i"m new here :)
my first question :
i"m trying to make simple interaction ,- after menuitem is being pressed , i"m starting spritesheet animation of it.
look"s like i can"t straightly animate menuitem with spritesheet (but i think it wou"d be right)
also i can`t do -
menuItem.visible =false:
in function , that is activated by that button
also i can`t reOrder menuitem to z:-10
here is my code:
.h :
CCSprite *p1S2;
CCAction *p1A2;
.m :
#interface FirstPage ()
#property (nonatomic, retain) CCAction *p1A2;
#property (nonatomic, retain) CCSprite *p1S2;
#end
#implementation FirstPage
#synthesize p1S2 = _p1S2;
#synthesize p1A2 = _p1A2;
- (id)init
{
if ((self = [super init]))
{
CGSize screenSize = [[CCDirector sharedDirector] winSize];
bg1 = [CCSprite spriteWithFile:#"st_01_bg1.png"];
bg1.position = ccp(screenSize.width/2, 512);
[self addChild:bg1];
bg2 = [CCSprite spriteWithFile:#"st_01_bg2.png"];
bg2.position = ccp(screenSize.width/2, 128);
[self addChild:bg2 ];
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:
#"button.plist"];
CCSpriteBatchNode *spriteSheet2 = [CCSpriteBatchNode
batchNodeWithFile:#"button.png"];
[self addChild:spriteSheet2 z:6];
NSMutableArray *AnimFrames2 = [NSMutableArray array];
for(int i = 1; i <= 30; ++i) {
[AnimFrames2 addObject:
[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:
[NSString stringWithFormat:#"button%d.png", i]]];
}
CCAnimation *becomeAnim2 = [CCAnimation animationWithFrames:AnimFrames2 delay:0.04f];
self.p1S2 = [CCSprite spriteWithSpriteFrameName:#"rostok1.png"];
_p1S2.position = ccp(638,530);
self.p1A2=[CCSequence actions:[CCRepeat actionWithAction:[CCAnimate actionWithAnimation:becomeAnim2 restoreOriginalFrame:NO]times:200],nil];
[spriteSheet2 addChild:_p1S2 z:6];
[_p1S2 runAction:_p1A2];
_p1S2.visible=false;
CCMenuItem *menuItem1 = [CCMenuItemImage itemFromNormalImage:#"knopka_01_lisik.png"
selectedImage:#"knopka_02_lisik.png" target:self selector:#selector(button1Tapped:)];
CCMenu *Menu = [CCMenu menuWithItems:menuItem1, nil];
Menu.position = ccp(638,530);
[Menu alignItemsHorizontally];
[self addChild:Menu z:7];
}
return self;
}
- (void)button1Tapped:(id)sender {
_p1S2.visible = true;
}
}
#end
any advices on how to do it right ?
What you are doing is using an image for your menu item. You can use different things instead of that image, such as labels, or sprites. Give this a try:
CCMenuItemSprite *sprite1 = [CCMenuItemSprite itemFromNormalSprite:#"Your Sprite.png" selectedSprite:#"YourSelectedSrite.png" target:self selector:#selector(animation)];
You have your default sprite, then when it is selected your selected sprite, then the target (usually self), and then the selector. It is in that selector that you need to put in your animation code, and whatever code you want.
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I have just started developing a game, new to Objective-c. Basically at the moment you can move the spaceship around and the spaceship fires continually and there are asteroids coming from the top of screen. But my app freezes after a minute every time why is this?
CODE
#import "AppDelegate.h"
#pragma mark - HelloWorldLayer
// HelloWorldLayer implementation
#implementation HelloWorldLayer
// Helper class method that creates a Scene with the HelloWorldLayer as the only child.
+(CCScene *) scene
{
// 'scene' is an autorelease object.
CCScene *scene = [CCScene node];
// 'layer' is an autorelease object.
HelloWorldLayer *layer = [HelloWorldLayer node];
// add layer as a child to scene
[scene addChild: layer];
// return the scene
return scene;
}
// on "init" you need to initialize your instance
-(id) init
{
if( (self=[super init]) ) {
self.isTouchEnabled = YES;
moveLeft = NO;
moveRight = NO;
speed = 3;
fireSpeed = 8;
fireArray = [[NSMutableArray alloc] init];
CGSize winSize = [[CCDirector sharedDirector] winSize];
CCSprite *bg = [[CCSprite alloc] initWithFile:#"space_bg.jpg"];
[bg setPosition:ccp(160, 240)];
CGSize imageSize = bg.contentSize;
bg.scaleX = winSize.width / imageSize.width;
bg.scaleY = winSize.height / imageSize.height;
bg.position = ccp(winSize.width/2, winSize.height/2);
[self addChild:bg];
ship = [[CCSprite alloc] initWithFile:#"ship.png"];
[ship setPosition:ccp(100, 100)];
[self addChild:ship];
[self schedule:#selector(fireLoop:)];
NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:1
target:self
selector:#selector(fireCreate)
userInfo:nil
repeats:YES];
int t = arc4random() % 5;
timer3 = [NSTimer scheduledTimerWithTimeInterval:t
target:self
selector:#selector(asteroidTimer)
userInfo:nil
repeats:YES];
}
return self;
}
NSTimer *timer3;
NSTimer *timer2;
NSTimer *tmpTimer;
-(void)asteroidTimer {
int t = arc4random() % 10;
timer2 = [NSTimer scheduledTimerWithTimeInterval:0
target:self
selector:#selector(asteroidCreate)
userInfo:nil
repeats:YES];
}
-(void)asteroidCreate {
[timer2 invalidate];
[tmpTimer invalidate];
CGSize winSize = [[CCDirector sharedDirector] winSize];
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:#"asteroids.plist"];
CCSpriteBatchNode *spriteSheet = [CCSpriteBatchNode batchNodeWithFile:#"asteroids.png"];
NSMutableArray *asteroidAnimFrames = [NSMutableArray array];
for(int i=1; i <= 8; i++) {
[asteroidAnimFrames addObject:[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:#"asteroid%d.png", i]]];
}
CCAnimation *moveAsteroidAnim = [CCAnimation animationWithFrames:asteroidAnimFrames delay:0.1f];
CCSprite *asteroid = [CCSprite spriteWithSpriteFrameName:#"asteroid1.png"];
int x = arc4random() % 320;
int y = arc4random() % 480;
asteroid.position = ccp(x, 480);
CCAction *asteroidAction = [CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:moveAsteroidAnim restoreOriginalFrame:NO]];
int q = arc4random() % 320;
int r = arc4random() % 10;
CCAction *moveAction = [CCMoveTo actionWithDuration:r position:ccp(q, -50)];
[asteroid runAction:moveAction];
[asteroid runAction:asteroidAction];
[spriteSheet addChild:asteroid];
[self addChild:spriteSheet];
int t = arc4random() % 10;
tmpTimer = [NSTimer scheduledTimerWithTimeInterval:t
target:self
selector:#selector(asteroidTimer)
userInfo:nil
repeats:YES];
}
-(void)fireLoop:(ccTime)fl {
if(fireArray.count > 0) {
for(int i = 0; i < fireArray.count; i++){
CCSprite *tmpFire = [fireArray objectAtIndex:i];
if(tmpFire.position.y < 500){
[tmpFire setPosition:ccp([tmpFire position].x, [tmpFire position].y + fireSpeed)];
}else{
[fireArray removeObjectAtIndex:i];
}
}
} else
{
}
}
-(void)fireCreate {
int shootPositionX = [ship position].x;
int shootPositionY = ([ship position].y) + 35;
CCSprite *fire;
fire = [[CCSprite alloc] initWithFile:#"fire.png"];
[fire setPosition:ccp(shootPositionX, shootPositionY)];
[fireArray addObject:fire];
[self addChild:fire];
[fire release];
}
-(void)gameLoop:(ccTime)dt {
int shipPositionX = 41/2;
if([ship position].x > shipPositionX){
[ship setPosition:ccp([ship position].x - speed, [ship position].y)];
}
}
-(void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
for(UITouch *t in touches){
CGPoint point = [self convertTouchToNodeSpace:t];
//if(point.x <= 160){
// moveRight = NO;
// moveLeft = YES;
//}else{
// moveRight =YES;
// moveLeft = NO;
//}
if(allowedToMove)
[ship setPosition:ccp(point.x, point.y + 76)];
}
}
-(void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
for(UITouch *t in touches){
CGPoint point = [self convertTouchToNodeSpace:t];
int shipX = [ship position].x;
int shipY = [ship position].y;
if (CGRectContainsPoint(CGRectMake (shipX - 20.5, shipY - 96, 50, 50), point))
{
allowedToMove = true;
}
}
}
-(void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
for(UITouch *t in touches){
CGPoint point = [self convertTouchToNodeSpace:t];
pointXLeft = point.x;
pointYLeft = point.y;
allowedToMove = false;
}
}
// on "dealloc" you need to release all your retained objects
- (void) dealloc
{
// in case you have something to dealloc, do it in this method
// in this particular example nothing needs to be released.
// cocos2d will automatically release all the children (Label)
// don't forget to call "super dealloc"
[super dealloc];
}
In general track down what seems to be causing it. What does the debugger say? Did you stop the execution or set a breakpoint somewhere that might be problematic? What about exception breakpoints? If those don't work take out your timers and see if you have any change. What about your fire methods?
Also your use of timers look weird and should be the first area you look. Side note, for the asteroids why are you not running the two actions you want to run on the new asteroid using CCSpawn?
In addition are you ever removing projectiles that you shoot from the screen or the asteroids that are no longer needed? If not you should.
But to answer your question the problem looks most likely a timer issue. Your use of timers are wrong. You have timer-3 call asteroid timer, which in turns creates timer-2 that calls asteroid create, which in turns invalidates timer-2 (that had an interval of 0 which makes it look a little unnecessary) and also creates a tmp-timer that calls asteroid create. Timer 3 is left to continuously do what it wants, which is all the steps above, at every x number of seconds. Even though tmp-timer seems to be trying to spawn more asteroid creations and take over the process, instead that looks both incorrect and odd. And you are doing this with a few global timers that can, seemingly have a valid timer but is overridden by a new allocation, just to be invalidated by another method randomly soon after even though what it was trying to invalidate technically was leaked and no longer has a pointer to it, thus invalidating the wrong instance to the wrong timer. Keep in mind your tmp-timer and timer-3 has random intervals. If tmp-timer has an interval of 3 seconds and timer-3 has a 9 second interval at some point something looks like it is bound to go wrong. It is hard to say by glancing at it just how, but it looks inevitable.
Or at least I think that is what is happening. Again the code makes very weird and potentially error prone use of timers.
Also timer-1 is going to keep creating sprites unchecked without those sprites ever going away. Something to think about for sure.
Edit (Solution):
If I understand what you are trying to do you want to create timers every variable amount of seconds that, at the end, creates a new asteroid. There are two things that stand out with this. You want something to call the creation of an asteroid, and something else to do the actual create:
- (void)countDownToCreateNextAsteroid
{
int minTime = 1;
int maxTime = 10;
int randomTime = (arc4random() % (maxTime - minTime)) + minTime;
id countdownDelay = [CCDelayTime actionWithDuration:randomTime];
id creationMethod = [CCCallFunc actionWithTarget:self selector:#selector(createAsteroid)];
id countdownToCreateSeq = [CCSequence actions:countdownDelay, creationMethod, nil];
[self stopAllActions];
[self runAction:countdownToCreateSeq];
}
- (void)createAsteroid
{
CGPoint someStartPosition = ccp(1024.0f, 512.0f);
CCSprite* asteroid = [CCSprite spriteWithFile:#"someImage.png"];
asteroid.position = someStartPosition;
// asterdoid dot yada yada = ....
[self addChild:asteroid];
float someDuration = 10.0f;
CGPoint someOffscreenPos = ccp(-1024.0f, 512.0f);
// Move off screen, then remove yourself...
id asteroidMove = [CCMoveTo actionWithDuration:someDuration
position:someOffscreenPos];
id asteroidRemove = [CCCallBlock actionWithBlock:^
{
[asteroid removeFromParentAndCleanup:YES];
}];
id asteroidSeq = [CCSequence actions:asteroidMove, asteroidRemove, nil];
[asteroid runAction:asteroidSeq];
[self countDownToCreateNextAsteroid];
}
Therefore in your onEnter you could have something to kick it all off and that's it:
- (void)onEnter
{
[super onEnter];
// yada yada
[self countDownToCreateNextAsteroid];
}
And the rest would take care of itself. This assumes this quick and simple approach is all you were after. The count down method sets up the count down, calls a method to create an asteroid at the end of that time, then exits. After the asteroid is created a new call to the count down method is invoked, which will setup another asteroid to be created at another random time. This is one quick and simple way to do what it looks you are were actually trying to accomplish with all those timers.
I don't know why but my animation does not work.
I am trying to add an animated unit now via sprite sheet but through a set of sprites.
And something goes wrong
Here is the code of init method:
#implementation Enemy
-(id) initAt:(CGPoint)pos
{
if([super init])
{
self.position = pos;
CCSprite *start_sprite = [CCSprite spriteWithFile:#"unit1_00000.png"];
start_sprite.position = ccp(0,0);
[self addChild:start_sprite z:2];
const int FRAMES_COUNT = 10;
NSMutableArray* frames = [[NSMutableArray alloc]initWithCapacity:FRAMES_COUNT];
for (int i = 0; i < FRAMES_COUNT; i++)
{
NSString* file = [NSString stringWithFormat:#"unit1_0000%i.png", i];
CCTexture2D* texture = [[CCTextureCache sharedTextureCache] addImage:file];
CGSize texSize = texture.contentSize;
CGRect texRect = CGRectMake(0, 0, texSize.width, texSize.height);
CCSpriteFrame* frame = [CCSpriteFrame frameWithTexture:texture rect:texRect];
[frames addObject:frame];
}
_default_animation = [CCAnimation animationWithSpriteFrames:frames delay:0.1f];
_current_anim_action = [CCAnimate actionWithAnimation:_default_animation];
CCRepeatForever* repeat = [CCRepeatForever actionWithAction:_current_anim_action];
[self runAction:repeat];
}
return self;
}
The error is the following: -[Enemy setDisplayFrame:]: unrecognized selector sent to instance 0x8929bd0
setDisplayFrame is a method of CCSprite class, so in order to run a CCAnimation on Enemy class (which internally calls setDisplayFrame), Enemy must extend CCSprite, not CCNode.
I am trying to create sprite animations for a game where when a user clicks on a button, it will spawn 1 unit/enemy, which will move across the screen in a running animation. At the moment, when I run the game, it will play and once I attempt to spawn a unit, the game crashes and gives me a -[__NSCFConstantString texture]: unrecognized selector sent to instance 0x11a15c error.
This is the header file for the Unit itself:
#import <Foundation/Foundation.h>
#import "cocos2d.h"
#import "mainGameLayer.h"
#class MainGameLayer, Waypoint, Tower;
#interface Unit : CCSprite {
CGPoint myPosition;
int maxHP;
int currentHP;
float walkingSpeed;
Waypoint *destinationWaypoint;
BOOL active;
float centerToBottom;
float centerToSides;
}
#property (nonatomic, assign) MainGameLayer *theGame;
#property (nonatomic, assign) CCSprite *mySprite;
#property (nonatomic, strong) CCAction *walkAction;
+(id) nodeWithTheGame: (MainGameLayer *)_game;
-(id) initWithTheGame: (MainGameLayer *)_game;
-(void) doActivate;
-(void) getRemoved;
#end
Below is the implementation file. The 'self = super initWithSpriteFrame' line is currently throwing a warning saying "Incompatible pointer types sending NSString * to parameter of type 'CCSpriteFrame *'.
Also, the "CCSprite *frame = [[CCSpriterameCache....." line is throwing another warning saying 'Flag 0 results in undefined behaviour with p conversion specifier.
#import "Unit.h"
#import "Tower.h"
#import "Waypoint.h"
#define HEALTH_BAR_WIDTH 20
#define HEALTH_BAR_ORIGIN -10
#implementation Unit
#synthesize mySprite, theGame;
+(id) nodeWithTheGame:(MainGameLayer *)_game
{
return [[self alloc] initWithTheGame:_game];
}
-(id) initWithTheGame:(MainGameLayer *)_game
{
if ((self = [super initWithSpriteFrame:#"hero_walk_00.png"])) {
theGame = _game;
maxHP = 40;
currentHP = maxHP;
active = FALSE;
walkingSpeed = 0.5;
centerToBottom = 39.0;
centerToSides = 29.0;
CCArray *walkFrames = [CCArray arrayWithCapacity: 8];
for (int i = 0; i < 8; i++) {
CCSprite *frame = [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:#"hero_walk_%02.png", i]];
[walkFrames addObject: frame];
}
CCAnimation *walkAnimation = [CCAnimation animationWithSpriteFrames:[walkFrames getNSArray] delay:1.0/12.0];
self.walkAction = [CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:walkAnimation]];
Waypoint *waypoint = (Waypoint *)[theGame.waypoints objectAtIndex:([theGame.waypoints count]-1)];
destinationWaypoint = waypoint.nextWaypoint;
CGPoint pos = waypoint.myPosition;
myPosition = pos;
[mySprite setPosition: pos];
[theGame addChild: self];
[self scheduleUpdate];
}
return self;
}
-(void) doActivate
{
active = TRUE;
}
-(void) update:(ccTime)dt
{
if (!active) {
return;
}
if ([theGame circle:myPosition withRadius:1 collisionWithCircle:destinationWaypoint.myPosition collisionCircleRadius:1]) {
if (destinationWaypoint.nextWaypoint) {
destinationWaypoint = destinationWaypoint.nextWaypoint;
} else {
[theGame getHpDamage];
[self getRemoved];
}
}
CGPoint targetPoint = destinationWaypoint.myPosition;
float movementSpeed = walkingSpeed;
CGPoint normalized = ccpNormalize(ccp(targetPoint.x - myPosition.x, targetPoint.y - myPosition.y));
mySprite.rotation = CC_RADIANS_TO_DEGREES(atan2(normalized.y, -normalized.x));
myPosition = ccp(myPosition.x + normalized.x * movementSpeed, myPosition.y + normalized.y * movementSpeed);
[mySprite setPosition: myPosition];
}
-(void) getRemoved
{
[self.parent removeChild:self cleanup:YES];
[theGame.units removeObject: self];
// Notify the game that we killed an enemy so we can check if we can send another wave
[theGame enemyGotKilled];
}
-(void) draw
{
ccDrawSolidRect(ccp(myPosition.x + HEALTH_BAR_ORIGIN, myPosition.y + 16), ccp(myPosition.x + HEALTH_BAR_ORIGIN + HEALTH_BAR_WIDTH, myPosition.y + 14), ccc4f(1.0, 0, 0, 1.0));
ccDrawSolidRect(ccp(myPosition.x + HEALTH_BAR_ORIGIN, myPosition.y + 16), ccp(myPosition.x + HEALTH_BAR_ORIGIN + (float)(currentHP * HEALTH_BAR_WIDTH)/maxHP, myPosition.y + 14), ccc4f(0, 1.0, 0, 1.0));
}
#end
Here is the header file of the main game layer:
#import <Foundation/Foundation.h>
#import "cocos2d.h"
#interface MainGameLayer : CCLayer {
CCSpriteBatchNode *_actors;
}
+ (CCScene *) scene;
- (BOOL) circle:(CGPoint)circlePoint withRadius:(float)radius collisionWithCircle:(CGPoint)circlePointTwo collisionCircleRadius:(float)radiusTwo;
void ccFillPoly (CGPoint *poli, int points, BOOL closePolygon);
- (void) enemyGotKilled;
- (void) getHpDamage;
#property (nonatomic, strong) NSMutableArray *towers;
#property (nonatomic, strong) NSMutableArray *waypoints;
#property (nonatomic, strong) NSMutableArray *units;
#end
And the implementation file:
#import "MainGameLayer.h"
#import "Tower.h"
#import "Waypoint.h"
#import "Unit.h"
#implementation MainGameLayer
#synthesize towers;
#synthesize waypoints;
#synthesize units;
+ (CCScene *) scene
{
CCScene *scene = [CCScene node];
MainGameLayer *layer = [MainGameLayer node];
[scene addChild: layer];
return scene;
}
- (id) init
{
if ((self = [super init])) {
// Initialize
self.isTouchEnabled = TRUE;
CGSize winSize = [CCDirector sharedDirector].winSize;
// Setting the background (Map)
CCSprite *background = [CCSprite spriteWithFile:#"layout.png"];
[self addChild: background];
[background setPosition: ccp(winSize.width/2, winSize.height/2)];
[self addWaypoints];
// In Game Buttons / Menu
CCMenuItem *sampleButton = [CCMenuItemImage itemWithNormalImage:#"sample.jpg" selectedImage:#"sample.jpg" target:self selector:#selector(samplePurchased:)];
CCMenu *PurchaseUI = [CCMenu menuWithItems:sampleButton, nil];
[PurchaseUI setScale:0.5];
[PurchaseUI setPosition:ccp(63, 51)];
[PurchaseUI alignItemsHorizontally];
PurchaseUI.isTouchEnabled = TRUE;
[self addChild: PurchaseUI];
// Set up the sprite sheets (Currently in testing)
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:#"pd_sprites.plist"];
_actors = [CCSpriteBatchNode batchNodeWithFile:#"pd_sprites.pvr.ccz"];
[_actors.texture setAliasTexParameters];
[self addChild: _actors];
}
return self;
}
-(BOOL) canBuyTower
{
return YES;
}
-(void) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
for (UITouch *touch in touches) {
CGPoint location = [touch locationInView: [touch view]];
location = [[CCDirector sharedDirector] convertToGL: location];
CCLOG(#"X: %f Y: %f", location.x, location.y);
if ([self canBuyTower]) {
// Spend the gold later
Tower *tower = [Tower nodeWithTheGame:self location: location];
[towers addObject: tower];
}
}
}
-(void) addWaypoints
{
waypoints = [[NSMutableArray alloc] init];
Waypoint * waypoint1 = [Waypoint nodeWithTheGame:self location:ccp(-25,360)];
[waypoints addObject:waypoint1];
Waypoint * waypoint2 = [Waypoint nodeWithTheGame:self location:ccp(73,360)];
[waypoints addObject:waypoint2];
waypoint2.nextWaypoint =waypoint1;
Waypoint * waypoint3 = [Waypoint nodeWithTheGame:self location:ccp(467,360)];
[waypoints addObject:waypoint3];
waypoint3.nextWaypoint =waypoint2;
Waypoint * waypoint4 = [Waypoint nodeWithTheGame:self location:ccp(905,360)];
[waypoints addObject:waypoint4];
waypoint4.nextWaypoint =waypoint3;
Waypoint * waypoint5 = [Waypoint nodeWithTheGame:self location:ccp(1050,360)];
[waypoints addObject:waypoint5];
waypoint5.nextWaypoint =waypoint4;
}
-(BOOL) circle:(CGPoint)circlePoint withRadius:(float)radius collisionWithCircle:(CGPoint)circlePointTwo collisionCircleRadius:(float)radiusTwo
{
float xdif = circlePoint.x - circlePointTwo.x;
float ydif = circlePoint.y - circlePointTwo.y;
float distance = sqrt(xdif*xdif + ydif*ydif);
if (distance <= radius + radiusTwo) {
return TRUE;
}
return FALSE;
}
-(void) samplePurchased: (id)sender
{
Unit *tempUnit = [Unit nodeWithTheGame: self];
[units addObject: tempUnit];
[tempUnit doActivate];
}
#end
I'm basically just working off some of the tutorials on the Ray Wenderlich website; I haven't run into any of these errors before and haven't been able to find much help on Google. Any help here is much appreciated! Thank you in advance!
EDIT: After making the changes I am now getting an invisible sprite move across the screen. The sprite's health bar will appear and move across the screen but not the actual sprite / animation itself. Any reasons for this?
[super initWithSpriteFrame:#"hero_walk_00.png"]
expects a CCSpriteFrame* as parameter, not a NSString*. This is why you get a compiler warning for this line - don't ignore compiler warnings!
The fix is simple, use the correct initializer:
[super initWithSpriteFrameName:#"hero_walk_00.png"]
And this returns a CCSpriteFrame* not a CCSprite*:
CCSprite *frame = [[CCSpriteFrameCache sharedSpriteFrameCache]
spriteFrameByName:[NSString stringWithFormat:#"hero_walk_%02.png", i]];
Hence the other warning. The fix:
CCSpriteFrame *frame = ...
So I created a class called Berries that extends CCSpriteBatchNode. The Berries are basically like coins in my game, adding to the score value if 'collided' with. This is the code I have in my Berries class for CCSpriteBatchNode:
- (id) init
{
if((self = [super init]))
{
CCSpriteBatchNode* berryBatch1 = [CCSpriteBatchNode batchNodeWithFile:#"One.png"];
[self addChild:berryBatch1];
CCSpriteBatchNode* berryBatch2 = [CCSpriteBatchNode batchNodeWithFile:#"Two.png"];
[self addChild:berryBatch2];
CCSpriteBatchNode* berryBatch3 = [CCSpriteBatchNode batchNodeWithFile:#"Three.png"];
[self addChild:berryBatch3];
for (int i = 0; i < 100; i++)
{
CCSprite* berry1 = [CCSprite spriteWithFile: #"One.png"];
[berryBatch1 addChild:berry1];
CCSprite* berry2 = [CCSprite spriteWithFile: #"Two.png"];
[berryBatch2 addChild:berry2];
CCSprite* berry3 = [CCSprite spriteWithFile: #"Three.png"];
[berryBatch3 addChild:berry3];
}
numBerries =
}
return self;
}
numBerries is an int that I made. I am trying to figure out the number of berries in all three CCSpriteBatchNodes so that when I make a detectCollision method I can use it in the for loop.
Any ideas?
It's simple:
numBerries = berryBatch1.children.count +
berryBatch2.children.count +
berryBatch3.children.count;
I've got a problem in my cocos2d game: In the Game's level layer I've 3-5 big sprites for background (1920*640 ~100kb each) ~ 400-500kb in each level. When I switch between menu and various game's level 4-5 times the game crashes to main IPhone menu
[[CCDirector sharedDirector] replaceScene:transition];
without this big sprites all work perfect!
-(id) init
{
....
if( (self=[super init])) {
_spriteBGLevel1 = [CCSprite spriteWithFile: [NSString stringWithFormat:#"level_fon_%i_1.png", _currentLevel]];
_spriteBGLevel1.anchorPoint = ccp(0, 0);
_spriteBGLevel1.position = CGPointMake(0.0, 0.0);
[self addChild:_spriteBGLevel1 z:-5];
_spriteBGLevel2 = [CCSprite spriteWithFile: [NSString stringWithFormat:#"level_fon_%i_2.png", _currentLevel]];
_spriteBGLevel2.anchorPoint = ccp(0, 0);
_spriteBGLevel2.position = CGPointMake(0.0, 0.0);
[self addChild:_spriteBGLevel2 z:-5];
_spriteBGLevel3 = [CCSprite spriteWithFile: [NSString stringWithFormat:#"level_fon_%i_3.png", _currentLevel]];
_spriteBGLevel3.anchorPoint = ccp(0, 0);
_spriteBGLevel3.position = CGPointMake(0.0, 0.0);
[self addChild:_spriteBGLevel3 z:-5];
....
- (void) dealloc
{
....
_spriteBGLevel1=nil;
_spriteBGLevel2=nil;
_spriteBGLevel3=nil;
[super dealloc];
}
Background.m
#import "Background.h"
#import "GameConfig.h"
#import "XMLReader.h"
#import "CCParallaxNode-Extras.h"
#import "SettingsManager.h"
#implementation Background
#synthesize backgrounds=_backgrounds;
#synthesize backgroundNode=_backgroundNode;
+(id) scene
{
CCScene *scene = [CCScene node];
Background *layer = [Background node];
[scene addChild: layer];
return scene;
}
-(id) init
{
if ((self = [super init]))
{
CGSize screenSize = [[CCDirector sharedDirector] winSize];
int currentLevel = [[SettingsManager sharedSettingsManager] getCurrentLevel];
_backgroundNode = [CCParallaxNode node];
_backgroundNode.anchorPoint = CGPointMake(0, 0);
_backgroundNode.position = CGPointMake(0, 0);
[self addChild:_backgroundNode z:-1];
NSData *xmlData = [NSData dataWithContentsOfFile:[[NSBundle bundleForClass:[self class]] pathForResource:#"gameScene" ofType:#"xml"]];
NSError *error = nil;
NSDictionary *dictionary = [XMLReader dictionaryForXMLData:xmlData error:&error];
NSDictionary *levelsDict = [dictionary valueForKeyPath:#"levels.level"];
NSDictionary *levelDict;
_backgrounds = [[[NSMutableArray alloc] init] retain];
// [[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile: [NSString stringWithFormat:#"level_fon_%i.plist", currentLevel]];
for (levelDict in levelsDict)
{
int idLevel = [[levelDict valueForKeyPath:#"id"] intValue];
if(idLevel==currentLevel)
{
NSDictionary *fonsDict = [levelDict valueForKeyPath:#"background.fon"];
NSDictionary *fonDict;
for (fonDict in fonsDict){
NSString *name=[fonDict valueForKeyPath:#"name"];
int zIndex=[[fonDict valueForKeyPath:#"z"] intValue];
float ratio=[[fonDict valueForKeyPath:#"ratio"] floatValue];
float offsetx=[[fonDict valueForKeyPath:#"offsetx"] floatValue];
float offsety=[[fonDict valueForKeyPath:#"offsety"] floatValue];
if(zIndex<0)
{
//CCTexture2D* tex = [[CCTextureCache sharedTextureCache] addImage:[NSString stringWithFormat:#"%#", name]];
//CCSprite *fon_level_1 = [CCSprite spriteWithSpriteFrameName: [NSString stringWithFormat:#"%#", name]];
//CCSprite *fon_level_2 = [CCSprite spriteWithSpriteFrameName: [NSString stringWithFormat:#"%#", name]];
//CCSprite *fon_level_1 = [CCSprite spriteWithTexture:tex];
//CCSprite *fon_level_2 = [CCSprite spriteWithTexture:tex];
fon_level_1 = [CCSprite spriteWithFile:[NSString stringWithFormat:#"%#", name]];
fon_level_2 = [CCSprite spriteWithFile:[NSString stringWithFormat:#"%#", name]];
fon_level_1.anchorPoint = CGPointMake(0, 0);
fon_level_1.position = CGPointMake(0, 0);
fon_level_2.anchorPoint = CGPointMake(0, 0);
fon_level_2.position = CGPointMake(0, 0);
//[_backgroundNode addChild:fon_level_1 z:zIndex parallaxRatio:ccp(ratio, ratio) positionOffset:ccp(offsetx, offsety*screenSize.height)];
//[_backgroundNode addChild:fon_level_2 z:zIndex parallaxRatio:ccp(ratio, ratio) positionOffset:ccp(fon_level_1.contentSize.width, offsety*screenSize.height)];
[_backgrounds addObject:fon_level_1];
[_backgrounds addObject:fon_level_2];
fon_level_1=nil;
fon_level_2=nil;
}
}
break;
}
}
NSLog(#"count: %d",_backgrounds.count);
[self scheduleUpdate];
}
return self;
}
- (void)scheduleUpdate
{
[self schedule:#selector(updateBackgroud:)];
}
-(void) updateBackgroud:(ccTime)delta
{
CGPoint backgroundScrollVel = ccp(-1000, 0);
_backgroundNode.position = ccpAdd(_backgroundNode.position, ccpMult(backgroundScrollVel, delta));
for (CCSprite *background in _backgrounds) {
if (([_backgroundNode convertToWorldSpace:background.position].x+background.contentSize.width/10) < -(background.contentSize.width)) {
[_backgroundNode incrementOffset:ccp(background.contentSize.width*2,0) forChild:background];
}
}
}
- (void) dealloc
{
_backgroundNode = nil;
// _backgrounds = nil;
[_backgrounds removeAllChildren];
[_backgrounds release];
[super dealloc];
}
#end
Well, here's how I have gone about it:
Get as close as possible to a POT texture size. 1920x640 costs you as much memory as a 2048x2048. Maybe you could get your artists to combine the three-five sprites on a single 2048x2848 png, crop with an plist (like for animation).
Whenever possible, load textures 'just in time', ie before they are required to be visible. If load time became an issue (perceivable lag at an inappropriate game circumstance), convert the texture to .pvr format (faster load), later to .pvr.gz (still faster load time, smaller app download size). PVR will cause some artefacts, so check with graphic people on your project before comiting.
Coming out of any level transition (either to some kind of menu or to some cut-scene), cleanup memory used by textures. This means that if the game logic requires returning to the main scene, reload textures just-in-time, during the transition.
Last ditch, change the depth setting before loading these large textures (code snippet below). Setting to RGBA444 will save 75% of the memory requirement, BUT, you take a hit on some graphic quality, especially for high saturation images. Once again, if you need to go there, get your graphics people to optimize the images to this depth, so they are satisfied with the result on device.
cleanup:
NSLog(#"GESprite<removeUnusedSprites> : before purging all caches");
[[CCTextureCache sharedTextureCache] dumpCachedTextureInfo];
[[CCSpriteFrameCache sharedSpriteFrameCache] removeUnusedSpriteFrames];
[[CCDirector sharedDirector] purgeCachedData];
NSLog(#"GESprite<removeUnusedSprites> : after purging all caches");
[[CCTextureCache sharedTextureCache] dumpCachedTextureInfo];
depth (in a CCSprite derivative class, some utility methods), you can do this anywhere anytime:
+(void) mediumPixelFormat{
[CCTexture2D setDefaultAlphaPixelFormat:kTexture2DPixelFormat_RGBA4444];
}
+(void) highPixelFormat{
[CCTexture2D setDefaultAlphaPixelFormat:kTexture2DPixelFormat_RGBA8888];
}