46 lines
1.5 KiB
GDScript
46 lines
1.5 KiB
GDScript
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@tool
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extends BTAction
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@export var target_var: StringName = &"target"
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var target_node: Node3D = null
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var _current_look_direction:Vector3 = Vector3.BACK
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var _current_look_angle:float = 0
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var _target_look_direction:Vector3 = Vector3.BACK
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var _target_look_angle:float = 0
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var _look_angle_damper:SpringDamper = SpringDamper.new(0, 2, 0.06, 0.003)
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func _generate_name() -> String:
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return "Look at Target " + LimboUtility.decorate_var(target_var)
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func _tick(delta: float) -> Status:
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target_node = blackboard.get_var(target_var)
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if not is_instance_valid(target_node):
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return FAILURE
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update_look_direction(delta)
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if absf(_target_look_angle - _current_look_angle) < deg_to_rad(5):
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return SUCCESS
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return FAILURE
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func update_look_direction(delta:float) -> void:
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_target_look_direction = (target_node.global_position - agent.global_position).normalized()
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_current_look_direction = agent.basis.z
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_current_look_angle = _current_look_direction.signed_angle_to(Vector3.BACK, Vector3.UP)
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_target_look_angle = _target_look_direction.signed_angle_to(Vector3.BACK, Vector3.UP)
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if _target_look_angle - _current_look_angle > PI:
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_current_look_angle = _current_look_angle + PI * 2
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elif _current_look_angle - _target_look_angle > PI:
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_current_look_angle = _current_look_angle - PI * 2
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var damped_look_angle:float = _look_angle_damper.calc(_current_look_angle, _target_look_angle, delta)
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_current_look_direction = Vector3(sin(-damped_look_angle), 0, cos(-damped_look_angle))
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agent.basis = Basis.looking_at(-_current_look_direction)
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