在转换到SpriteKit中的另一个SKScene之后释放SKScene [英] Deallocate SKScene after transition to another SKScene in SpriteKit
本文介绍了在转换到SpriteKit中的另一个SKScene之后释放SKScene的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个视图控制器，有三个skscenes作为孩子。
I have a view controller that has three skscenes as children.
当我从一个过渡到另一个时，旧的skscene不会被释放。
When I transition from one to another, the old skscene doesn't get deallocated.
我希望它被取消分配，好像它从未出现过。
I want it to get deallocated as if it was never there.
示例：
当我第一次加载应用程序时，只有1个skscene可见（比如它占用100mb内存），然后我转换到另一个（100mb以上），然后是第三个（300mb内存）。
When I first load the app, only 1 skscene is visible (say it takes up 100mb memory), then I transition to another (100mb more), and then the third (300mb memory).
我最终会得到300mb内存，而且我希望在任何时候都有100个内存。
I would end up with 300mb memory and I want to have 100 at all times.
我怎样才能实现这个目标？
How can I achieve this?
My view controller:
//
// ViewController.m
// Paddle Jumper
//
// Created by Chance Daniel on 1/18/14.
// Copyright (c) 2014 Max Hudson. All rights reserved.
//
#import "Flurry.h"
#import "ViewController.h"
#import "startViewController.h"
@implementation ViewController{
BOOL sceneSetUp;
}
- (void)viewWillLayoutSubviews
{
if(!sceneSetUp){
[super viewWillLayoutSubviews];
// Configure the view.
SKView * skView = (SKView *)self.view;
//skView.showsFPS = YES;
//skView.showsNodeCount = YES;
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
if([[defaults objectForKey:@"firstTime"] intValue] != 1){
[defaults setObject:[NSNumber numberWithInt:1] forKey:@"firstTime"];
[defaults setObject:@"ggr" forKey:@"skinSelected"];
[defaults setObject:[NSNumber numberWithInt:2] forKey:@"ggrOwned"];
[defaults setObject:[NSNumber numberWithInt:5000] forKey:@"gona"];
[defaults setObject:[NSNumber numberWithInt:1500] forKey:@"points"];
[defaults setObject:[NSNumber numberWithInt:7] forKey:@"livesLeftValue"];
[defaults setObject:[NSNumber numberWithInt:3] forKey:@"shieldsLeftValue"];
[defaults setObject:[NSNumber numberWithInt:2] forKey:@"lvlTwoLeftValue"];
[defaults setObject:[NSNumber numberWithInt:0] forKey:@"lvlThreeLeftValue"];
}
if(![defaults objectForKey:@"tut_game1"]){
[defaults setObject:[NSNumber numberWithInt:1] forKey:@"tut_game1"];
[defaults setObject:[NSNumber numberWithInt:1] forKey:@"tut_store"];
[defaults setObject:[NSNumber numberWithInt:1] forKey:@"tut_daily"];
}
[defaults synchronize];
// Create and configure the scene.
SKScene * startScene = [StartViewController sceneWithSize:skView.bounds.size];
startScene.scaleMode = SKSceneScaleModeAspectFill;
// Present the scene.
[skView presentScene:startScene];
//[skView presentScene:scene];
sceneSetUp = YES;
}
}
-(void) switchScene{
}
- (BOOL)shouldAutorotate
{
return YES;
}
- (NSUInteger)supportedInterfaceOrientations
{
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
return UIInterfaceOrientationMaskAllButUpsideDown;
} else {
return UIInterfaceOrientationMaskAll;
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
@end
An SKScene that won't release: //
// SettingsSKScene.m
// Paddle Jumper
//
// Created by Max Hudson on 3/15/14.
// Copyright (c) 2014 Max Hudson. All rights reserved.
//
#import "SettingsSKScene.h"
#import "gameViewController.h"
#import "StoreScene.h"
@interface SettingsSKScene (){
SKSpriteNode *bg;
SKSpriteNode *masterOverlay;
SKSpriteNode *wbox;
SKSpriteNode *gamecenter;
SKSpriteNode *max;
SKSpriteNode *chance;
SKSpriteNode *bryce;
SKSpriteNode *home;
SKSpriteNode *play;
SKSpriteNode *chance_link;
SKSpriteNode *max_link;
SKSpriteNode *bryce_link;
SKSpriteNode *fbButton;
SKSpriteNode *fbToggleYes;
SKSpriteNode *fbToggleNo;
SKLabelNode *story1;
SKLabelNode *story2;
SKLabelNode *story3;
SKLabelNode *chance_name;
SKLabelNode *max_name;
SKLabelNode *bryce_name;
SKLabelNode *chance_role;
SKLabelNode *max_role;
SKLabelNode *bryce_role;
SKLabelNode *chance_handle;
SKLabelNode *max_handle;
SKLabelNode *bryce_handle;
SKTexture *bg_texture;
SKTexture *gamecenter_texture;
SKTexture *wbox_texture;
SKTexture *max_texture;
SKTexture *chance_texture;
SKTexture *bryce_texture;
SKTexture *home_texture;
SKTexture *play_texture;
SKTexture *fb_texture;
SKTexture *toggle_yes_texture;
SKTexture *toggle_no_texture;
}
@end
@implementation SettingsSKScene
-(id) initWithSize:(CGSize)size{
if(self = [super initWithSize:size]){
masterOverlay = [SKSpriteNode spriteNodeWithColor:[SKColor blackColor] size:self.frame.size];
masterOverlay.position = CGPointMake(self.frame.size.width/2, self.frame.size.height/2);
[self addChild:masterOverlay];
bg_texture = [SKTexture textureWithImageNamed:@"settings_bg"];
wbox_texture = [SKTexture textureWithImageNamed:@"white_rect_bg"];
gamecenter_texture = [SKTexture textureWithImageNamed:@"gc"];
max_texture = [SKTexture textureWithImageNamed:@"max"];
chance_texture = [SKTexture textureWithImageNamed:@"chance"];
bryce_texture = [SKTexture textureWithImageNamed:@"bryce"];
home_texture = [SKTexture textureWithImageNamed:@"home_light"];
play_texture = [SKTexture textureWithImageNamed:@"play_light"];
fb_texture = [SKTexture textureWithImageNamed:@"fb_light"];
toggle_yes_texture = [SKTexture textureWithImageNamed:@"toggle_yes"];
toggle_no_texture = [SKTexture textureWithImageNamed:@"toggle_no"];
NSArray *to_preload = @[bg_texture, wbox_texture, gamecenter_texture, max_texture, chance_texture, bryce_texture, home_texture, play_texture, fb_texture, toggle_yes_texture, toggle_no_texture];
[SKTexture preloadTextures:to_preload withCompletionHandler:^{
[self fadeRemove:masterOverlay];
[self initialize];
}];
}
return self;
}
-(void) fadeRemove: (SKNode *) node{
double duration = arc4random() % 10;
duration *= 0.05;
SKAction *fadeOut = [SKAction fadeOutWithDuration:0.1+duration];
SKAction *remove = [SKAction runBlock:^{
[node removeFromParent];
}];
[node runAction:[SKAction sequence:@[fadeOut, remove]]];
}
-(void) initialize{
bg = [SKSpriteNode spriteNodeWithTexture:bg_texture];
bg.position = CGPointMake(self.frame.size.width/2, self.frame.size.height/2);
bg.zPosition = 0;
wbox = [SKSpriteNode spriteNodeWithTexture:wbox_texture];
wbox.position = CGPointMake(self.frame.size.width/2, 70);
wbox.alpha = 0.8;
wbox.zPosition = 2;
gamecenter = [SKSpriteNode spriteNodeWithTexture:gamecenter_texture];
gamecenter.position = CGPointMake(self.frame.size.width/2 + 100, self.frame.size.height/2-2);
gamecenter.name = @"gc";
gamecenter.zPosition = 2;
fbButton = [SKSpriteNode spriteNodeWithTexture:fb_texture];
fbButton.size = CGSizeMake(36, 36);
fbButton.position = CGPointMake(self.frame.size.width/2 - 115, self.frame.size.height/2-2);
fbButton.name = @"fb";
fbButton.zPosition = 2;
fbToggleNo = [SKSpriteNode spriteNodeWithTexture:toggle_no_texture];
fbToggleNo.position = CGPointMake(self.frame.size.width/2 - 50, self.frame.size.height/2-2);
fbToggleNo.size = CGSizeMake(fbToggleNo.size.width/3, fbToggleNo.size.height/3);
fbToggleNo.name = @"fbno";
fbToggleNo.zPosition = 2;
fbToggleYes = [SKSpriteNode spriteNodeWithTexture:toggle_yes_texture];
fbToggleYes.position = CGPointMake(self.frame.size.width/2 - 70, self.frame.size.height/2-2);
fbToggleYes.name = @"fbyes";
fbToggleYes.zPosition = 2;
int hpBuffer = 40;
int hpZ = 2;
home = [SKSpriteNode spriteNodeWithTexture:home_texture];
home.position = CGPointMake(hpBuffer, self.frame.size.height - hpBuffer);
home.zPosition = hpZ;
home.name = @"home";
play = [SKSpriteNode spriteNodeWithTexture:play_texture];
play.position = CGPointMake(self.frame.size.width - hpBuffer, self.frame.size.height - hpBuffer);
play.zPosition = hpZ;
play.name = @"play";
[self addChild:bg];
[self addChild:wbox];
[self addChild:gamecenter];
[self addChild:home];
[self addChild:play];
[self addChild:fbButton];
[self addChild:fbToggleNo];
[self addCredits];
[self addStory];
}
-(void) addCredits{
/* images */
int cmbZ = wbox.zPosition + 1;
int cmbY = wbox.position.y;
int cmbXUnit = 132;
int cmbX = self.frame.size.width/2 - (3*cmbXUnit)/2 + 20;
int cmbWidth = 40;
chance = [SKSpriteNode spriteNodeWithTexture:chance_texture];
max = [SKSpriteNode spriteNodeWithTexture:max_texture];
bryce = [SKSpriteNode spriteNodeWithTexture:bryce_texture];
chance.zPosition = cmbZ;
max.zPosition = cmbZ;
bryce.zPosition = cmbZ;
chance.position = CGPointMake(cmbX+cmbXUnit*0, cmbY+3);
max.position = CGPointMake(cmbX+cmbXUnit*1 + 10, cmbY);
bryce.position = CGPointMake(cmbX+cmbXUnit*2 + 10, cmbY+5);
chance.size = CGSizeMake(cmbWidth, (chance.size.height/chance.size.width)*cmbWidth);
max.size = CGSizeMake(cmbWidth, (max.size.height/max.size.width)*cmbWidth);
bryce.size = CGSizeMake(cmbWidth, (bryce.size.height/bryce.size.width)*cmbWidth);
[self addChild:chance];
[self addChild:max];
[self addChild:bryce];
/* names */
int cmb_nameXUnit = 30;
int cmb_nameY = wbox.position.y - 10;
int cmb_nameFontSize = 18;
chance_name = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
max_name = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
bryce_name = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
chance_name.text = @"Chance Daniel";
max_name.text = @"Max Hudson";
bryce_name.text = @"Bryce Daniel";
chance_name.fontColor = [SKColor blackColor];
max_name.fontColor = [SKColor blackColor];
bryce_name.fontColor = [SKColor blackColor];
chance_name.horizontalAlignmentMode = SKLabelHorizontalAlignmentModeLeft;
max_name.horizontalAlignmentMode = SKLabelHorizontalAlignmentModeLeft;
bryce_name.horizontalAlignmentMode = SKLabelHorizontalAlignmentModeLeft;
chance_name.position = CGPointMake(chance.position.x + cmb_nameXUnit, cmb_nameY);
max_name.position = CGPointMake(max.position.x + cmb_nameXUnit, cmb_nameY);
bryce_name.position = CGPointMake(bryce.position.x + cmb_nameXUnit, cmb_nameY);
chance_name.fontSize = cmb_nameFontSize;
max_name.fontSize = cmb_nameFontSize;
bryce_name.fontSize = cmb_nameFontSize;
chance_name.zPosition = cmbZ;
max_name.zPosition = cmbZ;
bryce_name.zPosition = cmbZ;
[self addChild:chance_name];
[self addChild:max_name];
[self addChild:bryce_name];
/* roles */
int cmb_roleY = wbox.position.y - 25;
int cmb_roleFontSize = 11;
chance_role = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
max_role = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
bryce_role = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
chance_role.text = @"Programmer";
max_role.text = @"Programmer";
bryce_role.text = @"Graphic Designer";
chance_role.fontColor = [SKColor darkGrayColor];
max_role.fontColor = [SKColor darkGrayColor];
bryce_role.fontColor = [SKColor darkGrayColor];
chance_role.horizontalAlignmentMode = SKLabelHorizontalAlignmentModeLeft;
max_role.horizontalAlignmentMode = SKLabelHorizontalAlignmentModeLeft;
bryce_role.horizontalAlignmentMode = SKLabelHorizontalAlignmentModeLeft;
chance_role.position = CGPointMake(chance.position.x + cmb_nameXUnit + 19, cmb_roleY);
max_role.position = CGPointMake(max.position.x + cmb_nameXUnit + 12, cmb_roleY);
bryce_role.position = CGPointMake(bryce.position.x + cmb_nameXUnit + 6, cmb_roleY);
chance_role.fontSize = cmb_roleFontSize;
max_role.fontSize = cmb_roleFontSize;
bryce_role.fontSize = cmb_roleFontSize;
chance_role.zPosition = cmbZ;
max_role.zPosition = cmbZ;
bryce_role.zPosition = cmbZ;
[self addChild:chance_role];
[self addChild:max_role];
[self addChild:bryce_role];
/* twitter handles */
int cmb_handY = wbox.position.y - 40;
int cmb_handFontSize = 10;
chance_handle = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
max_handle = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
bryce_handle = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
chance_handle.text = @"@ChanceOfThat";
max_handle.text = @"@max_hud";
bryce_handle.text = @"@BryceOfLife";
chance_handle.fontColor = [SKColor darkGrayColor];
max_handle.fontColor = [SKColor darkGrayColor];
bryce_handle.fontColor = [SKColor darkGrayColor];
chance_handle.position = CGPointMake(chance.position.x, cmb_handY);
max_handle.position = CGPointMake(max.position.x, cmb_handY);
bryce_handle.position = CGPointMake(bryce.position.x, cmb_handY);
chance_handle.fontSize = cmb_handFontSize;
max_handle.fontSize = cmb_handFontSize;
bryce_handle.fontSize = cmb_handFontSize;
chance_handle.zPosition = cmbZ;
max_handle.zPosition = cmbZ;
bryce_handle.zPosition = cmbZ;
[self addChild:chance_handle];
[self addChild:max_handle];
[self addChild:bryce_handle];
/* touchzones */
CGSize cmdL_size = CGSizeMake(120, 70);
SKColor *cmdL_color = [SKColor clearColor];
int cmdLZ = 3;
int cmdLX = cmbX + 40;
chance_link = [SKSpriteNode spriteNodeWithColor:cmdL_color size:cmdL_size];
max_link = [SKSpriteNode spriteNodeWithColor:cmdL_color size:cmdL_size];
bryce_link = [SKSpriteNode spriteNodeWithColor:cmdL_color size:cmdL_size];
chance_link.position = CGPointMake(cmdLX+cmbXUnit*0, cmbY);
max_link.position = CGPointMake(cmdLX+cmbXUnit*1 + 10, cmbY);
bryce_link.position = CGPointMake(cmdLX+cmbXUnit*2 + 10, cmbY);
chance_link.zPosition = cmdLZ;
max_link.zPosition = cmdLZ;
bryce_link.zPosition = cmdLZ;
chance_link.name = @"c_handle";
max_link.name = @"m_handle";
bryce_link.name = @"b_handle";
[self addChild:chance_link];
[self addChild:max_link];
[self addChild:bryce_link];
}
-(void) addStory{
int stX = self.frame.size.width/2;
int stZ = 2;
SKColor *stColor = [SKColor whiteColor];
story1 = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
story2 = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
story3 = [SKLabelNode labelNodeWithFontNamed:@"BebasNeue"];
story1.text = @"Gon";
story2.text = @"Help Gon-Gon and his friends get";
story3.text = @"Back to the time they came from!";
story1.fontColor = stColor;
story2.fontColor = stColor;
story3.fontColor = stColor;
story1.zPosition = stZ;
story2.zPosition = stZ;
story3.zPosition = stZ;
story1.position = CGPointMake(stX, self.frame.size.height - 55);
story1.fontSize = 50;
story2.position = CGPointMake(stX, self.frame.size.height - 95);
story2.fontSize = 30;
story3.position = CGPointMake(stX, self.frame.size.height - 120);
story3.fontSize = 20;
[self addChild:story1];
[self addChild:story2];
[self addChild:story3];
}
-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touchUI = [touches anyObject];
CGPoint touchPoint = [touchUI locationInNode:self];
SKNode *touchNode = [self nodeAtPoint:touchPoint];
if([touchNode.name isEqualToString:@"home"]){
StartViewController *svc = [[StartViewController alloc] initWithSize:self.size];
SKTransition *fade = [SKTransition fadeWithColor :[SKColor blackColor] duration:0.4];
[self.view presentScene:svc transition:fade];
}
if([touchNode.name isEqualToString:@"play"]){
gameViewController *gvc = [[gameViewController alloc] initWithSize:self.size];
SKTransition *fade = [SKTransition fadeWithColor :[SKColor blackColor] duration:0.4];
[self.view presentScene:gvc transition:fade];
}
if([touchNode.name isEqualToString:@"gc"]){
NSDictionary * dict = [[NSDictionary alloc]initWithObjectsAndKeys:[NSNumber numberWithBool:1], @"showGC", nil];
[[NSNotificationCenter defaultCenter]postNotificationName:@"kNotificationUpdateBannerView" object:self userInfo:dict];
}
if([touchNode.name isEqualToString:@"c_handle"]){
NSURL *urlApp = [NSURL URLWithString: [NSString stringWithFormat:@"%@", @"twitter:///user?screen_name=ChanceOfThat"]];
int worked = [[UIApplication sharedApplication] openURL:urlApp];
if(!worked){
NSURL *urlApp = [NSURL URLWithString: [NSString stringWithFormat:@"%@", @"https://twitter.com/#!/ChanceOfThat"]];
[[UIApplication sharedApplication] openURL:urlApp];
}
}
if([touchNode.name isEqualToString:@"m_handle"]){
NSURL *urlApp = [NSURL URLWithString: [NSString stringWithFormat:@"%@", @"twitter:///user?screen_name=max_hud"]];
int worked = [[UIApplication sharedApplication] openURL:urlApp];
if(!worked){
NSURL *urlApp = [NSURL URLWithString: [NSString stringWithFormat:@"%@", @"https://twitter.com/#!/max_hud"]];
[[UIApplication sharedApplication] openURL:urlApp];
}
}
if([touchNode.name isEqualToString:@"b_handle"]){
NSURL *urlApp = [NSURL URLWithString: [NSString stringWithFormat:@"%@", @"twitter:///user?screen_name=BryceOfLife"]];
int worked = [[UIApplication sharedApplication] openURL:urlApp];
if(!worked){
NSURL *urlApp = [NSURL URLWithString: [NSString stringWithFormat:@"%@", @"https://twitter.com/#!/BryceOfLife"]];
[[UIApplication sharedApplication] openURL:urlApp];
}
}
}
@end
推荐答案
提出此问题的人面临类似问题问题。
A similar problem was faced by the person who asked this question.
当被问及是否能够解决问题时，他们说：
When asked whether he was able to solve it, they said:
是的，我做了，从场景
或Sprite Kit中没有任何我可以做的事情，我只需要删除场景和
完全从父视图中包含它的视图，将所有
债券切换到系统的其他部分，以便内存也被
解除分配。
Yes, I did, there wasn't anything I could do about it from the scene or Sprite Kit for that matter, I simply needed to remove the scene and the view containing it completely from the parent view, cut all its bonds to the other parts of the system, in order for the memory to be deallocated as well.
您应该为每个场景使用单独的视图，并在这些视图之间进行转换。您可以按照以下步骤使其看起来自然：
You should use separate views for each of your scene and transition between these views. You can follow these steps to make it look natural:
1 - 在您想要从一个场景转换到另一个场景的位置，使用以下场景拍摄场景的快照。以下代码：
1 - At the point you want to transition from one scene to the other, take a snapshot of the scene using the following code:
UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, NO, scale);
[self drawViewHierarchyInRect:self.bounds afterScreenUpdates:YES];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
然后，将此图像添加为当前场景的SKView的子视图，并删除场景。
Then, add this image as a subview of the SKView of the current scene, and remove the scene.
2 - 在另一个视图上初始化新场景，并使用UIView动画在两个视图之间转换。
2 - Initialise the new scene on another view, and transition between the two views using UIView animation.
3 - 从超级视图中删除第一个视图。
3 - Remove the first view from it's superview.
这篇关于在转换到SpriteKit中的另一个SKScene之后释放SKScene的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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