80 lines
2.7 KiB
GDScript3
80 lines
2.7 KiB
GDScript3
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extends Building
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class_name ItemSpawner
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# TODO: Use CustomResources to set item types
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@export var item_type_to_spawn: String = "TestItem"
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@export var spawn_interval_seconds: float = 1.0
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@onready var spawn_timer: Timer = $SpawnTimer
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#@onready var spawn_point_offset: Vector2 = Vector2(0, -32)
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var _spawned_item_scene: PackedScene = preload("res://Item.tscn")
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func _ready():
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super()
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_on_grid_position_changed()
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if spawn_timer:
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spawn_timer.one_shot = true
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spawn_timer.wait_time = spawn_interval_seconds
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spawn_timer.timeout.connect(_on_spawn_timer_timeout)
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spawn_timer.start()
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func _on_grid_position_changed():
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super()
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name = "ItemSpawner_%s,%s" % [current_grid_pos.x, current_grid_pos.y]
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# Can never accept items
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func can_accept_item() -> bool:
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return false
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func handle_item_entry(item: Item, remaining_delta_from_previous: float = 0.0):
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# Should never happen since can_accept_item() is always false
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#item.queue_free()
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print("Item %s tried to enter spawner at %s." % [item.type, current_grid_pos])
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func _on_spawn_timer_timeout():
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set_physics_process(true)
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var next_grid_cell_pos = current_grid_pos + direction
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var next_entity: Building = game_grid.get_content_at_grid(next_grid_cell_pos)
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if not next_entity:
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print("Spawner at %s is blocked: no entity at next cell." % current_grid_pos)
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return
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if not next_entity.can_accept_item():
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# pause future spawning and "buffer" current item spawn until the space is free
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# TODO: Use a signal FROM the belt here (belt should signal when it is free instead
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# of the spawner checking every tick...
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print("Spawner at %s is blocked: next entity (%s) cannot accept item. Pausing spawn." % [current_grid_pos, next_entity.name])
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return
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var new_item: Item = _spawned_item_scene.instantiate()
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new_item.modulate = modulate
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new_item.type = item_type_to_spawn
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game_grid.add_child(new_item)
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new_item.global_position = global_position # + spawn_point_offset
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new_item.reset_physics_interpolation()
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print("Spawner at %s is spawned item (%s) for next_entity (%s)." % [current_grid_pos, new_item.name, next_entity.name])
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next_entity.handle_item_entry(new_item, 0.0) # TOOO: Use actual item pixel size
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# Maybe have up to 4 or 8 items on a belt like factorio?
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# Currently all items are in the center (easier), but we still
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# need to use size to check if we are backed up and can't move
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# Easierst would be to have ALL items be the same size, and use factorios approach of distances
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# between items for checks
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spawn_timer.start()
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func _physics_process(delta: float) -> void:
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# We could disable physics_process() while the timer is running
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if not spawn_timer.is_stopped():
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set_physics_process(false)
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return
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_on_spawn_timer_timeout()
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