unity3d—demo(2d人物左右移动发射子弹)

目录

人物代码示例：

子弹代码示例：

总结上面代码：

注意点：

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人物代码示例：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class PlayerTiao : MonoBehaviour
{public float moveSpeed = 10f;private float h;private SpriteRenderer sr;void Start(){sr = this.GetComponent<SpriteRenderer>();}void Update(){h = Input.GetAxis("Horizontal");this.transform.Translate(moveSpeed * Time.deltaTime * Vector3.right *  h);if(h < 0){sr.flipX = true;}else if(h > 0){sr.flipX = false;}if(Input.GetKeyDown(KeyCode.Space)){GameObject obj = Instantiate(Resources.Load<GameObject>("BulletObj"),this.transform.position + new Vector3(sr.flipX ? -0.3f : 0.3f,0.5f,0),Quaternion.identity);obj.GetComponent<Bullet>().ChangeDir(sr.flipX ? Vector3.left : Vector3.right);}}
}

子弹代码示例：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class Bullet : MonoBehaviour
{public float moveSpeed = 5f;private Vector3 nowDir;void Start(){Destroy(this.gameObject, 3f);}public void ChangeDir(Vector3 dir){nowDir = dir;}void Update(){this.transform.Translate(moveSpeed * Time.deltaTime * nowDir);}
}

总结上面代码：

this.transform.Translate(moveSpeed * Time.deltaTime * nowDir);   transform是属性 获取Transform组件  Translate是Transfor组件方法函数  

预设体 是 GameObject 类型

注意点：