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cocos2dbeginner
Member
Hi,
First..
I have on Joystick which I implemented with the sneakyinput classes
i put a sprite on the screen
all works until here...
now my question: How can I rotate the sprite with the joystick...e.g. if i push/pull the joystick up the sprite should look up
My code that doesn't really work..
1.problem..if i push the joystick up the sprite looks down
2.problem..if i don't touch the joystick the sprite rotates to it's previous rotate..
playerSprite.rotation = joyStick.degrees;
chrisco
Member
I don't really know the SneakyInput stuff, but for problem 1, have you tried rotating your actual sprite artwork 180˚? If that's too time-consuming, you could always try:
playerSprite.rotation = -joyStick.degrees;As for problem two, my guess is you're assigning playerSprite.rotation every time the joyStick moves. What you should do instead is update the rotation whenever joyStick is being used by the player, but ignore it's position as soon as the player lets go. If that doesn't make sense, can you post a little bit more code to show where you're updating your rotation and how often?
Chris
chrisco
Member
Well, it makes sense that it's returning to it's normal position since you're updating the rotation constantly. If you call rightJoystick.autoCenter = FALSE; when you first create the joyStick, does that sort of solve your problem?
Looking over the source for JoyStick, it seems odd that there's no isActive variable that you could refer to. I guess it would be easy enough to add -
In SneakyJoystick.h:
@interface SneakyJoystick : CCNode <CCTargetedTouchDelegate> {
...
BOOL isActive;
}
@property (readwrite, assign, nonatomic) BOOL isActive;
...Now synthesize it in SneakyJoystick.m:
@synthesize
...
deadRadius,
isActive;In SneakyJoystick.m, in the -initWithRect: method, under self.deadRadius = 0.0f;:
self.isActive = FALSE;Under the ccTouchBegan:event: method, before the method returns YES:
if(joystickRadiusSq > dSq){
[self updateVelocity:location];
self.isActive = TRUE;
return YES;
}and finally at the start of ccTouchEnded:event: method:
self.isActive = FALSE;Then just change your code:
//interval:1.0f/120.0f
-(void)mainGameLoop:(float)delta {
if (rightJoystick.isActive) {
player.rotation = -rightJoystick.degrees;
}
}I think that will work, though I haven't tested it...
Chris
Hey,
I am having the same issue. I solved problem 1.
I tried your code chris, but when I get an error, "request for member isActive is not a structure or union"...
Any ideas?
Did you do something different cocos2dbeginner?
Thanks a lot!
Ben
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