.org
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Copyright (c) 2008, 2009 Jason Booth
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __CCMOTION_STREAK_H__
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#define __CCMOTION_STREAK_H__
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#include "CCNode.h"
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#include "CCProtocols.h"
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namespace cocos2d {
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class CCRibbon;
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/**
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* @brief CCMotionStreak manages a Ribbon based on it's motion in absolute space.
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* You construct it with a fadeTime, minimum segment size, texture path, texture
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* length and color. The fadeTime controls how long it takes each vertex in
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* the streak to fade out, the minimum segment size it how many pixels the
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* streak will move before adding a new ribbon segement, and the texture
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* length is the how many pixels the texture is stretched across. The texture
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* is vertically aligned along the streak segemnts.
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*
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* Limitations:
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* CCMotionStreak, by default, will use the GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA blending function.
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* This blending function might not be the correct one for certain textures.
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* But you can change it by using:
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* [obj setBlendFunc: (ccBlendfunc) {new_src_blend_func, new_dst_blend_func}];
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*
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* @since v0.8.1
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*/
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class CC_DLL CCMotionStreak : public CCNode, public CCTextureProtocol
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{
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/** Ribbon used by MotionStreak (weak reference) */
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CC_PROPERTY_READONLY(CCRibbon*, m_pRibbon, Ribbon)
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//CCTextureProtocol methods
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CC_PROPERTY(CCTexture2D*, m_pTexture, Texture)
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CC_PROPERTY(ccBlendFunc, m_tBlendFunc, BlendFunc)
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public:
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CCMotionStreak(){}
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virtual ~CCMotionStreak(){}
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/** creates the a MotionStreak. The image will be loaded using the TextureMgr. */
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static CCMotionStreak * streakWithFade(float fade, float seg, const char *imagePath, float width, float length, ccColor4B color);
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/** initializes a MotionStreak. The file will be loaded using the TextureMgr. */
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bool initWithFade(float fade, float seg, const char *imagePath, float width, float length, ccColor4B color);
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/** polling function */
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void update(ccTime delta);
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protected:
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float m_fSegThreshold;
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float m_fWidth;
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CCPoint m_tLastLocation;
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};
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} // namespace cocos2d
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#endif //__CCMOTION_STREAK_H__
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