wc1 - 大学物理

wc1——大学物理播放幻灯片 | 文档首页文档目录
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public abstract class State {
    protected Enemy enemy;
    protected Transform player;
    
    public State(Enemy enemy, Transform player) {
        this.enemy = enemy;
        this.player = player;
    }
    
    protected Vector3 getRandomLocation(float radius) {
        return enemy.transform.position + new Vector3(
            Random.Range(radius * -1f, radius * 1f), 
            0f, 
            Random.Range(radius * -1f, radius * 1f));
    }
    
    public abstract State HandleInput();
    public abstract void DoAction();
    public virtual void Enter() {}
    public virtual void Exit() {}
}

// 示例子类实现
public class ChaseState : State {
    private float chaseSpeed = 5f;
    private float chaseDistanceThreshold = 10f;
    
    public ChaseState(Enemy enemy, Transform player) : base(enemy, player) {}
    
    public override void Enter() {
        Debug.Log("Entering Chase State");
        enemy.SetColor(Color.red); // 假设Enemy有这个方法
    }
    
    public override void DoAction() {
        // 向玩家移动
        Vector3 direction = (player.position - enemy.transform.position).normalized;
        enemy.transform.position += direction * chaseSpeed * Time.deltaTime;
        
        // 旋转面向玩家
        enemy.transform.LookAt(player);
    }
    
    public override State HandleInput() {
        // 如果玩家距离超过阈值，切换到巡逻状态
        if(Vector3.Distance(enemy.transform.position, player.position) > chaseDistanceThreshold) {
            return new PatrolState(enemy, player);
        }
        
        // 如果玩家在攻击范围内，切换到攻击状态
        if(Vector3.Distance(enemy.transform.position, player.position) < 2f) {
            return new AttackState(enemy, player);
        }
        
        return this;
    }
    
    public override void Exit() {
        Debug.Log("Exiting Chase State");
    }
}

public class PatrolState : State {
    private float patrolSpeed = 2f;
    private float patrolRadius = 5f;
    private Vector3 patrolTarget;
    
    public PatrolState(Enemy enemy, Transform player) : base(enemy, player) {
        patrolTarget = getRandomLocation(patrolRadius);
    }
    
    public override void Enter() {
        Debug.Log("Entering Patrol State");
        enemy.SetColor(Color.green);
    }
    
    public override void DoAction() {
        // 向巡逻目标移动
        Vector3 direction = (patrolTarget - enemy.transform.position).normalized;
        enemy.transform.position += direction * patrolSpeed * Time.deltaTime;
        
        // 如果到达目标点，获取新的巡逻点
        if(Vector3.Distance(enemy.transform.position, patrolTarget) < 0.5f) {
            patrolTarget = getRandomLocation(patrolRadius);
        }
    }
    
    public override State HandleInput() {
        // 如果玩家进入视野，切换到追逐状态
        if(Vector3.Distance(enemy.transform.position, player.position) < 5f) {
            return new ChaseState(enemy, player);
        }
        
        return this;
    }
    
    public override void Exit() {
        Debug.Log("Exiting Patrol State");
    }
}

public class AttackState : State {
    private float attackCooldown = 1f;
    private float lastAttackTime;
    
    public AttackState(Enemy enemy, Transform player) : base(enemy, player) {
        lastAttackTime = Time.time;
    }
    
    public override void Enter() {
        Debug.Log("Entering Attack State");
        enemy.SetColor(Color.yellow);
    }
    
    public override void DoAction() {
        // 攻击逻辑
        if(Time.time - lastAttackTime >= attackCooldown) {
            Debug.Log("Attacking Player!");
            lastAttackTime = Time.time;
        }
    }
    
    public override State HandleInput() {
        // 如果玩家距离过远，切换到追逐状态
        if(Vector3.Distance(enemy.transform.position, player.position) > 2f) {
            return new ChaseState(enemy, player);
        }
        
        return this;
    }
    
    public override void Exit() {
        Debug.Log("Exiting Attack State");
    }
}