Article directory
The final effect of this section
Preface
This section follows the previous one and mainly implements weapon functions.
melee weapons
Added Bullet, bullet script
public class Bullet : MonoBehaviour
{
public float damage; // 子弹的伤害值
/// <summary>
/// 初始化子弹的属性
/// </summary>
/// <param name="damage">伤害值</param>
public void Init(float damage)
{
this.damage = damage; // 设置子弹的伤害值
}
}
Added new melee weapon prefab, added triggers, mounting scripts, and configuration parameters
Modify Enemy enemy script and add trigger detection
void OnTriggerEnter2D(Collider2D collision)
{
if (!collision.CompareTag("Bullet")) return;
health -= collision.GetComponent<Bullet>().damage;
if (health > 0)
{
}
else
{
Dead();
}
}
void Dead()
{
gameObject.SetActive(false);
}
Effect, enemies die on contact
Control melee weapon spawning
Configure melee weapons into the object pool
Added Weapon. Control weapon/bullet generation
public class Weapon : MonoBehaviour
{
public int id; // 武器/子弹的ID
public int prefabId; // 武器/子弹预制体的ID
public float damage; // 武器/子弹的伤害值
public int count; // 发射武器/子弹的数量
public float speed; // 武器旋转的速度
void Start()
{
Init(); // 初始化武器属性
}
void Update()
{
switch (id)
{
case 0:
transform.Rotate(Vector3.back, speed * Time.deltaTime); // 绕z轴旋转武器
break;
default:
break;
}
}
/// <summary>
/// 初始化武器/子弹属性
/// </summary>
public void Init()
{
switch (id)
{
case 0:
speed = 150; // 设置武器旋转的速度
Batch();
break;
default:
break;
}
}
/// <summary>
/// 批量配置武器属性
/// </summary>
void Batch()
{
for (int index = 0; index < count; index++)
{
Transform bullet = GameManager.instance.pool.Get(prefabId).transform; // 从对象池中获取武器预制体的实例
bullet.parent = transform; // 设置武器的父级为武器
Vector3 rotvec = Vector3.forward * 360 * index / count; // 计算武器的旋转角度，使其均匀分布在圆周上
bullet.Rotate(rotvec); // 设置武器的旋转角度
bullet.Translate(bullet.up * 1.5f, Space.World); // 将武器沿着自身的y轴方向向前移动一定距离
bullet.GetComponent<Bullet>().Init(damage); // 初始化武器的属性
}
}
}
Mount configuration parameters
Single weapon effect
Multiple weapon effect
Upgrades increase weapon damage and quantity
Modify Weapon
void Update()
{
//。。。
//测试
if (Input.GetKeyDown(KeyCode.Space))
{
LevelUp(20, 5);
}
}
/// <summary>
/// 批量配置武器属性
/// </summary>
void Batch()
{
for (int index = 0; index < count; index++)
{
Transform bullet;
if (index < transform.childCount)
{
bullet = transform.GetChild(index);
}
else
{
bullet = GameManager.instance.pool.Get(prefabId).transform;// 从对象池中获取武器预制体的实例
bullet.parent = transform;// 设置武器的父级为武器
}
//。。。
}
}
Effect
Find the enemy closest to the protagonist
Add Scanner
public class Scanner : MonoBehaviour
{
public float scanRange; // 扫描范围
public LayerMask targetLayer; // 目标层
public RaycastHit2D[] targets; // 扫描到的目标
public Transform nearestTarget; // 最近的目标
void FixedUpdate()
{
targets = Physics2D.CircleCastAll(transform.position, scanRange, Vector2.zero, 0, targetLayer); // 在扫描范围内发射圆形光线，获取扫描到的目标
nearestTarget = GetNearest();
}
// 获取最近的目标
Transform GetNearest()
{
Transform result = null; // 初始化最近的目标为null
float diff = scanRange; // 初始化最小距离为100，用于后面比较
foreach (RaycastHit2D target in targets)
{
Vector3 myPos = transform.position; // 获取自身位置
Vector3 targetPos = target.transform.position; // 获取目标位置
float curDiff = Vector3.Distance(myPos, targetPos); // 计算自身与目标的距离
if (curDiff < diff) // 如果当前目标距离比之前的最小距离还小，说明这个目标更近
{
diff = curDiff; // 更新最小距离
result = target.transform; // 更新最近的目标
}
}
return result; // 返回最近的目标
}
//场景窗口可视化射线
private void OnDrawGizmos()
{
Gizmos.DrawWireSphere(transform.position, scanRange);
Gizmos.color = Color.red;
}
}
Mount script, configuration parameters
The effect is to obtain the enemy closest to you.
bullet prefab
Object pool mounted bullet
generate bullets
Modify Weapon
float timer;
Player player;
void Start()
{
player = GameManager.instance.player;
Init(); // 初始化武器属性
}
void Update()
{
switch (id)
{
//。。。
default:
timer += Time.deltaTime;
if (timer > speed)
{
timer = 0f;
Fire();
}
break;
}
}
/// <summary>
/// 初始化武器/子弹属性
/// </summary>
public void Init()
{
switch (id)
{
//。。。
default:
speed = 0.3f;
break;
}
}
//发射子弹
void Fire()
{
if (!player.scanner.nearestTarget) return;
Transform bullet = GameManager.instance.pool.Get(prefabId).transform;
bullet.position = transform.position;
}
Modify Player to obtain recent enemy data
[NonReorderable]
public Scanner scanner;
scanner = GetComponent<Scanner>();
Configure bullet generation container and data
Effect, generate a bullet every 0.3 seconds
fire bullets
Modify Bullet
Rigidbody2D rigid;
private int per; // 子弹的穿透次数
void Awake()
{
rigid = GetComponent<Rigidbody2D>(); // 获取子弹的刚体组件
}
public void Init(float damage, int per, Vector3 dir)
{
this.damage = damage; // 初始化子弹的伤害值
this.per = per; // 初始化子弹的穿透次数
if (per > -1)
{
rigid.velocity = dir * 15f; // 如果子弹具有穿透次数，则设置子弹的初始速度和方向
}
}
void OnTriggerEnter2D(Collider2D collision)
{
if (!collision.CompareTag("Enemy") || per == -1) return; // 如果碰撞物体不是敌人或子弹没有穿透次数，直接返回
per--; // 穿透次数减一
if (per == -1)
{
rigid.velocity = Vector2.zero; // 如果穿透次数减到-1，即没有穿透能力了，将子弹的速度设为零
gameObject.SetActive(false); // 将子弹设为非激活状态，使其隐藏或回收
}
}
Modify Weapon
void Batch()
{
//。。。
bullet.GetComponent<Bullet>().Init(damage, -1, Vector3.zero); // 初始化武器的属性
}
}
// 发射子弹
void Fire()
{
if (!player.scanner.nearestTarget) return; // 如果玩家的扫描器没有最近的目标，直接返回
Vector3 targetPos = player.scanner.nearestTarget.position; // 获取最近目标的位置
Vector3 dir = targetPos - transform.position; // 计算从当前位置指向目标位置的方向向量
dir = dir.normalized; // 将方向向量归一化，使其成为单位向量
Transform bullet = GameManager.instance.pool.Get(prefabId).transform; // 从对象池中获取一个子弹对象
bullet.position = transform.position; // 设置子弹的初始位置为当前位置
bullet.rotation = Quaternion.FromToRotation(Vector3.up, dir); // 将子弹的朝向调整为指向目标位置的方向
bullet.GetComponent<Bullet>().Init(damage, count, dir); // 初始化子弹的伤害值、穿透次数和初始速度方向
}
Effect
Modify Weapon and upgrade testing
//测试
if (Input.GetKeyDown(KeyCode.Space))
{
LevelUp(10, 1);
}
The effect is that after the upgrade, the bullet has a certain degree of penetration.
reference
【Video】https://www.youtube.com/watch?v=MmW166cHj54&list=PLO-mt5Iu5TeZF8xMHqtT_DhAPKmjF6i3x
Source code
Source code is in the last section
end
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