Unity3D实现人物移动示例

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;
   }
  }
 }
}

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