我正在制作一种能够发射物体的加农炮。在加农炮的后部连接了活塞。活塞用于设置速度和角度。加农炮可以旋转0-90度,而活塞可以前后移动以调整速度。当我通过触摸旋转加农炮时,它的工作良好。当通过触摸将活塞向后拉并旋转时,意味着活塞超出了加农炮的边界。
如何控制这个问题:我的代码是在触摸移动时控制活塞和加农炮旋转的(para3是加农炮,para6是我的活塞)。
CGPoint touchLocation = [self convertTouchToNodeSpace:touch];
CGPoint oldTouchLocation = [touch previousLocationInView:touch.view];
oldTouchLocation = [[CCDirector sharedDirector] convertToGL:oldTouchLocation];
oldTouchLocation = [self convertToNodeSpace:oldTouchLocation];
if (CGRectContainsPoint(CGRectMake(para6.position.x-para6.contentSize.width/2, para6.position.y-para6.contentSize.height/2, para6.contentSize.width, para6.contentSize.height), touchLocation) && (touchLocation.y-oldTouchLocation.y == 0))
{
CGPoint diff = ccpSub(touchLocation, oldTouchLocation);
CGPoint currentpos = [para6 position];
NSLog(@"%d",currentpos);
CGPoint destination = ccpAdd(currentpos, diff);
if (destination.x < 90 && destination.x >70)
{
[para6 setPosition:destination];
speed = (70 + (90-destination.x))*3.5 ;
}
}
if(CGRectIntersectsRect((CGRectMake(para6.position.x-para6.contentSize.width/8, (para6.position.y+30)-para6.contentSize.height/10, para6.contentSize.width, para6.contentSize.height/10)),(CGRectMake(para3.position.x-para3.contentSize.width/2, para3.position.y-para3.contentSize.height/2, para3.contentSize.width, para3.contentSize.height))))
{
[para3 runAction:[CCSequence actions:
[CCRotateTo actionWithDuration:rotateDuration angle:rotateDiff],
nil]];
CGFloat plungrot = (rotateDiff);
CCRotateTo *rot = [CCRotateTo actionWithDuration:rotateDuration angle:plungrot];
[para6 runAction:rot];
}
}