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27 lines
879 B
GDScript
27 lines
879 B
GDScript
class_name GSAICohesion
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extends GSAIGroupBehavior
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# Calculates an acceleration that attempts to move the agent towards the center
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# of mass of the agents in the area defined by the `GSAIProximity`.
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# @category - Group behaviors
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var _center_of_mass: Vector3
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func _calculate_steering(acceleration: GSAITargetAcceleration) -> void:
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acceleration.set_zero()
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_center_of_mass = Vector3.ZERO
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var neighbor_count = proximity.find_neighbors(_callback)
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if neighbor_count > 0:
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_center_of_mass *= 1.0 / neighbor_count
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acceleration.linear = ((_center_of_mass - agent.position).normalized() * agent.linear_acceleration_max)
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# Callback for the proximity to call when finding neighbors. Adds `neighbor`'s position
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# to the center of mass of the group.
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# @tags - virtual
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func _report_neighbor(neighbor: GSAISteeringAgent) -> bool:
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_center_of_mass += neighbor.position
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return true
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