99 lines
2.5 KiB
C#
99 lines
2.5 KiB
C#
using System.Collections;
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using UnityEngine;
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[RequireComponent(typeof(Rigidbody))]
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public class FireBallProjectile : MonoBehaviour
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{
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[Header("Damage & Effect")]
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public float damage = 20f;
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public GameObject explosionFx;
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[Header("Flight Settings")]
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public float flightTime = 1.2f; // 飞行总时间
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private Rigidbody rb;
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private bool hasHit = false; // 防止重复伤害
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void Awake()
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{
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rb = GetComponent<Rigidbody>();
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rb.useGravity = true;
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}
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/// <summary>
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/// 发射火球到目标位置，保证弧线落到 targetPos
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/// </summary>
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public void LaunchToTarget(Vector3 startPos, Vector3 targetPos, float flightTime)
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{
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transform.position = startPos;
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Vector3 velocity = CalculateVelocity(startPos, targetPos, flightTime);
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rb.velocity = velocity;
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}
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/// <summary>
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/// 计算抛物线初速度，保证 t 秒后落到 target
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/// </summary>
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private Vector3 CalculateVelocity(Vector3 start, Vector3 target, float time)
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{
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Vector3 displacement = target - start;
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// 水平位移
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Vector3 displacementXZ = new Vector3(displacement.x, 0, displacement.z);
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// 水平速度
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Vector3 velocityXZ = displacementXZ / time;
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// 垂直速度
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float velocityY = displacement.y / time - 0.5f * Physics.gravity.y * time;
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Vector3 result = velocityXZ + Vector3.up * velocityY;
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return result;
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}
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/// <summary>
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/// 设置伤害
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/// </summary>
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public void SetDamage(float curDamage)
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{
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damage = curDamage;
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}
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private void OnTriggerEnter(Collider other)
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{
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if (hasHit) return;
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if (other.CompareTag("Player"))
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{
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other.GetComponent<EnemyIDamagable>()?.ApplyDamage(damage, null, transform);
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hasHit = true;
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Explode();
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}
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}
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private void OnCollisionEnter(Collision collision)
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{
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if (hasHit) return;
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// 撞到玩家
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if (collision.gameObject.CompareTag("Player"))
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{
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collision.gameObject.GetComponent<EnemyIDamagable>()?.ApplyDamage(damage, null, transform);
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hasHit = true;
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}
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// 撞到地面或障碍物都爆炸
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Explode();
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}
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private void Explode()
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{
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if (explosionFx != null)
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{
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Instantiate(explosionFx, transform.position, Quaternion.identity);
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}
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Destroy(gameObject);
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}
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}
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