I am doing a game, and I got only 1 final problem. Its that when the game create an enemy the FPS slow to 40 or 20. Depends if it creates 1 or 2 enemies.
NSMutableArray *walkAnimFrames = [NSMutableArray array];
for(int i = 1; i <= 3; ++i) {
[walkAnimFrames addObject:
[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:
[NSString stringWithFormat:#"laser_%d.png", i]]];
}
CCAnimation *walkAnim = [CCAnimation animationWithFrames:walkAnimFrames delay:0.12f];
CCSprite *laser = [CCSprite spriteWithSpriteFrameName:#"laser_1.png"];
int tempY = (arc4random() % ((int)(300 - laser.boundingBox.size.height))) + laser.boundingBox.size.height;
float tempRot = (arc4random() % 30) + 1;
int sign = (arc4random() % 2) - 1;
if (sign < 0) {
tempRot *= -1;
}
laser.tag = 2;
laser.position = ccp(650, tempY);
laser.rotation = CC_RADIANS_TO_DEGREES(tempRot);
CCAction *walkAction = [CCRepeatForever actionWithAction:
[CCAnimate actionWithAnimation:walkAnim restoreOriginalFrame:YES]];
[laser runAction:walkAction];
[spriteSheet addChild:laser];
b2BodyDef spriteBodyDef;
spriteBodyDef.type = b2_dynamicBody;
spriteBodyDef.position.Set(laser.position.x/PTM_RATIO,
laser.position.y/PTM_RATIO);
spriteBodyDef.userData = laser;
b2Body *spriteBody = world->CreateBody(&spriteBodyDef);
[[GB2ShapeCache sharedShapeCache] addShapesWithFile:#"laserBody.plist"];
[[GB2ShapeCache sharedShapeCache] addFixturesToBody:spriteBody forShapeName:#"laser_1"];
[laser setAnchorPoint:[[GB2ShapeCache sharedShapeCache] anchorPointForShape:#"laser_1"]];
//pixeles recoridos/velocidad del move actual
float timeAnim = 800/(60*move);
[laser runAction:[CCSequence actions:
[CCMoveBy actionWithDuration:timeAnim position:ccp(-800, 0)],
[CCCallFuncN actionWithTarget:self selector:#selector(obstaclesDone:)],
nil]];
I am using Physic Editor, to create the shape. After it create. The game works fine in 60 fps. But only in the iPhone. In my iMac works perfectly.
What could do I do to create it without loosing fps. Maybe in the second processor. Or another thread?
Thanks :)
What is the size and quality of the textures you are using? It could be that too much memory is required to create sprite instances making it difficult to keep a high frame rate constantly changing the positions of those sprites. You could also try profiling with Instruments to see what is eating up your processor cycles.
Related
Here some code for Add sprite for Enemies.....
_robbers = [[CCArray alloc] initWithCapacity:kNumAstroids];
for (int i = 0; i < kNumAstroids; ++i) {
CCSprite *asteroid = [CCSprite spriteWithSpriteFrameName:#"robber.png"];
asteroid.visible = NO;
[_batchNode addChild:asteroid];
[_robbers addObject:asteroid];
}
And in Update method ........
double curTime = CACurrentMediaTime();
if (curTime > _nextRunemanSpawn) {
float randSecs = [self randomValueBetween:0.20 andValue:1.0];
_nextRunemanSpawn = randSecs + curTime;
float randY = [self randomValueBetween:80 andValue:80];
float randDuration = [self randomValueBetween:4.5 andValue:4.5];
float randDuration1 = [self randomValueBetween:1.0 andValue:1.0];
CCSprite *asteroid = [_robbers objectAtIndex:_nextRobber];
_nextRobber++;
if (_nextRobber >= _robbers.count) {
_nextRobber = 1;
}
[asteroid stopAllActions];
asteroid.position = ccp(winSize.width +asteroid.contentSize.width / 2 , randY);
asteroid.visible = YES;
[asteroid runAction:[CCSequence actions:[CCMoveBy actionWithDuration:randDuration position:ccp(-winSize.width-asteroid.contentSize.width, 0)],
[CCCallFuncN actionWithTarget:self selector:#selector(setInvisible:)],nil]];
All Sprites are Move from right to left in screen
when Sprite crosses the middle of the screen it automatically disappear
what is the reason for this problem ??
I agree with the previously mentioned statement from LearnCocos2D. It is also possible that you are adding multiple objects and reaching the end of the capacity in the line
_robbers = [[CCArray alloc] initWithCapacity:kNumAstroids];
If you try to spawn more objects than whatever number you have specified for kNumAsteroids it will remove the oldest object and use the new one in its place. I.e. if kNumAsteroids is 5, you have 5 on the screen and then add a sixth, 1 will become 6 and its position will be whatever you set it to.
I want a snow particle effect to follow my sprite and I tried some methods but all that ends up happening is the snow will just stay still instead of following. I did this one tutorial (will post as soon as I find it) thats shows how it do it with fire but didn't work out at all. Any tutorials or suggestions will be appreciated. I believe i have to add some kind of code to the snippet part where it says create enemy off screen.
[self schedule:#selector(gameLogicboss:) interval:180 ];
[self schedule:#selector(updateboss:)];
-(void)addTarget1 {
Boss *target1 = nil;
if ((arc4random() % 2) == 0) {{
target1 = [WeakAndFastBoss boss];
}} else {
target1 = [WeakAndFastBoss boss];
}
// Determine where to spawn the target along the Y axis
CGSize winSize = [[CCDirector sharedDirector] winSize];
int minY = target1.contentSize.height/2;
int maxY = winSize.height - target1.contentSize.height/2;
int rangeY = maxY - minY;
int actualY = (arc4random() % rangeY) + minY;
// Create the target slightly off-screen along the right edge,
// and along a random position along the Y axis as calculated above
target1.position = ccp(winSize.width + (target1.contentSize.width/2), actualY);
[self addChild:target1 ];
// Determine speed of the target
int minDuration = target1.minMoveDuration;
int maxDuration = target1.maxMoveDuration;
int rangeDuration = maxDuration - minDuration;
int actualDuration = (arc4random() % rangeDuration) + minDuration;
// Create the actions
id actionMove = [CCMoveTo actionWithDuration:actualDuration position:ccp(-target1.contentSize.width/2, actualY)];
id actionMoveDone = [CCCallFuncN actionWithTarget:self
selector:#selector(spriteMoveFinished:)];
[target1 runAction:[CCSequence actions:actionMove, actionMoveDone, nil]];
target1.tag = 1;
[_targets addObject:target1];
}
-(void)gameLogicboss:(ccTime)dt {
[self addTarget1];
iterations_++;
}
- (void)updateboss:(ccTime)dt {
CGRect projectileRect = CGRectMake(projectile.position.x - (projectile.contentSize.width/2), projectile.position.y - (projectile.contentSize.height/2), projectile.contentSize.width, projectile.contentSize.height);
BOOL bossHit = FALSE;
NSMutableArray *targetsToDelete = [[NSMutableArray alloc] init];
for (CCSprite *target1 in _targets) {
CGRect target1Rect = CGRectMake(target1.position.x - (target1.contentSize.width/2), target1.position.y - (target1.contentSize.height/2), target1.contentSize.width, target1.contentSize.height);
if (CGRectIntersectsRect(projectileRect, target1Rect)) {
//[targetsToDelete addObject:target];
bossHit = TRUE;
Boss *boss = (Boss *)target1;
boss.hp--;
if (boss.hp <= 0) {
_score ++;
[targetsToDelete addObject:target1];
}
break;
}
}
for (CCSprite *target in targetsToDelete) {
[_targets removeObject:target];
[self removeChild:target cleanup:YES];
_projectilesDestroyed++;
if (_projectilesDestroyed > 2) {
}
}
if (bossHit) {
//[projectilesToDelete addObject:projectile];
[[SimpleAudioEngine sharedEngine] playEffect:#"explosion.caf"];
}
[targetsToDelete release];
}
-(void)spriteMoveFinishedboss:(id)sender {
CCSprite *sprite = (CCSprite *)sender;
[self removeChild:sprite cleanup:YES];
GameOverScene *gameOverScene = [GameOverScene node];
[gameOverScene.layer.label setString:#"You Lose"];
[[CCDirector sharedDirector] replaceScene:gameOverScene];
if (sprite.tag == 1) { // target
[_targets removeObject:sprite];
} else if (sprite.tag == 2) { // projectile
[_projectiles removeObject:sprite];
}
}
I Have found this, at CCParticleSystem.h
/** #typedef tCCPositionType
possible types of particle positions
/
typedef enum {
/* Living particles are attached to the world and are unaffected by emitter repositioning. */
kCCPositionTypeFree,
/** Living particles are attached to the world but will follow the emitter repositioning.
Use case: Attach an emitter to an sprite, and you want that the emitter follows the sprite.
*/
kCCPositionTypeRelative,
/** Living particles are attached to the emitter and are translated along with it. */
kCCPositionTypeGrouped,
you should set it like
myparticleSystem.positionType=kCCPositionTypeGrouped;
Hope it helps.
You don't need to update the particle emitter's position with the sprite.
You can add a particle system to the sprite as a child.
The particle system does need to be typed as such:
CCParticleSystem * booster = [CCParticleSystem particleWithFile:#"boosterParticles.plist"];
//customize your particles' options
//assuming you have a sprite defined as _motherShip
[_motherShip addChild:booster];
/*
* now that the particles are the _motherShip's child, you must remember
* to set the position relative to the mothership's origin...
*/
particles.position = ccp(15,0);
...So now whenever _motherShip.position changes, the booster will follow. It will even rotate with the ship.
Very simple logic without getting into code:
I spawn a sprite and give it a location (x, y).
For each sprite, I also spawn a CCParticleSystem, give it the required particle type, spawn rates etc.
The CCParticleSystem location is now set to be the same (x,y) location as the sprite, and it should get updated as the sprite's (x,y) location is update.
As the sprite and the CCParticleSystem move around, this location (x, y) is getting updates constantly at random in your schedule method per the interval step time.
Hope that makes sense.
I do this
vehicleParticleSystem = [CCParticleSystemQuad particleWithFile:#"vehicleParticle.plist"];
vehicleParticleSystem.position = ccp(_ship.position.x - _ship.contentSize.width/3, _ship.position.y - _ship.contentSize.height/3);
if (UI_USER_INTERFACE_IDIOM() != UIUserInterfaceIdiomPad) {
vehicleParticleSystem.scale = 0.5;
}
[self addChild:vehicleParticleSystem z:-1];
and update its position with this
- (void) updateParticleSystem:(ccTime)dt {
vehicleParticleSystem.position = ccp(_ship.position.x - _ship.contentSize.width/3, _ship.position.y - _ship.contentSize.height/3);
}
which is called in the -(void) update:(ccTime)dt method.
The ship is moved by the user via a joypad.
hope this helps. The positioning for the particle is slightly behind the vehicle for an engine effect.
Did you tried to update your particle position taking advantage of the update method?
I'm doing something like the following lines in one of my games and it works as I think you expect
-(void) update:(CCTime)delta{
_sprite.position = CGPointMake(newXPosition, newYPosition);
_fire.position = CGPointMake(_sprite.position.x, _sprite.position.y);
}
I hope it helps!
I recently started game programming on the iPhone using Cocos2d and Box2d. So here's my problem:
I've got a Player class which inherits from CCSprite, and within that class, there's this method:
-(void) createBox2dObject:(Player *)sender
forWorld:(b2World*)world {
b2BodyDef playerBodyDef;
playerBodyDef.type = b2_dynamicBody;
playerBodyDef.position.Set(sender.position.x/PTM_RATIO, sender.position.y/PTM_RATIO);
playerBodyDef.userData = sender;
body = world->CreateBody(&playerBodyDef);
b2PolygonShape dynamicBox;
dynamicBox.SetAsBox(sender.contentSize.width/PTM_RATIO,
sender.contentSize.height/PTM_RATIO);
b2FixtureDef polygonShapeDef;
polygonShapeDef.shape = &dynamicBox;
polygonShapeDef.density = 1.0f;
polygonShapeDef.friction = 1.0f;
polygonShapeDef.restitution = 0;
body->CreateFixture(&polygonShapeDef);
}
and here's how I call this:
self.player = [Player spriteWithSpriteFrameName:#"runningrupol-1.png"];
_player.position = ccp(_player.boundingBox.size.width/2 + 32, _player.boundingBox.size.height/2 + 32);
self.walkAction = [CCRepeatForever actionWithAction:
[CCAnimate actionWithAnimation:walkAnim restoreOriginalFrame:NO]];
[_player runAction:_walkAction];
[spriteSheet addChild:_player];
[_player createBox2dObject:_player forWorld:_world];
Obviously, I'm using a spritesheet which is animated.
Here's how I update the world:
- (void)tick:(ccTime) dt {
_world->Step(dt, 8, 10);
for(b2Body *b = _world->GetBodyList(); b; b=b->GetNext()) {
if (b->GetUserData() != NULL) {
CCSprite *playerData = (CCSprite *)b->GetUserData();
playerData.position = ccp(b->GetPosition().x * PTM_RATIO,
b->GetPosition().y * PTM_RATIO);
playerData.rotation = -1 * CC_RADIANS_TO_DEGREES(b->GetAngle());
}
}
}
And here's how I call it in the init method:
[self schedule:#selector(tick:)];
This is what I see:
Please help. And if you need additional info, just tell me.
SetAsBox() uses half-height and half-width (quirky I know), so divide the parameters by 2:
dynamicBox.SetAsBox(sender.contentSize.width/PTM_RATIO/2,
sender.contentSize.height/PTM_RATIO/2);
When you try this, leave the anchor point as is (the default value if you don't explicitly set it should be ccp(0.5,0.5), the center of your sprite, and you want that).
You can change the anchorpoint for the sprite. Here is a good tutorial:
http://www.qcmat.com/understanding-anchorpoint-in-cocos2d/
Sorry about the poor question title, it's just that this seems to big for a title. So here's the dirt:
I am making a game (obviously) and I want the enemies to shoot (not necessarily at the player). I want the shoot method to be in the Enemies file, so as not to clutter up my HelloWorldLayer.m file even more. Here's what I'm using right now:
HelloWorldLayer.m
-(void)addEnemy:(BigAndStrongEnemy *)enemy {
enemy = nil;
if((arc4random() % 4) == 3) {
enemy = [BigAndStrongEnemy enemy];
} else {
enemy = [SmallAndFastEnemy enemy];
}
if(buffDude.position.y > character.position.y || buffDude.position.y < (character.position.y + 10)) {
}
int rand = arc4random() % 320;
if((arc4random() % 2 == 1)) {
[enemy setPosition:ccp(0,rand)];
}else{
[enemy setPosition:ccp(480,rand)];
}
[self animateEnemy:enemy];
[self addChild:enemy];
}
-(void)animateEnemy:(BigAndStrongEnemy *)enemy2 {
float randX = arc4random() % 480;
float randY = arc4random() % 320;
int rand = arc4random() % 320;
CGPoint moveToPoint = CGPointMake(randX, (randY - rand));
[enemies addObject:enemy2];
action = [CCSequence actions:
[CCMoveBy actionWithDuration:1 position:ccpMult(ccpNormalize(ccpSub(moveToPoint, enemy2.position)), 75)],
[CCMoveBy actionWithDuration:3 position:ccp(buffDude.position.x,buffDude.position.y)],
nil];
CCCallFuncO *a = [CCCallFuncO actionWithTarget:self selector:(#selector(shoot:)) object:enemy2];
CCSequence *s = [CCSequence actions:action,a, nil];
CCRepeatForever *repeat = [CCRepeatForever actionWithAction:s];
[enemy2 runAction:repeat];
}
And here's the Shoot info from the Enemies class:
Enemies.m:
-(void)shoot:(id)sender {
BigAndStrongEnemy *enemy = (BigAndStrongEnemy *)sender;
[enemy shoot];
}
-(void)spriteMoveFinished:(id)sender {
CCSprite *b = (CCSprite *)sender;
[self removeChild:b cleanup:YES];
}
-(void)shoot {
buffDude = [CCSprite spriteWithFile:#"bigAndStrongEnemy.gif"];
CCSprite *b = [CCSprite spriteWithFile:#"bullet.gif"];
b.position = ccp(self.position.x,self.position.y);
b.tag = 2;
[self addChild:b];
[bullets addObject:b];
CGSize winSize = [[CCDirector sharedDirector] winSize];
CGPoint point = CGPointMake((winSize.width - (winSize.width - self.position.x)),0);
[b runAction:[CCSequence actions:
[CCMoveBy actionWithDuration:0.5 position:point],
[CCCallFuncN actionWithTarget:self selector:#selector(spriteMoveFinished:)],
nil]];
}
Every time the 3 seconds goes by, the app crashes, and goes to the breakpoint in the CCCallFuncO file. I haven't touched it, is the thing. I am completely confused. Any help is greatly appreciated. Sorry about the long question. Thanks!!
It looks like your CCCallFuncO is calling [self shoot:enemy2] where self is the HelloWorldLayer object, but shoot is defined in the Enemies class.
Edit:
buffDude should be released before assigning it and retain it afterwards, like this:
Change this:
buffDude = [CCSprite spriteWithFile:#"bigAndStrongEnemy.gif"];
to this:
[buffDude release];
buffDude = [CCSprite spriteWithFile:#"bigAndStrongEnemy.gif"];
[buffDude retain];
This assumes that this is the only place where buffDude is assigned. If it is also assigned elsewhere, make sure you properly retain and release it there as well.
Although, the more I think about it, I don't understand why you create a new buffDude every time shoot is called. I'm not sure what you're doing, so I won't say it's wrong, but it doesn't look right to me anyway.
from what i see (and the fact that i only worked with cocos2d-x) i can only tell you to test whether it steps inside your shoot funciton or not, but i guess you are somhow using CCCallFuncO bad, maybe you have to call it passing enemy2 also for the actionWithTarget parameter (i can tell that becouse that's how cocos2d-x works), also check if big and small enemy types can be converted together freely.
i have three simple images each for 2 hens (6 images) which I am trying to animate (a hen walking) using a very good tutorial by Ray Wenderlich:
http://www.raywenderlich.com/1271/how-to-use-animations-and-sprite-sheets-in-cocos2d
The animation works fine when I start the game but after 2-3 mins the Frame Rate begins to drop and slowly it drops to below 10 and the application hangs.. btw I am using iPhone 3G with iOS 4.1 ... can that be the reason for the FPS drop or just the iPhone becomes idle after some time?
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:#"hen.plist"];
CCSpriteBatchNode *spriteSheet = [CCSpriteBatchNode batchNodeWithFile:#"hen.png"];
[self addChild:spriteSheet];
// Load up the frames of our animation
NSMutableArray *walkAnimFrames = [NSMutableArray array];
for(int i = 1; i <= 3; ++i) {
[walkAnimFrames addObject:[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:#"%d.png", i]]];
}
CCAnimation *walkAnim = [CCAnimation animationWithFrames:walkAnimFrames delay:0.1f];
self.bear = [CCSprite spriteWithSpriteFrameName:#"1.png"];
_bear.position = ccp(20,400);
self.walkAction = [CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:walkAnim restoreOriginalFrame:NO]];
[_bear runAction:_walkAction];
[spriteSheet addChild:_bear];
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:#"monkey.plist"];
CCSpriteBatchNode *spriteSheetMonkey = [CCSpriteBatchNode batchNodeWithFile:#"monkey.png"];
[self addChild:spriteSheetMonkey];
NSMutableArray *walkAnimFramesMonkey = [NSMutableArray array];
for(int i = 1; i <= 3; ++i) {
[walkAnimFramesMonkey addObject:[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:#"%d.png", i]]];
}
CCAnimation *walkAnimMonkey = [CCAnimation animationWithFrames:walkAnimFramesMonkey delay:0.1f];
self.monkey = [CCSprite spriteWithSpriteFrameName:#"1.png"];
_monkey.position = ccp(40,80);
self.walkMonkey = [CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:walkAnimMonkey restoreOriginalFrame:NO]];
[_monkey runAction:_walkMonkey];
[spriteSheetMonkey addChild:_monkey];
float bearVelocity = 480.0/3.0;
CGPoint moveDifferenceHen = ccpSub(HenLoction, _bear.position);
float distanceToMoveHen = ccpLength(moveDifferenceHen);
float moveDurationHen = distanceToMoveHen / bearVelocity;
self.moveAction = [CCSequence actions:
[CCMoveTo actionWithDuration:moveDurationHen position:HenLoction],
[CCCallFunc actionWithTarget:self selector:#selector(bearMoveEnded)],
nil
];
[_bear runAction:_moveAction];
Sounds like you might have a memory leak. My advice would be to run the Leaks and ObjectAlloc Instruments on the device. Also, you should post the relevant code if you want more detailed assistance.
A memory leak seems most likely.
If that's not it then I'd look at things like data structures you're traversing, any kind of decision-tree-like elements you're building over time, that kind of thing. Anything where there isn't necessarily a memory leak but something might be legitimately getting big or complex, requiring increasing processing time.
If the app has to work through this several-to-many times a second, everything would slow down. It could be the kind of thing where it's getting twice as complicated or large ever few minutes, and the early doublings are still fast and easy to calculate. When it doubles from, say, 256 times as complex as the original to 512 times, the slowdown starts to become apparent.