Sparrow Forum

1. 

   ibii
   Member

   Hi All,

   I'm still fighting with this solution to add tiles to an isometric grid.

   carried over from this thread;
   http://forum.sparrow-framework.org/topic/isometric-grid-based-on-as3

   I have the following solution which works to my knowledge but seems I can't find a way to actually add the elements of the array to the stage.

   [self addChild [terrainArray objectAtIndex:i]]

   Any help would be appreciated as I'm stuck.........

   //--------------------------------------
   //2d iso test
   //--------------------------------------

   SPImage *tile_img;//our tile image
   int columns = 10;//columns
   int rows = 10;//rows

   NSMutableArray *terrainArray = [[NSMutableArray alloc] init]; //create the top level array(which will hold arrays of sprites)

   int i, j;

   //-----------------------
   //Columns
   //-----------------------
   for(i = 0; i < columns; i++)
   {

   NSMutableArray *items = [[NSMutableArray alloc] init]; //create the second level array that will hold the actual sprites

   for(j = 0; j < rows; j++)
   {
   //--------------------
   //create a holder sprite
   //--------------------
   SPSprite *mySprite;
   mySprite = [SPSprite sprite];

   //--------------------
   //load a tile image
   //--------------------
   tile_img = [SPImage imageWithContentsOfFile:@"map_tile.png"];

   //--------------------
   //add tile to sprite
   //--------------------
   [mySprite addChild:tile_img];

   //--------------------
   //add sprite to array items
   //--------------------
   [items addObject:mySprite];

   [tile_img release];
   }

   [terrainArray addObject:items];
   [items release];

   //SPSprite *holder = [terrainArray objectAtIndex:i];
   //[self addChild:[terrainArray objectAtIndex:i]];

   printf("object = %d\n",[terrainArray objectAtIndex:i]);
   printf("\n");

   }
   }

   Posted 1 year ago #
2. 

   ibii
   Member

   Actually this following code works, only I can't seem to retrieve the sprite array in the terrainArray to add to stage.

   Any ideas??????

   NSMutableArray *terrainArray = [[NSMutableArray alloc] init];
   int columns = 4;//columns
   int rows = 4;//rows
   int i, j;

   //------------------------------------
   //columns
   //------------------------------------
   for(i = 0; i < columns; i = i++)
   {
   //create array to store column row objects
   NSMutableArray *items = [[NSMutableArray alloc] init]; //create the second level array that will hold the actual sprites

   //-------------------
   //rows
   //-------------------
   for(j = 0; j < rows; j = j++)

   [items addObject:[[Iso_Tile alloc] initWithX:(j - i) * 35 andY:(j + i) * (35 / 2)]];
   [terrainArray addObject:items];

   //here's where I get stuck, need to access array object like terrainArray[i][j] and then add to stage.

   SPSprite *anObject = [terrainArray objectAtIndex:i];
   NSLog(@"Object: %@", anObject); //traces out the columns and rows

   //[self addChild:anObject];

   }
   //
   }

   The following NSLog outputs

   2010-10-10 15:43:40.109 base_ipad[3839:207] Object Array List : (
   <Iso_Tile: 0x4a02ba0>,
   <Iso_Tile: 0x4a36b60>,
   <Iso_Tile: 0x4a38b00>,
   <Iso_Tile: 0x4a3d6f0>
   )
   2010-10-10 15:43:40.139 base_ipad[3839:207] Object Array List : (
   <Iso_Tile: 0x4a4bdd0>,
   <Iso_Tile: 0x4a4de50>,
   <Iso_Tile: 0x4a537e0>,
   <Iso_Tile: 0x4c3fc80>
   )
   2010-10-10 15:43:40.155 base_ipad[3839:207] Object Array List : (
   <Iso_Tile: 0x4c406f0>,
   <Iso_Tile: 0x4c411c0>,
   <Iso_Tile: 0x4c42070>,
   <Iso_Tile: 0x4c42b60>
   )
   2010-10-10 15:43:40.176 base_ipad[3839:207] Object Array List : (
   <Iso_Tile: 0x4a54490>,
   <Iso_Tile: 0x4a55120>,
   <Iso_Tile: 0x4c439e0>,
   <Iso_Tile: 0x4c44510>
   )

   Posted 1 year ago #
3. 

   ibii
   Member

   O.k found a solution , so answered my own question, But will just post the results incase someone else is chasing this.
   It draws tiles to an isometric grid.........

   For some reason I had to use 2x2 sets of loops, tried it with just 1x2 but throws errors strangely enough, if anyone has some suggestions or modifications here, please let me know.....

   //code::::::::

   NSMutableArray *terrainArray = [[NSMutableArray alloc] init];
   NSMutableArray *combineArray = [[NSMutableArray alloc] init];
   int columns = 4;//columns
   int rows = 4;//rows
   int i,j,k,l;//2x2 loops

   //------------------------------------
   //columns
   //------------------------------------
   for(i = 0; i < columns; i++)
   {
   //create array to store column row objects
   NSMutableArray *items = [[NSMutableArray alloc] init]; //create the second level array that will hold the actual sprites

   //-------------------
   //rows
   //-------------------
   for(j = 0; j < rows; j++)

   [items addObject:[[Iso_Tile alloc] initWithX:(j - i) * 35 andY:(j + i) * (35 / 2)]];
   [terrainArray addObject:items];

   //-------------------
   //Clean up
   //-------------------
   [items release];
   }

   //--------------------------------------------------------------------
   //Second set - don't know why it throws errors in the first set doing the same as below
   //but works no issues with this second set.....??
   //-------------------------------------------------------------------
   for(k = 0; k < columns; k++)
   {
   for(l = 0; l < rows; l++)
   {
   NSLog(@"Object Array List 1: %@",[[terrainArray objectAtIndex:k] objectAtIndex:l]);
   NSLog(@"//----------------------------------------------------------------------//");

   SPSprite *Object = [[terrainArray objectAtIndex:k] objectAtIndex:l];
   [self addChild:Object]
   }
   }
   }

   Posted 1 year ago #
4. 

   Daniel
   Primary Feather

   Hi Ibii,

   great that you worked it out! That you had to use 2 loops might have to do something with the missing curly braces in your inner loop. Here's how it should work, if I'm not mistaken. I also added a line that releases the Iso_Tile after you added it to the error; otherwise you'll create a memory leak.

   NSMutableArray *terrainArray = [[NSMutableArray alloc] init];
   
   for(i = 0; i < columns; i++)
   {
     NSMutableArray *items = [[NSMutableArray alloc] init];
   
     for(j = 0; j < rows; j++)
     {
       Iso_Tile *tile = [[Iso_Tile alloc] initWithX:(j - i) * 35 andY:(j + i) * (35 / 2)];
       [items addObject:tile];
       [self addChild:tile];
       [tile release];
     }
   
     [terrainArray addObject:items];
     [items release];
   }

   Posted 1 year ago #
5. 

   ibii
   Member

   Great thanks Daniel, Yes I tried the curly bracket but seems it didn't work either, very strange that it wasn't playing ball at all.
   But yes I'm sure its something simple I'm missing there, not understanding entirely how things are fitting together.

   Will give that a try, see how it goes, and thanks for spotting that memory leak, save some headaches...

   Posted 1 year ago #
6. 

   ibii
   Member

   Yes, was getting a bit confused there, but the following solutions works...

   This works
   //------------------------------------
   //columns
   //------------------------------------
   NSMutableArray *terrainArray = [[NSMutableArray alloc] init];

   for(i = 0; i < columns; i++)
   {
   NSMutableArray *items = [[NSMutableArray alloc] init];

   for(j = 0; j < rows; j++)
   {
   Iso_Tile *tile = [[Iso_Tile alloc] initWithX:(j - i) * 35 andY:(j + i) * (35 / 2)];
   [items addObject:tile];
   [self addChild:tile];
   [tile release];

   [terrainArray addObject:items];
   [items release];

   //-----------------------------
   SPSprite *Object = [[terrainArray objectAtIndex:i] objectAtIndex:j];
   [grid_holder addChild:Object];
   }
   }

   Posted 1 year ago #

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