using UnityEngine;

public class CraneController : MonoBehaviour
{
    public static CraneController Instance;
    [Header("物体")]
    public Transform bridge;  // 横杆
    public Transform hook;    // 滑轮
    public SkinnedMeshRenderer hookRenderer;//吊钩

    [Header("移动速度")]
    [Range(1, 10)]
    public float bridgeSpeed = 5f; // 横杆移动速度
    [Range(1, 10)]
    public float hookSpeed = 5f;   // 滑轮移动速度

    public float blendShapeSpeed = 30f;

    [Header("移动范围限制 (Z轴)")]
    [Range(-1, -20)]
    public float bridgeMinZ = -5f;
    [Range(1, 20)]
    public float bridgeMaxZ = 5f;
    [Range(-1, 5)]
    public float hookMinZ = -3f;
    [Range(1, 5)]
    public float hookMaxZ = 3f;

    [Header("BlendShape设置")]
    public int hookBlendShapeIndex = 0;  // BlendShape索引（通常是0）
    public float minBlendShapeValue = 0f;   // 吊钩收起
    public float maxBlendShapeValue = 100f; // 吊钩放下

    private float currentBlendValue = 0f;

    private float baseColliderZ;

    private float Max = 0f;
    private float Min = 0f;

    public BoxCollider hookCollider; //钩子的碰撞

    private void Awake()
    {
        Instance = this;
    }
    public void Start()
    {
        Max = -(2.49513f - 0.5113189f) / 100;
        Min = (6.295807f - 0.3099952f) / 100;
    }
    // Update is called once per frame
    void Update()
    {
        HandleBridgeMovement();
        HandleHookMovement();
        HandleHookLift();
        hookSize();
    }

    void HandleBridgeMovement()
    {
        // I/K 控制横杆前后
        float input = 0;
        if (Input.GetKey(KeyCode.I))
            input = 1;
        else if (Input.GetKey(KeyCode.K))
            input = -1;
        Vector3 newPos = bridge.position + Vector3.forward * input * bridgeSpeed * Time.deltaTime;
        newPos.z = Mathf.Clamp(newPos.z, bridgeMinZ, bridgeMaxZ);
        bridge.position = newPos;
    }

    void HandleHookMovement()
    {
        // J/L 控制滑轮前后
        float input = 0;
        if (Input.GetKey(KeyCode.J))
            input = 1;
        else if (Input.GetKey(KeyCode.L))
            input = -1;
        Vector3 newPos = hook.position + Vector3.left * input * hookSpeed * Time.deltaTime;
        newPos.x = Mathf.Clamp(newPos.x, hookMinZ, hookMaxZ);
        hook.position = newPos;
    }

    void HandleHookLift()
    {
        if (hookRenderer == null)
            return;

        float input = 0;
        if (Input.GetKey(KeyCode.U))
            input = 1; // 上升
        else if (Input.GetKey(KeyCode.O))
            input = -1; // 下降

        currentBlendValue += input * blendShapeSpeed * Time.deltaTime;
        currentBlendValue = Mathf.Clamp(currentBlendValue, minBlendShapeValue, maxBlendShapeValue);

        hookRenderer.SetBlendShapeWeight(hookBlendShapeIndex, currentBlendValue);
    }
    public void hookSize()
    {
        if (hookCollider != null)
        {
            hookCollider.center = new Vector3(-0.1262663f, -0.01883008f, -0.5113189f + currentBlendValue * Max);
            hookCollider.size = new Vector3(0.1096101f, 0.2627291f, 0.3099952f + currentBlendValue * Min);
        }
    }
}