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https://github.com/Steffo99/swear-jar.git
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85 lines
2.7 KiB
GDScript
85 lines
2.7 KiB
GDScript
extends Area2D
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class_name Ghost
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## Ghost previewing the instantiation of a scene.
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## Color to modulate this with if the body currently isn't overlapping anything.
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@export var valid_color: Color = Color.WHITE
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## Color to modulate this with if the body currently is overlapping something.
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@export var invalid_color: Color = Color.RED
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## The [Instantiator] to use to spawn the ghosted item.
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@onready var instantiator: Instantiator = $Instantiator
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## The [OverlapChecker] to use to see if a solid block is overlapping the ghost.
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@onready var overlap_checker: OverlapChecker = $OverlapChecker
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## The [PlaceableAreaChecker] to use to see if the ghost is currently inside the placeable area.
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@onready var placeable_area_checker: PlaceableAreaChecker = $PlaceableAreaChecker
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## The [OverlapFreer] to use to delete the [PhysicsBody2D] behind the ghost before instantiation.
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@onready var overlap_freer: OverlapFreer = $OverlapFreer
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## The [CollisionShape2D] to use to check for placement checks.
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##
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## MUST consist of a [RectangleShape2D].
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@onready var placement_shape: CollisionShape2D = $PlacementShape
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## The [Sprite2D] node previewing the scene.
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@onready var preview_sprite: Sprite2D = $PlacementShape/PreviewSprite
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## The collision mask of objects that should prevent this object's placement.
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@export_flags_2d_physics var collision_mask_prevent_placement: int
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## The collision mask of objects that should be deleted on this object's placement.
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@export_flags_2d_physics var collision_mask_delete_placement: int
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## The texture that the preview sprite should display.
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@export var preview_texture: Texture2D:
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get:
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return preview_texture
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set(value):
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preview_texture = value
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# Quick priority fix
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if preview_sprite:
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preview_sprite.texture = value
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func _ready():
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collision_mask = collision_mask_prevent_placement | collision_mask_delete_placement
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preview_sprite.texture = preview_texture
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func _physics_process(_delta: float):
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# Update collision
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update_can_place()
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var can_place: bool:
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get:
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return can_place
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set(value):
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can_place = value
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modulate = valid_color if value else invalid_color
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## Update the value of [can_place].
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# DIRTY HACK: Relies on the placeable area being perfectly surrounded by solid bodies.
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func update_can_place() -> void:
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can_place = overlap_checker.is_overlapping_with == null and placeable_area_checker.is_overlapping_with != null
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func materialize():
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# Compatibility stub for Instantiator
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if not can_place:
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return null
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var overlapping_bodies = get_overlapping_bodies()
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for body in overlapping_bodies:
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if body is PhysicsBody2D:
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if body.collision_layer & collision_mask_delete_placement:
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body.queue_free()
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var inst = instantiator.instantiate()
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# TODO: Remove this
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return inst
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