75 lines
1.9 KiB
GDScript3
75 lines
1.9 KiB
GDScript3
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extends Line2D
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signal node_at_end(node: Node)
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@export var speed: float = 10.0
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var length: float = 1000.0
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var transported_objects: Dictionary
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var belt_stopped: bool = false
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func _ready() -> void:
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calculate_length()
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func calculate_length() -> void:
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length = 0.0
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var first: bool = true
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var lastPoint: Vector2
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for point in points:
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if first:
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first = false
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continue
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else:
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length += lastPoint.distance_to(point)
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lastPoint = point
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func get_first_object_progress() -> float:
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var least: float = length
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for key in transported_objects.keys():
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var progress: float = transported_objects.get(key, 0.0)
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if progress < least:
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least = progress
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return least
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func position_resource(res: Node2D, progress: float) -> void:
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var first: bool = true
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var segmentStartPos: Vector2 = Vector2()
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var segmentStartProg: float = 0.0
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res.z_index = 1
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for point in points:
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if first:
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segmentStartPos = point
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first = false
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continue
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var endProg: float = segmentStartProg + segmentStartPos.distance_to(point)
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if progress <= endProg:
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var x: float = (progress - segmentStartProg) / (endProg - segmentStartProg)
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var pos: Vector2 = segmentStartPos.lerp(point, x)
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res.position = pos
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return
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segmentStartProg = endProg
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segmentStartPos = point
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func add_transported_object(res: Node) -> void:
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if res is Node2D:
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transported_objects.set(res, 0);
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func remove_transported_object(res: Node) -> void:
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if res is Node2D:
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var progress: float = transported_objects.get(res, 0.0)
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transported_objects.erase(res)
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if progress >= length:
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belt_stopped = false
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func _process(delta: float) -> void:
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for key in transported_objects.keys():
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var progress: float = transported_objects.get(key, 0.0)
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if !belt_stopped:
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progress += speed * delta
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transported_objects.set(key, progress)
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position_resource(key, progress)
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if progress >= length:
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belt_stopped = true
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node_at_end.emit(key)
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