Cocos2d-x 3.2 大富翁游戏项目开发-第八部分 角色按路径行走，cocos2d-x项目开发
路径获得之后，我们就可以让角色按照路径行走了，当点击go按钮的时候，我们调用player的startGo()方法，传入的参数就是保存了路径的2个一维数组
void GameBaseScene::goButtonCallback(cocos2d::CCObject *pSender)
{
RouteNavigation::getInstance()->getPath(player1,3,canPassGrid,tiledRowsCount,tiledColsCount);
std::vector<int> colVector = RouteNavigation::getInstance()->getPathCols_vector();
std::vector<int> rowVector = RouteNavigation::getInstance()->getPathRow_vector();
for(int i=0;i<rowVector.size();i++)
{
log(" rowVector row is %d --- colVector col is %d",rowVector[i],colVector[i]);
}
//调用RicherPlayer类的startGo方法
player1->startGo(rowVector,colVector);
}
给类RicherPlayer添加相应的startGo方法
void RicherPlayer::startGo(std::vector<int> rowVector,std::vector<int> colVector)
{
//获取游戏控制器RicherGameController，调用其中的startRealGo（）方法，开始真正的角色行走
RicherGameController* rgController = RicherGameController::create();
addChild(rgController);
rgController->startRealGo(rowVector,colVector,this);
}
void RicherGameController::startRealGo(std::vector<int> rowVector,std::vector<int> colVector,RicherPlayer* richerPlayer)
{
currentRow = rowVector[0]; currentCol = colVector[0]; //获取第一个位置的行列值
nextRow =0; nextCol =0; //下一步的行列值
//创建上下左右的动作，并放入缓存
if(!AnimationCache::getInstance()->animationByName("left_animation"))
{
AnimationCache::getInstance()->addAnimation(Animation::createWithSpriteFrames(richerPlayer->getAnim_left_vector(),playerGoPerFrameTime),"left_animation");
}
if(!AnimationCache::getInstance()->animationByName("right_animation"))
{
AnimationCache::getInstance()->addAnimation(Animation::createWithSpriteFrames(richerPlayer->getAnim_right_vector(),playerGoPerFrameTime),"right_animation");
}
if(!AnimationCache::getInstance()->animationByName("down_animation"))
{
AnimationCache::getInstance()->addAnimation(Animation::createWithSpriteFrames(richerPlayer->getAnim_down_vector(),playerGoPerFrameTime),"down_animation");
}
if(!AnimationCache::getInstance()->animationByName("up_animation"))
{
AnimationCache::getInstance()->addAnimation(Animation::createWithSpriteFrames(richerPlayer->getAnim_up_vector(),playerGoPerFrameTime),"up_animation");
}
//从缓存中取得上下左右的动作，创建相应的动画
left = Animate::create(AnimationCache::getInstance()->animationByName("left_animation"));
right =Animate::create( AnimationCache::getInstance()->animationByName("right_animation"));
down =Animate::create(AnimationCache::getInstance()->animationByName("down_animation"));
up = Animate::create(AnimationCache::getInstance()->animationByName("up_animation"));
//retain 一下，引用计数加一，防止动画被清除
left->retain();
right ->retain();
down->retain();
up->retain();
//根据参数给相应变量赋值
_rowVector=rowVector;
_colVector=colVector;
_richerPlayer =richerPlayer;
stepHasGone = 0;//角色已经走了几步
stepsCount = _rowVector.size()-1;//取得路径需要走的步数，因为第一个是当前位置的行列，所以不计入步数
moveOneStep();//开始行走，先走一步，走完一步后，再走下一步
}
void RicherGameController::moveOneStep()
{
//获取下一步行列，计算同当前行列的差值
nextRow = _rowVector[stepHasGone+1];
nextCol = _colVector[stepHasGone+1];
int distanceRow = nextRow - currentRow;
int distanceCol = nextCol - currentCol;
MoveBy* moveBy; Repeat* repeate; Action* spawnAction;
//根据行列的差值，创建上下左右相应的动作，包括移动和行走的动画
if(distanceRow >0)//up
{
moveBy = MoveBy::create(playerGoTotalTime,ccp(0,tiledHeight));
repeate = Repeat::create(up,1);
}
if(distanceRow <0)//down
{
moveBy = MoveBy::create(playerGoTotalTime,ccp(0,-tiledHeight));
repeate = Repeat::create(down,1);
}
if(distanceCol >0)//right
{
moveBy = MoveBy::create(playerGoTotalTime,ccp(tiledWidth,0));
repeate = Repeat::create(right,1);
}
if(distanceCol <0)//left
{
moveBy = MoveBy::create(playerGoTotalTime,ccp(-tiledWidth,0));
repeate = Repeat::create(left,1);
}
//创建同步动画，当移动完毕，执行callEndGoFunc方法，进而调用endGo（）方法
spawnAction = Sequence::create(Spawn::create(moveBy,repeate,NULL),callEndGoFunc,NULL);
_richerPlayer->runAction(spawnAction);
}
void RicherGameController::endGo()
{
stepHasGone++;//走完一步后，已走步数加1
if(stepHasGone >= stepsCount) //如果已走步数大于等于总步数，返回
{
return;
}
currentRow = nextRow;
currentCol = nextCol;//当前行列赋值为下一行列
moveOneStep();//开始下一步的移动
log("go end");
}
经过测试发现，角色会来回走动，走过去了还走回来，所以我们需要给角色类Player添加 表示角色从哪个位置过来的属性
修改RouteNavigation类的getPath()方法
void RouteNavigation::getPath(RicherPlayer* player,int stepsCount,bool** canPassGrid,int gridRowsCount,int gridColsCount)
{…………………………..
int rowtemp = player->getComeFromeRow();
int coltemp = player->getComeFromCol();
if(rowtemp <=-1 || coltemp <= -1)
{
player->setComeFromCol(currentCol);
player->setComeFromeRow(currentRow);
}
//设置角色从哪里来的位置为false ，以表示不可通过
canPassGrid_copy[player->getComeFromeRow()][player->getComeFromCol()] = false;
………………………..
//获取完路径后，设置角色的来自的位置
player->setComeFromCol(pathCols_vector[pathCols_vector.size()-2]);
player->setComeFromeRow(pathRow_vector[pathRow_vector.size()-2]);
}
测试发现角色终于可以正常走动了
流程图如下
目前为止，代码写的相对较多了，有必要重新整理一下，下部分，我们进行一下代码优化。便于后期的继续开发。
点击下载代码http://download.csdn.net/detail/lideguo1979/8292407
未完待续........................
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