Create and use the group living

This group contains living players.

Game.gd

@@ -30,25 +30,23 @@ func _process(d):
 	center_camera()
 
 func center_camera():
-	var living_players = []
 	var position_accumulator = Vector2(0.0, 0.0)
 	var players = get_tree().get_nodes_in_group("players")
+	var living = get_tree().get_nodes_in_group("living")
 
-	for p in players:
-		if (p.is_alive()):
-			living_players.append(p)
-			position_accumulator += p.position
-
-	if living_players.size() == 0:
+	if living.size() == 0:
 		# Keep camera in the last position
 		return
 
-	cam.position = position_accumulator / living_players.size()
+	for p in living:
+		position_accumulator += p.position
+
+	cam.position = position_accumulator / living.size()
 
 	var dist = 0
-	for i in range(living_players.size() - 1):
-		for j in range(i + 1, living_players.size()):
-			dist = max(dist, living_players[i].position.distance_to(living_players[j].position))
+	for i in range(living.size() - 1):
+		for j in range(i + 1, living.size()):
+			dist = max(dist, living[i].position.distance_to(living[j].position))
 
 	# Extend camera zoom if liners are far from each other
 	var zoom = 1.0

Player.gd

@@ -10,7 +10,7 @@ var rayRight
 # Misc
 var cell_size
 var cell_half_size
-var alive = true
+var alive = false
 
 # Enum
 enum Direction {
@@ -38,6 +38,7 @@ export var turn_right_action:String
 
 func _ready():
 	add_to_group("players")
+	spring()
 
 	assert(grid)
 	assert(turn_left_action)
@@ -103,7 +104,7 @@ func _on_tween_completed(o, k):
 	is_moving = false
 
 func _on_crash(b):
-	alive = false
+	die()
 	grid.set_cell(posix - dirx, posiy - diry, 1)
 	grid.set_cell(posix, posiy, 2)
 
@@ -119,5 +120,13 @@ func turn(dir:int):
 	else:
 		dirx -= 1
 
+func die():
+	alive = false
+	remove_from_group("living")
+
+func spring():
+	alive = true
+	add_to_group("living")
+
 func is_alive():
 	return alive