156 lines
5.4 KiB
GDScript
156 lines
5.4 KiB
GDScript
extends CharacterBody3D
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## 跳跃输入缓冲（秒）：按下跳跃后这段时间内若落地，自动补上一次起跳
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const JUMP_BUFFER_TIME: float = 0.1
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@export_group("视角")
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## 鼠标灵敏度（弧度/像素）
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@export var mouse_sensitivity: float = 0.0025
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## 最低俯角（向下看）
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@export var pitch_min_deg: float = -89.0
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## 最高仰角（向上看）
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@export var pitch_max_deg: float = 89.0
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@export_group("移动")
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## 常规移动速度（米/秒）
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@export var walk_speed: float = 5.0
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## 疾跑速度（米/秒）
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@export var sprint_speed: float = 8.5
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## 地面加速度（米/秒²）
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@export var acceleration: float = 45.0
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## 空中加速度（米/秒²）
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@export var air_acceleration: float = 12.0
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## 起跳初速度（米/秒）
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@export var jump_velocity: float = 5.0
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@onready var body: Node3D = $Body
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## 眼睛分两层转：CameraRig 绕竖直轴转（yaw），Camera 原地抬头低头（pitch）。
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## 分开是为了让 pitch 不掺进移动方向 —— 移动只用 rig 的 basis，低头看地也不会走歪。
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@onready var camera_rig: Node3D = $CameraRig
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@onready var camera: Camera3D = $CameraRig/Camera
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## 动画状态机。控制器只把「运动结果」交给它，它也只管自己播动画。
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@onready var animator: PlayerAnimator = $Body/AnimationPlayer
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@onready var interaction_pos: Marker3D = $CameraRig/Camera/InteractionPos
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@onready var interaction_ray: RayCast3D = $CameraRig/Camera/InteractionRay
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var _gravity: float = float(ProjectSettings.get_setting("physics/3d/default_gravity", 9.8))
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var _yaw: float = 0.0
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var _pitch: float = 0.0
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var _jump_buffer: float = 0.0
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# 拾取
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var _pickObj = null
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var _pickPower = 10
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func _ready() -> void:
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# 远端玩家只是一具「回放身体」：
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# 拆掉相机 —— 否则每多一个玩家就多一台 Camera3D 抢渲染；
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# 关掉输入与物理 —— 否则与权威端双重模拟，表现为抖动、漂移、穿地。
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# 它的 position 与 Body.rotation 由 Sync 子节点同步；血条由 health 同步。
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if not is_multiplayer_authority():
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camera_rig.queue_free()
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set_physics_process(false)
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set_process_unhandled_input(false)
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return
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_yaw = camera_rig.rotation.y
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_pitch = clampf(camera.rotation.x, deg_to_rad(pitch_min_deg), deg_to_rad(pitch_max_deg))
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_apply_look()
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set_mouse_captured(true)
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func _unhandled_input(event: InputEvent) -> void:
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if event is InputEventMouseMotion and Input.mouse_mode == Input.MOUSE_MODE_CAPTURED:
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_yaw -= event.relative.x * mouse_sensitivity
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_pitch = clampf(
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_pitch - event.relative.y * mouse_sensitivity,
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deg_to_rad(pitch_min_deg),
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deg_to_rad(pitch_max_deg)
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)
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_apply_look()
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elif event.is_action_pressed("jump"):
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_jump_buffer = JUMP_BUFFER_TIME
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elif event.is_action_pressed("ui_cancel"):
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set_mouse_captured(Input.mouse_mode != Input.MOUSE_MODE_CAPTURED)
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elif event is InputEventMouseButton and event.pressed and Input.mouse_mode != Input.MOUSE_MODE_CAPTURED:
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set_mouse_captured(true)
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if event is InputEventMouseButton and event.is_action_pressed("carry"):
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if _pickObj == null:
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_pickObject()
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else:
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_removePickObject()
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func set_mouse_captured(captured: bool) -> void:
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Input.mouse_mode = Input.MOUSE_MODE_CAPTURED if captured else Input.MOUSE_MODE_VISIBLE
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## 把 _yaw / _pitch 落到节点上。鼠标一动就调一次（渲染帧），所以视角跟手、不等物理帧。
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## 身体跟着一起转 —— 第一人称里「你看哪，身体就朝哪」，别人看你也是这个朝向。
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func _apply_look() -> void:
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camera_rig.rotation.y = _yaw
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camera.rotation.x = _pitch
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body.rotation.y = _yaw
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func _physics_process(delta: float) -> void:
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# --- 重力 ---
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if is_on_floor():
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if velocity.y < 0.0:
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velocity.y = 0.0
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else:
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velocity.y -= _gravity * delta
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# --- 跳跃（读取输入缓冲）---
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if _jump_buffer > 0.0:
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_jump_buffer -= delta
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if is_on_floor():
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velocity.y = jump_velocity
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_jump_buffer = 0.0
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# --- 相对视线方向的水平输入 ---
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# 只用 rig 的 basis（只有 yaw），低头看地时前进方向不会跟着往下扎。
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var input_dir := Input.get_vector("move_left", "move_right", "move_back", "move_forward")
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var look_basis := camera_rig.global_transform.basis
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var wish := look_basis.x * input_dir.x - look_basis.z * input_dir.y
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wish.y = 0.0
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if wish.length_squared() > 0.000001:
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wish = wish.normalized()
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# 只有真正按了方向键才允许疾跑（避免原地"疾跑"触发跑动动画）
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var sprinting := Input.is_action_pressed("sprint") and input_dir.length_squared() > 0.000001
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var target_speed := sprint_speed if sprinting else walk_speed
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var accel := acceleration if is_on_floor() else air_acceleration
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var horizontal := Vector2(velocity.x, velocity.z)
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horizontal = horizontal.move_toward(Vector2(wish.x, wish.z) * target_speed, accel * delta)
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velocity.x = horizontal.x
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velocity.z = horizontal.y
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move_and_slide()
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# 动画只读运动结果。控制器不认识任何片段名，动画器也不认识输入。
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animator.set_motion(
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velocity,
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is_on_floor(),
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sprinting,
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Input.is_action_pressed("crouch"),
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)
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# 物体拖动
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if _pickObj != null:
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var pickObjPos = _pickObj.global_position
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var pickPlacePos = interaction_pos.global_position
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_pickObj.set_linear_velocity((pickPlacePos - pickObjPos) * _pickPower)
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func _pickObject() -> void:
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var pickCollider = interaction_ray.get_collider()
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print(pickCollider)
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if pickCollider != null and pickCollider is RigidBody3D:
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print(pickCollider)
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_pickObj = pickCollider
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func _removePickObject() -> void:
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_pickObj = null
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