在添加新节点的同时更新节点的位置?
问题描述:
我有一个敌人节点,它通过更新它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的节点,当两个相同的节点出现时,最近的节点更新它的位置并且最后一个节点不更新它的位置,我怎么写相应的代码来更新我的敌人节点的所有位置,当我增加更多?在添加新节点的同时更新节点的位置?
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);
}
}
答
这是你将如何实现@ LearnCocos2D提到什么。我做任何承诺在适当的铸造对象作为spritenode;)
定义数组:
NSMutableArray *array = [NSMutableArray alloc] init];
添加敌人阵:
[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);
}
}
}
你需要使用一个NSMutableArray,现在你有一个名为敌人的单个伊娃,可以持有对一个敌人的引用 – LearnCocos2D 2014-09-03 07:15:19
@ LearnCocos2D可能我问如何实现它一个NSMutableArray?因为这个特殊的敌人会一遍又一遍地产卵,同样的确切的一个,我不是那么熟悉NSMutableArray – Blank 2014-09-03 19:47:29