角色移动逻辑修改技术需求：碰撞方块后切换Rigidbody.isKinematic属性并设置3秒无敌状态

Hey there! Let's walk through how to build this collision and invincibility system for your character—super straightforward once you break it down:

• Listen for collision events between your character and the target block
• Use a coroutine to handle the 3-second delay (avoids blocking the main thread)
• Add a boolean flag to track invincibility status, preventing duplicate triggers during the cooldown

Assuming your character has a Rigidbody and collider (like a CapsuleCollider), and your block has a collider (either standard or set to trigger):

using UnityEngine;
using System.Collections;

public class PlayerCollisionHandler : MonoBehaviour
{
    private Rigidbody _playerRigidbody;
    private bool _isInvincible = false;
    [SerializeField] private float invincibilityLength = 3f;

    private void Awake()
    {
        // Grab the character's Rigidbody component on start
        _playerRigidbody = GetComponent<Rigidbody>();
    }

    // Use this if your block uses a standard (non-trigger) collider
    private void OnCollisionEnter(Collision collision)
    {
        // Check if we hit the damage block AND we're not already invincible
        if (collision.gameObject.CompareTag("DamageBlock") && !_isInvincible)
        {
            ActivateInvincibility();
        }
    }

    // Use this if your block uses a trigger collider (tick "Is Trigger" on its collider)
    private void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.CompareTag("DamageBlock") && !_isInvincible)
        {
            ActivateInvincibility();
        }
    }

    private void ActivateInvincibility()
    {
        // Freeze physics by setting kinematic to true
        _playerRigidbody.isKinematic = true;
        _isInvincible = true;

        // Start the coroutine to reset status after the delay
        StartCoroutine(ResetInvincibility());
    }

    private IEnumerator ResetInvincibility()
    {
        // Wait the specified invincibility duration
        yield return new WaitForSeconds(invincibilityLength);

        // Re-enable physics and remove invincibility
        _playerRigidbody.isKinematic = false;
        _isInvincible = false;
    }
}

• Tag Setup: Make sure your damage block has a unique tag (like "DamageBlock") so the script only reacts to the right objects
• Coroutine Flexibility: Using a coroutine instead of Invoke lets you easily add extra logic later (like visual effects for invincibility, or canceling the cooldown early)
• Invincibility Flag: The _isInvincible variable prevents the collision logic from firing multiple times while the cooldown is active—critical for avoiding broken state
• Movement Adjustment: If you want the character to keep moving while invincible, you can control their position directly via Transform instead of relying on physics, or adjust Rigidbody constraints instead of setting isKinematic

内容的提问来源于stack exchange，提问作者Cliver Raimundo