30 lines
915 B
GDScript
30 lines
915 B
GDScript
# Calculates angular acceleration to rotate a target to face its target's
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# position. The behavior attemps to arrive with zero remaining angular velocity.
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class_name GSAIFace
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extends GSAIMatchOrientation
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func _init(agent: GSAISteeringAgent, target: GSAIAgentLocation, use_z := false).(
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agent, target, use_z
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) -> void:
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pass
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func _face(acceleration: GSAITargetAcceleration, target_position: Vector3) -> void:
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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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else:
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var orientation = (
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GSAIUtils.vector3_to_angle(to_target)
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if use_z
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else GSAIUtils.vector2_to_angle(GSAIUtils.to_vector2(to_target))
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)
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_match_orientation(acceleration, orientation)
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func _calculate_steering(acceleration: GSAITargetAcceleration) -> void:
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_face(acceleration, target.position)
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