mirror of https://github.com/axmolengine/axmol.git
107 lines
3.5 KiB
C++
107 lines
3.5 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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#include "CCMotionStreak.h"
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#include "CCPointExtension.h"
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#include "CCRibbon.h"
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namespace cocos2d {
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/*
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* Motion Streak 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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//implementation CCMotionStreak
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CCMotionStreak * CCMotionStreak::streakWithFade(float fade, float seg, const char *imagePath, float width, float length, ccColor4B color)
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{
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CCMotionStreak *pRet = new CCMotionStreak();
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if(pRet && pRet->initWithFade(fade, seg, imagePath, width, length, color))
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{
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pRet->autorelease();
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return pRet;
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}
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CC_SAFE_DELETE(pRet)
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return NULL;
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}
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bool CCMotionStreak::initWithFade(float fade, float seg, const char *imagePath, float width, float length, ccColor4B color)
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{
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m_fSegThreshold = seg;
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m_fWidth = width;
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m_tLastLocation = CCPointZero;
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m_pRibbon = CCRibbon::ribbonWithWidth(m_fWidth, imagePath, length, color, fade);
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this->addChild(m_pRibbon);
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// update ribbon position
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this->schedule(schedule_selector(CCMotionStreak::update), 0);
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return true;
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}
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void CCMotionStreak::update(ccTime delta)
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{
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CCPoint location = this->convertToWorldSpace(CCPointZero);
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m_pRibbon->setPosition(ccp(-1*location.x, -1*location.y));
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float len = ccpLength(ccpSub(m_tLastLocation, location));
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if (len > m_fSegThreshold)
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{
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m_pRibbon->addPointAt(location, m_fWidth);
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m_tLastLocation = location;
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}
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m_pRibbon->update(delta);
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}
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//MotionStreak - CocosNodeTexture protocol
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void CCMotionStreak::setTexture(CCTexture2D* texture)
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{
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m_pRibbon->setTexture(texture);
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}
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CCTexture2D * CCMotionStreak::getTexture()
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{
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return m_pRibbon->getTexture();
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}
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ccBlendFunc CCMotionStreak::getBlendFunc()
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{
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return m_pRibbon->getBlendFunc();
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}
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void CCMotionStreak::setBlendFunc(ccBlendFunc blendFunc)
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{
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m_pRibbon->setBlendFunc(blendFunc);
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}
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CCRibbon * CCMotionStreak::getRibbon()
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{
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return m_pRibbon;
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}
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}// namespace cocos2d
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