sorry, my english level is very low.
my code...
CCNode *A = [self getChildByTag:kATag];
CCNode *B = [self getChildByTag:kBTag];
CCMoveTo *MoveAction = [CCMoveTo actionWithDuration:1.0f position:A.position.x, 0];
[A runAction:[[MoveAction]copy];
[B runAction:[[MoveAction]copy];
B sprite is moved.
but A sprite does Not Move.
so, i added
[A stopAllActions];
[A runAction:[[MoveAction]copy];
[B runAction:[[MoveAction]copy];
but does not work.
[A setVisible:NO]
so, this code is work.
Sprite A is Hide.
Why CCMoveTO does not work????
CCMoveTo was deprecated in V3, now CCActionMoveTo is used.
Try this:
CGPoint location = [touch locationInView:[touch view]];
CGPoint convertedLocation = [[CCDirector sharedDirector] convertToGL:location];
CCActionMoveTo *MoveAction = [CCActionMoveTo actionWithDuration:1.0f position:convertedLocation];
[A runAction:[[MoveAction]copy];
[B runAction:[[MoveAction]copy];
Try with
CMoveTo *MoveAction = [CCMoveTo actionWithDuration:1.0f position:CGPointMake(A.position.x, 0)];
Also, what is the A's Y position? If it is 0, then it won't move anywhere.
CCNode *A = [self getChildByTag:kATag];
CCNode *B = [self getChildByTag:kBTag];
CCMoveTo *MoveActionA = [CCMoveTo actionWithDuration:1.0f position:A.position.x+10, 0];
CCMoveTo *MoveActionB = [CCMoveTo actionWithDuration:1.0f position:B.position.x+10, 0];
[A runAction:MoveActionA];
[B runAction:MoveActionB];
Each CCNode must have its own CCAction object. You can't use a single CCAction for multiple CCNodes.
Double check that the position you are moving to is correct. In your code it is possible to you were moving it to its current position.
There was no need for the "copy" to run the action.
Related
I can't figure out how to handle with tile map layer and other node. I want to make another one layer(CCNode) for such things as menu button, score, joystick that must always stay fixed(not scrolled), when the whole map is scrolled.
self.theMap=[CCTiledMap tiledMapWithFile:#"map.tmx"];
self.bgLayer=[theMap layerNamed:#"bg"];
[self addChild:theMap z:-1];
CCNode *joystickNode;
joystickNode=[CCNode node];
[bgLayer.parent addChild:joystickNode z:2];
upArrowFrame=[CCSpriteFrame frameWithImageNamed:#"uparrow.png"];
upArrow=[CCButton buttonWithTitle:#"" spriteFrame:upArrowFrame];
[upArrow setTarget:self selector:#selector(upArrowPressed)];
upArrow.position= ccp(190,190);
[joystickNode addChild:upArrow z:2];
Now upArrow is not visible on the screen at all. If I add to self instead of joystickNode, it will appear.
I can't even understand, what parent should new CCNode have. Can anyone explain it to me? I also tried to add new CCNode as a child of self and theMap.
EDIT: Oops, it's actually moving the camera. How to implement it in this case?
-(void)setCenterOfScreen :(CGPoint) position {
CGSize screenSize=[[CCDirector sharedDirector]viewSize];
int x=MAX(position.x, screenSize.width/2);
int y=MAX(position.y, screenSize.height/2);
x= MIN(x, theMap.mapSize.width * theMap.tileSize.width - screenSize.width/2);
y= MIN(y, theMap.mapSize.height * theMap.tileSize.height - screenSize.height/2);
CGPoint goodPoint =ccp(x,y);
CGPoint centerOfScreen = ccp(screenSize.width/2, screenSize.height/2);
CGPoint difference = ccpSub(centerOfScreen, goodPoint);
self.position=difference;
}
- (void)update:(CCTime)dt{
[self setCenterOfScreen:hero.position];
}
I would like to know how to change the ZOrder of a CCSprite in a CCSequence. I have tried using CCCallBlock as suggested in another thread but it has bugged out and stops the other sprites of the same class moving. Is there another method someone can suggest?
crystalEntryPoint = [self position];
float xD = [crystal position].x - crystalEntryPoint.x;
float yD = [crystal position].y - crystalEntryPoint.y;
CGPoint dest = ccp(crystalEntryPoint.x + (xD * 2),crystalEntryPoint.y + (yD * 2));
float easingRate = 2;
CCMoveTo *moveTo = [CCMoveTo actionWithDuration:1 position:dest];
CCMoveTo *moveBack = [CCMoveTo actionWithDuration:1 position:crystalEntryPoint];
CCEaseInOut *easeTo = [CCEaseInOut actionWithAction:moveTo rate:easingRate];
CCEaseInOut *easeBack = [CCEaseInOut actionWithAction:moveBack rate:easingRate];
CCCallBlock *zOrderBehind = [CCCallBlock actionWithBlock:^{ [self setZOrder:kManaSpriteBehindCrystalZValue]; }];
CCCallBlock *zOrderInFront = [CCCallBlock actionWithBlock:^{ [self setZOrder:kManaSpriteZValue]; }];
CCSequence *seq = [CCSequence actions:easeTo,zOrderBehind,easeBack,zOrderInFront,nil]; //,zOrderInfront
CCRepeatForever *rep = [CCRepeatForever actionWithAction:seq];
[self runAction:rep];
Try CCCallBlockN which gives the block the node running the action as parameter. The current setup retains self inside the block which may cause the node not to dealloc later on because the sequence runs forever and thus holds a strong self-reference until the node deallocates - I can't say if cocos2d is able to clean it up properly, it should but it might not.
Not sure if this is related to your issue or not but it seems to me a likely explanation considering everything else in the code snippet looks fine.
CCCallBlockN *zOrderBehind = [CCCallBlockN actionWithBlock:^(CCNode* node){
[node setZOrder:kManaSpriteBehindCrystalZValue];
}];
CCCallBlockN *zOrderInFront = [CCCallBlockN actionWithBlock:^(CCNode* node){
[node setZOrder:kManaSpriteZValue];
}];
If that doesn't work either then try CCActionTween which allows changing any property by name.
id zOrderChange = [CCActionTween actionWithDuration:0.0
key:"zOrder"
from:kManaSpriteZValue
to:kManaSpriteZValue];
I'm not sure if from / to having the same value will work. If it doesn't try using 0 as the from parameter and perhaps even increasing duration to some low value like 0.01.
I have been looking for the past couple of hours for a way to create a stroke around labels in cocos2d but so far all I have come up with is this: CCLabelTTF Font Stroke Demo this is just what I need but the stroke looks very blocky, and I am needing something that looks smoother. Is there any way to turn on some kind of antialiasing for the stroke or maybe there is some other way to create a stroke. Any help would be appreciated.
To create a stroke:
-(CCRenderTexture*) createStroke: (CCLabelTTF*) label size:(float)size color:(ccColor3B)cor
{
CCRenderTexture* rt = [CCRenderTexture renderTextureWithWidth:label.texture.contentSize.width+size*2 height:label.texture.contentSize.height+size*2];
CGPoint originalPos = [label position];
ccColor3B originalColor = [label color];
BOOL originalVisibility = [label visible];
[label setColor:cor];
[label setVisible:YES];
ccBlendFunc originalBlend = [label blendFunc];
[label setBlendFunc:(ccBlendFunc) { GL_SRC_ALPHA, GL_ONE }];
CGPoint bottomLeft = ccp(label.texture.contentSize.width * label.anchorPoint.x + size, label.texture.contentSize.height * label.anchorPoint.y + size);
//CGPoint positionOffset = ccp(label.texture.contentSize.width * label.anchorPoint.x - label.texture.contentSize.width/2,label.texture.contentSize.height * label.anchorPoint.y - label.texture.contentSize.height/2);
//use this for adding stoke to its self...
CGPoint positionOffset= ccp(-label.contentSize.width/2,-label.contentSize.height/2);
CGPoint position = ccpSub(originalPos, positionOffset);
[rt begin];
for (int i=0; i<360; i+=60) // you should optimize that for your needs
{
[label setPosition:ccp(bottomLeft.x + sin(CC_DEGREES_TO_RADIANS(i))*size, bottomLeft.y + cos(CC_DEGREES_TO_RADIANS(i))*size)];
[label visit];
}
[rt end];
[[[rt sprite] texture] setAntiAliasTexParameters];//THIS
[label setPosition:originalPos];
[label setColor:originalColor];
[label setBlendFunc:originalBlend];
[label setVisible:originalVisibility];
[rt setPosition:position];
return rt;
}
Usage:
CCRenderTexture* myStroke = [self createStroke:myCCLabelTTF size:myStrokeSize color:ccYELLOW];
[myCCLabelTTF addChild:myStroke z:-1 tag:kTagStroke];
And to increase smoothness, modify the following function to fit your needs (decrease the +60 increment to perhaps +30). Just note that the more iterations, the more more time spent rendering, which will negatively affect performance:
for (int i=0; i<360; i+=60) // you should optimize that for your needs
{
[label setPosition:ccp(bottomLeft.x + sin(CC_DEGREES_TO_RADIANS(i))*size, bottomLeft.y + cos(CC_DEGREES_TO_RADIANS(i))*size)];
[label visit];
}
I haven't seen easy examples about rotaion around a specified point. I tried something like this but it doesn't work:
//CCNode *node is declared
//In a function of a subclass of CCSprite
- (void)moveWithCicrlce
{
anchorNode = [CCNode node];
anchorNode.position = ccpSub(self.position, circleCenter);
anchorNode.anchorPoint = circleCenter;
[anchorNode runAction:[CCRotateBy actionWithDuration:1 angle:90]];
[self runAction:[CCRepeatForever actionWithAction:[CCSequence actions:[CCCallFunc actionWithTarget:self selector:#selector(rotate)], [CCDelayTime actionWithDuration:0.1], nil]]];
}
- (void)rotate
{
self.position = ccpAdd(anchorNode.position, anchorNode.anchorPoint);
}
Here's how you can rotate a node (sprite etc) around a certain point P (50,50) with a radius (distance from P) of 100:
CCNode* center = [CCNode node];
center.position = CGPointMake(50, 50);
[self addChild:center];
// node to be rotated is added to center node
CCSprite* rotateMe = [CCSprite spriteWithFile:#"image.png"];
[center addChild:rotateMe];
// offset rotateMe from center by 100 points to the right
rotateMe.position = CGPointMake(100, 0);
// perform rotation of rotateMe around center by rotating center
id rotate = [CCRotateBy actionWithDuration:10 rotation:360];
[center runAction:rotate];
My approximate solution:
#interface Bomb : NSObject {
CCSprite *center;
}
...
#end
and some methods:
- (void)explode
{
BombBullet *bullet = [BombBullet spriteWithFile:#"explosion03.png"];
[[[CCDirector sharedDirector] runningScene] addChild:bullet];
center = [CCSprite spriteWithTexture:bullet.texture];
center.position = explosionPoint;
center.anchorPoint = ccp(-0.5, -0.5);
center.visible = NO;
[[[CCDirector sharedDirector] runningScene] addChild:center];
[center runAction:[CCRotateBy actionWithDuration:1 angle:360]];
CCCallFunc *updateAction = [CCCallFuncN actionWithTarget:self selector:#selector(update:)];
[bullet runAction:[CCRepeatForever actionWithAction:[CCSequence actions:updateAction, [CCDelayTime actionWithDuration:0.01], nil]]];
}
- (void)update:(id)sender
{
BombBullet *bombBullet = (BombBullet *)sender;
bombBullet.rotation = center.rotation;
bombBullet.position = ccpAdd(center.position, center.anchorPointInPoints);
bombBullet.position = ccpAdd(bombBullet.position, ccp(-bombBullet.contentSize.width / 2, -bombBullet.contentSize.height / 2));
bombBullet.position = ccpRotateByAngle(bombBullet.position, center.position, bombBullet.rotation);
}
of course I should add sprite deleting.
I've got to sprites, essentially a nucleus (parent) and an electron (child). I'm trying to find a way to have the electron orbit the nucleus. I've found a few posts here and there on moving anchor points, but that is apparently related to the texture of the sprite, not the sprite itself.
This is my current init method for my parent sprite:
self = [super init];
if (self) {
CCSprite *orbitAnchor = [CCSprite new];
[self addChild:orbitAnchor];
orbitAnchor.position = ccp(32,32);
CCSprite *orbiter = [CCSprite spriteWithFile:#"line.png" rect:CGRectMake(0, 0, 8, 8)];
[orbitAnchor addChild:orbiter];
orbiter.position = ccp(40,40);
CCAction *orbitAction = [CCRepeatForever actionWithAction:[CCRotateTo actionWithDuration:1 angle:720]];
[orbitAnchor runAction:orbitAction];
[self initAnimations];
}
return self;
Those numbers are all totally arbitrary though - I just stuck them in there and got what looked best. I'm sure there's a more programatic way to do what I want.
Basically, I'm looking for a way to set the child's axis point at the center of the parent, and then have it rotate around that point. It seems like a relatively simple thing to do using CCRotate and such, but I think I'm missing what to search for in order to move the anchor point of the child. Any suggestions/other posts?
Thanks
You have [CCSprite new] which is an unusual use, probably not supported. Unless the orbit anchor node should display a texture, you can just use a CCNode as anchor.
Technically you're doing everything correct from what I can see. You might want to try without the rotate actions and instead change the direction manually in a scheduled update method.
CCNode *orbitAnchor = [CCNode node];
[self addChild:orbitAnchor z:0 tag:1];
orbitAnchor.position = ccp(32,32);
CCSprite *orbiter = [CCSprite spriteWithFile:#"line.png" rect:CGRectMake(0, 0, 8, 8)];
[orbitAnchor addChild:orbiter z:0 tag:2];
orbiter.position = ccp(40,40);
[self scheduleUpdate];
Update method:
-(void) update:(ccTime)delta
{
CCNode* orbitAnchor = [self getChildByTag:1];
orbitAnchor.direction += 5;
}
From the image filename it looks like you're trying to draw a line from the orbitAnchor to the orbiter. You can do that with ccDrawLine:
-(void) draw
{
CCNode* orbitAnchor = [self getChildByTag:1];
CCNode* orbiter = [self getChildByTag:2];
ccDrawLine(orbitAnchor.position, orbiter.position);
}
Anchor points. Automatically, objects are placed based on the center of an object right? with anchor points you can move that around, so if you rotate the object it will rotate around the anchorpoint. http://www.qcmat.com/understanding-anchorpoint-in-cocos2d/