render is fixed (tile breakage not tested as loading items are still wip); air tile no longer has tilenum of 0

assets/tiling.frag

@@ -76,7 +76,7 @@ void main() {
     int tile = getTileFromColor(tileFromMap);
     int breakage = getBreakageFromColor(tileFromMap);
     ivec2 tileXY = getTileXY(tile);
-    ivec2 breakageXY = getTileXY(breakage + 5); // +5 is hard-coded constant that depends on the atlas
+    ivec2 breakageXY = getTileXY(breakage + 5); // +5 is hard-coded constant that depends on the contents of the atlas
 
     // calculate the UV coord value for texture sampling //
 

src/net/torvald/terrarum/gameworld/GameWorld.kt

@@ -152,6 +152,9 @@ open class GameWorld : Disposable {
             tileNumberToNameMap[it.value.tileNumber] = it.key
             tileNameToNumberMap[it.key] = it.value.tileNumber
         }
+
+        // AN EXCEPTIONAL TERM: tilenum 0 is always redirected to Air tile, even if the tilenum for actual Air tile is not zero
+        tileNumberToNameMap[0] = Block.AIR
     }
 
     /**
@@ -201,6 +204,9 @@ open class GameWorld : Disposable {
                 // TODO rename wire map
             }
         }
+
+        // AN EXCEPTIONAL TERM: tilenum 0 is always redirected to Air tile, even if the tilenum for actual Air tile is not zero
+        tileNumberToNameMap[0] = Block.AIR
     }
 
     /**

src/net/torvald/terrarum/worlddrawer/CreateTileAtlas.kt

@@ -60,7 +60,7 @@ object CreateTileAtlas {
 
     // 16 tiles are reserved for internal use: solid black, solid white, breakage stages.
     // 0th tile is complete transparent tile and is also a BlockID of zero: air.
-    private var atlasCursor = 0
+    private var atlasCursor = 64 // 64 predefined tiles. The normal blocks (e.g. Air) should start from this number
     private val atlasInit = "./assets/graphics/blocks/init.tga"
     private var itemSheetCursor = 16
 
@@ -86,6 +86,14 @@ object CreateTileAtlas {
         atlasFluid.blending = Pixmap.Blending.None
         atlasGlow.blending = Pixmap.Blending.None
 
+        // populate the atlantes with atlasInit
+        // this just directly copies the image to the atlantes :p
+        val initPixmap = Pixmap(Gdx.files.internal(atlasInit))
+        atlas.drawPixmap(initPixmap, 0, 0)
+        atlasAutumn.drawPixmap(initPixmap, 0, 0)
+        atlasWinter.drawPixmap(initPixmap, 0, 0)
+        atlasSpring.drawPixmap(initPixmap, 0, 0)
+
         // get all the files applicable
         // first, get all the '/blocks' directory, and add all the files, regardless of their extension, to the list
         val tgaList = ArrayList<Pair<String, FileHandle>>() //Pair of <modname, filehandle>
@@ -192,6 +200,7 @@ object CreateTileAtlas {
         itemWallTexture = Texture(itemWallPixmap)
         itemTerrainPixmap.dispose()
         itemWallPixmap.dispose()
+        initPixmap.dispose()
 
         initialised = true
     } }