Player health UI is bound to singleton

Global/InGameState.gd

@@ -7,6 +7,7 @@ var player_count: int
 
 signal player_win(player_id)
 signal player_count_updated(new_player_count)
+signal player_health_updated(player_id, new_player_health)
 
 
 func set_player_count(new_player_count: int):
@@ -16,16 +17,23 @@ func set_player_count(new_player_count: int):
 	player_healths = []
 	
 	for i in range(0, player_count):
-		player_healths.append(max_health)
+		player_healths.append(0.0)
+		set_player_health(i, max_health)
 	
 	emit_signal("player_count_updated", new_player_count)
 
 
 func subtract_player_health(player_id, subtractor):
+	set_player_health(player_id, player_healths[player_id] - subtractor)
+
+
+func set_player_health(player_id, new_value):
 	assert(player_id < player_count)
 	assert(player_id >= 0)
 	
-	player_healths[player_id] -= subtractor
+	player_healths[player_id] = new_value
 	
 	if player_healths[player_id] < 0.0:
 		emit_signal("player_win", player_id)
+	else:
+		emit_signal("player_health_updated", player_id, player_healths[player_id])