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我目前正在开发一个基于 3D OpenGLES 的 iPhone 游戏项目，我想要一个检测触摸的视图，这样我就可以根据触摸手势旋转我的相机。

所以在这里我创建了一个从 UIView 派生的 TouchPad 类来记录触摸手势。完成后，我发现只有一半的屏幕有效。整个左侧。每当我触摸屏幕的右侧时，它都不会调用 -[touchesBegan] 方法

这是我的班级定义

@interface TouchPad : UIView
{
CGPoint fingerMove, originalPosition;
}
@property (nonatomic, assign) CGPoint fingerMove;
@end

这是我的课程实现

#import "TouchPad.h"

@implementation TouchPad

@synthesize fingerMove;

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self)
        fingerMove = CGPointMake(0, 0);
    return self;
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    std::cout << "called";
    UITouch *touch = [touches anyObject];
    originalPosition = [touch locationInView:self];
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint currentPosition = [touch locationInView:self];
    fingerMove = CGPointMake(currentPosition.x - originalPosition.x, 
                             currentPosition.y - originalPosition.y);
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;
{
    UITouch *touch = [touches anyObject];
    originalPosition = [touch locationInView:self];
    fingerMove = CGPointMake(0, 0);
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
    fingerMove = CGPointMake(0, 0);
}

@end

这是我在 ViewController 中使用它的方式

- (void)prepareGame
{
    game = [[MainGame alloc] init];
    [self.view addSubview:game.IrrView];
    [game.IrrView release];

    rotationPad = [[TouchPad alloc] initWithFrame:CGRectMake(0.0, 0.0, 
                                [[UIScreen mainScreen] bounds].size.width, 
                                [[UIScreen mainScreen] bounds].size.height)];
    [self.view addSubview:rotationPad];
    [rotationPad release];

}


- (void)runGame
{
    [game updateMapPattern];
    [game updateCamera :rotationPad.fingerMove];
    [game draw];
}

我真的很想知道如何让触摸板在整个屏幕上工作，而不仅仅是屏幕的左侧。可能和我的游戏观有冲突

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0 回答 0