SpriteKit 鼠标移动不工作

Question

我知道之前有人问过这个问题，但我认为答案可能需要更新，因为它目前在 Mac OS 上使用 Xcode 8.3.3 的 SpriteKit 中不起作用。在阅读了这个post 之后，我意识到以前可以在 AppDelegate 中完成的事情现在应该在 ViewController 中完成，但它不起作用。有人对为什么这不起作用有任何建议吗？这是我的各种课程的样子：

ViewController.m

#import "ViewController.h"
#import "GameScene.h"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // Load the SKScene from 'GameScene.sks'
    GameScene *scene = (GameScene *)[SKScene nodeWithFileNamed:@"GameScene"];

    // Set the scale mode to scale to fit the window
    scene.scaleMode = SKSceneScaleModeAspectFill;

    // Present the scene
    [self.skView presentScene:scene];

    self.skView.showsFPS = YES;
    self.skView.showsNodeCount = YES;

    //added in hopes that mouse moved events would be captured
    [self.skView.window setAcceptsMouseMovedEvents:YES];
    [self.skView.window setInitialFirstResponder:self.skView];
}

@end

GameScene.m

#import "GameScene.h"

@implementation GameScene

- (void)didMoveToView:(SKView *)view {

}

-(void) mouseMoved:(NSEvent *)event {
    NSLog(@"blah");
}

-(void)update:(CFTimeInterval)currentTime {
    // Called before each frame is rendered
}

@end

Answer 1

您将第一响应者设置为skView，您需要将其设置为skView.scene，以便鼠标响应您的场景实例，而不是您的视图实例。

第 1 步：将您的窗口代码移动到 viewDidAppear

第 2 步：使用 [self.skView.window makeFirstResponder:self.skView.scene]; 将您的第一响应者更改为场景

之所以需要在viewDidAppear 事件中这样做是因为window for SKView 在viewDidLoad 事件期间是nil。如果您在 Swift 中完成此操作，self.skView.window!.setsAcceptedMouseMovements = true 会失败（Swift 是一种高级语言，我建议您使用它）

#import "ViewController.h"
#import "GameScene.h"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // Load the SKScene from 'GameScene.sks'
    GameScene *scene = (GameScene *)[SKScene nodeWithFileNamed:@"GameScene"];

    // Set the scale mode to scale to fit the window
    scene.scaleMode = SKSceneScaleModeAspectFill;

    // Present the scene
    [self.skView presentScene:scene];

    self.skView.showsFPS = YES;
    self.skView.showsNodeCount = YES;


}
- (void) viewDidAppear {
    //added in hopes that mouse moved events would be captured
    [self.skView.window setAcceptsMouseMovedEvents:YES];
    [self.skView.window setInitialFirstResponder:self.skView];
    [self.skView.window makeFirstResponder:self.skView.scene];
}
@end