diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3b2875c..1ce4118 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -51,10 +51,11 @@ set(SOURCES
 )
 # Shared assets, fx-9860G-only assets and fx-CG-50-only assets
 set(ASSETS
-  assets/level0.json
-  assets/level1.json
-  assets/level2.json
-  assets/level3.json
+  #assets/level0.json
+  #assets/level1.json
+  #assets/level2.json
+  #assets/level3.json
+  assets/WorldRPG.world
   # ...
 )
 
@@ -89,7 +90,7 @@ set(ASSETS_fx_2b
   # ...
 )
 
-fxconv_declare_assets(${ASSETS} ${ASSETS_fx}  ${ASSETS_cg} ${ASSETS_fx_1b} ${ASSETS_fx_2b} ${ASSETS_cg_2b} ${ASSETS_cg_EGA64} WITH_METADATA)
+fxconv_declare_assets(${ASSETS} ${ASSETS_fx} ${ASSETS_cg} ${ASSETS_fx_1b} ${ASSETS_fx_2b} ${ASSETS_cg_2b} ${ASSETS_cg_EGA64} WITH_METADATA)
 
 if("${FXSDK_PLATFORM_LONG}" STREQUAL fx9860G)
   add_executable(myaddin ${SOURCES} ${ASSETS} ${ASSETS_${FXSDK_PLATFORM}} ${ASSETS_${FXSDK_PLATFORM}_${COLORMODE_fx}} )
@@ -146,4 +147,4 @@ elseif("${FXSDK_PLATFORM_LONG}" STREQUAL fxCG50)
       NAME "Col RPG EGA" ICONS assets-cg/icon-uns.png assets-cg/icon-sel.png)
   endif()
 
-endif()
\ No newline at end of file
+endif()
diff --git a/assets-cg/levels/not used anymore (backup)/tileset2b_CG.png b/assets-cg/levels/not used anymore (backup)/tileset2b_CG.png
deleted file mode 100644
index 2e6b6e6..0000000
Binary files a/assets-cg/levels/not used anymore (backup)/tileset2b_CG.png and /dev/null differ
diff --git a/assets-cg/levels/not used anymore (backup)/tilesetEGA64_CG_bak.png b/assets-cg/levels/not used anymore (backup)/tilesetEGA64_CG_bak.png
deleted file mode 100644
index 5fd8503..0000000
Binary files a/assets-cg/levels/not used anymore (backup)/tilesetEGA64_CG_bak.png and /dev/null differ
diff --git a/assets/converters.py b/assets/converters.py
index 7a9cb8b..bdab622 100644
--- a/assets/converters.py
+++ b/assets/converters.py
@@ -3,15 +3,80 @@ import fxconv
 import json
 import pathlib
 import csv
+import os
 
 def convert(input, output, params, target):
 	if params["custom-type"] == "map":
-		convert_map(input, output, params, target)
+		#convert_map(input, output, params, target)
+		#return 0
+		return 1
+	elif params["custom-type"] == "world":
+		convert_world(input, output, params, target)
 		return 0
 	else:
 		return 1
 
+
+
+def convert_world(input, output, params, target):
+	print( "WE ARE COMPUTING THE WORLD", input )
+
+	data = json.load(open(input, "r"))
+	nbMaps = ["fileName" in i for i in data["maps"]].count(True)
+	print( "We have to treat ", nbMaps, " maps")
+	print( "So let's go ... ")
+	
+	structWorld = fxconv.Structure()
+	
+	for i in range(nbMaps):
+		nameMap = data["maps"][i]["fileName"].replace(".tmx","")
+		nameMapFree = nameMap.split("/")[-1]
+		#count the number of "back" (cd ..) to locate the map on the computer
+		nbRetour = nameMap.count("..")+1
+		#create the map absolute path 		
+	
+		
+		nameTMX = "/".join(input.split("/")[:-nbRetour]) + "/" + nameMap + ".tmx"
+		nameJSON = "/".join(input.split("/")[:-nbRetour]) + "/" + nameMap + ".json"
+		
+		commandline = 'tiled --export-map json ' + nameTMX + ' ' + nameJSON
+		print( "TILED COMMAND LINE FOR MAPS : ", commandline )
+		os.system( commandline )
+		
+
+		mapPath = "/".join(input.split("/")[:-nbRetour]) + "/" + nameMap + ".json"		
+		print("Map ", i , " name : ", mapPath )	
+		
+
+
+		xmin = data["maps"][i]["x"]
+		print( "xmin = ", xmin )
+		structWorld += fxconv.u16( xmin )	#xmin parameter
+
+		ymin = data["maps"][i]["y"]
+		print( "ymin = ", ymin )
+		structWorld += fxconv.u16( ymin  )	#ymin parameter
+
+		xmax = data["maps"][i]["x"] + data["maps"][i]["width"]
+		print( "xmax = ", xmax )
+		structWorld += fxconv.u16( xmax  )	#xmax parameter
+
+		ymax = data["maps"][i]["y"] + data["maps"][i]["height"]
+		print( "ymax = ", ymax )
+		structWorld += fxconv.u16( ymax )	#ymax parameter
+
+		map = convert_map( mapPath, output, params, target )
+		print( "Map = ", map )
+		structWorld += map
+
+	#generate !
+	fxconv.elf(structWorld, output, "_" + params["name"], **target)
+
+
+
+
 def convert_map(input, output, params, target):
+	print( "WE ARE COMPUTING THE MAP : ", input )
 	data = json.load(open(input, "r"))
 
 	#find the tileset in use. it's a relative path (like ../tileset.tsx)
@@ -22,9 +87,14 @@ def convert_map(input, output, params, target):
 	#count the number of "back" (cd ..) to locate the tileset on the computer
 	nbRetour = nameTileset.count("..")+1
 	#create the tileset absolute path 
-	tilesetPath = "/".join(input.split("/")[:-nbRetour]) + "/" + nameTileset + ".json"
+	tilesetTSX  = "/".join(input.split("/")[:-nbRetour]) + "/" + nameTileset + ".tsx"
+	tilesetJSON = "/".join(input.split("/")[:-nbRetour]) + "/" + nameTileset + ".json"
+	
+	commandline = 'tiled --export-tileset json ' + tilesetTSX + ' ' + tilesetJSON
+	print( "TILED COMMAND LINE FOR TILESET : ", commandline )
+	os.system( commandline )
 
-	tileset = open(tilesetPath, "r")
+	tileset = open(tilesetJSON, "r")
 	data_tileset = json.load(tileset)
 	tileset_size = data_tileset.get("columns")
 	tileset.close()
@@ -45,7 +115,6 @@ def convert_map(input, output, params, target):
 	layer_foreground = 0
 	layer_background = 0
 
-
 	#create the structure of the map
 	structMap = fxconv.Structure()
 
@@ -64,7 +133,6 @@ def convert_map(input, output, params, target):
 		elif i==nbTilelayer:
 			printf( "ERROR : No Walkable layer data !!!" )
 
-
 	walk_data = bytes()
 	layer = data["layers"][layer_walkable]
 	for tile in layer["data"]:
@@ -87,7 +155,6 @@ def convert_map(input, output, params, target):
 		elif i==nbTilelayer:
 			printf( "ERROR : No Background layer data !!!" )
 
-
 	layer_data = bytes()
 	layer = data["layers"][layer_background]
 	for tile in layer["data"]:
@@ -95,7 +162,6 @@ def convert_map(input, output, params, target):
 	structMap += fxconv.ptr(layer_data)
 
 
-
 	#import the foreground layer of the map
 	for i in range(nbTilelayer+1):
 		datavalid = data["layers"][i]
@@ -106,7 +172,6 @@ def convert_map(input, output, params, target):
 		elif i==nbTilelayer:
 			printf( "ERROR : No Foreground layer data !!!" )
 
-
 	layer_data = bytes()
 	layer = data["layers"][layer_foreground]
 	for tile in layer["data"]:
@@ -114,9 +179,8 @@ def convert_map(input, output, params, target):
 	structMap += fxconv.ptr(layer_data)
 
 
-
-
-
 	#generate !
-	fxconv.elf(structMap, output, "_" + params["name"], **target)
+	#fxconv.elf(structMap, output, "_" + params["name"], **target)
+
+	return structMap
 
diff --git a/assets/fxconv-metadata.txt b/assets/fxconv-metadata.txt
index ddb88cb..77b9eb0 100644
--- a/assets/fxconv-metadata.txt
+++ b/assets/fxconv-metadata.txt
@@ -1,3 +1,8 @@
-*.json:
-  custom-type: map
-  name_regex: (.*)\.json map_\1
+# *.json:
+#   custom-type: map
+#   name_regex: (.*)\.json map_\1
+
+
+*.world:
+  custom-type: world
+  name: worldRPG
diff --git a/clean b/clean
new file mode 100755
index 0000000..6cf836c
--- /dev/null
+++ b/clean
@@ -0,0 +1,8 @@
+cd assets
+rm -f *.json
+cd ..
+rm -r build-cg
+rm -r build-fx
+rm *.g1a
+rm *.g3a
+
diff --git a/src/main.c b/src/main.c
index cc72975..2ff45f5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -21,14 +21,20 @@
 
 #include "game.h"
 #include "mapdata.h"
+#include "mapstruct.h"
 
 #include "dialogs.h"
 
 extern bopti_image_t player_face_img;
 
+extern World worldRPG[];
+
+
+
+
 /* Game data (defined in "game.h")*/
 Game game = {
-    &map_level0,
+    &worldRPG[0].mapdata,
     {10*PXSIZE, 48*PXSIZE, 0, 0, 100, SPEED},
     false, false, false, 0
 };
@@ -99,10 +105,13 @@ int main(void) {
         dgray(DGRAY_ON);
     #endif
 
+    /*
     showtext_dialog(&game, &player_face_img, "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed non risus. Suspendisse lectus tortor, dignissim sit amet.", true, true);
     int in = showtext_dialog_ask(&game, &player_face_img, "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed non risus. Suspendisse lectus tortor, dignissim sit amet.", true, false, "Lorem\0ipsum", 2, 0);
     if(in) showtext_dialog(&game, &player_face_img, "You choosed ipsum", false, true);
     else showtext_dialog(&game, &player_face_img, "You choosed Lorem", false, true);
+    */
+
     do{
         /* clear screen */
         dclear(C_WHITE);
diff --git a/src/mapdata.h b/src/mapdata.h
index e1ae6a5..5d3a221 100644
--- a/src/mapdata.h
+++ b/src/mapdata.h
@@ -1,10 +1,10 @@
 #ifndef MAPDATA_H
 #define MAPDATA_H
 
-extern Map map_level0;
-extern Map map_level1;
-extern Map map_level2;
-extern Map map_level3;
+#include <stdint.h>
+#include "mapstruct.h"
+
+extern World worldRPG[];
 
 #endif
 
diff --git a/src/mapstruct.h b/src/mapstruct.h
index 7ac7d9a..c80bf30 100644
--- a/src/mapstruct.h
+++ b/src/mapstruct.h
@@ -26,21 +26,16 @@ typedef struct {
 } Map;
 
 
-
 typedef struct {
-
-    /* numberof maps in the world */
-    uint16_t nbmaps;
-
     /* table of coordinates for each map, each is a table of nbmaps elements */
     /* area of map N is given by (xmin[N], ymin[N]) --> (xmax[N], ymax[N]) */
-    uint16_t *xmin;
-    uint16_t *ymin;
-    uint16_t *xmax;
-    uint16_t *ymax;
+    uint16_t xmin;
+    uint16_t ymin;
+    uint16_t xmax;
+    uint16_t ymax;
 
     /* pointer to the currentmap*/
-    Map *currentmap; 
+    Map mapdata; 
 
 } World;
 
diff --git a/src/player.c b/src/player.c
index b466f56..78330fa 100644
--- a/src/player.c
+++ b/src/player.c
@@ -28,7 +28,7 @@ extern bopti_image_t demo_player_img;
 
 void player_draw(Player *player) {
     dimage(player->px-P_WIDTH/2, player->py-P_HEIGHT/2, &demo_player_img);
-    dprint( 10, 10, C_RED, "X= %d - Y= %d", player->x, player->y );
+    //dprint( 10, 10, C_RED, "X= %d - Y= %d", player->x, player->y );
 }
 
 void player_move(Map *map_level, Player *player, Direction direction) {