69 lines
2.2 KiB
GDScript
69 lines
2.2 KiB
GDScript
extends CharacterBody3D
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## NS-23: `NavigationAgent3D` path-follow for click-to-move visuals. Server owns `PositionState` /
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## `MoveCommand` (NS-16, NS-19); boot snap vs post-verify nav goal from `main.gd`.
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const MOVE_SPEED: float = 5.0
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## If the nav mesh is missing or the agent gives up, steer on XZ toward `target_position`.
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const FALLBACK_ARRIVE_EPS: float = 0.4
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@onready var _nav_agent: NavigationAgent3D = $NavigationAgent3D
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func _ready() -> void:
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_nav_agent.set_target_position(global_position)
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## After successful move POST + GET: walk to server target without teleporting.
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func set_authoritative_nav_goal(world_pos: Vector3) -> void:
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_nav_agent.set_target_position(world_pos)
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## NS-19 rejection or cancel pending path without moving the body.
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func clear_nav_goal() -> void:
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velocity = Vector3.ZERO
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_nav_agent.set_target_position(global_position)
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## Boot (and any hard reconcile): teleport to server position and reset agent.
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func snap_to_server(world_pos: Vector3) -> void:
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global_position = world_pos
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velocity = Vector3.ZERO
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_nav_agent.set_target_position(world_pos)
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func _physics_process(_delta: float) -> void:
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var nav_map: RID = _nav_agent.get_navigation_map()
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if NavigationServer3D.map_get_iteration_id(nav_map) == 0:
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velocity = Vector3.ZERO
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move_and_slide()
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return
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if _nav_agent.is_navigation_finished():
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var target: Vector3 = _nav_agent.target_position
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var flat_target := Vector3(target.x, global_position.y, target.z)
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var to_target: Vector3 = flat_target - global_position
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to_target.y = 0.0
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if to_target.length_squared() > FALLBACK_ARRIVE_EPS * FALLBACK_ARRIVE_EPS:
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velocity = to_target.normalized() * MOVE_SPEED
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velocity.y = 0.0
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else:
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velocity = Vector3.ZERO
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move_and_slide()
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return
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var next_path_position: Vector3 = _nav_agent.get_next_path_position()
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var to_next: Vector3 = next_path_position - global_position
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to_next.y = 0.0
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if to_next.length_squared() < 0.0001:
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var to_final: Vector3 = _nav_agent.target_position - global_position
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to_final.y = 0.0
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if to_final.length_squared() > 0.0001:
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velocity = to_final.normalized() * MOVE_SPEED
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velocity.y = 0.0
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else:
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velocity = Vector3.ZERO
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else:
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velocity = to_next.normalized() * MOVE_SPEED
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velocity.y = 0.0
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move_and_slide()
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