How would I delay the 'schedule' and then it unschedules. So that there is a delay in the schedule then it reschedules and changes the interval to a smaller increment?
This the code
- (void)onEnter
{
[super onEnter];
[self schedule:#selector(addMonster:) interval:1.0];
[self schedule:#selector(addBomb:) interval:4.0];
[self schedule:#selector(addLife:) interval:45.0];
}
in your init
[self scheduleUpdate];
In the update call the different selectors when the time condition is met. In order to create the time condition we will need a few global variables.
ccTime addMonsterAfterDuration = 1;
ccTime addMonsterDurationDecrementValue = 0.1;
ccTime timeSpentSinceLastMonsterAdded = 0;
ccTime addMonsterMinDuration =0.2;
-(void) update:(ccTime)delta{
timeSpentSinceLastMonsterAdded += delta;
if(timeSpentSinceLastMonsterAdded == addMonsterAfterDuration){
[self addMonster];
timeSpentSinceLastMonsterAdded = 0;
addMonsterAfterDuration -= addMonsterDurationDecrementValue;
if(addMonsterAfterDuration < addMonsterMinDuration){
addMonsterAfterDuration = addMonsterMinDuration;
}
}
}
The above example is only for addMonsters. I believe you can do the same for other objects in your game.
Related
Please help me as am fed with the searches and new to cocos 2d. Only am getting is the last sprite got moving if i schedule addRed and i want all the sprites moving randomly in the screen. Any help will be Appreciated and thanks in advance.
-(void)addRed
{
redSprite = [CCSprite spriteWithImageNamed:#"Red.png"];;
CGSize screenSize = [[CCDirector sharedDirector] viewSize];
[redSprite setPosition:CGPointMake(screenSize.width/2, screenSize.height/2)];
[self resizeSprite:redSprite toWidth:80 toHeight:80];
[self addChild:redSprite z:10];
[self gameStart];
}
- (void)gameStart {
// Create the actions
CGSize result = [[UIScreen mainScreen] bounds].size;
CGPoint nextPoint;
if (redSprite.position.x == result.width-40.0) {
nextPoint.x = redSprite.position.x - kAccelXAxis;
backx = YES;
}
else {
if (redSprite.position.x == 40.0) {
nextPoint.x = redSprite.position.x + kAccelXAxis;
backx = NO;
}
else {
if (backx) {
nextPoint.x = redSprite.position.x - kAccelXAxis;
}
else
{
nextPoint.x = redSprite.position.x + kAccelXAxis;
}
}
}
if (redSprite.position.y == 40.0) {
nextPoint.y = redSprite.position.y + kAccelYAxis;
backy = YES;
}
else {
if (redSprite.position.y == result.height-40.0) {
nextPoint.y = redSprite.position.y - kAccelYAxis;
backy = NO;
}
else {
if (backy) {
nextPoint.y = redSprite.position.y + kAccelYAxis;
}
else
{
nextPoint.y = redSprite.position.y - kAccelYAxis;
}
}
}
CCAction *myAction = [CCActionSequence actions:[CCActionMoveTo actionWithDuration:0.01 position:nextPoint], [CCActionCallFunc actionWithTarget:self selector:#selector(gameStart)], [CCActionCallFunc actionWithTarget:self selector:#selector(updateCol:)],nil];
[myAction setTag:10];
[redSprite runAction:myAction];
}
Try creating a updater with an interval of 3 sec for creating your sprites. For your created sprites, use a CCRepeatForever which will generate your next positions for your sprite.
For your case, I also thought about using a custom CCSprite to store your next position to move.
You will need something like...
[self schedule:#selector(createSprite) interval:(3)]; //to schedule your sprite generator
// Your sprite generator with action
-(void)createSprite{
CCCustomRed *red = [CCCustomRed spriteWithFile:#"red.png"];
[self addChild:red];
CCCallFuncN *changePos = [CCCallFuncN actionWithTarget:self selector:#selector(setRandomPos:)];
CCMoveTo *move = [CCMoveTo actionWithDuration:1 position:red.nextPosition];
CCDelayTime *delay = [CCDelayTime actionWithDuration:1.0];
[red runAction:[CCRepeatForever actionWithAction:[CCSequence actions:move,changePos,delay,nil]]];
}
//Generate a random pos as your sprite next move
-(void)setRandomPos:(id)sender{
CCCustomRed *red = (CCCustomRed *) sender;
CGSize screenSize = [[CCDirector sharedDirector] winSize];
red.nextPosition = ccp(arc4random()%screenSize.width,arc4random()%screenSize.height);
}
Hope it helps :)
I'm developing a very simple game. Here's my enemy class named Machine's behavior code:
#import "Machine.h"
#implementation Machine
+(id)machineWithWorld:(b2World*)world position:(CGPoint)pos
{
return [[[self alloc] initWithWorld:world position:pos] autorelease];
}
-(id)initWithWorld:(b2World*)world position:(CGPoint)pos
{
if(self = [super initWithShape:[AppDelegate renameFrameForIpad:#"machine"] inWorld:world])
{
size = [CCDirector sharedDirector].winSize;
self.body->SetTransform([Helper toMeters:pos], 0.0);
self.body->SetType(b2_staticBody);
safetyCounter = 5;
[self schedule:#selector(machineSafetyCounter)];
movementWidthInMeters = (size.width-self.contentSize.width)/PTM_RATIO;
linearSpeed = 0.5;
[self schedule:#selector(startMoving) interval:1.5];
}
return self;
}
#pragma mark<Machine Behavior>
-(void)startMoving
{
[self unschedule:_cmd];
float distanceFromCenterInMeters = (size.width/2 - self.position.x)/PTM_RATIO;
float interval = ABS(distanceFromCenterInMeters/linearSpeed);
if(interval < 0.01f)
interval = 0.02f;
b2Vec2 motionDirection = (distanceFromCenterInMeters > 0.0f) ? b2Vec2(1.0, 0.0) : b2Vec2(-1.0, 0.0);
self.body->SetType(b2_kinematicBody);
self.body->SetLinearVelocity(linearSpeed*motionDirection);
[self schedule:#selector(startMotionFromBeginning) interval:interval-0.01];
CCLOG(#"startMoving distance-->%f, interval-->%f", distanceFromCenterInMeters, interval);
}
-(void)startMotionFromBeginning
{
[self unschedule:_cmd];
float interval = (movementWidthInMeters/2)/linearSpeed;
self.body->SetLinearVelocity(0.5*b2Vec2(1.0, 0.0));
[self schedule:#selector(moveRTL) interval:interval-0.01];
[self schedule:#selector(checkIfHelmetIsBelowMachine) interval:0.1];
CCLOG(#"startMotionFromBeginning interval-->%f", interval);
}
-(void)moveRTL
{
[self unschedule:_cmd];
float interval = movementWidthInMeters/linearSpeed;
self.body->SetLinearVelocity(0.5*b2Vec2(-1.0, 0.0));
[self schedule:#selector(moveLTR) interval:interval-0.01];
CCLOG(#"moveRTL interval-->%f", interval);
}
-(void)moveLTR
{
[self unschedule:_cmd];
float interval = movementWidthInMeters/linearSpeed;
self.body->SetLinearVelocity(0.5*b2Vec2(1.0, 0.0));
[self schedule:#selector(moveRTL) interval:interval-0.01];
CCLOG(#"moveLTR interval-->%f", interval);
}
-(void)checkIfHelmetIsBelowMachine
{
[self unschedule:_cmd];
Helmet* helmet = (Helmet*)[[[[[CCDirector sharedDirector] runningScene] children] objectAtIndex:0] getChildByTag:kTagHelmet];
float helmetPosX = helmet.position.x;
if((self.position.x > helmetPosX) && (self.position.x < helmetPosX+helmet.contentSize.width))
{
[self unscheduleAllSelectors];
[self schedule:#selector(machineSafetyCounter) interval:0.1];
[self schedule:#selector(startMovingDownwards) interval:0.0];
return;
}
[self schedule:_cmd interval:0.1];
}
-(void)startMovingDownwards
{
[self unschedule:_cmd];
self.body->SetLinearVelocity(0.25*b2Vec2(0.0, -1.0));
[self schedule:#selector(stopMovingDownwards) interval:1.0];
CCLOG(#"startMovingDownwards");
}
-(void)stopMovingDownwards
{
[self unschedule:_cmd];
self.body->SetLinearVelocity(b2Vec2(0.0, 0.0));
[self schedule:#selector(startMoving) interval:0.2];
CCLOG(#"stopMovingDownwards");
}
All I have done is following:
1) The body is static initially and is positioned at ccp(size.width*0.5, size.height*0.75).
2) After 1.5 seconds, It becomes kinematic and starts moving with a linear speed of 0.5 m/s.
3) It checks it's current distance (from screen width center keeping height same), evaluates the time needed to reach that spot, and then starts moving in that direction horizontally.
4) After reaching that spot, it starts it's signature motion, it starts moving from Left to right, if at any time helmet(another game object) passes underneath it, it starts moving down and stops after 1.0 seconds, then whole cycle repeats.
5) It moves LTR & RTL until it starts to move down when it finds the helmet underneath it.
Now the problem is, sometimes the behavior is exactly same as expected.
And many many times, it starts moving upwards and I have never set the y bit for motion vector in positive direction.
After initializing the body, you should not change its bodyType. When you first make the body, set it as kinematic so you don't run into problems later when trying to change it. Is the body attached to a CCSprite? If so, you should make the class a subclass of CCSprite so you can use [super initWithFile:(NSString *) world:(b2World *)] or some method of your choosing to facilitate your endeavors.
I've created a quiz game, that implements a time bar. In the first play it's all right, but if, after gameover, the player tap "restart", the game goes on properly, but the time bar disappears!
Here my code from GameOverLayer to Game:
-(void) restart {
[[CCDirector sharedDirector] replaceScene:[HelloWorldLayer node]];
}
Here the function to create a new question
-(void)creaDomanda{
//bar
CCProgressFromTo *to1 = [CCProgressFromTo actionWithDuration:MaxTime from:100 to:0];
bar = [CCProgressTimer progressWithFile:#"barra.png"];
bar.type = kCCProgressTimerTypeHorizontalBarLR;
[bar setPosition:ccp(size.width - 250 , size.height - 18)];
int randomValue = (arc4random() % 4) + 1;
NSString *stringa = [NSString stringWithFormat:#"Domanda%i", randomValue];
dictionary = [plistData objectForKey:stringa];
domanda = [dictionary valueForKey:#"Titolo"];
labelDomanda = [CCLabelTTF labelWithString:domanda fontName:#"Marker Felt" fontSize:24];
labelDomanda.position = ccp( size.width /2 , 400 );
[self addChild: labelDomanda];
int rispostaEsatta = [[dictionary valueForKey:#"Soluzione"] intValue];
menu = [CCMenu menuWithItems:nil];
for (int i = 1; i<5;i++)
{
if(rispostaEsatta == i){
item = [CCMenuItemFont itemFromString:[dictionary valueForKey:
[NSString stringWithFormat:#"Risposta%i",i] ]
target:self selector:#selector(corretto)];
}else{
item = [CCMenuItemFont itemFromString:[dictionary valueForKey:
[NSString stringWithFormat:#"Risposta%i",i] ]
target:self selector:#selector(sbagliato)];
}
[menu addChild:item];
}
//[..]
[self addChild:menu];
[self addChild:bar];
[bar runAction:to1];
}
And here one of the correct/wrong method (similar) that after all, create a new question:
-(void)sbagliato{
CCLOG(#"Sbagliato");
if (menu) [self removeChild:menu cleanup:YES];
if (labelDomanda) [self removeChild:labelDomanda cleanup:YES];
if (bar) [self removeChild:bar cleanup:YES];
labelRisultato = [CCLabelTTF labelWithString:#"Hai sbagliato!" fontName:#"Marker Felt" fontSize:24];
[labelRisultato setColor:ccc3(255, 1, 1)];
labelRisultato.position = ccp(size.width / 2, 280);
[self addChild:labelRisultato];
[self gameOver:2 punteggio:0];
// Richiamiamo il metodo per eliminare la label dopo 0,3 secondi
[self performSelector:#selector(eliminaLabel) withObject:nil afterDelay:0.5];
increment = increment - 20;
[pointLabel setString: [NSString stringWithFormat: #"Punti: %i", increment]];
// new question
[self performSelector:#selector(creaDomanda) withObject:nil afterDelay:0.5];
}
Can anyone explain to me please why when I restart the time bar desappers?
Thank You
My best guess:
The CCProgressFromTo action is still running. Since it progresses down to 0, the CCProgressTimer eventually doesn't display any part of it anymore. This may continue even if you run another CCProgressFromTo action on the progress timer.
Solution: be sure to stop any running CCProgressFromTo actions before running another.
If that doesn't fix it, then I imagine the CCProgressTimer needs to be reset by setting percentage back to 100.
I created a CCAnimation as seen below. I tried lowering the delay to something below .05f and the animation now fails to complete! Its only 8 frames. I don't know if I am doing something wrong. At first I thought it was a memory leak and I was losing the action, so I assigned it to a strong property to test that, and still did it. I'm not sure how the delay could cause my animation to fail to finish. I am running in the simulator at 60 frames per sec.
Using Kobold 2.0.4
Can anyone help?
else if([model currentState] == PROCESSING_FIRST_ACTION)
{
CCDirector* director = [CCDirector sharedDirector]; // process model
//Get the top left corner of the screen
int screen_height = director.screenSizeAsPoint.y;
int screen_width = director.screenSizeAsPoint.x;
id attacker = [model attacker];
id attackChoice = [attacker getRegisteredAttack];
CCAction* attack = [model.resourceManager animation: #"simple-attack-frame"];
CCSprite * attackSprite = [model.resourceManager sprite: #"simple-attack-frame-01"];
attackSprite.position = ccp(screen_width - rxa(80), screen_height - rya(80));
attackSprite.tag = 5;
self.action = attack;
CCNode * check = [self getChildByTag:5];
if(check == nil)
{
[self addChild: attackSprite];
[attackSprite runAction:attack];
}
}
resource manager:
-(id)animation: (NSString*)_resource
{
NSMutableArray *frames = [NSMutableArray array];
for(int i = 1; i <= 8; ++i)
{
[frames addObject:
[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:
[NSString stringWithFormat:#"%#-0%d", _resource, i]]];
}
CCAnimation *animation = [CCAnimation animationWithSpriteFrames: frames delay:1/60];
CCAction * action = [CCAnimate actionWithAnimation: animation];
return action;
}
In your line
CCAnimation *animation = [CCAnimation animationWithSpriteFrames: frames delay:1/60];
you're setting the delay to 1/60, but as 1 and 60 are both integers, 1/60 is 0. Try using 1.0f/60.0f and you'll get a floating point divide.
After digging around on the web I found a solution. I'm not the one who submitted this solution but I can attest that it fixed my problems:
https://github.com/cocos2d/cocos2d-iphone/commit/60f9cc98783b9a6a5635db4f468f83e0511c74c8
When i run this code application crashes.
#import "HelloWorldLayer.h"
CCSprite *background,*ball;
CGSize size;
#define PTM_RATIO 32
#implementation HelloWorldLayer
-(id) init
{
if( (self=[super init])) {
size=[[CCDirector sharedDirector]winSize];
background=[CCSprite spriteWithFile:#"Terrain.png"];
background.position=ccp(size.width/2, size.height/2);
[self addChild:background];
b2Vec2 gravity=b2Vec2(0.0f,-10.0f);
world=new b2World(gravity);
b2BodyDef groundDef;
groundDef.position.Set(0,0);
groundBody=world->CreateBody(&groundDef);
b2EdgeShape groundEdge;
b2FixtureDef groundBodyFixtureDef;
groundBodyFixtureDef.shape=&groundEdge;
groundEdge.Set(b2Vec2(0,0), b2Vec2(size.width/PTM_RATIO,0));
groundBody->CreateFixture(&groundBodyFixtureDef);
groundEdge.Set(b2Vec2(0,size.height/PTM_RATIO), b2Vec2(size.width/PTM_RATIO,size.height/PTM_RATIO));
groundBody->CreateFixture(&groundBodyFixtureDef);
groundEdge.Set(b2Vec2(size.width/PTM_RATIO,0), b2Vec2(size.width/PTM_RATIO,size.height/PTM_RATIO));
groundBody->CreateFixture(&groundBodyFixtureDef);
groundEdge.Set(b2Vec2(0,0), b2Vec2(0,size.height/PTM_RATIO));
groundBody->CreateFixture(&groundBodyFixtureDef);
ball=[CCSprite spriteWithFile:#"ball1.png"];
ball.position=ccp(200, 300);
[self addChild:ball];
b2BodyDef ballBodyDef;
ballBodyDef.type=b2_dynamicBody;
ballBodyDef.position.Set(200/PTM_RATIO, 300/PTM_RATIO);
ballBodyDef.userData=&ball;
ballBodyDef.fixedRotation=true;
ballbody=world->CreateBody(&ballBodyDef);
b2CircleShape ballShape;
ballShape.m_radius=ball.contentSize.width/PTM_RATIO/2;
b2FixtureDef ballBodyFixture;
ballBodyFixture.shape=&ballShape;
ballBodyFixture.density=20.0f;
ballBodyFixture.friction=0.0f;
ballBodyFixture.restitution=1.0f;
ballbody->CreateFixture(&ballBodyFixture);
[self schedule:#selector(tick:)];
}
return self;
}
-(void)tick:(ccTime)dt
{
world->Step(dt, 10, 10);
for(b2Body *b=world->GetBodyList();b;b=b->GetNext())
{
if(b->GetUserData()!=NULL)
{
CCSprite *balldata=(CCSprite *)b->GetUserData();
NSLog(#"Inside if");
balldata.position=ccp(b->GetPosition().x*PTM_RATIO, b->GetPosition().y*PTM_RATIO); // When control comes on this line that time application crash
ball1.rotation = -1 * CC_RADIANS_TO_DEGREES(b->GetAngle());
}
}
}
-(void) dealloc
{
[super dealloc];
}
#end
I know this code is true and i was use this code so many time but in my current application this code stop debugging and gives error like this.
-(void) update: (ccTime) dt
{
if( elapsed == - 1)
elapsed = 0;
else
elapsed += dt;
if( elapsed >= interval ) {
impMethod(target, selector, elapsed); // EXC_BAD_ACCESS
elapsed = 0;
}
}
This code is in CCTime class.
In my code i am not using update method so why this error occur????
Please help me.This is a silly error but can not understand why they come...
Thanks
When you try to get the userdata associated with your body:
CCSprite *balldata=(CCSprite *)b->GetUserData();
It is likely that balldata would be null here, which subsequently causes the crash in the next statement.
Why null? Because, earlier on, when you were setting your userdata, you passed &ball (this will get you a pointer to a pointer!) instead of just ball (already a pointer to your required CCSprite object) to the body definition. So, simply change that assignment to:
ballBodyDef.userData=ball; //not &ball