Objective c 在一个无休止的循环中一次添加一个敌人到屏幕上，每个敌人之间都有延迟，但这不起作用

您好，我正在制作一个侧面滚动cocos2d游戏，在这个游戏中，敌人会以一个无休止的循环一次添加到屏幕上。我想知道如何在每个增加的敌人之间设置延迟。另外，当添加“blueknoyer”时，屏幕上会出现第二个，而此时只应添加一个

以下是我目前的代码：

#import "FlyingEnemy.h"

@implementation FlyingEnemy
+(id)createEnemies{
return [[[self alloc]init]autorelease];
}

-(id)init{
if((self = [super init])){
    CGSize size = [[CCDirector sharedDirector]winSize];
    screenWidth = size.width;
    screenHeight = size.height;

    screenBounds = [[UIScreen mainScreen] bounds];

    redEnemyFlameCounter = 1;

    randomNumberSpinningRockRepeat = arc4random() % 4;

    xPoint = screenWidth - 50;
    yPoint = screenHeight - 50;

    yellowEnemyFlameCounter = 1;

    blueEnemyFlameCounter = 1;

    xPointBlueEnemy = screenWidth - 50;
    yPointBlueEnemy = screenHeight - 50;

    [self redEnemyFlight];
}
    return self;
}  

-(void)redEnemyFlight{
[self unschedule:@selector(redEnemyStart:)];

redEnemy = [CCSprite spriteWithFile:@"redenemy.png"];
redEnemy.position = ccp(xPoint, yPoint);
[self addChild:redEnemy z:-1];

[self schedule:@selector(shootTheBullets:)interval:1.0f/2.0f];

CCMoveTo* redEnemyMoveDown  = [CCMoveTo actionWithDuration:3.0 position:ccp(xPoint, 70)];
CCMoveTo* redEnemyMoveUp = [CCMoveTo actionWithDuration:3.0 position:ccp(xPoint, yPoint - 60)];
CCSequence* redEnemyFloatingSequence = [CCSequence actions:redEnemyMoveDown, redEnemyMoveUp, nil];
CCRepeat* redEnemyFloatingRepeat = [CCRepeat actionWithAction:redEnemyFloatingSequence times:3];
[redEnemy runAction:redEnemyFloatingRepeat];

[self schedule: @selector(removeTheEnemy:)interval:18.0f/1.0f];

[self schedule: @selector(redEnemyFlame:)interval:1.0f/5.0f];
}

-(void)redEnemyFlame:(ccTime)delta{
redEnemyFlameCounter ++;

if (redEnemyFlameCounter % 2){
    [redEnemy setTexture:[[CCSprite spriteWithFile:@"redenemy2.png"]texture]];
}else{
    [redEnemy setTexture:[[CCSprite spriteWithFile:@"redenemy.png"]texture]];
}
}

-(void)removeTheEnemy:(ccTime)delta{
CCMoveBy* moveUp = [CCMoveBy actionWithDuration:0.5 position:ccp(70, 100)];
[redEnemy runAction:moveUp];
[self unschedule:@selector(removeTheEnemy:)];

[self schedule:@selector(yellowEnemyStart:)interval:1.0f/60.0f];
}

-(void)yellowEnemyStart:(ccTime)delta{
if (redEnemy.position.x > screenWidth || redEnemy.position.y > screenHeight) {
    [self yellowEnemyFloating];
}
}

-(void)yellowEnemyFloating{
[self unschedule:@selector(yellowEnemyStart:)];

yellowEnemy = [CCSprite spriteWithFile:@"yellowenemy.png"];
yellowEnemy.position = ccp(screenWidth - 50, 50);
[self addChild:yellowEnemy z:-1];

yellowEnemyMoveDown  = [CCMoveTo actionWithDuration:2.0 position:ccp(yellowEnemy.position.x, 50)];
yellowEnemyMoveUp = [CCMoveTo actionWithDuration:2.0 position:ccp(yellowEnemy.position.x, screenHeight/2)];
yellowEnemyFloatingSequnece = [CCSequence actions:yellowEnemyMoveUp, yellowEnemyMoveDown, nil];
yellowEnemyFloatingRepeat = [CCRepeat actionWithAction:yellowEnemyFloatingSequnece times:2];
[yellowEnemy runAction:yellowEnemyFloatingRepeat];

[self schedule: @selector(yellowEnemyFlame:)interval:1.0f/5.0f];
}

-(void)yellowEnemyFlame:(ccTime)delta{
yellowEnemyFlameCounter ++;

if (yellowEnemyFlameCounter % 2){
    [yellowEnemy setTexture:[[CCSprite spriteWithFile:@"yellowenemy2.png"]texture]];
}else{
    [yellowEnemy setTexture:[[CCSprite spriteWithFile:@"yellowenemy.png"]texture]];
}
[self schedule:@selector(yellowEnemyFlight:)interval:8.0f/1.0f];

}

-(void)yellowEnemyFlight:(ccTime)delta{
yellowEnemyMoveLeft = [CCMoveTo actionWithDuration:4.0 position:ccp(-100, screenHeight/2)];
[yellowEnemy runAction:yellowEnemyMoveLeft];

[self schedule:@selector(removeTheYellowEnemy:)interval:4.0f/1.0f];
}

-(void)removeTheYellowEnemy:(ccTime)delta{
CCMoveTo* removeYellowEnemy = [CCMoveTo actionWithDuration:1.0 position:ccp(-100, screenHeight/2)];
[yellowEnemy runAction:removeYellowEnemy];
[self unschedule:@selector(removeTheYellowEnemy:)];

[self schedule:@selector(blueEnemyStart:)interval:1.0f/60.0f];
}

-(void)blueEnemyStart:(ccTime)delta{
if (yellowEnemy.position.x < 0 || yellowEnemy.position.y < 0) {
    if (redEnemy.position.x > screenWidth || redEnemy.position.y > screenHeight) {
        [self blueEnemyFlight];
    }
}
}

-(void)blueEnemyFlight{
[self unschedule:@selector(blueEnemyStart:)];

blueEnemy = [CCSprite spriteWithFile:@"blueenemy.png"];
blueEnemy.position = ccp(xPointBlueEnemy, yPointBlueEnemy);
[self addChild:blueEnemy z:-1];

[self schedule:@selector(shootTheWaterBullets:)interval:1.0f/2.0f];

CCMoveTo* blueEnemyMoveDown  = [CCMoveTo actionWithDuration:3.0 position:ccp(xPointBlueEnemy, 70)];
CCMoveTo* blueEnemyMoveUp = [CCMoveTo actionWithDuration:3.0 position:ccp(xPointBlueEnemy, yPointBlueEnemy - 60)];
CCSequence* blueEnemyFloatingSequence = [CCSequence actions:blueEnemyMoveDown, blueEnemyMoveUp, nil];
CCRepeat* blueEnemyFloatingRepeat = [CCRepeat actionWithAction:blueEnemyFloatingSequence times:3];
[blueEnemy runAction:blueEnemyFloatingRepeat];

[self schedule: @selector(removeTheBlueEnemy:)interval:18.0f/1.0f];

[self schedule: @selector(blueEnemyFlame:)interval:1.0f/5.0f];
}

-(void)blueEnemyFlame:(ccTime)delta{
blueEnemyFlameCounter ++;

if (blueEnemyFlameCounter % 2){
    [blueEnemy setTexture:[[CCSprite spriteWithFile:@"blueenemy2.png"]texture]];
}else{
    [blueEnemy setTexture:[[CCSprite spriteWithFile:@"blueenemy.png"]texture]];
}
}

-(void)removeTheBlueEnemy:(ccTime)delta{
CCMoveBy* moveUpBlueEnemy = [CCMoveBy actionWithDuration:0.5 position:ccp(200, 400)];
[blueEnemy runAction:moveUpBlueEnemy];
[self unschedule:@selector(removeTheBlueEnemy:)];

[self performSelector:@selector(redEnemyStart:)];
}

-(void)redEnemyStart:(ccTime)delta{
if (blueEnemy.position.x > screenWidth || blueEnemy.position.y > screenHeight) {
    [self redEnemyFlight];
}
}
@end

#导入“flyingemy.h”
@实现flyingemy
+（id）创建敌人{
返回[[[self alloc]init]autorelease]；
}
-（id）init{
if（（self=[super init]））{
CGSize size=[[CCDirector sharedDirector]winSize]；
屏幕宽度=size.width；
屏幕高度=size.height；
屏幕边界=[[UIScreen mainScreen]边界]；
redEnemyFlameCounter=1；
randomNumberSpinningRockRepeat=arc4random（）%4；
xPoint=屏幕宽度-50；
yPoint=屏幕高度-50；
黄色火焰计数器=1；
blueEnemyFlameCounter=1；
xpointbluedeny=屏幕宽度-50；
YPOINTBLUENEBY=屏幕高度-50；
[自我复仇之光]；
}
回归自我；
}  
-（无效）重新点火{
[自我计划外：@selector（redEnemyStart:）]；
redEnemy=[CCSprite spriteWithFile:@“redEnemy.png”]；
redEnemy.position=ccp（xPoint，yPoint）；
[self-addChild:redEnemy z:-1]；
[自我计划：@selector（shootthebollets:）间隔：1.0f/2.0f]；
CCMoveTo*redenemmovedown=[CCMoveTo-actionWithDuration:3.0位置：ccp（xPoint，70）]；
CCMoveTo*redEnemyMoveUp=[CCMoveTo-actionWithDuration:3.0位置：ccp（xPoint，yPoint-60）]；
CCSequence*redEnemyFloatingSequence=[CCSequence操作：redEnemyMoveDown、redEnemyMoveUp、nil]；
CCRepeat*redEnemyFloatingRepeat=[CCRepeat actionWithAction:redEnemyFloatingSequence times:3]；
[重新定义运行操作：重新定义浮动重复]；
[自调度：@selector（removeTheEnemy:）间隔：18.0f/1.0f]；
[自调度：@selector（redEnemyFlame:）间隔：1.0f/5.0f]；
}
-（void）redEnemyFlame：（ccTime）delta{
redEnemyFlameCounter++；
如果（重新定义计数器%2）{
[redEnemy setTexture:[[CCSprite spriteWithFile:@“redenemy2.png”]texture]；
}否则{
[redEnemy setTexture:[[CCSprite spriteWithFile:@“redEnemy.png”]texture]；
}
}
-（无效）删除敌人：（ccTime）增量{
CCMoveBy*moveUp=[CCMoveBy action with duration:0.5位置：ccp（70100）]；
[重新定义运行动作：向上移动]；
[自我计划外：@selector（removeTheEnemy:）]；
[自计划：@选择器（YellowEneyStart:）间隔：1.0f/60.0f]；
}
-（无效）YellowEneyStart:（ccTime）delta{
if（redEnemy.position.x>屏幕宽度| | redEnemy.position.y>屏幕高度）{
[自浮]；
}
}
-（无效）黄绿色{
[自我计划外：@selector（yellowEnemyStart:）]；
黄色敌人=[CCSprite spriteWithFile:@“yellowDebuy.png”]；
黄色敌人位置=ccp（屏幕宽度-50,50）；
[self-addChild:z:-1]；
yellowEnemyMoveDown=[CCMoveToActionwithDuration:2.0位置：ccp（yellowEnemy.position.x，50）]；
YellowEneyMoveUp=[CCMoveToActionwithDuration:2.0位置：ccp（yellowEneyTo.position.x，屏幕高度/2）]；
YellowEneyFloatingSequence=[CCSequence actions:YellowEneyMoveUp，YellowEneyMoveDown，nil]；
yellowEnemyFloatingRepeat=[CCRepeat actionWithAction:YellowEneMyFloatingSequence times:2]；
[YellowEneyFloatingRepeat]；
[自我计划：@选择器（yellowEnemyFlame:）间隔：1.0f/5.0f]；
}
-（空白）黄色火焰：（ccTime）三角洲{
yellowEnemyFlameCounter++；
如果（黄色火焰计数器%2）{
[YellowEney2.png]纹理：[[CCSprite spriteWithFile:@“yellowEney2.png”]纹理]；
}否则{
[YellowDebuy设置纹理：[[CCSprite spriteWithFile:@“yellowDebuy.png”]纹理]；
}
[自我计划：@选择器（YellowEneyFlight:）间隔：8.0f/1.0f]；
}
-（无效）yellowEnemyFlight：（ccTime）delta{
YellowEneyMoveLeft=[CCMoveToActionwithDuration:4.0位置：ccp（-100，屏幕高度/2）]；
[YellowEneyMoveLeft]；
[自调度：@选择器（移除黄色敌人：）间隔：4.0f/1.0f]；
}
-（无效）移除黄色敌人：（ccTime）三角洲{
CCMoveTo*移除黄色敌人=[CCMoveTo行动持续时间：1.0位置：ccp（-100，屏幕高度/2）]；
[黄色敌人行动：移除黄色敌人]；
[自我计划外：@selector（移除黄色敌人：）]；
[自调度：@selector（blueEnemyStart:）间隔：1.0f/60.0f]；
}
-（无效）blueEnemyStart:（ccTime）delta{
如果（黄色敌人位置.x<0 | |黄色敌人位置.y<0）{
if（redEnemy.position.x>屏幕宽度| | redEnemy.position.y>屏幕高度）{
[自行飞行]；
}
}
}
-（无效）blueEnemyFlight{
[自我计划外：@selector（blueEnemyStart:）]；
蓝色敌人=[CCSprite spriteWithFile:@“blue敌军.png]”；
blue敌方.position=ccp（xpointblue敌方，ypointblue敌方）；
[self-addChild:Blue敌手z:-1]；
[自调度：@选择器（射击水桶：）间隔：1.0f/2.0f]；
CCMoveTo*bluenemymovedown=[CCMoveTo actionWithDuration:3.0位置：ccp（xpointblueneyforeign，70）]；
CCMoveTo*bluenemymoveup=[CCMoveTo action with duration:3.0位置：ccp（xpointblue敌方，ypointblue敌方-60）]；
CCSequence*blueEnemyFloatingSequence=[CCSequence操作：blueEnemyMoveDown，blueEnemyMoveUp，nil]；
CCRepeat*blueEnemyFloatingRepeat=[CCRepeat actionWithAction:blueEnemyFloatingSequence times:3]；
[蓝敌runAction:blueEnemyFloatingRepeat]；
[自调度：@selector（removetheblueknower:）间隔：18.0f/1.0f]；
[自调度：@选择器（blueEnemyFlame:）间隔：1.0f/5.0f]；
}
-（无效）blueEnemyFlame:（ccTime）delta{
blueEnemyFlameCounter++；
如果（blueEnemyFlameCounter%2）{
[BlueDebuy setTexture:[[CCSprite spriteWithFile:@“blueneMy2.png”]纹理]]；
}否则{
[蓝敌设置纹理：[[CCSprite spriteWithFile:@“blue敌方.png”]纹理]；
}
}
-（无效）移除蓝敌：（ccTime）三角洲{
CCMoveBy*MOVEUPBLUEFOUNY=[CCMoveBy行动持续时间：0.5位置：ccp（200400）]；
[蓝敌行动：向上移动蓝敌]；
[自我计划外：@selector（removetheblueknower:）]；
[自执行选择器：@selector（redEnemyStart:）]；
}
-（无效）重新复仇星：（ccTime）三角洲{
if（blue敌方.position.x>屏幕宽度| | blue敌方.position.y>屏幕高度）{
[自我复仇之光]；
CCDelayTime *delay = [CCDelayTime actionWithDuration:kDelayTime];
CCCallFunc *spawnEnemy = [CCCallFunc actionWithTarget:self selector:@selector(myFoeGeneratorSelector)];
CCRepeatForever *forever = [CCRepeatForever actionWithAction:[CCSequence actionOne:delay two:spawnEnemy]];
[self runAction:forever];

[self runAction:[CCSequence actionOne:delay two:spawnEnemy]];