Sanyuancap

cocos2dx学习之贪吃蛇移动解决方案 Life is but a span.

移动时需要后方队员追赶前面的队员，保持简单的算法。但存在的问题是队长移动太快时出现错位现象。所以设计出几套解决方案；

    tempHero = _hero->_afterHero;
    while (tempHero != NULL) {//当前非空
        if (tempHero->_myAnimType == tempHero->_preHero->_myAnimType) {//当前和前面的动作一致
            switch (tempHero->_myAnimType) {
           ...
            }
            tempHero->setPosition(ccpAdd(tempHero->getPosition(), Point(speedX,speedY)));
            
        }else{//当前和前面动作不同
            switch (tempHero->_myAnimType) {
                case animType_null:
                    
                    break;
                case animType_right:
                {
                    if (tempHero->getPositionX() < tempHero->_preHero->getPositionX()) {//未超过
                        tempHero->setPosition(ccpAdd(tempHero->getPosition(),Point(_herospeed,0)));
                    }else {//超过
                        if (tempHero->_preHero->_myAnimType == animType_up) {
                            tempHero->setPosition(tempHero->_preHero->getPositionX(),tempHero->_preHero->getPositionY() - 64);
                        }else {
                            tempHero->setPosition(tempHero->_preHero->getPositionX(),tempHero->_preHero->getPositionY() + 64);
                        }
                        
                        tempHero->playAnim(tempHero->_preHero->_myAnimType);
                    }
                }
                    break;
                case animType_left:
                {
                    ...
                }
                case animType_down:
                {
                   ...
                }
                case animType_up:
                {
                    ...
                }
            }
        }
        tempHero = tempHero->_afterHero;
    }
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Published

17 September 2015

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