Unity3D 示例——人物移动

一个是通过W、A、S、D来移动人物（示例一），另个是按屏幕上的按钮来移动人物（示例二）。很简单，只改了几行代码。

下面是“Assets”文件夹里面的资源。

 

示例一：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class E3_07keyboard : MonoBehaviour
{
    //动画数组
    private Object[] animUp;
    private Object[] animDown;
    private Object[] animLeft;
    private Object[] animRight;
    //地图贴图
    private Texture2D map;
    //当前人物动画
    private Object[] tex;
    //人物X坐标
    private int x;
    //人物Y坐标
    private int y;
    //帧序列
    private int nowFram;
    //动画帧的总数
    private int mFrameCount;
    //限制一秒多少帧
    private float fps = 5;
    //限制帧的时间 
    private float time = 0;
    void Start()
    {
        //得到帧动画中的所有图片资源
        animUp = Resources.LoadAll("up");
        animDown = Resources.LoadAll("down");
        animLeft = Resources.LoadAll("left");
        animRight = Resources.LoadAll("right");
        //得到地图资源
        map = (Texture2D)Resources.Load("map/map");
        //设置默认动画
        tex = animUp;
    }

    void OnGUI()
    {
        //绘制贴图
        GUI.DrawTexture(new Rect(0, 0, Screen.width, Screen.height), map, ScaleMode.StretchToFill, true, 0);

        //绘制帧动画
        DrawAnimation(tex, new Rect(x, y, 32, 48));

        //点击按钮移动人物
        if (Input.GetKey(KeyCode.W))
        {
            y -= 2;
            tex = animUp;
        }
        if (Input.GetKey(KeyCode.S))
        {
            y += 2;
            tex = animDown;
        }
        if (Input.GetKey(KeyCode.A))
        {
            x -= 2;
            tex = animLeft;
        }
        if (Input.GetKey(KeyCode.D))
        {
            x += 2;
            tex = animRight;
        }
    }


    void DrawAnimation(Object[] tex, Rect rect)
    {
        //绘制当前帧
        GUI.DrawTexture(rect, (Texture)tex[nowFram], ScaleMode.StretchToFill, true, 0);
        //计算限制帧时间
        time += Time.deltaTime;
        //超过限制帧则切换图片
        if (time >= 1.0 / fps)
        {
            //帧序列切换
            nowFram++;
            //限制帧清空
            time = 0;
            //超过帧动画总数从第0帧开始
            if (nowFram >= tex.Length)
            {
                nowFram = 0;
            }
        }
    }
}

 

示例二

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class E3_07button : MonoBehaviour
{
    //动画数组
    private Object[] animUp;
    private Object[] animDown;
    private Object[] animLeft;
    private Object[] animRight;
    //地图贴图
    private Texture2D map;
    //当前人物动画
    private Object[] tex;
    //人物X坐标
    private int x;
    //人物Y坐标
    private int y;
    //帧序列
    private int nowFram;
    //动画帧的总数
    private int mFrameCount;
    //限制一秒多少帧
    private float fps = 5;
    //限制帧的时间 
    private float time = 0;
    void Start()
    {
        //得到帧动画中的所有图片资源
        animUp = Resources.LoadAll("up");
        animDown = Resources.LoadAll("down");
        animLeft = Resources.LoadAll("left");
        animRight = Resources.LoadAll("right");
        //得到地图资源
        map = (Texture2D)Resources.Load("map/map");
        //设置默认动画
        tex = animUp;
    }

    void OnGUI()
    {
        //绘制贴图
        GUI.DrawTexture(new Rect(0, 0, Screen.width, Screen.height), map, ScaleMode.StretchToFill, true, 0);

        //绘制帧动画
        DrawAnimation(tex, new Rect(x, y, 32, 48));

        //点击按钮移动人物
        if (GUILayout.RepeatButton("向上"))
        {
            y -= 2;
            tex = animUp;
        }
        if (GUILayout.RepeatButton("向下"))
        {
            y += 2;
            tex = animDown;
        }
        if (GUILayout.RepeatButton("向左"))
        {
            x -= 2;
            tex = animLeft;
        }
        if (GUILayout.RepeatButton("向右"))
        {
            x += 2;
            tex = animRight;
        }
    }


    void DrawAnimation(Object[] tex, Rect rect)
    {
        //绘制当前帧
        GUI.DrawTexture(rect, (Texture)tex[nowFram], ScaleMode.StretchToFill, true, 0);
        //计算限制帧时间
        time += Time.deltaTime;
        //超过限制帧则切换图片
        if (time >= 1.0 / fps)
        {
            //帧序列切换
            nowFram++;
            //限制帧清空
            time = 0;
            //超过帧动画总数从第0帧开始
            if (nowFram >= tex.Length)
            {
                nowFram = 0;
            }
        }
    }
}