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上篇介紹了游戲主角的初始化方法,下面我們一次來實現主角的其他方法,首先來看看runAnimation方法,我們使用這個方法來播放主角的動畫:

-(void)runAnimation:(CCAnimation*)animation{
    if (_curAnimation == animation) {
        return;
    }

    _curAnimation = animation;
    if (_curAnimate) {
        [self stopAction:_curAnimate];
    }

    _curAnimate = [CCActionRepeatForever actionWithAction:
                   [CCActionAnimate actionWithAnimation:animation]];
    [self runAction:_curAnimate];
}

代碼首先檢查將要播放的動畫是否和當前正在播放的動畫相同,如果相同則直接退出.然後如果當前正在播放動畫動作,則將其停止.

接下來為需要播放的動畫創建一個永久循環的動作,然後運行該動作.

vcfF9snPudbO77nStfS1xLavu63SssrHyOe0yy48L3A+DQo8cD7W973HwODW0Lu509DSu7j21tjSqrXEt723qCzTprjDu7mw/MCouMPTzs+31tDL+dPQudbO77a80OjSqtXiw7TSu7j2t723qCy+zcrHQSq1xNLGtq/L47eoLrK7yuzPpEEqy+O3qLXE0KG777Dpv8nS1LW9ztK3rdLrus3UrbS0tcRBKs+1wdCyqc7E1tC528nNOjwvcD4NCjxwPtSttLQ6yOe6ztTaQ29jb3MyRNPOz7fW0Mq1z9ZBKtGwwrfL47eoKNK7KTxiciAvPg0Kt63S6zpBKtGwwrfL47eoyOvDxSjSuyk8L3A+DQo8cD64w7e9t6i+zcrHbW92ZVRvd2FyZEJ5QVN0YXK3vbeoOjwvcD4NCjxwcmUgY2xhc3M9"brush:java;"> //使用A*尋路算法移動至目標坐標 -(void)moveTowardByAStar:(CGPoint)targetLocation{ if (_currentStepAction) { _pendingMove = [NSValue valueWithCGPoint:targetLocation]; return; } CGPoint fromTileCoord = [_mainScene tileCoordForPosition:self.position]; CGPoint toTileCoord = [_mainScene tileCoordForPosition:targetLocation]; if (CGPointEqualToPoint(fromTileCoord, toTileCoord)) { return; } if (![_mainScene isWalkableTile:toTileCoord forRole:self]) { return; } _spOpenSteps = [NSMutableArray array]; _spClosedSteps = [NSMutableArray array]; _shortestPath = nil; [StarA insertStep:[[ShortestPathStep alloc] initWithPosition:fromTileCoord] toOpenList:_spOpenSteps]; do{ ShortestPathStep *currentStep = _spOpenSteps[0]; [_spClosedSteps addObject:currentStep]; [_spOpenSteps removeObjectAtIndex:0]; if (CGPointEqualToPoint(currentStep.position, toTileCoord)) { //如果已經找到最短路徑則完成該最短路徑的移動動作 [self constructPathAndStartAnimationFromStep:currentStep]; _spOpenSteps = nil; _spClosedSteps = nil; break; } NSArray *adjSteps = [_mainScene walkableAdjacentTilesCoordDiagonallyForTileCoord: currentStep.position forRole:self]; for (NSValue *v in adjSteps) { ShortestPathStep *step = [[ShortestPathStep alloc]initWithPosition:[v CGPointValue]]; if ([_spClosedSteps containsObject:step]) { continue; } int moveCost = [StarA costToMoveDiagonallyFromStep:currentStep toAdjacentStep:step]; NSUInteger index = [_spOpenSteps indexOfObject:step]; if (index == NSNotFound) { step.parent = currentStep; step.gScore = currentStep.gScore + moveCost; step.hScore = [StarA computeHScoreFromCoord:step.position toCoord:toTileCoord]; [StarA insertStep:step toOpenList:_spOpenSteps]; }else{//已經存在於開放列表 step = _spOpenSteps[index]; if ((currentStep.gScore + moveCost) < step.gScore) { step.gScore = currentStep.gScore + moveCost; step.parent = currentStep; [_spOpenSteps removeObjectAtIndex:index]; [StarA insertStep:step toOpenList:_spOpenSteps]; } } } }while (_spOpenSteps.count > 0); }

其中比較長,這裡就不詳細說明了,大家需要的信息上面2個系列的博文完全涵蓋了.有一點要指出的是,因為我也才開始寫這類代碼,所以一開始對類元素的把握也不是太強,按理說這個方法是所有游戲角色都需要的,所以應該放在它們的父類中.的確是這樣,我在另一個RPG游戲<<熊貓之魂>>中正是這樣做的,我們有機會再敘.