cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   julesv
   Member

   How could I make it so my program returns the GID of the tile I just touched on? I loaded my level1 tiled map through it's enum tag thing. Then I tired in despair something like this:
   

   - (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
   
   	UITouch *touch = [touches anyObject];
   	CGPoint point = [touch locationInView:[touch view]];
   	point = [[CCDirector sharedDirector] convertToGL:point];
   
   	CCNode *level1temp = [self getChildByTag:kTagLevel1];
   
   	[level1temp setTileGID:1  at:ccp(touch.x,touch.y)];
   
   }

   Thanks for your help.

   Posted 1 year ago #
2. 

   julesv
   Member

   No one?

   Posted 1 year ago #
3. 

   Questor
   Member

   julesv,

   I am not sure of the exact answer, as I don't know the size of your tiles, but first thing to remember is that the point of touch must be divided by the height and width of your tile (since tilemap coords for get/set GID methods.

   So assuming your tiles were 32x32 pixels, you would do something like:

   [level1temp setTileGID:1 at:ccp(touch.x/PTM_RATIO,touch.y/PTM_RATIO)];

   Make sure to start out with a simple tilemap, something that has just a few different tiles, otherwise you are making it alot harder on yourself to debug. Once you know how to set/get one tile, doing anywhere/everywhere is alot easier.

   Hope this helps,
   Q

   Posted 1 year ago #
4. 

   Questor
   Member

   julesv,

   I am not sure of the exact answer, as I don't know the size of your tiles, but first thing to remember is that the point of touch must be divided by the height and width of your tile (since tilemap coords for get/set GID methods are in tile units, while the screen is in pixels).

   So assuming your tiles were 32x32 pixels, you would do something like:

   #define PTM_RATIO 32
   [level1temp setTileGID:1  at:ccp(touch.x/PTM_RATIO,touch.y/PTM_RATIO)];

   Make sure to start out with a simple tilemap, something that has just a few different tiles, otherwise you are making it alot harder on yourself to debug. Once you know how to set/get one tile, doing anywhere/everywhere is alot easier.

   Hope this helps,
   Q

   UPDATE:
   Also take a look at this thread, a few posts down I list some code that will traverse an entire tilemap. Just throw in some CCLOG statements in the loop to see which tile is where... then you will know the coords for setting them as well:
   http://www.cocos2d-iphone.org/forum/topic/3099

   Posted 1 year ago #
5. 

   julesv
   Member

   Help anyone. I've been messing with this for ages, but I get a CALC_EXC on debug when [level1 setTileGID:1 at:ccp(touch.x/PTM_RATIO, touch.y/PTM_RATIO)]; runs I have no idea why this is happening. COuld anyone help me. My program also had problems with [self isTouchEnabled:YES]; For some reason, and I deleted it. The warning I get on the [level1 setTileGID:1 at:ccp(touch.x/PTM_RATIO, touch.y/PTM_RATIO)]; is 'CCTMXTiledMap' may not respond to '-setTileGID:at:'. PTM_RATIO is 40, and is my constant defined earlier.

   Posted 1 year ago #
6. 

   patrickC
   Member

   As I mentioned in the OTHER thread that you opened about the same topic, read the documentation.
   It's all written there.

   The "setTileGID:at:" method is part of a CCTMXLayer not the CCTMXTiledMap class.
   So you have to access the layer on which you're changing the tile.

   Documentation:
   http://www.cocos2d-iphone.org/api-ref/latest-stable/

   Posted 1 year ago #

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