blocks now give money when destroyed

misc/ball_vendor.gd

@@ -17,6 +17,7 @@ signal on_update_ball_price(id: int, new_price: int)
 var money: int = 0
 
 func _ready():
+	SignalBus.on_money_changed_difference.connect(_update_money_difference)
 	_update_money()
 	for k in _catalogue:
 		on_update_ball_price.emit(int(k), _catalogue[k])
@@ -32,5 +33,9 @@ func may_buy_ball(id: int) -> bool:
 	else:
 		return false
 
+func _update_money_difference(difference):
+	money += difference
+	_update_money()
+
 func _update_money():
 	SignalBus.on_money_changed.emit(money)

misc/signal_bus.gd

@@ -2,3 +2,4 @@ extends Node
 
 signal on_try_buy_ball(id: int)
 signal on_money_changed(new_money: int)
+signal on_money_changed_difference(difference: int)