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32 lines
669 B
GDScript3
32 lines
669 B
GDScript3
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extends Area2D
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class_name Tracker
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## Abstract base class for [Area2D]s tracking a certain subset of [Node2D]s.
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signal tracked(body: Node2D)
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signal untracked(body: Node2D)
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var tracking: Array = []
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func track(body: Node2D) -> bool:
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var act: bool = not body in tracking
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if act:
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tracking.push_back(body)
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tracked.emit(body)
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return act
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func untrack(body: Node2D) -> bool:
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var act: bool = body in tracking
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if act:
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tracking.erase(body)
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untracked.emit(body)
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return act
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func log_tracked(body: Node2D) -> void:
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Log.p(self, "Tracking a new target: %s" % body)
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func log_untracked(body: Node2D) -> void:
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Log.p(self, "Not tracking anymore target: %s" % body)
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