现状
查看加载,加载backgroundImage
将reticle BOOL
显示为false
-(void)didMoveToView:(SKView *)view {
/* Setup your scene here */
self.anchorPoint = CGPointMake(0.5, 0.5);
self.backgroundColor = [SKColor colorWithRed:0.15 green:0.15 blue:0.3 alpha:1.0];
//Add background
NSString *bundle = [[NSBundle mainBundle] pathForResource:@"backgroundTemp" ofType:@"png"];
UIImage *image = [[UIImage alloc] initWithContentsOfFile:bundle];
SKTexture *texture = [SKTexture textureWithImage:image];
backgroundImage = [SKSpriteNode spriteNodeWithTexture:texture];
backgroundImage.size = CGSizeMake(self.frame.size.width, self.frame.size.height);
backgroundImage.position = CGPointMake(0.5, 0.5);
backgroundImage.zPosition = 0;
[self addChild:backgroundImage];
//END Add Background
removeArray = [[NSMutableArray alloc] init];
reticleShow = false;
}
所以在加载后显示背景图像。唯一的选择是按屏幕以放大backgroundImage
以及加载reticle
图片。
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
/* Called when a touch begins */
if (reticleShow == false) {
//Add Reticle
NSString *bundle = [[NSBundle mainBundle] pathForResource:@"reticle_001" ofType:@"png"];
UIImage *image = [[UIImage alloc] initWithContentsOfFile:bundle];
SKTexture *texture = [SKTexture textureWithImage:image];
SKSpriteNode *reticle = [SKSpriteNode spriteNodeWithTexture:texture];
reticle.zPosition = 1;
reticle.size = CGSizeMake(self.frame.size.width, self.frame.size.height);
reticle.position = CGPointMake(0.5, 0.5);
[self addChild:reticle];
[removeArray addObject:reticle];
//End Add Reticle
//Enlarge background
backgroundImage.size = CGSizeMake(self.frame.size.width*3, self.frame.size.height*3);
//End Enlarge background
reticleShow = true;
} else {
// //Remove reticle
// backgroundImage.size = CGSizeMake(self.frame.size.width, self.frame.size.height);
// [self removeChildrenInArray:removeArray];
// reticleShow = false;
// //end remove reticle
//enable drag
//end enable drag
}
}
现在提供放大,布尔值可防止添加更多精灵,以及提供标线图像。
现在,在此加载之后。或者最初的印刷机已经完成。我现在想要能够拖动背景。即移动背景并保持光罩居中。
所以我做到了,
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
for (UITouch *touch in touches) {
CGPoint location = [touch locationInNode:self];
SKNode *node = [self nodeAtPoint:location];
if ([node.name isEqualToString:backgroundImage]) { <--- ERROR HERE sksprite node to type nsstring
CGPoint previousLocation = [touch previousLocationInNode:self];
float diff = location.y - previousLocation.y;
CGPoint newPosition = CGPointMake(node.position.x, node.position.y +diff);
if (newPosition.y > 230) {
newPosition.y = 230;
}
node.position = newPosition;
}
}
}
三个问题
如何在较小的z-index上拖动图像?即拖动背景而不是光罩?
如何在放大后移动背景图像?
如何通过sknode&amp; nsstring错误? backgroundImage.name = @“backgroundImage”;
答案 0 :(得分:0)
问题一 拖动较小的Z-Index
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
for (UITouch *touch in touches) {
CGPoint location = [touch locationInNode:self];
SKNode *node = [backgroundImage nodeAtPoint:location];
if ([node.name isEqualToString:@"backgroundImage"]) {
CGPoint previousLocation = [touch previousLocationInNode:self];
float ydiff = location.y - previousLocation.y;
float xdiff = location.x - previousLocation.x;
CGPoint newPosition = CGPointMake(node.position.x - xdiff, node.position.y - ydiff);
if (newPosition.y > 230) {
newPosition.y = 230;
}
node.position = newPosition;
}
}
}
插入此内容
reticle.userInteractionEnabled = NO;
问题二
不会通过放大
来影响它问题三
命名SkSpriteNode以进行检测
backgroundImage.name = @"backgroundImage";