diff --git a/CMakeLists.txt b/CMakeLists.txt
index b641aaf..d8c8bba 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,8 +12,8 @@ find_package(Gint 2.9 REQUIRED)
 find_package(LibProf 2.4 REQUIRED)
 
 #set the color mode either to 1b or 2b
-set(COLORMODE_fx 2b)
-#set the color mode either to 2b or EGA64
+set(COLORMODE_fx 1b)
+#set the color mode either to 1b, 2b or EGA64
 set(COLORMODE_cg EGA64)
 
 fxconv_declare_converters(assets/converters.py)
@@ -35,10 +35,19 @@ set(ASSETS
 
 set(ASSETS_cg
   assets-cg/demo_player.png
+  assets-cg/demo_PNJ.png
+  assets-cg/SignAction.png
+  assets-cg/NPC_Icon.png
+  assets-cg/SGN_Icon.png
+  assets-cg/INFO_Icon.png
   assets-cg/player_face.png
   assets-cg/font.png
 )
 
+set(ASSETS_cg_1b
+  assets-cg/levels/tileset1b_CG.png
+)
+
 set(ASSETS_cg_2b
   assets-cg/levels/tileset2b_CG.png
 )
@@ -49,6 +58,11 @@ set(ASSETS_cg_EGA64
 
 set(ASSETS_fx
   assets-fx/demo_player.png
+  assets-fx/demo_PNJ.png
+  assets-fx/SignAction.png
+  assets-fx/NPC_Icon.png
+  assets-fx/SGN_Icon.png
+  assets-fx/INFO_Icon.png
   assets-fx/player_face.png
   assets-fx/font.png
   # ...
@@ -64,7 +78,7 @@ 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_1b} ${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}_${COLORMODE_fx}} )
@@ -83,11 +97,14 @@ if("${COLORMODE_fx}" STREQUAL 2b)
 endif()
 
 # cg colormode
+if("${COLORMODE_cg}" STREQUAL 1b)
+  target_compile_options(myaddin PRIVATE -Wall -Wextra -Os -DCOLOR1BIT)
+endif()
+
 if("${COLORMODE_cg}" STREQUAL 2b)
   target_compile_options(myaddin PRIVATE -Wall -Wextra -Os -DCOLOR2BIT)
 endif()
 
-
 if("${COLORMODE_cg}" STREQUAL EGA64)
   target_compile_options(myaddin PRIVATE -Wall -Wextra -Os -DCOLOREGA)
 endif()
@@ -111,6 +128,11 @@ if("${FXSDK_PLATFORM_LONG}" STREQUAL fx9860G)
 
 elseif("${FXSDK_PLATFORM_LONG}" STREQUAL fxCG50)
 
+  if("${COLORMODE_cg}" STREQUAL 1b)
+  generate_g3a(TARGET myaddin OUTPUT "PrjPC1b.g3a"
+    NAME "Col RPG 1bit" ICONS assets-cg/icon-uns.png assets-cg/icon-sel.png)
+  endif()
+
   if("${COLORMODE_cg}" STREQUAL 2b)
     generate_g3a(TARGET myaddin OUTPUT "PrjPC2b.g3a"
       NAME "Col RPG Grey" ICONS assets-cg/icon-uns.png assets-cg/icon-sel.png)
diff --git a/README.md b/README.md
index 76bbeeb..f4df062 100644
--- a/README.md
+++ b/README.md
@@ -4,20 +4,20 @@ Plus d'infos sur ce projet ici : [Le projet Collaboratif de PC](https://www.plan
 
 ## Avencement du projet
 
-
 A ce stade, on a déjà implémenté :
 
 - [x] Screenshots, etc. par USB
-- [x] Affichage de la map selon la position du joueur
+- [x] Affichage de la map courante selon la position du joueur
 - [x] Gestion des touches
 - [x] Gestion des collisions
+- [x] Multiple cartes avec importation automatique des fichiers `world` issus de Tiled
 - [x] Carte Multilayer (Background, Foreground + accessibilité / Dommages) avec transparence du calque Foreground
 - [x] Personnage
 - [x] Dialogues (sauts de lignes et mots plus grands que l'écran pas supportés)
 - [ ] Fontes de caractères
 - [ ] Interaction
 - [ ] NPC
-- [ ] Changement de map
+- [x] Changement de map durant le jeu
 
 ## Crédits
 
@@ -27,5 +27,5 @@ Les tiles sont issues de Game Boy Top-down RPG Fantasy Tileset (FREE)
 
 Converties en niveau de gris avec Gimp
 
-Une version 1-bit (N&B) à été réalisée par Shadow15510  
-Et une version couleur CG à été réalisée par Fcalva
+Une version 1-bit (N&B) à été réalisée par Shadow15510
+Et une version couleur CG (palette EGA64) à été réalisée par Fcalva
diff --git a/TODO.txt b/TODO.txt
new file mode 100644
index 0000000..46d445e
--- /dev/null
+++ b/TODO.txt
@@ -0,0 +1,6 @@
+[OK] - Jeu de tuile 1bit pour CG pour avoir la version 1bit vérifiable en fonctionnement dans l'émulateur de Heath
+[OK] - corriger les tuiles 1bit pour les rivières (tiles 1 2 3 et 4) avec niveaux de diphering pour tiles 1 et 3 (gris 33% et 66%)
+[OK] - ajouter face pour dialogue pour PNJ
+[OK] - ajouter indicateur visuel pour action joueur quand on est proche d'un PNJ ou d'un panneau
+
+- faire des fonts lisibles avec le set `print` disponible intégralement
\ No newline at end of file
diff --git a/assets-cg/INFO_Icon.png b/assets-cg/INFO_Icon.png
new file mode 100644
index 0000000..f07aa4e
Binary files /dev/null and b/assets-cg/INFO_Icon.png differ
diff --git a/assets-cg/NPC_Icon.png b/assets-cg/NPC_Icon.png
new file mode 100644
index 0000000..60597e5
Binary files /dev/null and b/assets-cg/NPC_Icon.png differ
diff --git a/assets-cg/SGN_Icon.png b/assets-cg/SGN_Icon.png
new file mode 100644
index 0000000..2659532
Binary files /dev/null and b/assets-cg/SGN_Icon.png differ
diff --git a/assets-cg/SignAction.png b/assets-cg/SignAction.png
new file mode 100644
index 0000000..891b824
Binary files /dev/null and b/assets-cg/SignAction.png differ
diff --git a/assets-cg/demo_PNJ.png b/assets-cg/demo_PNJ.png
new file mode 100644
index 0000000..f776fdc
Binary files /dev/null and b/assets-cg/demo_PNJ.png differ
diff --git a/assets-cg/fxconv-metadata.txt b/assets-cg/fxconv-metadata.txt
index 2d52907..9b21fe9 100644
--- a/assets-cg/fxconv-metadata.txt
+++ b/assets-cg/fxconv-metadata.txt
@@ -2,10 +2,30 @@ demo_player.png:
   type: bopti-image
   name: demo_player_img
 
+demo_PNJ.png:
+  type: bopti-image
+  name: demo_PNJ_img
+
 player_face.png:
   type: bopti-image
   name: player_face_img
 
+SignAction.png:
+  type: bopti-image
+  name: SignAction_img
+  
+INFO_Icon.png:
+  type: bopti-image
+  name: INFO_Icon_img
+  
+NPC_Icon.png:
+  type: bopti-image
+  name: NPC_Icon_img
+  
+SGN_Icon.png:
+  type: bopti-image
+  name: SGN_Icon_img
+
 font.png:
   name: fontRPG
   type: font
diff --git a/assets-cg/levels/fxconv-metadata.txt b/assets-cg/levels/fxconv-metadata.txt
index 5caafd2..de727b0 100644
--- a/assets-cg/levels/fxconv-metadata.txt
+++ b/assets-cg/levels/fxconv-metadata.txt
@@ -1,3 +1,7 @@
+tileset1b_CG.png:
+  type: bopti-image
+  name: img_tilesetnpp
+
 tileset2b_CG.png:
   type: bopti-image
   name: img_tilesetnpp
diff --git a/assets-cg/levels/tileset1b_CG.png b/assets-cg/levels/tileset1b_CG.png
new file mode 100644
index 0000000..089c983
Binary files /dev/null and b/assets-cg/levels/tileset1b_CG.png differ
diff --git a/assets-fx/INFO_Icon.png b/assets-fx/INFO_Icon.png
new file mode 100644
index 0000000..b204c4b
Binary files /dev/null and b/assets-fx/INFO_Icon.png differ
diff --git a/assets-fx/NPC_Icon.png b/assets-fx/NPC_Icon.png
new file mode 100644
index 0000000..dd61d33
Binary files /dev/null and b/assets-fx/NPC_Icon.png differ
diff --git a/assets-fx/SGN_Icon.png b/assets-fx/SGN_Icon.png
new file mode 100644
index 0000000..dc041e3
Binary files /dev/null and b/assets-fx/SGN_Icon.png differ
diff --git a/assets-fx/SignAction.png b/assets-fx/SignAction.png
new file mode 100644
index 0000000..ced6850
Binary files /dev/null and b/assets-fx/SignAction.png differ
diff --git a/assets-fx/demo_PNJ.png b/assets-fx/demo_PNJ.png
new file mode 100644
index 0000000..8198c59
Binary files /dev/null and b/assets-fx/demo_PNJ.png differ
diff --git a/assets-fx/fxconv-metadata.txt b/assets-fx/fxconv-metadata.txt
index 0bfccdd..499f659 100644
--- a/assets-fx/fxconv-metadata.txt
+++ b/assets-fx/fxconv-metadata.txt
@@ -2,10 +2,29 @@ demo_player.png:
   type: bopti-image
   name: demo_player_img
 
+demo_PNJ.png:
+  type: bopti-image
+  name: demo_PNJ_img
+
 player_face.png:
   type: bopti-image
   name: player_face_img
 
+SignAction.png:
+  type: bopti-image
+  name: SignAction_img
+
+INFO_Icon.png:
+  type: bopti-image
+  name: INFO_Icon_img
+  
+NPC_Icon.png:
+  type: bopti-image
+  name: NPC_Icon_img
+  
+SGN_Icon.png:
+  type: bopti-image
+  name: SGN_Icon_img
 
 font.png:
   name: fontRPG
diff --git a/assets-fx/levels/backup/tileset1b.png b/assets-fx/levels/backup/tileset1b.png
new file mode 100644
index 0000000..63f9c7b
Binary files /dev/null and b/assets-fx/levels/backup/tileset1b.png differ
diff --git a/assets/converters.py b/assets/converters.py
index ce4c33d..cd3b933 100644
--- a/assets/converters.py
+++ b/assets/converters.py
@@ -27,15 +27,14 @@ def convert_world(input, output, params, target):
 	print( "So let's go ... ")
 	
 	structWorld = fxconv.Structure()
-	
-	for i in range(nbMaps):
+	#structExtra = 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"
@@ -43,7 +42,6 @@ def convert_world(input, output, params, target):
 		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 )	
@@ -60,19 +58,29 @@ def convert_world(input, output, params, target):
 		ymax = data["maps"][i]["y"] + data["maps"][i]["height"]
 		print( "ymax = ", ymax )
 
-		map = convert_map( mapPath, output, params, target, xmin, ymin, xmax, ymax)
+		map = get_tile_map_data( mapPath, output, params, target, xmin, ymin, xmax, ymax)
 		print( "Map = ", map )
 		structWorld += fxconv.ptr( map )
 
+		#ext = get_extra_map_data( mapPath, output, params, target, xmin, ymin, xmax, ymax )
+		#print( "Data = ", ext )
+		#if (ext!=fxconv.u32(0)): structExtra += fxconv.ptr( ext )
+
 	structWorld += fxconv.u32(0)
 
+	#structExtra += fxconv.u32(0)
+	"""
+	#and all the extra data (PNJ, SGN, ...)
+	fxconv.elf_multi(
+        [("_" + params["varMapData"], structWorld),
+         ("_" + params["varExtraData"], structExtra)],
+        output, **target)
+	"""
 	#generate !
 	fxconv.elf(structWorld, output, "_" + params["name"], **target)
 
 
-
-
-def convert_map(input, output, params, target, xmin, ymin, xmax, ymax):
+def get_tile_map_data(input, output, params, target, xmin, ymin, xmax, ymax):
 	print( "WE ARE COMPUTING THE MAP : ", input )
 	data = json.load(open(input, "r"))
 
@@ -131,7 +139,7 @@ def convert_map(input, output, params, target, xmin, ymin, xmax, ymax):
 			print( "Walkable Tile Data in layer : ", layer_walkable)
 			break
 		elif i==nbTilelayer:
-			printf( "ERROR : No Walkable layer data !!!" )
+			print( "ERROR : No Walkable layer data !!!" )
 
 	walk_data = bytes()
 	layer = data["layers"][layer_walkable]
@@ -142,6 +150,18 @@ def convert_map(input, output, params, target, xmin, ymin, xmax, ymax):
 	structMap += fxconv.ptr(walk_data)
 
 
+	nbextra = 0
+	extradata = fxconv.Structure()
+
+	nbextra, extradata = get_extra_map_data(input, output, params, target, xmin, ymin, xmax, ymax)
+
+	if (nbextra==0):
+		structMap += fxconv.u32( 0 )
+		structMap += fxconv.u32( 0 )
+	else:
+		structMap += fxconv.u32( int(nbextra) )
+		structMap += fxconv.ptr( extradata )
+
 
 	#extraction of the data contained in the layer "Background" and "Foreground" of the map
 
@@ -154,7 +174,7 @@ def convert_map(input, output, params, target, xmin, ymin, xmax, ymax):
 			print( "Background Tile Data in layer : ", layer_background)
 			break
 		elif i==nbTilelayer:
-			printf( "ERROR : No Background layer data !!!" )
+			print( "ERROR : No Background layer data !!!" )
 
 	layer_data = bytes()
 	layer = data["layers"][layer_background]
@@ -180,8 +200,54 @@ def convert_map(input, output, params, target, xmin, ymin, xmax, ymax):
 		layer_data += fxconv.u16(tile-1)
 	structMap += fxconv.ptr(layer_data)
 
-	#generate !
-	#fxconv.elf(structMap, output, "_" + params["name"], **target)
 
 	return structMap
 
+
+
+def get_extra_map_data(input, output, params, target, xmin, ymin, xmax, ymax):
+	print( "WE ARE COMPUTING THE EXTRA DATA OF THE MAP : ", input )
+	data = json.load(open(input, "r"))
+
+
+	nblayer = ["id" in i for i in data["layers"]].count(True) - 1
+	print( "I found ", nblayer, " of extradata")
+
+	#index of the various layers (may change from one map to another)
+	layer_extradata = 0
+
+	#import the foreground layer of the map
+	for i in range(nblayer+1):
+		datavalid = data["layers"][i]
+		if datavalid["name"]=="ExtraData":
+			layer_extradata = i
+			print( "Extra Data in layer : ", layer_extradata)
+			break
+		elif i==nblayer:
+			print( "ERROR : No ExtraData layer data !!!" )
+			return 0, fxconv.u32(0)
+
+	#create the structure of the map
+	structData = fxconv.Structure()
+
+
+	nbExtraData = 0
+	layer = data["layers"][layer_extradata]
+	for i in layer["objects"]:
+		nbExtraData = nbExtraData + 1
+		x = i["x"] + xmin
+		y = i["y"] + ymin
+		nme = i["name"]
+		tpe = i["type"]
+		for j in i["properties"]:
+			stg = j[ "value" ]
+			print( "OBJECT X= ", x, " Y= ", y, "STR= ", stg )
+			print( "       Type= ", tpe, " Name= ", nme )
+				
+		structData += fxconv.u16( int(x) )
+		structData += fxconv.u16( int(y) )
+		structData += fxconv.string( nme )
+		structData += fxconv.string( tpe )
+		structData += fxconv.string( stg )
+
+	return nbExtraData, structData
diff --git a/assets/fxconv-metadata.txt b/assets/fxconv-metadata.txt
index 77b9eb0..d38d6f6 100644
--- a/assets/fxconv-metadata.txt
+++ b/assets/fxconv-metadata.txt
@@ -3,6 +3,9 @@
 #   name_regex: (.*)\.json map_\1
 
 
-*.world:
+WorldRPG.world:
   custom-type: world
+  #name: xxx                 #unused but mandatory (Do not touch)
+  #varMapData: worldRPG
+  #varExtraData: extraRPG
   name: worldRPG
diff --git a/assets/level0.tmx b/assets/level0.tmx
index 0fd416f..e6fd8eb 100644
--- a/assets/level0.tmx
+++ b/assets/level0.tmx
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<map version="1.10" tiledversion="1.10.1" orientation="orthogonal" renderorder="right-down" width="48" height="24" tilewidth="8" tileheight="8" infinite="0" nextlayerid="6" nextobjectid="4">
+<map version="1.10" tiledversion="1.10.1" orientation="orthogonal" renderorder="right-down" width="48" height="24" tilewidth="8" tileheight="8" infinite="0" nextlayerid="8" nextobjectid="9">
  <editorsettings>
   <export target="level0.json" format="json"/>
  </editorsettings>
@@ -12,7 +12,7 @@
 301,2,2,2,2,2,385,2,2,2,2,2,2,2,2,2,301,2,386,2,2,2,2,2,2,2,2,2,2,2,2,297,298,299,300,49,9,10,134,135,52,393,394,395,396,337,338,2,
 325,149,150,151,152,2,2,327,374,375,327,2,2,185,374,375,325,387,2,297,298,299,300,2,2,2,2,2,2,2,2,2,2,2,2,73,33,34,74,219,76,2,2,2,2,361,362,2,
 257,2,2,385,2,2,385,2,265,266,2,2,208,209,352,353,257,2,2,2,2,2,2,297,298,299,300,2,2,2,2,25,26,27,27,97,98,99,98,99,100,26,26,27,28,131,2,2,
-281,176,2,2,2,2,2,385,289,290,2,2,232,233,376,377,281,2,326,2,154,153,190,2,2,2,2,2,2,2,2,49,2,2,2,121,59,60,60,61,124,2,2,2,52,132,2,2,
+281,176,2,2,2,2,176,385,289,290,2,2,232,233,376,377,281,2,326,2,154,153,190,2,2,2,2,2,2,2,2,49,2,2,2,121,59,60,60,61,124,2,2,2,52,132,2,2,
 2,2,2,2,2,385,2,2,265,266,2,385,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,297,298,299,300,73,2,2,2,145,83,84,84,85,148,2,2,2,76,132,2,2,
 2,2,2,2,326,2,385,2,265,266,2,2,2,2,2,2,2,2,2,2,2,2,190,2,2,2,2,2,2,385,2,49,404,405,2,169,107,108,108,109,172,2,402,403,76,132,2,2,
 2,2,2,2,2,2,2,2,289,290,2,258,259,260,238,239,260,260,261,262,262,263,264,2,2,2,2,2,2,2,385,49,134,135,2,2,2,2,2,2,2,2,134,135,52,132,297,298,
@@ -90,10 +90,40 @@
 </data>
  </layer>
  <objectgroup id="4" name="ExtraData">
-  <object id="1" name="PlayerStart" x="52" y="44">
+  <object id="1" name="INFO3" type="INFO" x="232" y="79.75">
+   <properties>
+    <property name="dialog" value="Etrange ce coffre ouvert ..."/>
+   </properties>
    <point/>
   </object>
-  <object id="2" name="PNJ1" x="132" y="148">
+  <object id="8" name="INFO2" type="INFO" x="119.75" y="47.25">
+   <properties>
+    <property name="dialog" value="Et sa tombe est en train d'etre creusee ...^"/>
+   </properties>
+   <point/>
+  </object>
+  <object id="7" name="INFO2" type="INFO" x="52" y="44">
+   <properties>
+    <property name="dialog" value="Quelqu'un est mort ici ..."/>
+   </properties>
+   <point/>
+  </object>
+  <object id="2" name="PNJ1" type="NPC" x="252" y="164">
+   <properties>
+    <property name="dialog" value="Salut, je suis un PNJ"/>
+   </properties>
+   <point/>
+  </object>
+  <object id="4" name="SGN1" type="SGN" x="96" y="136">
+   <properties>
+    <property name="dialog" value="Indication sur le panneau. Bienvenue dans la maison du Tondu ..."/>
+   </properties>
+   <point/>
+  </object>
+  <object id="5" name="SGN2" type="SGN" x="288" y="128">
+   <properties>
+    <property name="dialog" value="Indication sur le panneau. Entree dans le Sanctuaire Maudit ..."/>
+   </properties>
    <point/>
   </object>
  </objectgroup>
diff --git a/assets/level1.tmx b/assets/level1.tmx
index 9fd42bb..20e3824 100644
--- a/assets/level1.tmx
+++ b/assets/level1.tmx
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<map version="1.10" tiledversion="1.10.1" orientation="orthogonal" renderorder="right-down" width="48" height="24" tilewidth="8" tileheight="8" infinite="0" nextlayerid="4" nextobjectid="1">
+<map version="1.10" tiledversion="1.10.1" orientation="orthogonal" renderorder="right-down" width="48" height="24" tilewidth="8" tileheight="8" infinite="0" nextlayerid="5" nextobjectid="2">
  <tileset firstgid="1" source="tilesetnpp.tsx"/>
- <tileset firstgid="411" source="Walkable.tsx"/>
+ <tileset firstgid="409" source="Walkable.tsx"/>
  <layer id="1" name="Background" width="48" height="24">
   <data encoding="csv">
 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
@@ -16,16 +16,16 @@
 2,293,1,1,1,1,1,1,1,1,1,1,1,1,272,2,2,2,2,270,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,267,268,269,1,1,1,1,1,1,1,1,1,1,
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diff --git a/assets/level2.tmx b/assets/level2.tmx
index 0d65f1f..6d1fb52 100644
--- a/assets/level2.tmx
+++ b/assets/level2.tmx
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 </data>
  </layer>
+ <objectgroup id="4" name="ExtraData">
+  <object id="1" name="INFO1" type="INFO" x="128" y="87.5">
+   <properties>
+    <property name="dialog" value="Encore une tombe ..."/>
+   </properties>
+   <point/>
+  </object>
+  <object id="2" name="INFO2" type="INFO" x="262.75" y="49">
+   <properties>
+    <property name="dialog" value="Un passage souterrain ..."/>
+   </properties>
+   <point/>
+  </object>
+  <object id="3" name="SGN1" type="SGN" x="296" y="143.75">
+   <properties>
+    <property name="dialog" value="C'est la maison du gardien du cimetiere"/>
+   </properties>
+   <point/>
+  </object>
+ </objectgroup>
 </map>
diff --git a/assets/level3.tmx b/assets/level3.tmx
index f260e15..d756a70 100644
--- a/assets/level3.tmx
+++ b/assets/level3.tmx
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<map version="1.10" tiledversion="1.10.1" orientation="orthogonal" renderorder="right-down" width="48" height="24" tilewidth="8" tileheight="8" infinite="0" nextlayerid="4" nextobjectid="1">
+<map version="1.10" tiledversion="1.10.1" orientation="orthogonal" renderorder="right-down" width="48" height="24" tilewidth="8" tileheight="8" infinite="0" nextlayerid="5" nextobjectid="6">
  <tileset firstgid="1" source="tilesetnpp.tsx"/>
- <tileset firstgid="411" source="Walkable.tsx"/>
+ <tileset firstgid="409" source="Walkable.tsx"/>
  <layer id="1" name="Background" width="48" height="24">
   <data encoding="csv">
 300,2,2,297,298,299,300,2,2,2,2,297,298,299,300,2,2,2,2,2,2,339,340,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
@@ -60,30 +60,62 @@
  </layer>
  <layer id="3" name="Walkable" width="48" height="24">
   <data encoding="csv">
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 </data>
  </layer>
+ <objectgroup id="4" name="ExtraData">
+  <object id="1" name="SGN5" type="SGN" x="224" y="183.25">
+   <properties>
+    <property name="dialog" value="Maison du Maire"/>
+   </properties>
+   <point/>
+  </object>
+  <object id="5" name="SGN4" type="SGN" x="320.5" y="159.25">
+   <properties>
+    <property name="dialog" value="Maison du Boulanger"/>
+   </properties>
+   <point/>
+  </object>
+  <object id="3" name="SGN3" type="SGN" x="184.25" y="95.75">
+   <properties>
+    <property name="dialog" value="Maison du Boucher"/>
+   </properties>
+   <point/>
+  </object>
+  <object id="4" name="SGN2" type="SGN" x="343.75" y="80">
+   <properties>
+    <property name="dialog" value="Maison du Marechal Ferrand"/>
+   </properties>
+   <point/>
+  </object>
+  <object id="2" name="SGN1" type="SGN" x="71.75" y="143.25">
+   <properties>
+    <property name="dialog" value="Maison du Fermier"/>
+   </properties>
+   <point/>
+  </object>
+ </objectgroup>
 </map>
diff --git a/clean b/clean
index 6cf836c..db7550f 100755
--- a/clean
+++ b/clean
@@ -1,7 +1,9 @@
 cd assets
 rm -f *.json
+rm -r __pycache__
 cd ..
 rm -r build-cg
+rm -r build-cg-push
 rm -r build-fx
 rm *.g1a
 rm *.g3a
diff --git a/src/game.c b/src/game.c
index 64d3765..e8e3c98 100644
--- a/src/game.c
+++ b/src/game.c
@@ -6,16 +6,61 @@
 
 #include <gint/keyboard.h>
 #include <gint/cpu.h>
+#include <gint/display.h>
+
+#include "stdlib.h"
+
+extern bopti_image_t SignAction_img;
+
+
+#define MAX_INTERACTION_DISTANCE    16
+
 
 void game_logic(Game *game) {
-    // to be done
+
+    /* we check if interactions are possible close to the player */
+    for( int i=0; i<game->map_level->nbextradata; i++ )
+    {
+        /* simple distance check along X and Y axis */
+        /* Be careful to use world coordinates, not local (i.e.map) ones */
+        if  ( (abs((int) game->player.wx - 
+                   (int) game->map_level->extradata[i].x*PXSIZE )
+                   < MAX_INTERACTION_DISTANCE*PXSIZE) 
+           && (abs((int) game->player.wy -
+                   (int) game->map_level->extradata[i].y*PXSIZE )
+                   < MAX_INTERACTION_DISTANCE*PXSIZE)  )
+        {
+            /* the player can do something */
+            game->player.canDoSomething = true;
+            /* we mark the action for futur treatment in player_action() */
+            game->player.whichAction = i;
+            return;
+        }
+    }
+    /* else nothing to be done here */
+    game->player.canDoSomething = false;
+    game->player.whichAction = -1;
+    return;
 }
 
+
+void render_indicator(Game *game)
+{
+    /* nothing to do for the player so we quit */
+    if (game->player.canDoSomething==false)
+        return;
+
+    /* else we draw a small indicator on the screen */
+    dimage(5, 5, &SignAction_img);
+}
+
+
 void draw(Game *game) {
     /* Draw everything. */
     render_map_by_layer(game, BACKGROUND);
     player_draw(game);
     render_map_by_layer(game, FOREGROUND);
+    render_indicator( game );
 }
 
 /* Key management */
@@ -47,6 +92,9 @@ void get_inputs(Game *game) {
     if(keydown(KEY_F2)) {
         game->debug_player = !game->debug_player;
     }
+    if(keydown(KEY_F3)) {
+        game->debug_extra = !game->debug_extra;
+    }
 #endif
 
 
diff --git a/src/game.h b/src/game.h
index e13f3d4..d6237e6 100644
--- a/src/game.h
+++ b/src/game.h
@@ -1,7 +1,9 @@
 #ifndef GAME_H
 #define GAME_H
 
+
 #include <gint/display.h>
+#include <stdint.h>
 
 
 
@@ -23,21 +25,46 @@ typedef enum {
 
 /* Struct that define player parameters */
 typedef struct {
-    int x, y; /* The position of the player */
-    unsigned int px, py; /* The position of the player on screen */
-    unsigned short int life; /* How many lives the player still has between 0
-                              * and 100. */
-    char speed; /* The speed of the movement of the player. */
+    int16_t x, y; /* The position of the player int the current map */
+    uint16_t px, py; /* The position of the player on screen */
+    int16_t wx, wy; /* position of the player in the world */
+    int8_t life; /* How many lives the player still has between 0 and 100. */
+    int8_t speed; /* The speed of the movement of the player. */
+
+
+    /* set to true if a action can be done in the current position of the map */
+    bool canDoSomething; 
+    /* indicates which data are relevant to the current action in the */
+    /* extradata layer of the map */
+    int32_t whichAction; 
+    /* the player is doing something */
+    bool isDoingAction;  
 } Player;
 
 
+typedef struct {
+    /* position of the item */
+    uint16_t x;
+    uint16_t y;
+    /* its name */
+    char *name;
+    /* its class (NPC, SGN, INFO, ... )*/
+    char *type;
+    /* data to be shown in the dialog*/
+    char *dialog;
+    /* ... this can be extended as per needs ... */
+} ExtraData;
+
 
 typedef struct {
     /* width, height and the number of layer of the map */
-    uint16_t w, h;
+    uint16_t w;
+    uint16_t h;
     uint16_t nblayers;
     uint16_t tileset_size;
 
+    /* world coordinates of the upper left and bootom right*/
+    /* corners of the current map to be multiplied in game by PXSIZE */
     uint16_t xmin;
     uint16_t ymin;
     uint16_t xmax;
@@ -48,10 +75,15 @@ typedef struct {
 
     /* contain the properties of the tiles */
     /* this is given by the layer Walkable of the map in Tiled */
-    
     uint8_t *walkable;
 
-    /* list of all the tiles */
+    /* structure that contains all the items on the map to interract with */
+    /* each portion of the map has its own list to avoid scrutinizing too much */
+    /* data when lloking for proximity of items */
+    uint32_t nbextradata;
+    ExtraData *extradata;
+
+    /* list of all the tiles to draw the background and the foreground layers */
     uint16_t *layers[];
 } Map;
 
@@ -74,8 +106,9 @@ typedef struct {
     long int frame_duration;
 
     /* variables used for debuging */
-    bool debug_player;
     bool debug_map;
+    bool debug_player;
+    bool debug_extra;
 } Game;
 
 /* (Mibi88) TODO: Describe what this function is doing. */
@@ -84,6 +117,10 @@ void game_logic(Game *game);
 /* Draws everything on screen. */
 void draw(Game *game);
 
+/* This render a small sign on the upper lecft corner of the screen */
+/* if the player can do an action */
+void render_indicator(Game *game);
+
 /* Handle key presses. */
 void get_inputs(Game *game);
 
diff --git a/src/main.c b/src/main.c
index 69509da..f7893c9 100644
--- a/src/main.c
+++ b/src/main.c
@@ -26,17 +26,17 @@
 
 extern bopti_image_t player_face_img;
 
-extern Map *worldRPG[];
 
+extern Map *worldRPG[];
 
 /* Game data (defined in "game.h")*/
 Game game = {
     NULL,
-    {10*PXSIZE, 48*PXSIZE, 0, 0, 100, SPEED},
+    {12*PXSIZE, 36*PXSIZE, 0, 0, 10*PXSIZE, 48*PXSIZE, 100, SPEED, false, 0, false},
     false, false, false, 0
 
     /* debug variables*/
-    , true, true
+    , false, false, false
 }; 
 
 /* screen capture management code */
@@ -108,13 +108,13 @@ 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\0Dolor", 3, 0);
     if(in==2) showtext_dialog(&game, &player_face_img, "You choosed Dolor", false, true);
     else if(in==1) 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 */
@@ -137,7 +137,13 @@ int main(void) {
             {
                 dfont( NULL );
                 drect( 5, 55,390, 75, C_WHITE );
-                dprint( 10, 60, C_BLUE, "X= %d - Y= %d", game.player.x, game.player.y );
+                dprint( 10, 60, C_BLUE, "X= %d - Y= %d / Wx= %d - Wy= %d", game.player.x, game.player.y, game.player.wx, game.player.wy );
+            }
+            if (game.debug_extra)
+            {
+                dfont( NULL );
+                for (int i=0; i<game.map_level->nbextradata; i++ )
+                    dprint( 10,  90+i*15, C_RED, "X= %d - Y= %d - T: %s", game.map_level->extradata[i].x, game.map_level->extradata[i].y, game.map_level->extradata[i].dialog );
             }
         #endif
 
diff --git a/src/map.c b/src/map.c
index 7ea491d..5670485 100644
--- a/src/map.c
+++ b/src/map.c
@@ -4,6 +4,10 @@
 
 #include <gint/display.h>
 
+extern Map *worldRPG[];
+extern ExtraData *extraRPG[];
+
+
 void render_map(Game *game) {
 
     Map *map_level = game->map_level;
@@ -193,9 +197,10 @@ void render_map_by_layer(Game *game, int layer) {
 short int get_tile(Game *game, int x, int y, int l) {
     
     Map *map_level = game->map_level;
+    
     /* Get the tile at (x, y) on layer l. Returns the tile ID or MAP_OUTSIDE if
      * she's not found. */
-    return x>=0 && x < map_level->w && y>=0 && y < map_level->h ?
+    return (x>=0 && x < map_level->w && y>=0 && y < map_level->h) ?
         map_level->layers[l][y * map_level->w + x] : MAP_OUTSIDE;
 }
 
@@ -204,7 +209,31 @@ short int get_walkable(Game *game, int x, int y) {
     Map *map_level = game->map_level;
     /* Get the tile at (x, y). Returns the tile ID or MAP_OUTSIDE if she's not
      * found. */
-    return x>=0 && x < map_level->w && y>=0 && y < map_level->h ?
+    return (x>=0 && x < map_level->w && y>=0 && y < map_level->h) ?
         map_level->walkable[y * map_level->w + x] : MAP_OUTSIDE;
 }
 
+/* return the pointer to the map containing the given position */
+Map *get_map_for_coordinates( Game *game, int x, int y )
+{
+    /* check if the current map contains the point */
+    if (x>=game->map_level->xmin && x<game->map_level->xmax && 
+        y>=game->map_level->ymin && y<game->map_level->ymax)
+        return game->map_level;
+
+    /* else we check in worldRPG if there is a mal containing that point */
+    int i = 0;
+    Map *current = worldRPG[i];
+    do
+    {
+        if (x>=current->xmin && x<current->xmax && 
+            y>=current->ymin && y<current->ymax)
+            return current;
+        i++;
+        current = worldRPG[i];
+    }
+    while (current!=NULL);
+    
+    /* else we return NULL cause the point is a not within a map */
+    return NULL;
+}
\ No newline at end of file
diff --git a/src/map.h b/src/map.h
index e255291..1586186 100644
--- a/src/map.h
+++ b/src/map.h
@@ -33,4 +33,7 @@ short int get_tile(Game *game, int x, int y, int l);
 /* Returns what is in the walkable layer at (x, y). */
 short int get_walkable(Game *game, int x, int y);
 
+/* return the pointer to the map containing the given position */
+Map* get_map_for_coordinates(Game *game, int x, int y );
+
 #endif
diff --git a/src/player.c b/src/player.c
index 07a347e..ed7067f 100644
--- a/src/player.c
+++ b/src/player.c
@@ -1,4 +1,5 @@
 #include "player.h"
+#include "dialogs.h"
 #include "map.h"
 #include "config.h"
 #include <gint/display.h>
@@ -25,6 +26,9 @@ const char damage_taken_walkable[WALKABLE_TILE_MAX] = {
 };
 
 extern bopti_image_t demo_player_img;
+extern bopti_image_t NPC_Icon_img;
+extern bopti_image_t SGN_Icon_img;
+extern bopti_image_t INFO_Icon_img;
 
 
 void player_draw(Game *game) {
@@ -35,19 +39,25 @@ void player_draw(Game *game) {
 void player_move(Game *game, Direction direction) {  
     Player *player = &game->player;
 
+
     /* How this player movement will modify the player x and y. */
     char dx, dy;
+    
     /* If the player will collide with a hard tile or if the will go outside of
      * the map. */
+  
     if(player_collision(game, direction, P_CENTER)){
+        
         /* If the will collide with the center of the player. */
         dx = one_px_mov[direction*2]*player->speed;
         dy = one_px_mov[direction*2+1]*player->speed;
+        
         player_fix_position(game, dx, dy);
     }
     else{
         if(player_collision(game, direction, P_RIGHTDOWN) ||
            player_collision(game, direction, P_LEFTUP)){
+        
             /* If the will collide with the edges of the player. */
             /* I fix his position so he won't be partially in the tile. */
             /* I invert dx and dy to fix the axis where he is not moving on. */
@@ -55,18 +65,49 @@ void player_move(Game *game, Direction direction) {
              */
             dx = one_px_mov[direction*2]*player->speed;
             dy = one_px_mov[direction*2+1]*player->speed;
+        
             player_fix_position(game, dx==0, dy==0);
         }
+        
         /* If he won't collide with the center, so I just move him normally */
         dx = one_px_mov[direction*2]*player->speed;
         dy = one_px_mov[direction*2+1]*player->speed;
+        
         player->x += dx;
         player->y += dy;
     }
+
+    player->wx = game->map_level->xmin * PXSIZE + player->x;
+    player->wy = game->map_level->ymin * PXSIZE + player->y;
 }
 
+
 void player_action(Game *game) {
-    /* TODO */
+    if( game->player.isDoingAction )  return;   /* alreday doing something */
+
+    if( game->player.canDoSomething )   /* we can do something */
+    {
+        /* we indicate that the player is occupied */
+        game->player.isDoingAction = true;
+
+        /* we collect the information */
+        char *text = game->map_level->extradata[game->player.whichAction].dialog;
+        /* we use the correct image as per the class of the item */        
+        bopti_image_t *face;
+        if (strcmp("INFO", game->map_level->extradata[game->player.whichAction].type)==0)
+            face = &INFO_Icon_img;
+        else if (strcmp("NPC", game->map_level->extradata[game->player.whichAction].type)==0)
+            face = &NPC_Icon_img;
+        else if (strcmp("SGN", game->map_level->extradata[game->player.whichAction].type)==0)
+            face = &SGN_Icon_img;
+        else face = &demo_player_img;
+
+        /* we treat the action - i.e. we show a dialog */
+        showtext_dialog( game, face, text, true, true );
+        
+        /* when done we release the occupied status of the player */
+        game->player.isDoingAction = false;
+    }
 }
 
 bool player_collision(Game *game, Direction direction,
@@ -77,38 +118,99 @@ bool player_collision(Game *game, Direction direction,
     /* Where is the tile where he will go to from his position. */
     char dx = one_px_mov[direction*2];
     char dy = one_px_mov[direction*2+1];
+
     if(!dx){
         dx += nomov_axis_check;
     }else if(!dy){
         dy += nomov_axis_check;
     }
+    
     dx = dx*(P_WIDTH/2+1);
     dy = dy*(P_HEIGHT/2+1);
+    
     /* The tile he will go to. */
     int player_tile_x = player->x+dx;
     int player_tile_y = player->y+dy;
-    /* Handle a negative position diffrently than a positive one. */
+    
+    /* check where the player is expected to go on the next move */
+    /* if outside the map, we check if there is a map on the other */
+    /* side of the current map*/
+    if (get_walkable(game, player_tile_x, player_tile_y) == MAP_OUTSIDE)
+    {
+        // we compute the expected world coordinates accordingly
+        // while taking care of the scaling between fx and cg models (PXSIZE)
+        int worldX = (player->wx+dx) / PXSIZE;
+        int worldY = (player->wy+dy) / PXSIZE;
+        Map *map = get_map_for_coordinates(game, worldX, worldY );
+        if (map!=NULL && map!=game->map_level)
+        {
+            Map *backupmap = game->map_level;
+            int backupx = player->x;
+            int backupy = player->y;
+            int backupwx = player->wx;
+            int backupwy = player->wy;
+
+            game->map_level = map;
+
+            player->wx = worldX * PXSIZE;
+            player->wy = worldY * PXSIZE;
+
+            player->x = (worldX - map->xmin ) * PXSIZE;
+            player->y = (worldY - map->ymin ) * PXSIZE;
+
+            int on_walkable = get_walkable(game, player->x/T_WIDTH,
+                                           player->y/T_HEIGHT);
+            
+            int speed = (on_walkable >= 0 && on_walkable < WALKABLE_TILE_MAX) ?
+                                walkable_speed[on_walkable] : 0;
+            
+            /* if he's on a hard tile and we need to revert the changes as */
+            /* tile on the next side of the border is not walkable */
+
+            if(!speed){
+                game->map_level = backupmap;
+                player->x = backupx;
+                player->y = backupy;
+                player->wx = backupwx;
+                player->wy = backupwy;
+                return true; /* He will collide with it. */
+            }
+
+            return false;
+        }
+    }
+
+
+    /* Handle a negative position differently than a positive one. */
     if(player_tile_x < 0) player_tile_x = player_tile_x/T_WIDTH-1;
     else player_tile_x = player_tile_x/T_WIDTH;
+    
     if(player_tile_y < 0) player_tile_y = player_tile_y/T_HEIGHT-1;
     else player_tile_y = player_tile_y/T_HEIGHT;
+    
     int on_walkable = get_walkable(game, player_tile_x, player_tile_y);
-    int speed = on_walkable >= 0 && on_walkable < WALKABLE_TILE_MAX ?
+    
+    int speed = (on_walkable >= 0 && on_walkable < WALKABLE_TILE_MAX) ?
                           walkable_speed[on_walkable] : 0;
+    
     /* if he's on a hard tile */
     if(!speed){
         return true; /* He will collide with it. */
     }
+    
     player->speed = speed;
+    
     return false; /* He won't collide with a hard tile. */
 }
 
 void player_fix_position(Game *game, bool fix_x, bool fix_y) {
 
     Player *player = &game->player;
+    
     /* I fix his poition on x or/and on y if y need to, so that he won't be over
      * the hard tile that he collided with. */
     if(fix_x) player->x = player->x/T_WIDTH*T_WIDTH+P_WIDTH/2;
+    
     if(fix_y) player->y = player->y/T_HEIGHT*T_HEIGHT+P_HEIGHT/2;
 }