Question

我有一个敌人节点通过更新其在更新方法中的位置而移动，我在一个设定的时间间隔内添加新节点，当两个相同的节点出现时，最新的节点更新其位置，最后一个节点没有＃39 ; t更新它的位置，当我添加更多时，如何相应地编写我的代码来更新我的敌人节点的所有定位？

敌人方法

-(void)Enemies {

SKTexture *pM1 = [SKTexture textureWithImageNamed:@"enemy-1"];

enemy = [SKSpriteNode spriteNodeWithTexture:pM1];
enemy.zPosition = 8;
enemy.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:enemy.size];
enemy.physicsBody.categoryBitMask = fEnemyCategory;
enemy.physicsBody.contactTestBitMask = fPlatformCategory | fMainPlatformCategory | fPlayerCategory | fPitOfCertainDoomCategory;
enemy.physicsBody.collisionBitMask = fPlatformCategory | fPlayerCategory | fEnemyCategory;
enemy.physicsBody.allowsRotation = NO;
enemy.physicsBody.friction = 0.3;
enemy.physicsBody.linearDamping = 0.7;
enemy.physicsBody.dynamic = YES;
enemy.physicsBody.affectedByGravity = YES;
enemy.physicsBody.usesPreciseCollisionDetection = YES;
enemy.position = CGPointMake(CGRectGetMidX(self.frame) + 30, CGRectGetMidY(self.frame));
enemy.position = CGPointMake(730, enemy.position.y - 129);
NSLog(@"Spawned");

[self addChild:enemy];
[enemy runAction:runAnimation];
}

更新方法

-(void)update:(CFTimeInterval)currentTime {

if (gameStart == YES & gameOver == NO) {

if (enemyExists == YES) {

        if (switchMovement == NO) {
            enemy.position = CGPointMake(enemy.position.x - 3.66, enemy.position.y);
        }
        else if (switchMovement == YES) {
            enemy.position = CGPointMake(enemy.position.x + 2.83, enemy.position.y);
        }

}

Answer 1

这就是你如何实现@ LearnCocos2D所提到的。我没有承诺将对象正确地作为spritenode投射;）

定义数组：

NSMutableArray *array = [NSMutableArray alloc] init];

将敌人添加到阵列：

[array addObject:myObject];  //Directly after [self addChild:enemy];

新更新：

-(void)update:(CFTimeInterval)currentTime {

     if (gameStart == YES & gameOver == NO) 
     {    
           for (NSObject* o in array1)
            {
                 SKSpriteNode enemyTemp = (SKSpriteNode*)o;

                 if (switchMovement == NO) 
                 {
                        enemyTemp.position = CGPointMake(enemyTemp.position.x - 3.66, enemy.position.y);
                  }
                  else if (switchMovement == YES) 
                  {
                        enemyTemp.position = CGPointMake(enemyTemp.position.x + 2.83, enemy.position.y);
                  }
              }
         }

在添加新节点时更新节点的位置？

1 个答案: