52 lines
1.3 KiB
GDScript
52 lines
1.3 KiB
GDScript
extends Node2D
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class_name Occluder
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const MAX_LENGTH = 200
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const EPSILON = 0.1
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const DEBUG = false
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var ignore_sides = [false, false, false, false]
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var size = Vector2(32, 32)
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var origin = null
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var polygon: PoolVector2Array = [Vector2.ZERO, Vector2(size.x, 0), Vector2(size.x, size.y), Vector2(0, size.y)]
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func _draw():
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if polygon == null:
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return
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if origin == null:
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return
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var player_position = origin.global_position - global_position
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# Find what edges is the players looking at
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var edges = [
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player_position.y < 0, # TOP
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player_position.x > size.x*2, # RIGHT
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player_position.y > size.y*2, # BOTTOM
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player_position.x < 0 # LEFT
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]
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for current in range(0, polygon.size()):
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var next = (current + 1) % polygon.size()
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if not ignore_sides[current] and not edges[current]:
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var points = [
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(polygon[current] * 2.1 - origin.global_position + global_position) * MAX_LENGTH,
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polygon[current], polygon[next],
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(polygon[next] * 2.1 - origin.global_position + global_position) * MAX_LENGTH
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]
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draw_polygon(points, [Color.black])
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if DEBUG:
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draw_polyline(points, Color.rebeccapurple)
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else:
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if DEBUG:
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if ignore_sides[current]:
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draw_line(polygon[current], polygon[next], Color.red, 1)
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else:
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draw_line(polygon[current], polygon[next], Color.yellow, 2)
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func _process(_delta):
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update()
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z_index = 999
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