void GameLayer::update(float dt)
{
CCSize winSize = CCDirector::sharedDirector()->getWinSize();
CCSprite *playerSprite = (CCSprite *)this->getChildByTag(PlayerTag);
CCPoint currentPos = playerSprite->getPosition();
// update run distance
runDistance += (currentPos.y - prevPos.y);
// stay the player at specified position
if (currentPos.y > kPlayerStayAtScreenPosY) {
CCPoint newPos = ccp(currentPos.x, kPlayerStayAtScreenPosY);
CCPoint diff = ccpSub(newPos, currentPos);
// move the player and map
playerSprite->setPosition(newPos);
// move map nodes
for (int i = 0; i < kGameMapCount; i ++) {
CCNode *mapNode = this->getChildByTag(MapStartTag + i);
CCPoint mapPos = ccpAdd(mapNode->getPosition(), diff);
mapNode->setPosition(mapPos);
// if map get out of scene
if (mapPos.y <= -winSize.height) {
mapPos = ccp(mapPos.x, (kGameMapCount - 1) * winSize.height);
mapNode->setPosition(mapPos);
this->resetMapNode(mapNode);
}
}
// move map barrier node
for (int i = 0; i < kGameMapCount; i ++) {
CCNode *barrierNode = this->getChildByTag(MapBarrierStartTag + i);
CCPoint barrierPos = ccpAdd(barrierNode->getPosition(), diff);
barrierNode->setPosition(barrierPos);
// if map get out of scene
if (barrierPos.y <= -winSize.height) {
barrierPos = ccp(barrierPos.x, (kGameMapCount - 1) * winSize.height);
barrierNode->setPosition(barrierPos);
this->resetBarrierNode(barrierNode, MapBarrierStartTag + i);
}
}
}
// save current pos
prevPos = playerSprite->getPosition();
// collision detection
for (int i = 0; i < kGameMapCount; i ++) {
CCNode *mapNode = this->getChildByTag(MapStartTag + i);
CCSpriteBatchNode *batchNode = (CCSpriteBatchNode *)mapNode->getChildByTag(MapBatchNodeTag);
CCPoint playerPos = batchNode->convertToNodeSpace(this->convertToWorldSpace(playerSprite->getPosition()));
CCRect playerBox = CCRect(-playerSprite->getContentSize().width/2.0f + playerPos.x, -playerSprite->getContentSize().height/2.0f + playerPos.y, playerSprite->getContentSize().width, playerSprite->getContentSize().height);
CCSprite *monsterSprite = (CCSprite *)batchNode->getChildByTag(MapMonsterTag);
if (playerBox.intersectsRect(monsterSprite->boundingBox())) {
// game over
this->gameOver();
}
CCSprite *riverSprite = (CCSprite *)batchNode->getChildByTag(MapRiverTag);
if (playerBox.intersectsRect(riverSprite->boundingBox())) {
// not in jumpping
if (!isJumpping) {
// game over
this->gameOver();
}
}
for (int i = 0; i < kGameCoinCount; i ++) {
CCSprite *coinSprite = (CCSprite *)batchNode->getChildByTag(MapCoinStartTag + i);
if (playerBox.intersectsRect(coinSprite->boundingBox())) {
coinSprite->setVisible(false);
coinCount ++;
}
}
}
for (int i = 0; i < kGameMapCount; i ++) {
CCNode *barrierNode = this->getChildByTag(MapBarrierStartTag + i);
CCSpriteBatchNode *batchNode = (CCSpriteBatchNode *)barrierNode->getChildByTag(MapBatchNodeTag);
CCPoint playerPos = batchNode->convertToNodeSpace(this->convertToWorldSpace(playerSprite->getPosition()));
CCRect playerBox = CCRect(-playerSprite->getContentSize().width/2.0f + playerPos.x, -playerSprite->getContentSize().height/2.0f + playerPos.y, playerSprite->getContentSize().width, playerSprite->getContentSize().height);
CCSprite *barrierSprite = (CCSprite *)batchNode->getChildByTag(MapBarrierTag);
if (playerBox.intersectsRect(barrierSprite->boundingBox())) {
if (!isSliding) {
// game over
this->gameOver();
}
}
}
// update score label
CCLabelTTF *scoreLabel = (CCLabelTTF *)this->getChildByTag(ScoreLabelTag);
int totalScore = runDistance + coinCount;
scoreLabel->setString(CCString::createWithFormat("score: %d", totalScore)->getCString());
}
