seedpackets and handlers

scripts/gui/seedpacket/hotbar_handler.gd

@@ -0,0 +1,32 @@
+extends SeedpacketHandler
+
+## Seedpacket handler for hotbar plants.
+
+class_name HotbarHandler
+
+## Is current state valid for use?
+
+var valid_state : bool = false
+var enough_sun : bool = true
+
+func _init(seedpacket : Seedpacket) -> void:
+	super._init(seedpacket)
+	LevelEventBus.state_changed.connect(on_level_state_changed)
+	LevelEventBus.sun_count_updated.connect(on_sun_count_updated)
+
+func exit() -> void:
+	LevelEventBus.state_changed.disconnect(on_level_state_changed)
+	LevelEventBus.sun_count_updated.disconnect(on_sun_count_updated)
+
+func is_avaiable():
+	return valid_state and enough_sun
+
+func on_level_state_changed(state : LevelData.LevelStates):
+	valid_state = state == LevelData.LevelStates.PlantPick or state == LevelData.LevelStates.Game
+	if state == LevelData.LevelStates.Game:
+		enough_sun = LevelData.sun_count >= seedpacket.held_resource.cost
+	seedpacket.update_contents()
+
+func on_sun_count_updated(to : float):
+	enough_sun = to >= seedpacket.held_resource.cost
+	seedpacket.update_contents()