diff --git a/menu/LoadingScreen.gd b/menu/LoadingScreen.gd
index 57858a2..662f126 100644
--- a/menu/LoadingScreen.gd
+++ b/menu/LoadingScreen.gd
@@ -2,24 +2,20 @@ extends Control
 
 var thread
 var world = {}
+var old_step = 0
 
 func _ready():
 	thread = Thread.new()
 	thread.start(self, "_generate_world")
 	set_process(true)
-#
-#	while true:
-#		if "step" in world:
-#			if world.step >= world.max_step:
-#				break
-#			print(world.step)
-#			$ProgressBar.value = world.step / world.max_step * 100
+	Global.loading.set_start_time()
 
-func _process(delta):
-	if "step" in world:
-		print(world.step)
-		if world.step >= 2:
-			get_tree().change_scene("res://world/game.tscn")
+func _process(_delta): 
+	$ProgressBar.value = Global.loading.get_percentage()
+	if (Global.loading.get_percentage() >= 100):
+		Global.loading.set_end_time()
+		print(Global.loading.get_elapsed_time("s"))
+		get_tree().change_scene("res://world/game.tscn")
 
 func _exit_tree():
 	thread.wait_to_finish()
diff --git a/project.godot b/project.godot
index bc1444c..baed0d8 100644
--- a/project.godot
+++ b/project.godot
@@ -34,7 +34,7 @@ _global_script_classes=[ {
 "language": "GDScript",
 "path": "res://utils/terrain/Terrain.gd"
 }, {
-"base": "Control",
+"base": "Reference",
 "class": "WorldGeneration",
 "language": "GDScript",
 "path": "res://utils/world_generation/WorldGeneration.gd"
diff --git a/ui/map/map.gd b/ui/map/map.gd
index 786c358..890b4d2 100644
--- a/ui/map/map.gd
+++ b/ui/map/map.gd
@@ -87,7 +87,7 @@ func draw_voronoi_cells_convex_hull():
 	
 func _draw():
 	print("before drawing")
-	heightmap()
+	# heightmap()
 #	draw_voronoi_cells()
 #	draw_triangles_edges()
 	# draw_voronoi_cells_convex_hull()
diff --git a/utils/Global.gd b/utils/Global.gd
index 67c7fcf..03cd234 100644
--- a/utils/Global.gd
+++ b/utils/Global.gd
@@ -2,10 +2,65 @@ extends Node
 
 var debug = true
 var terrain_name = ""
+var terrain_mesh: Mesh
 var terrain = Terrain.new()
+var loading = loading_helper.new()
 
 # Debuging messages
 func print_debug(message):
 	if debug:
 		print(message)
 
+class loading_helper:
+	var _step = 0
+	var _max_step = 0
+	var _start_time = 0
+	var _end_time = 0
+
+	func _init():
+		pass
+
+	func reset():
+		_step = 0
+		_max_step = 0
+		_start_time = 0
+		_end_time = 0
+
+	func set_step(number: int):
+		_step = number
+
+	func get_step():
+		return _step
+
+	func increment_step():
+		_step += 1
+
+	func set_max_step(number: int):
+		_max_step = number
+
+	func get_max_step():
+		return _max_step
+
+	func set_start_time():
+		_start_time = OS.get_ticks_msec()
+
+	func get_start_time():
+		return _start_time
+	
+	func set_end_time():
+		_end_time = OS.get_ticks_msec()
+
+	func get_end_time():
+		return _end_time
+
+	func get_elapsed_time(unit):
+		var elapsed_time = _end_time - _start_time
+		if unit == "s":
+			elapsed_time = float(elapsed_time) / 1000.0
+
+		return elapsed_time
+
+	func get_percentage():
+		if get_max_step() > 0:
+			return float(get_step()) / float(get_max_step()) * 100
+		return 0
diff --git a/utils/terrain/Terrain.gd b/utils/terrain/Terrain.gd
index 2137190..66a4a91 100644
--- a/utils/terrain/Terrain.gd
+++ b/utils/terrain/Terrain.gd
@@ -392,6 +392,13 @@ func _create_points():
 		_points[point_idx].z = points2d[point_idx].y
 	
 # Terrain methodes
+func set_data(key,value):
+	_data[key] = value
+	
+func get_data(key):
+	if _data.has(key):
+		return _data[key]
+
 func get_triangles():
 	var triangles = Triangles.new(self)
 	return triangles
diff --git a/utils/world_generation/WorldGeneration.gd b/utils/world_generation/WorldGeneration.gd
index bbc5045..3324070 100644
--- a/utils/world_generation/WorldGeneration.gd
+++ b/utils/world_generation/WorldGeneration.gd
@@ -1,4 +1,4 @@
-extends Control
+extends Reference
 
 class_name WorldGeneration
 
@@ -16,28 +16,27 @@ export(int) var river_proba = 200
 var rng = RandomNumberGenerator.new()
 var noise = OpenSimplexNoise.new()
 
-var step = 0
-var max_step = 5
-
 func _init():
+	Global.loading.reset()
 	rng.randomize()
 	noise.seed = rng.randi()
 	noise.octaves = octaves
-		
+	
 	if Global.terrain.exists(Global.terrain_name):
 		Global.terrain.load(Global.terrain_name)
 	else:
 		Global.terrain.create(width,height,spacing,Global.terrain_name)
-	
-	step += 1
+		
+	Global.loading.set_max_step(Global.terrain.get_triangles().size() + height)
 
 	if Global.terrain.is_created():
 		init_data()
 		Global.terrain.save()
-
+		
 	if Global.terrain.is_created() or Global.terrain.is_loaded():
-		add_trees()
-		step += 1
+		Global.terrain.set_data("mesh", create_mesh())
+		create_map()
+		# add_trees()
 		# get_tree().change_scene("res://world/game.tscn")
 	else:
 		Global.print_debug("Pas de Global.terrain, pas de construction ...")
@@ -201,13 +200,64 @@ func edge_is_river(edge):
 		return true
 	return false
 
-func add_trees():
-	rng.randomize()
-	var treescene = load("res://entities/environment/birchtree/birchtree.tscn")
+# func add_trees():
+# 	rng.randomize()
+# 	var treescene = load("res://entities/environment/birchtree/birchtree.tscn")
+# 	for triangle in Global.terrain.get_triangles():
+# 		if not triangle.get_data("water"):
+# 			var num = rng.randi_range(0, 5)
+# 			if num == 1:
+# 				var tree = treescene.instance()
+# 				tree.translation = Vector3(triangle.center3d() * Vector3(1, 12*10, 1))
+# 				add_child(tree)
+
+func create_mesh():
+	var st = SurfaceTool.new()
+
+	st.begin(Mesh.PRIMITIVE_TRIANGLES)
 	for triangle in Global.terrain.get_triangles():
-		if not triangle.get_data("water"):
-			var num = rng.randi_range(0, 5)
-			if num == 1:
-				var tree = treescene.instance()
-				tree.translation = Vector3(triangle.center3d() * Vector3(1, 12*10, 1))
-				add_child(tree)
+		if not triangle.is_water():
+			if triangle.get_elevation() < 0:
+				print(triangle.get_elevation())
+			var factor = Vector3(1, 120, 1)
+			for edge in triangle.edges():
+				if triangle.get_elevation() > edge.opposite_triangle().get_elevation():
+					st.add_vertex(Vector3(edge.start().point3d().x, triangle.get_elevation(), edge.start().point3d().z) * factor)
+					st.add_vertex(Vector3(edge.end().point3d().x, triangle.get_elevation(), edge.end().point3d().z) * factor)
+					st.add_vertex(Vector3(edge.start().point3d().x, edge.opposite_triangle().get_elevation(), edge.start().point3d().z) * factor)
+					
+					st.add_vertex(Vector3(edge.end().point3d().x, triangle.get_elevation(), edge.end().point3d().z) * factor)
+					st.add_vertex(Vector3(edge.end().point3d().x, edge.opposite_triangle().get_elevation(), edge.end().point3d().z) * factor)
+					st.add_vertex(Vector3(edge.start().point3d().x, edge.opposite_triangle().get_elevation(), edge.start().point3d().z) * factor)
+						
+			for point in triangle.points():
+				st.add_vertex(Vector3(point.point3d().x, triangle.get_elevation(), point.point3d().z) * factor)
+		Global.loading.increment_step()
+
+	st.generate_normals()
+	st.generate_tangents()
+	st.index()
+
+	var mi = MeshInstance.new()
+	mi.mesh = st.commit()
+	var material = load("res://world/world.material")
+	mi.set_surface_material(0, material)
+	mi.create_convex_collision()
+	mi.cast_shadow = GeometryInstance.SHADOW_CASTING_SETTING_ON
+	return mi
+
+func create_map():
+	var img = Image.new()
+	img.create(width, height, false, Image.FORMAT_RGBA8)
+	img.lock()
+
+	for y in height:
+		# print(y)
+		Global.loading.increment_step()
+		for x in width:
+			img.set_pixel(x,y,Color(randf(), randf(), randf()))
+	
+	img.unlock()
+
+
+	pass
diff --git a/world.mesh b/world.mesh
index d76dd56..4cfcc1f 100644
Binary files a/world.mesh and b/world.mesh differ
diff --git a/world/World3d.gd b/world/World3d.gd
index c9fe61c..dc3c38b 100644
--- a/world/World3d.gd
+++ b/world/World3d.gd
@@ -1,46 +1,5 @@
 extends Spatial
 
 func _ready():
-	draw_world()
-
-func draw_world():
-	# for i in range(0, 1, 1):
-	# 	print(i)
-	var st = SurfaceTool.new()
-
-	st.begin(Mesh.PRIMITIVE_TRIANGLES)
-	# st.add_smooth_group(true)
-	for triangle in Global.terrain.get_triangles():
-		if not triangle.is_water():
-			if triangle.get_elevation() < 0:
-				print(triangle.get_elevation())
-			var factor = Vector3(1, 120, 1)
-			for edge in triangle.edges():
-				if triangle.get_elevation() > edge.opposite_triangle().get_elevation():
-					st.add_vertex(Vector3(edge.start().point3d().x, triangle.get_elevation(), edge.start().point3d().z) * factor)
-					st.add_vertex(Vector3(edge.end().point3d().x, triangle.get_elevation(), edge.end().point3d().z) * factor)
-					st.add_vertex(Vector3(edge.start().point3d().x, edge.opposite_triangle().get_elevation(), edge.start().point3d().z) * factor)
-					
-					st.add_vertex(Vector3(edge.end().point3d().x, triangle.get_elevation(), edge.end().point3d().z) * factor)
-					st.add_vertex(Vector3(edge.end().point3d().x, edge.opposite_triangle().get_elevation(), edge.end().point3d().z) * factor)
-					st.add_vertex(Vector3(edge.start().point3d().x, edge.opposite_triangle().get_elevation(), edge.start().point3d().z) * factor)
-						
-			for point in triangle.points():
-				st.add_vertex(Vector3(point.point3d().x, triangle.get_elevation(), point.point3d().z) * factor)
-
-	st.generate_normals()
-#	st.generate_tangents()
-	st.index()
-	# Commit to a mesh.
-	var mesh = st.commit()
-
-	var file_name = "user://terrain/%s/world.mesh" % (Global.terrain_name)
-	ResourceSaver.save(file_name, mesh)
-	
-	var mi = MeshInstance.new()
-	mi.mesh = mesh
-	var material = load("res://world/world.material")
-	mi.set_surface_material(0, material)
-	mi.create_trimesh_collision()
-	mi.cast_shadow = GeometryInstance.SHADOW_CASTING_SETTING_ON
+	var mi = Global.terrain.get_data("mesh")
 	add_child(mi)