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extends Node2D
var is_erasing = false
@onready var ground = get_parent().get_node("GroundCollision") as StaticBody2D
@onready var map = get_parent().get_node("Map") as Node2D
@onready var tilemap = map.get_child(0).get_child(0)
var size = Vector2(12, 12)
var carve_area := PackedVector2Array([
(size / 2) * Vector2(-1, -1),
(size / 2) * Vector2(1, -1),
(size / 2) * Vector2(1, 1),
(size / 2) * Vector2(-1, 1),
])
func _ready():
map.get_child(0).polygon = ground.get_child(0).polygon
func _physics_process(_delta: float) -> void:
if Input.is_action_just_pressed("select"):
is_erasing = true
if Input.is_action_just_released("select"):
is_erasing = false
global_position = get_global_mouse_position()
queue_redraw()
if Input.is_action_just_pressed("select"): #if is_erasing:
var points = PackedVector2Array()
for point in carve_area:
points.append(global_position + point)
var collision_polygons = ground.get_children()
var visibility_polygons = map.get_children()
for idx in range(collision_polygons.size()):
var collision_node: CollisionPolygon2D = collision_polygons[idx]
var visilibty_node: Polygon2D = visibility_polygons[idx]
var clipped = Geometry2D.clip_polygons(collision_node.polygon, points)
#print(clipped.size(), clipped)
if clipped.size() > 0 and not Geometry2D.is_polygon_clockwise(clipped[0]):
collision_node.polygon = clipped[0]
visilibty_node.polygon = clipped[0]
if clipped.size() > 1 and not Geometry2D.is_polygon_clockwise(clipped[1]):
var p = CollisionPolygon2D.new()
p.polygon = clipped[1]
ground.add_child(p)
var po = Polygon2D.new()
po.polygon = clipped[1]
po.clip_children = CanvasItem.CLIP_CHILDREN_ONLY
po.add_child(tilemap.duplicate())
map.add_child(po)
func _draw() -> void:
draw_rect(
Rect2((size / 2) * -1, size),
Color("#fff"),
is_erasing
)
draw_colored_polygon( # TODO: use carve_area to draw
carve_area,
Color("#fff")
)
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