Unity FPS 控制器

FPS（或 第一人称射击游戏）是从第一人称视角控制主角的游戏。

通常的控制方式是 W、A、S 和 D 行走、鼠标查看环顾四周、空格键跳跃、左 Shift 键冲刺，允许玩家在关卡中自由移动。

在这篇文章中，我将展示如何在 Unity 中制作一个 FPS 控制器来处理摄像机旋转和玩家移动。

步骤

要制作 FPS 控制器，请按照以下步骤操作：

• 创建一个新的游戏对象（GameObject -> Create Empty）并命名 "FPSPlayer"
• 创建一个新的胶囊（游戏对象 -> 3D 对象 -> 胶囊）并将其移动到 "FPSPlayer" 对象内
• 从 Capsule 中移除 Capsule Collider 组件，并将其位置改为 (0, 1, 0)
• 将主摄像机移至 "FPSPlayer" 对象内，并将其位置更改为 (0, 1.64, 0)

• 创建个新脚本，将其命名为"SC_FPSController"并将以下代码粘贴到其中：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[RequireComponent(typeof(CharacterController))]

public class SC_FPSController : MonoBehaviour
{
    public float walkingSpeed = 7.5f;
    public float runningSpeed = 11.5f;
    public float jumpSpeed = 8.0f;
    public float gravity = 20.0f;
    public Camera playerCamera;
    public float lookSpeed = 2.0f;
    public float lookXLimit = 45.0f;

    CharacterController characterController;
    Vector3 moveDirection = Vector3.zero;
    float rotationX = 0;

    [HideInInspector]
    public bool canMove = true;

    void Start()
    {
        characterController = GetComponent<CharacterController>();

        // Lock cursor
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;
    }

    void Update()
    {
        // We are grounded, so recalculate move direction based on axes
        Vector3 forward = transform.TransformDirection(Vector3.forward);
        Vector3 right = transform.TransformDirection(Vector3.right);
        // Press Left Shift to run
        bool isRunning = Input.GetKey(KeyCode.LeftShift);
        float curSpeedX = canMove ? (isRunning ? runningSpeed : walkingSpeed) * Input.GetAxis("Vertical") : 0;
        float curSpeedY = canMove ? (isRunning ? runningSpeed : walkingSpeed) * Input.GetAxis("Horizontal") : 0;
        float movementDirectionY = moveDirection.y;
        moveDirection = (forward * curSpeedX) + (right * curSpeedY);

        if (Input.GetButton("Jump") && canMove && characterController.isGrounded)
        {
            moveDirection.y = jumpSpeed;
        }
        else
        {
            moveDirection.y = movementDirectionY;
        }

        // Apply gravity. Gravity is multiplied by deltaTime twice (once here, and once below
        // when the moveDirection is multiplied by deltaTime). This is because gravity should be applied
        // as an acceleration (ms^-2)
        if (!characterController.isGrounded)
        {
            moveDirection.y -= gravity * Time.deltaTime;
        }

        // Move the controller
        characterController.Move(moveDirection * Time.deltaTime);

        // Player and Camera rotation
        if (canMove)
        {
            rotationX += -Input.GetAxis("Mouse Y") * lookSpeed;
            rotationX = Mathf.Clamp(rotationX, -lookXLimit, lookXLimit);
            playerCamera.transform.localRotation = Quaternion.Euler(rotationX, 0, 0);
            transform.rotation *= Quaternion.Euler(0, Input.GetAxis("Mouse X") * lookSpeed, 0);
        }
    }
}

• 将 SC_FPSController 脚本附加到"FPSPlayer"对象（您会注意到它还添加了另一个名为 Character Controller 的组件，将其中心值更改为 (0, 1, 0)）
• 将主摄像头分配给 SC_FPSController 中的玩家摄像头变量

FPS 控制器现已准备就绪！