[EDIT] bug fix and final push

Scene/GameMap.tscn

@@ -68,11 +68,11 @@ margin_left = 1300.0
 margin_right = 1300.0
 
 [node name="Player1" parent="." instance=ExtResource( 2 )]
-position = Vector2( 292.436, 346.549 )
+position = Vector2( 1610.2, 283.082 )
 z_index = 10
 
 [node name="Player2" parent="." instance=ExtResource( 2 )]
-position = Vector2( 1604.59, 344.539 )
+position = Vector2( 291.832, 282.743 )
 z_index = 10
 
 [node name="GameManager" parent="." instance=ExtResource( 5 )]

Scene/Player.tscn

@@ -211,7 +211,7 @@ _data = {
 }
 
 [node name="KinematicBody2D" type="KinematicBody2D" groups=[
-"Player",
+"player",
 ]]
 script = ExtResource( 2 )
 slow_cooldown = 3

Scene/SlowTrail.tscn

@@ -9,6 +9,7 @@
 extents = Vector2( 88.8117, 26.2111 )
 
 [node name="SlowTrail" type="Node2D"]
+scale = Vector2( 2, 1 )
 script = ExtResource( 2 )
 
 [node name="Sprite" type="Sprite" parent="."]

Scripts/GameManager.gd

@@ -1,14 +1,27 @@
 extends Node2D
 
 onready var spawnPoints = get_tree().get_nodes_in_group("spawn_point")
+onready var tmpSpawnPoints = get_tree().get_nodes_in_group("spawn_point")
+var prevSpawnPoint = null
 
 var bucket = load("res://Scene/Clopinette.tscn")
 
+func _ready():
+	tmpSpawnPoints.shuffle()
+
 func spawnBucket():
 	var newBucket = bucket.instance()
+	
+	if tmpSpawnPoints.size() == 0:
+		tmpSpawnPoints = [] + spawnPoints
+		tmpSpawnPoints.shuffle()
+
+	var newSpawnPoint = tmpSpawnPoints[randi() % tmpSpawnPoints.size()]
+	
 	self.get_parent().add_child(newBucket)
 	newBucket.add_to_group("bucket")
-	newBucket.set_position(spawnPoints[randi() % spawnPoints.size()].get_position())
+	newBucket.set_position(newSpawnPoint.get_position())
+	tmpSpawnPoints.erase(newSpawnPoint)
 
 func _process(_delta):
 	if get_tree().get_nodes_in_group("bucket").empty():