41 lines
1.3 KiB
GDScript3
41 lines
1.3 KiB
GDScript3
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extends GSTSteeringBehavior
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class_name GSTSeparation
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# Group behavior that produces acceleration repelling from the other neighbors that are in the
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# immediate area defined by the given `GSTProximity`.
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# # The produced acceleration is an average of all agents under consideration, multiplied by a
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# # strength decreasing by the inverse square law in relation to distance, and accumulated.
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# # In effect, all neighbors produce a single repelling force.
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var decay_coefficient: = 1.0
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var acceleration: GSTTargetAcceleration
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var proximity: GSTProximity
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func _init(agent: GSTSteeringAgent, proximity: GSTProximity).(agent) -> void:
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self.proximity = proximity
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func _calculate_steering(acceleration: GSTTargetAcceleration) -> GSTTargetAcceleration:
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acceleration.set_zero()
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self.acceleration = acceleration
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proximity.find_neighbors(funcref(self, "_report_neighbor"))
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return acceleration
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func _report_neighbor(neighbor: GSTSteeringAgent) -> bool:
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var to_agent: = agent.position - neighbor.position
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var distance_squared: = to_agent.length_squared()
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var max_acceleration: = agent.max_linear_acceleration
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var strength: = decay_coefficient / distance_squared
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if strength > max_acceleration:
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strength = max_acceleration
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acceleration.linear += to_agent * (strength / sqrt(distance_squared))
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return true
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