我正在使用 GameManager 单例来处理我的游戏所需的一些共享任务。其中一项任务是加载单个游戏场景。游戏启动时，无论我显示的哪个场景/图层组合出现错误；看起来项目相对于定位的坐标可能是错误的。
我选择哪一层并不重要——它们都显示不正确。如果您单击一个按钮并加载另一个场景/图层，然后返回到有问题的场景/图层，一切都会正确显示。这只发生在视网膜显示设备上，所以我认为这可能与我在游戏管理器中为不同显示类型设置的缩放比例有关。但是，更改 Retina 显示器的缩放比例会更糟（图层太小）。
这是我的 AppDelegate.h
#import <UIKit/UIKit.h>
@class RootViewController;
@interface AppDelegate : NSObject <UIApplicationDelegate> {
UIWindow *window;
RootViewController *viewController;
}
@property (nonatomic, retain) UIWindow *window;
@end
应用委托.m
#import "cocos2d.h"
#import "AppDelegate.h"
#import "GameConfig.h"
#import "RootViewController.h"
#import "GameplayScene.h"
#import "GameManager.h"
@implementation AppDelegate
@synthesize window;
- (void) removeStartupFlicker
{
#if GAME_AUTOROTATION == kGameAutorotationUIViewController
#endif
}
- (void) applicationDidFinishLaunching:(UIApplication*)application
{
// Init the window
window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Try to use CADisplayLink director
// if it fails (SDK < 3.1) use the default director
if( ! [CCDirector setDirectorType:kCCDirectorTypeDisplayLink] )
[CCDirector setDirectorType:kCCDirectorTypeDefault];
CCDirector *director = [CCDirector sharedDirector];
// Init the View Controller
viewController = [[RootViewController alloc] initWithNibName:nil bundle:nil];
viewController.wantsFullScreenLayout = YES;
EAGLView *glView = [EAGLView viewWithFrame:[window bounds]
pixelFormat:kEAGLColorFormatRGB565 // kEAGLColorFormatRGBA8
depthFormat:0 // GL_DEPTH_COMPONENT16_OES
];
// attach the openglView to the director
[director setOpenGLView:glView];
[director setDeviceOrientation:kCCDeviceOrientationPortrait];
[director setAnimationInterval:1.0/60];
[director setDisplayFPS:YES];
// make the OpenGLView a child of the view controller
[viewController setView:glView];
// make the View Controller a child of the main window
[window addSubview: viewController.view];
[window makeKeyAndVisible];
[CCTexture2D setDefaultAlphaPixelFormat:kCCTexture2DPixelFormat_RGBA8888];
// Removes the startup flicker
[self removeStartupFlicker];
// Run the intro Scene
//[[CCDirector sharedDirector] runWithScene:[GameplayScene node]];
[[GameManager sharedGameManager] runSceneWithID:kMainMenuScene];
}
- (void)dealloc {
[[CCDirector sharedDirector] end];
[window release];
[super dealloc];
}
游戏管理器.h
#import <Foundation/Foundation.h>
#import "Constants.h"
#import "CommonProtocols.h"
@interface GameManager : NSObject {
BOOL isMusicON;
BOOL isSoundEffectsON;
BOOL hasPlayerDied;
BOOL newHighScore;
BOOL newBestTime;
BOOL isUiTextLeft;
int currentScore;
int highScore;
int lengthPlayed;
int bestTime;
int randomPurple;
int randomGreen;
int timeBonus;
int timeTillDeath;
int uiBackgroundHeight;
CharacterStates previousPurpleState;
CharacterStates previousGreenState;
SceneTypes currentScene;
}
@property (readwrite) BOOL isMusicON;
@property (readwrite) BOOL isSoundEffectsON;
@property (readwrite) BOOL hasPlayerDied;
@property (readwrite) BOOL newHighScore;
@property (readwrite) BOOL newBestTime;
@property (readwrite) BOOL isUiTextLeft;
@property (readwrite) int currentScore;
@property (readwrite) int highScore;
@property (readwrite) int lengthPlayed;
@property (readwrite) int bestTime;
@property (readwrite) int randomPurple;
@property (readwrite) int randomGreen;
@property (readwrite) int uiBackgroundHeight;
@property (readwrite) CharacterStates previousPurpleState;
@property (readwrite) CharacterStates previousGreenState;
@property (readwrite) int timeBonus;
@property (readwrite) int timeTillDeath;
+(GameManager*)sharedGameManager;
-(void)runSceneWithID:(SceneTypes)sceneID;
-(void)openSiteWithLinkType:(LinkTypes)linkTypeToOpen ;
@end
游戏管理器.m
#import "GameManager.h"
#import "GameplayScene.h"
#import "MainMenuScene.h"
#import "OptionsScene.h"
#import "CreditsScene.h"
#import "IntroScene.h"
#import "LevelCompleteScene.h"
@implementation GameManager
static GameManager* _sharedGameManager = nil;
@synthesize isMusicON;
@synthesize isSoundEffectsON;
@synthesize hasPlayerDied;
@synthesize newHighScore;
@synthesize newBestTime;
@synthesize isUiTextLeft;
@synthesize currentScore;
@synthesize highScore;
@synthesize lengthPlayed;
@synthesize bestTime;
@synthesize previousPurpleState;
@synthesize previousGreenState;
@synthesize randomPurple;
@synthesize randomGreen;
@synthesize timeBonus;
@synthesize timeTillDeath;
@synthesize uiBackgroundHeight;
+(GameManager*)sharedGameManager {
@synchronized([GameManager class])
{
if(!_sharedGameManager)
[[self alloc] init];
return _sharedGameManager;
}
return nil;
}
+(id)alloc {
@synchronized([GameManager class]){
NSAssert(_sharedGameManager == nil, @"Attempted to allocate a second instance of the Game Manager singleton");
_sharedGameManager = [super alloc];
return _sharedGameManager;
}
return nil;
}
-(id) init {
self = [super init];
if (self != nil) {
// Game manager initialized
CCLOG(@"Game manager singleton, init");
hasPlayerDied = NO;
// DECODING INFO FROM DEFAULTS
NSArray *dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [dirPaths objectAtIndex:0];
NSMutableData *gameData;
NSKeyedUnarchiver *decoder;
NSString *documentPath = [documentsDirectory stringByAppendingPathComponent:@"gameState.dat"];
gameData = [NSData dataWithContentsOfFile:documentPath];
if (gameData) {
decoder = [[NSKeyedUnarchiver alloc] initForReadingWithData:gameData];
highScore = [decoder decodeIntForKey:@"highScore"];
bestTime = [decoder decodeIntForKey:@"bestTime"];
isMusicON = [decoder decodeBoolForKey:@"isMusicON"];
isSoundEffectsON = [decoder decodeBoolForKey:@"isSoundEffectsON"];
isUiTextLeft = [decoder decodeBoolForKey:@"isUiTextLeft"];
//currentScore = [decoder decodeIntForKey:@"currentScore"];
[decoder release];
} else {
highScore = 0;
bestTime = 0;
isMusicON = TRUE;
isSoundEffectsON = TRUE;
isUiTextLeft = TRUE;
//currentScore = 0;
}
CCLOG(@"Music - %s", isMusicON ? "true" : "false");
CCLOG(@"Sound - %s", isSoundEffectsON ? "true" : "false");
//****************************
currentScore = 0;
timeBonus = 0;
timeTillDeath = 0;
uiBackgroundHeight = 0;
currentScene = kNoSceneUninitialized;
}
return self;
}
-(void)runSceneWithID:(SceneTypes)sceneID {
SceneTypes oldScene = currentScene;
currentScene = sceneID;
id sceneToRun = nil;
switch (sceneID) {
case kMainMenuScene:
sceneToRun = [MainMenuScene node];
break;
case kOptionsScene:
sceneToRun = [OptionsScene node];
break;
case kCreditsScene:
sceneToRun = [CreditsScene node];
break;
case kIntroScene:
sceneToRun = [IntroScene node];
break;
case kLevelCompleteScene:
sceneToRun = [LevelCompleteScene node];
break;
case kGameplayScene:
sceneToRun = [GameplayScene node];
break;
default:
CCLOG(@"Unknown ID, cannot switch scenes");
return;
break;
}
if (sceneToRun == nil) {
// Revert back, since no new scene was found
currentScene = oldScene;
return;
}
// Menu Scenes have a value of < 100
if (sceneID < 100) {
if ([[CCDirector sharedDirector] enableRetinaDisplay:YES]) {
// iPhone 4 Retina
[sceneToRun setScaleX:1.0f];
[sceneToRun setScaleY:1.0f];
CCLOG(@"GM:Scaling for iPhone 4 (retina)");
} else {
[sceneToRun setScaleX:1.0f];
[sceneToRun setScaleY:1.0f];
CCLOG(@"GM:Scaling for iPhone 3G(non-retina)");
}
}
if ([[CCDirector sharedDirector] runningScene] == nil) {
[[CCDirector sharedDirector] runWithScene:sceneToRun];
} else {
[[CCDirector sharedDirector] replaceScene:sceneToRun];
}
}