mirror of
https://github.com/Relintai/godot-steering-ai-framework.git
synced 2024-12-28 09:47:16 +01:00
69 lines
1.8 KiB
GDScript
69 lines
1.8 KiB
GDScript
# A specialized steering agent that updates itself every frame so the user does
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# not have to using a RigidBody2D
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# @category - Specialized agents
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extends GSAISpecializedAgent
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class_name GSAIRigidBody2DAgent
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# The RigidBody2D to keep track of
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var body : RigidBody2D setget _set_body
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var _last_position : Vector2
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var _body_ref : WeakRef
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func _init(_body : RigidBody2D) -> void:
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if not _body.is_inside_tree():
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yield(_body, "ready")
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self.body = _body
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# warning-ignore:return_value_discarded
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_body.get_tree().connect("physics_frame", self, "_on_SceneTree_frame")
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# Moves the agent's `body` by target `acceleration`.
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# @tags - virtual
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func _apply_steering(acceleration : GSAITargetAcceleration, _delta : float) -> void:
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var _body: RigidBody2D = _body_ref.get_ref()
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if not _body:
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return
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_applied_steering = true
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_body.apply_central_impulse(GSAIUtils.to_vector2(acceleration.linear))
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_body.apply_torque_impulse(acceleration.angular)
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if calculate_velocities:
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linear_velocity = GSAIUtils.to_vector3(_body.linear_velocity)
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angular_velocity = _body.angular_velocity
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func _set_body(value: RigidBody2D) -> void:
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body = value
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_body_ref = weakref(value)
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_last_position = value.global_position
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_last_orientation = value.rotation
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position = GSAIUtils.to_vector3(_last_position)
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orientation = _last_orientation
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func _on_SceneTree_frame() -> void:
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var _body: RigidBody2D = _body_ref.get_ref()
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if !_body:
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return
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if !_body.is_inside_tree() or _body.get_tree().paused:
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return
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var current_position : Vector2 = _body.global_position
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var current_orientation : float = _body.rotation
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position = GSAIUtils.to_vector3(current_position)
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orientation = current_orientation
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if calculate_velocities:
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if _applied_steering:
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_applied_steering = false
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else:
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linear_velocity = GSAIUtils.to_vector3(_body.linear_velocity)
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angular_velocity = _body.angular_velocity
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