2019-12-19 20:04:08 +01:00
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extends GSTMatchOrientation
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class_name GSTFace
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2020-01-02 23:42:41 +01:00
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# Calculates angular acceleration to rotate a target to face its target's position.
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# The acceleration will attempt to arrive with zero remaining angular velocity.
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2019-12-19 20:04:08 +01:00
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func _init(agent: GSTSteeringAgent, target: GSTAgentLocation).(agent, target) -> void:
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pass
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func _face(acceleration: GSTTargetAcceleration, target_position: Vector3) -> GSTTargetAcceleration:
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var to_target: = target_position - agent.position
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var distance_squared: = to_target.length_squared()
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if distance_squared < agent.zero_linear_speed_threshold:
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acceleration.set_zero()
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return acceleration
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else:
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var orientation = atan2(to_target.x, -to_target.y)
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return _match_orientation(acceleration, orientation)
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func _calculate_steering(acceleration: GSTTargetAcceleration) -> GSTTargetAcceleration:
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return _face(acceleration, target.position)
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