cocos2dx 泡泡龙游戏开发思路探究

   

   泡泡龙游戏如上图,开发重点有以下几个;

1.建立泡泡矩阵

Bubble* m_board[11][11];  //建立一个面板有11行11列, 依次把泡泡存到响应索引里边去,没有泡泡的就设置NULL
Bubble* m_wait[4];            //保存后边准备的4个泡泡
Bubble* m_curReady;       //准备发射的泡泡

2.发射泡泡

void GameScene::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent){CCPoint pos = pTouch->getLocation();m_real = ccpNormalize(ccpSub(pos, m_curReady->getPosition())); //标准化长度,以设置泡泡飞行速度setDisableEnable();this->scheduleUpdate();}

void GameScene::update(float delta){if (isCollisionWithBorder()){m_real.x = -m_real.x;}CCPoint pos = m_curReady->getPosition();m_curReady->setPosition(ccp(pos.x + m_real.x * BUBBLE_SPEED, pos.y + m_real.y * BUBBLE_SPEED));        //碰到其它泡泡的画就让它定住if (isCollision()){m_real = CCPointZero;adjustBubblePosition();                //查找身边符合条件的泡泡进行清除execClearBubble(m_curReady);        //检查没有连接的泡泡就让它掉落ROWCOL_LIST fallList = checkFallBubble();FallBubble(fallList);        this->unscheduleUpdate(); changeWaitToReady();setEnable();}}

3. 检测是否碰到其他泡泡 

bool GameScene::isCollision(){bool bRet = false;CCSize size = CCDirector::sharedDirector()->getWinSize();if (m_curReady->getPosition().y > size.height - BUBBLE_RADIUS){   bRet = true;           return bRet;}for (BUBBLE_LIST::reverse_iterator iterBubble = m_listBubble.rbegin(); iterBubble != m_listBubble.rend(); ++iterBubble){   Bubble *pBubble = *iterBubble;   if (pBubble && isCollisionWithBubble(pBubble->getPosition(), BUBBLE_RADIUS, m_curReady->getPosition(), BUBBLE_RADIUS))   {      bRet = true;1      return bRet;   }}return bRet;}

判断两圆是否临近

bool GameScene::isCollisionWithBubble(CCPoint pos1, float radius1, CCPoint pos2, float radius2){    //根据两球的面积来判断是否临近,   x和y的相减来得出两圆的距离然后这样求出面积来比较   右边的是正统两圆的面积    return pow(pos1.x - pos2.x, 2) + pow(pos1.y - pos2.y, 2) < pow(radius1 + radius2, 2);//(x1-x2)^2 + (y1-y2)^2 < (r1 + r2)^2}

检查是否有3个同色的泡泡相连并消除.图解如上  

假设中心是发射的泡泡,那么依次检查其他泡泡的顺序为123456, 颜色相同的添加到列表,都检查完后,继续开始从颜色相同列表里的下一个泡泡开始重复上述步骤.

ROWCOL_LIST GameScene::findSameBubble(Bubble *pReadyBubble){ROWCOL_LIST samelist;BUBBLE_COLOR nColor= pReadyBubble->getBubbleColor();int nRow = pReadyBubble->getRowIndex();int nCol = pReadyBubble->getColumnIndex();samelist.push_back(RowCol(nRow, nCol));ROWCOL_LIST::iterator itCur = samelist.begin();do {std::vector<RowCol> vecRowCol;        //以发射的泡泡为中心开始对周围递归检查GetAround(itCur->m_nRow, itCur->m_nCol, vecRowCol);for (size_t i = 0; i < vecRowCol.size(); i++){Bubble* pCurBubble = m_board[ vecRowCol[i].m_nRow ][ vecRowCol[i].m_nCol ];if (pCurBubble && pCurBubble->getBubbleColor() == nColor){RowCol rc(vecRowCol[i].m_nRow, vecRowCol[i].m_nCol);ROWCOL_LIST::iterator itFind = std::find(samelist.begin(), samelist.end(), rc);//如果此点不在相同的相同表里就添加斤if (itFind == samelist.end()){samelist.push_back(vecRowCol[i]);}}}itCur++;} while (itCur != samelist.end());return samelist;}

消除相连的泡泡

void GameScene::clearBubble(const ROWCOL_LIST &bubbleList){int nRow, nCol;for (ROWCOL_LIST::const_iterator iterBubble = bubbleList.begin();iterBubble != bubbleList.end();iterBubble++){nRow = iterBubble->m_nRow;nCol = iterBubble->m_nCol;Bubble *obj = m_board[nRow][nCol];if (obj){removeBubbleAction(obj);m_board[nRow][nCol] = NULL;}BUBBLE_LIST::iterator itFind = std::find(m_listBubble.begin(), m_listBubble.end(), obj);if (itFind != m_listBubble.end()){m_listBubble.erase(itFind);}}}

掉落没有连接的泡泡

ROWCOL_LIST GameScene::checkFallBubble(){ROWCOL_LIST LinkBubbleList;    //把第一行的所有泡泡添加到连接列表里for (int i = 0; i < MAX_COLS; i++){if (m_board[0][i] != NULL){LinkBubbleList.push_back(RowCol(0, i));}}if (LinkBubbleList.empty()){return LinkBubbleList;}//循环开始从第一个泡泡检查周围是否有连接的.ROWCOL_LIST::iterator itCur = LinkBubbleList.begin();do {std::vector<RowCol> vecRowCol;GetAround(itCur->m_nRow, itCur->m_nCol, vecRowCol);for (size_t i = 0; i < vecRowCol.size(); i++){Bubble *pBubble = m_board[ vecRowCol[i].m_nRow ][ vecRowCol[i].m_nCol ];if (pBubble){RowCol pos(vecRowCol[i].m_nRow, vecRowCol[i].m_nCol);ROWCOL_LIST::iterator itFind = std::find(LinkBubbleList.begin(), LinkBubbleList.end(), pos);//≤È’“ «∑Ò“—æ≠‘⁄¡–±Ì÷–if (itFind == LinkBubbleList.end()){LinkBubbleList.push_back(vecRowCol[i]);}}}itCur++;} while (itCur != LinkBubbleList.end());    //从所有泡泡中查出没有连接的泡泡ROWCOL_LIST NoLinkBubblelist;for (int i = 0; i < MAX_ROWS; i++){for (int j = 0; j < MAX_COLS - i % 2; j++){if (m_board[i][j] != NULL){RowCol findRowCol(i,j);ROWCOL_LIST::iterator itFind = std::find(LinkBubbleList.begin(), LinkBubbleList.end(), findRowCol);if (itFind == LinkBubbleList.end()){NoLinkBubblelist.push_back(findRowCol);}}}}return NoLinkBubblelist;}

主要还是算法方面...学习中.