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smileX
Member
Hey! I found a bunch of tutorials and examples how to register when a sprite is touched, but I really don´t need a sprite for what I´m trying to accomplish.
I need to register when a player touches the edges of the screen, left and right, so I thought maybe I can create a rectangle in the layer and set their positions to the edges.
So, is this the right way to go? It would be awesome if some kind soul would give some directions on how to do this.
Regards.
In you scene onEnter, you add something like
[ [ CCTouchDispatcher sharedDispatcher ] addTargetedDelegate:self priority:0 swallowsTouches:YES ];And then you implement
ccTouchBegan, ccTouchMoved, ccTounchEnded.
Ex
-( BOOL )ccTouchBegan:( UITouch* )touch withEvent:( UIEvent* )event {
CGPoint pos;
// get touch position and convert to screen coordinates
pos = [ touch locationInView: [ touch view ] ];
pos = [ [ CCDirector sharedDirector ] convertToGL:pos ];
// grab touch
return( YES );
}You could create touchable nodes and put them on the edges of your screen. I made a TouchableNode class for generic touchable stuff.
smileX
Member
@Birkemose, thanks for responding. However, what you describe is only how to set up the whole touch system, what I want to do was do "create" to areas that were touchable. I guess I could just try the position in ccTouchBegan, or is that possible?
Ex. Convert the touch position to screen coordinates -> check if the x-coordinate is <= 120 or >= 360 . (Screen width divided in 4, 120 is the first part of the screen., 360 and forward is the last.)
EDIT: Tried it out and it kinda worked. When I increase/decrease the x-coordinate by 5 is actually works, but it does not look to smooth. I tried to make it more smooth by adding a ccTime-parameter but when I press anywhere on the screen know I get the following error message: "Thread 1: Program received signal: SIGABRT".
This is my method:
-(BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event:(ccTime)time{
CGPoint touchPostion;
touchPostion = [ touch locationInView: [ touch view ] ];
touchPostion = [ [ CCDirector sharedDirector ] convertToGL:touchPostion ];
if(touchPostion.x <= 120){
character.position = ccp(character.position.x - 5*time, character.position.y);
}else if(touchPostion.x >= 360){
character.position = ccp(character.position.x + 5*time, character.position.y);
}
return YES;
}@smileX
Yeah, the easy way ( before you throw yourself into creating touchable sprites or sublayers ), is simply to use the converted pos, and do a simple position check.
ex
-( EDGE_TOUCHED )edgeTouched:( CGPoint )pos {
if ( pos.x < X_LOWER_THRESHOLD ) return( EDGE_TOUCHED_LEFT );
// etc etc
}As I read it. Game in landscape mode. If you touch left side of screen, the character moves left, and vice versa.
Notes would be.
Lose the hardcoding.
#define TOUCH_THRESHOLD_LEFT 120
#define TOUCH_THRESHOLD_RIGHT 360
#define PLAYER_MOVEMENT_GAIN 5.0fSwallowing touches, as you defined in the touch setup, means that if you return YES from ccTouchBegan, the touch will not be passed on to potential other touch delegates. So you should only return YES if you "use" the touch, otherwise you should return NO. It will not matter now, but it will matter later, when you implement ex a HUD with it own touch delegate.
Ha! I suck at proofreading.
I normally implement a timer in a scheduler, and use that.
In you scene init
[ self schedule:@selector( update: ) ];Then implement
-( void )update:( ccTime )dt {
playerTimer += dt;
}How you use the timer, is of course dependent on what you are trying to achieve.
smileX
Member
@Birkemose
Well, not the moment, but thanks for pointing that out! The only problem now is my gameTime variable stays at 0. (I´m logging it).
In my init
[self schedule:@selector(updateTime:)];And the implementation
-(void) updateTime:(ccTime)dt{
gameTime += dt;
NSLog(@"The gameTime is %i", gameTime);
}I know I´m a pain in the as*, but coming from ActionScript 3.0 so all of this is kinda new, but your help is pure gold mate!
smileX
Member
@Birkemose
Thank you once again Mother Theresa =)
So, anyway, I took your advice and altered my code so my characters position now updates within the updateTime function, two booleans controls the direction.
The whole coordinate calculations takes place in my ccTouchBegan-method, which means my character always will move on direction. (At least one boolean will always be true). Is their another method, like ccTouchHold, so the boolean will only be true aslong as the player actually touches the screen?
If you want to, you can just ignore me and take the rest of the day of =)
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