我想创建一个游戏，在其中可以左右移动盒子以避免掉落盒子，并且它可以工作，但是问题是当我将手指放在一个位置时，玩家盒子就会左右晃动。您可以在此gif http://gfycat.com/FragrantBrokenEyas上看到它。这是C＃脚本的代码
using UnityEngine;
using System.Collections;
public class PlayerMovement : MonoBehaviour {
private Camera m_cam;
private float m_offsetRight = 1.0F;
private float m_offsetLeft = 0.0F;
void Awake() {
m_cam = Camera.main;
}
void Update () {
rigidbody2D.velocity = new Vector2(0 * 10, 0);
Move ();
}
void Move () {
if (Application.platform == RuntimePlatform.Android) {
Vector3 player_pos = m_cam.WorldToViewportPoint(rigidbody2D.position);
Vector3 touch_pos = new Vector3(Input.GetTouch(0).position.x, 0, 0);
touch_pos = Camera.main.ScreenToViewportPoint(touch_pos);
if(touch_pos.x > player_pos.x)
rigidbody2D.velocity = new Vector2(1 * 10, 0);
else if (touch_pos.x < player_pos.x)
rigidbody2D.velocity = new Vector2(-1 * 10, 0);
}
else{
Vector3 player_pos = m_cam.WorldToViewportPoint(rigidbody2D.position);
float h = Input.GetAxis ("Horizontal");
if (h > 0 && player_pos.x < m_offsetRight)
rigidbody2D.velocity = new Vector2(h * 10, 0);
else if (h < 0 && player_pos.x > m_offsetLeft)
rigidbody2D.velocity = new Vector2(h * 10, 0);
else
rigidbody2D.velocity = new Vector2(0, rigidbody2D.velocity.y);
}
}
void OnTriggerEnter2D(Collider2D other) {
if (other.gameObject.name == "Enemy(Clone)") {
Destroy(other.gameObject);
GameSetUp.score -= 2;
} else if (other.gameObject.name == "Coin(Clone)") {
GameSetUp.score += 2;
Destroy(other.gameObject);
}
}
}
我认为问题出在这里：
touch_pos = Camera.main.ScreenToViewportPoint(touch_pos);
if(touch_pos.x > player_pos.x)
rigidbody2D.velocity = new Vector2(1 * 10, 0);
else if (touch_pos.x < player_pos.x)
rigidbody2D.velocity = new Vector2(-1 * 10, 0);
该“一个位置”可能是触摸的x坐标与播放器框的x坐标大致相同的位置。
当手指按下该区域时，在第一帧上touch_pos.x > player_pos.x为真，速度设置为正。在下一帧上，播放器已朝正方向移动，这次touch_pos.x < player_pos.x是真实的，速度设置为负。这导致震动效果。
为了避免这种情况，您可以例如缓慢地增加和减少速度，而不是在一帧中完全将其更改为相反的速度。您可以通过将代码更改为此：
touch_pos = Camera.main.ScreenToViewportPoint(touch_pos);
const float acceleration = 60.0f;
const float maxSpeed = 10.0f;
if(touch_pos.x > player_pos.x)
if(rigidbody2D.velocity.x < maxSpeed)
rigidbody2D.velocity = new Vector2(rigidbody2D.velocity.x + acceleration * Time.deltaTime, 0);
else
rigidbody2D.velocity = new Vector2(maxSpeed, 0);
else if (touch_pos.x < player_pos.x)
if(rigidbody2D.velocity.x > -maxSpeed)
rigidbody2D.velocity = new Vector2(rigidbody2D.velocity.x - acceleration * Time.deltaTime , 0);
else
rigidbody2D.velocity = new Vector2(-maxSpeed, 0);
只需将其调整为acceleration看起来正确的值即可。
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我来说两句