add json map and render it

Main.hx

@@ -1,3 +1,5 @@
+import hxd.res.TiledMap;
+
 class Main extends hxd.App {
   var wizard: h2d.Object;
   var timer: Float = 0.0;
@@ -17,12 +19,54 @@ class Main extends hxd.App {
     myscene.addChild(toSprite(rlTiles[DirtPathRL.Middle], 0, 16));
     myscene.addChild(toSprite(rlTiles[DirtPathRL.Bottom], 0, 32));
 
+    var mapJson = hxd.Res.dungeon_crawler_v2_tmj.entry.getText();
+
+    // parse Tiled json file
+    var mapData: TiledMapData = haxe.Json.parse(mapJson);
+
+    // get tile image (tiles.png) from resources
+    var tileImage = hxd.Res.tinydungeon.toTile();
+
+    // create a TileGroup for fast tile rendering, attach to 2d scene
+    var group = new h2d.TileGroup(tileImage, myscene);
+
+    var tw = 16;
+    var th = 16;
+
+    var mw = mapData.width;
+    var mh = mapData.height;
+
+    var margin = 1;
+
+    // make sub tiles from tile
+    var tiles = [
+      for(y in 0 ... Std.int((tileImage.height + margin) / (th + margin)))
+        for(x in 0 ... Std.int((tileImage.width + margin) / (tw + margin)))
+          tileImage.sub(x * (tw + margin), y * (th + margin), tw, th)
+    ];
+
+    // iterate on all layers
+    for(layer in mapData.layers) {
+      // iterate on x and y
+      for(y in 0 ... mh) for (x in 0 ... mw) {
+      if (layer?.data == null) continue;
+        // get the tile id at the current position 
+        var tid = layer.data[x + y * mw];
+        if (tid != 0) { // skip transparent tiles
+          // add a tile to the TileGroup
+          group.add(x * tw, y * th, tiles[tid - 1]);
+        }
+      }
+    }
+
+/*
     var tdTiles = tinydungeonTiles();
 
     wizard = toSprite(tdTiles[CharacterTD.Wizard]);
 
     myscene.addChild(wizard);
     myscene.addChild(toSprite(tdTiles[CharacterTD.VillagerOne], 16, 16));
+    */
   }
 
   override private function update(dt: Float) {

Util.hx

@@ -7,10 +7,6 @@ enum abstract DirtPathRL (Int) to Int {
   var Bottom = 182;
 }
 
-enum abstract DirectionsPermissable (Int) to Int {
-  var 153 = 16;
-}
-
 // tinydungeon
 enum abstract CharacterTD (Int) to Int {
   var Wizard = 84;