我们看下枪械系统要做的功能列表
以上的功能列表还可以进一步拆分为如下
我们先看一下填弹的功能实现图
按键填弹实现
我们先实现按下R键，发送ReloadCommand来填弹
我们在Command文件夹里新建ReloadCommand文件
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| using FrameWorkDesign;
namespace ShootingEditor2D
{
public class ReloadCommand : AbstractCommand
{
protected override void OnExecute()
{
var currentGun = this.GetSystem<IGunSystem>().CurrentGun;
var gunConfigItem = this.GetModel<IGunConfigModel>().GetItemByName(currentGun.Name.Value);
var needBulletCount = gunConfigItem.BulletMaxCount - currentGun.AmmoNumInGun.Value;
if (needBulletCount > 0)
{
currentGun.State.Value = GunState.Reload;
this.GetSystem<ITimeSystem>().AddTaskDelay(gunConfigItem.ReloadSeconds, () =>
{
if (currentGun.BulletCountOutGun.Value > 0)
{
if (currentGun.BulletCountOutGun.Value >= needBulletCount)
{
currentGun.AmmoNumInGun.Value += needBulletCount;
currentGun.BulletCountOutGun.Value -= needBulletCount;
}
else
{
currentGun.AmmoNumInGun.Value += currentGun.BulletCountOutGun.Value;
currentGun.BulletCountOutGun.Value = 0;
}
}
currentGun.State.Value = GunState.Idle;
});
}
}
}
}
|
接下来，我们修改Gun脚本，为它添加Reload方法
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| using UnityEngine;
using FrameWorkDesign;
namespace ShootingEditor2D
{
public class Gun : MonoBehaviour,IController
{
private Bullet m_Bullet;
private GunInfo m_GunInfo;
private int mMaxBulletCount;
private void Awake()
{
m_Bullet = transform.Find("Bullet").GetComponent<Bullet>();
m_GunInfo = this.GetSystem<IGunSystem>().CurrentGun;
mMaxBulletCount = this.SendQuery(new MaxBulletCountQuery(m_GunInfo.Name.Value));
}
public void Reload()
{
if (m_GunInfo.State.Value == GunState.Idle &&
m_GunInfo.AmmoNumInGun.Value != mMaxBulletCount &&
m_GunInfo.BulletCountOutGun.Value > 0)
{
this.SendCommand<ReloadCommand>();
}
}
}
}
|
修改Player脚本，添加R键的监听
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| using UnityEngine;
namespace ShootingEditor2D
{
public class Player : MonoBehaviour
{
private void Update()
{
if(Input.GetButtonDown("Jump"))
m_JumpPressed = true;
if (Input.GetKeyDown(KeyCode.J))
{
m_Gun.Shoot();
}
if (Input.GetKeyDown(KeyCode.R))
{
m_Gun.Reload();
}
}
}
}
|
注意这里的编程实践，我们把大部分的按键监听都放在了Palyer脚本里，避免在其他脚本中（比如Gun脚本）调用Update生命周期函数（来监听按键等）。
自动填弹实现
我们直接按照功能实现图里设计的，在ShootCommand里面能够进行子弹判断并发送ReloadCommand，我们在每次子弹射击完之后加一个判断
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| using FrameWorkDesign;
namespace ShootingEditor2D
{
public class ShootCommand : AbstractCommand
{
public static readonly ShootCommand Instance = new ShootCommand();
protected override void OnExecute()
{
var gunSystem = this.GetSystem<IGunSystem>();
gunSystem.CurrentGun.AmmoNumInGun.Value--;
gunSystem.CurrentGun.State.Value = GunState.Shooting;
var gunConfigItem = this.GetModel<IGunConfigModel>().GetItemByName(gunSystem.CurrentGun.Name.Value);
var timeSystem = this.GetSystem<ITimeSystem>();
timeSystem.AddTaskDelay( 1/gunConfigItem.Frequency, () =>
{
gunSystem.CurrentGun.State.Value = GunState.Idle;
if (gunSystem.CurrentGun.AmmoNumInGun.Value == 0 && gunSystem.CurrentGun.BulletCountOutGun.Value > 0)
{
this.SendCommand<ReloadCommand>();
}
});
}
}
}
|
Command嵌套复用和Query的嵌套复用是此框架的特色之一，要留意
