学步园

When using TileMapAtlas the tiles will always have Anti-Aliasing active,
so if you don't remove the AA before using the Atlas you'll see lines
between each tile. In order to avoid this you have to remove the
Anti-Aliasing from that texture.

Code for cocos2d < 0.8.0

// Aliased images

[
Texture2D saveTexParameters]
;
[
Texture2D setAliasTexParameters]
;

	TileMapAtlas *
tilemap =
 [
TileMapAtlas tileMapAtlasWithTileFile:
@
"tiles.png"
 mapFile:
@
"levelmap.tga"
 tileWidth:
16
 tileHeight:
16
]
;
[
Texture2D restoreTexParameters]
;

Code for 0.8.0 ⇐ cocos2d < 0.99

        TileMapAtlas *
tilemap =
 [
TileMapAtlas tileMapAtlasWithTileFile:
@
"tiles.png"
 mapFile:
@
"levelmap.tga"
 tileWidth:
16
 tileHeight:
16
]
;
// Aliased images

[
tilemap.textureAtlas.texture setAliasTexParameters]
;

Code for cocos2d >= v0.99

        CCTileMapAtlas *
tilemap =
 [
CCTileMapAtlas tileMapAtlasWithTileFile:
@
"tiles.png"
 mapFile:
@
"levelmap.tga"
 tileWidth:
16
 tileHeight:
16
]
;
// Aliased images

[
tilemap.textureAtlas.texture setAliasTexParameters]
;

When using TMX Tile Maps, you may notice strange behaviors such as gaps
or artifacts on the map. To resolve it, try the following:

• Set 2D Projection in the Director
• Set Alias Parameter for the Tile map (instead of Anti-Alias)
• If you're updating the camera center/eye, try round your input to an integer instead of passing in a float
• Disabling Render Subpixel may work as well (Found in: /cocos2d Sources/cocos2d/ccConfig.h)

Quick hack to add Hex tiles (0.6.3 / 0.7)

• Edit updateAtlasValueAt (0.7) or updateAltasValues (0.6.3) in TileMapAtlas.m to include the following

float
 offsetX =
 x *
(
 itemWidth *
0.5f +
 (
(
int
)
(
itemWidth /
 4.0f)
)
)
;
float
 offsetY =
  y *
 itemHeight;

 
if
 (
x %
 2
)

{


    offsetY =
 y *
 itemHeight +
 0.5f *
 itemHeight;
}


 

vertex.bl_x =
 offsetX;                    // A - x


vertex.bl_y =
 offsetY;                    // A - y


vertex.bl_z =
 0.0f;                        // A - z


vertex.br_x =
 itemWidth +
 offsetX;        // B - x


vertex.br_y =
 offsetY;                    // B - y


vertex.br_z =
 0.0f;                        // B - z


vertex.tl_x =
 offsetX;                    // C - x


vertex.tl_y =
 itemHeight +
 offsetY;        // C - y


vertex.tl_z =
 0.0f;                                 // C - z


vertex.tr_x =
 itemWidth +
 offsetX;        // D - x


vertex.tr_y =
 itemHeight +
 offsetY;        // D - y


vertex.tr_z =
 0.0f;                                // D - z


From：http://www.cocos2d-iphone.org/wiki/doku.php/tips:tilemapgaps