[EDIT] merged

Scene/TestScene.tscn

@@ -1,8 +1,9 @@
-[gd_scene load_steps=5 format=2]
+[gd_scene load_steps=6 format=2]
 
 [ext_resource path="res://Scene/Player.tscn" type="PackedScene" id=1]
 [ext_resource path="res://Assets/Placeholder.png" type="Texture" id=2]
-[ext_resource path="res://Scripts/GameManager.gd" type="Script" id=3]
+[ext_resource path="res://Scene/Clopinette.tscn" type="PackedScene" id=3]
+[ext_resource path="res://Scripts/GameManager.gd" type="Script" id=4]
 
 [sub_resource type="RectangleShape2D" id=1]
 extents = Vector2( 15.6178, 15.7669 )
@@ -28,14 +29,20 @@ shape = SubResource( 1 )
 position = Vector2( 221.278, 126.847 )
 
 [node name="GameManager" type="Node2D" parent="."]
-script = ExtResource( 3 )
+script = ExtResource( 4 )
 
 [node name="SpawnPoint" type="Node2D" parent="." groups=[
 "spawn_point",
 ]]
-position = Vector2( 272.415, 35.2101 )
+position = Vector2( 272.415, 34.2101 )
 
 [node name="SpawnPoint2" type="Node2D" parent="." groups=[
 "spawn_point",
 ]]
 position = Vector2( 65.7874, 32.4304 )
+
+[node name="Clopinette" parent="." groups=[
+"bucket",
+] instance=ExtResource( 3 )]
+position = Vector2( 149.267, 34.1946 )
+scriptName = "res://Scripts/PaintEffects/Invisibility.gd"

Scripts/Clopinette.gd

@@ -1,18 +1,19 @@
 extends Node2D
 
-var sprite;
-var area;
-var collider;
+var sprite
+var area
+var collider
+var loadedScript
+
+export(String, FILE, "*.gd") var scriptName
 
 # Called when the node enters the scene tree for the first time.
 func _ready():
 	sprite = get_node("Sprite")
 	area = get_node("Area2D")
+	loadedScript = load(scriptName).new()
 	area.connect("body_entered", self, "onBodyEntered")
 
-func onBodyEntered(body : PhysicsBody2D):		
-	queue_free()		
-
-# Called every frame. 'delta' is the elapsed time since the previous frame.
-func _process(delta):
-	pass
+func onBodyEntered(body):	
+	body.addCoroutine(loadedScript.StartEffect(body))
+	queue_free()

Scripts/PaintEffects/Invisibility.gd

@@ -0,0 +1,34 @@
+extends Node
+
+#The time, in seconds, it should take for the character to fade to FadeOutValue
+export var FadeOutTime = 2.0
+export var InvisTime = 5.0
+export var FadeInTime = 2.0
+
+#The alpha value we aim for when fading out
+export var FadeOutValue = 0.05
+
+func AlmostFadeOutRoutine(player, delta):
+	var sprite : Sprite = player.get_node("Sprite")
+	var elapsed = delta	
+	var origin = sprite.get_modulate().a
+	while sprite.self_modulate.a > FadeOutValue:
+		var a = lerp(origin, FadeOutValue, elapsed /  FadeOutTime)
+		sprite.self_modulate = Color(1,1,1, a)		
+		elapsed += yield()
+		
+	elapsed -= FadeOutTime;
+	while elapsed < InvisTime:
+		elapsed += yield()	
+	elapsed -= InvisTime;
+		
+	while sprite.self_modulate.a < origin:
+		var a = lerp(FadeOutValue, origin, elapsed / FadeInTime)
+		sprite.self_modulate = Color(1,1,1, a)
+		elapsed += yield()	
+		
+
+func StartEffect(player):
+	var rout = AlmostFadeOutRoutine(player, 0)
+	return rout	
+	

Scripts/Player.gd

@@ -8,11 +8,14 @@ const MAX_LIFE = 30
 var vel = Vector2.ZERO
 var curLife = MAX_LIFE
 
+var coroutines = []
+
 #onready var animationPlayer = $AnimationPlayer
 #onready var animationTree = $AnimationTree
 #onready var animationState = animationTree.get("parameters/playback")
 
 func _process(delta):
+	updatePaintEffects(delta)
 	curLife -= delta
 	if curLife <= 0:
 		#fin du game laul
@@ -40,3 +43,21 @@ func _physics_process(delta):
 		vel = vel.move_toward(Vector2.ZERO, FRICTION * delta)
 	
 	vel = move_and_slide(vel)
+
+	
+func updatePaintEffects(delta):	
+	var sprite = get_node("Sprite")		
+	var updated = []	
+	for rout in coroutines:				
+		if rout != null && rout.is_valid():
+			var new_rout = rout.resume(delta)		
+			if new_rout != null && new_rout.is_valid():
+				updated.append(new_rout)				
+		coroutines.remove(coroutines.find(rout))
+						
+	for rout in updated:
+		coroutines.append(rout)
+			
+
+func addCoroutine(routine):
+	coroutines.append(routine)