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Unity3D游戏引擎之FBX模型载入与人物行走动画播放

由于作者手头上没有现成的模型，所以我将在Unity3D 官网中下载官方提供的游戏DEMO 中的模型来使用。另外官方提供了很多Unity3D 游戏DEMO,与详细的文档。可以帮助我们学习Unity.有兴趣的盆友可以去看看哈。

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下载页面：http://unity3d.com/support/resources/  

本章博文的目的是利用上一章介绍的游戏摇杆来控制人物模型的移动，与行走动画的播放。

 

如上图所示Create中的文件夹male中存放着模型动画与贴图等，这个应该是美术提供给我们的。然后将整个male用鼠标拖动到左侧3D世界中，通过移动，旋转，缩放将人物模型放置在一个理想的位置。右侧红框内设置模型动画的属性。

Animation  

        idle1  该模型默认动画名称为idle1

Animations 

        size   该模型动画的数量

        Element 该模型的动画名称

Play Automatically 是否自动播放

Animation Physics 是否设置该模型物理碰撞

Animation Only if Visable 是否设置该模型仅自己显示

给该模型绑定一个脚本Controller.cs 用来接收摇杆返回的信息更新模型动画。

Controller.cs

[代码]c#/cpp/oc代码：

001using UnityEngine; 
002using System.Collections; 
003   
004   
005   
006public class Controller : MonoBehaviour { 
007       
008    //人物的行走方向状态 
009    public const int HERO_UP= 0; 
010    public const int HERO_RIGHT= 1; 
011    public const int HERO_DOWN= 2; 
012    public const int HERO_LEFT= 3; 
013       
014    //人物当前行走方向状态 
015    public int state = 0; 
016       
017    //备份上一次人物当前行走方向状态 
018    //这里暂时没有用到 
019    public int backState = 0; 
020       
021    //游戏摇杆对象 
022    public MPJoystick moveJoystick;   
023       
024    //这个方法只调用一次，在Start方法之前调用 
025    public void Awake() { 
026           
027    } 
028       
029    //这个方法只调用一次，在Awake方法之后调用 
030    void Start () { 
031        state = HERO_DOWN; 
032    } 
033       
034       
035    void Update () { 
036       
037    //获取摇杆控制的方向数据 上一章有详细介绍   
038    float touchKey_x =  moveJoystick.position.x;   
039    float touchKey_y =  moveJoystick.position.y;   
040           
041         
042        
043    if(touchKey_x == -1){   
044       setHeroState(HERO_LEFT); 
045             
046    }else if(touchKey_x == 1){   
047       setHeroState(HERO_RIGHT); 
048             
049    }   
050        
051    if(touchKey_y == -1){   
052        setHeroState(HERO_DOWN); 
053    
054    }else if(touchKey_y == 1){   
055        setHeroState(HERO_UP);          
056    }   
057       
058    if(touchKey_x == 0 && touchKey_y ==0){ 
059        //松开摇杆后播放默认动画， 
060        //不穿参数为播放默认动画。 
061        animation.Play(); 
062    } 
063       
064           
065    } 
066       
067    public void setHeroState(int newState) 
068    { 
069           
070        //根据当前人物方向 与上一次备份方向计算出模型旋转的角度 
071        int rotateValue = (newState - state) * 90; 
072        Vector3 transformValue = new Vector3(); 
073           
074        //播放行走动画 
075        animation.Play("walk"); 
076           
077        //模型移动的位移的数值 
078        switch(newState){ 
079            case HERO_UP: 
080                transformValue = Vector3.forward * Time.deltaTime; 
081            break;   
082            case HERO_DOWN: 
083                transformValue = -Vector3.forward * Time.deltaTime; 
084            break;   
085            case HERO_LEFT: 
086                transformValue = Vector3.left * Time.deltaTime; 
087                   
088            break;   
089            case HERO_RIGHT: 
090                transformValue = -Vector3.left * Time.deltaTime; 
091            break;               
092        } 
093           
094           
095        //模型旋转 
096        transform.Rotate(Vector3.up, rotateValue); 
097           
098        //模型移动 
099        transform.Translate(transformValue, Space.World); 
100           
101        backState = state; 
102        state = newState; 
103           
104    } 
105       
106}

上一章介绍了javaScript脚本使用游戏摇杆的方法，本章MOMO告诉大家使用C＃脚本来使用游戏摇杆，上面我用 Controller.cs  C＃脚本来接收系统提供的Joystick.js是肯定无法使用的，须要修改成.cs文件，我在国外的一个网站上看到了一个老外帮我们已经修改了，那么我将他修改后的代码贴出来方便大家学习，有兴趣的朋友可以研究研究。 

MPJoystick.cs

 [代码]c#/cpp/oc代码：

001using UnityEngine;  
002   
003/**
004  
005 * File: MPJoystick.cs
006  
007 * Author: Chris Danielson of (monkeyprism.com)
008  
009 * 
010  
011// USED TO BE: Joystick.js taken from Penelope iPhone Tutorial
012  
013//
014  
015// Joystick creates a movable joystick (via GUITexture) that 
016  
017// handles touch input, taps, and phases. Dead zones can control
018  
019// where the joystick input gets picked up and can be normalized.
020  
021//
022  
023// Optionally, you can enable the touchPad property from the editor
024  
025// to treat this Joystick as a TouchPad. A TouchPad allows the finger
026  
027// to touch down at any point and it tracks the movement relatively 
028  
029// without moving the graphic
030  
031*/ 
032[RequireComponent(typeof(GUITexture))] 
033   
034public class MPJoystick : MonoBehaviour 
035   
036{ 
037   
038class Boundary { 
039   
040public Vector2 min = Vector2.zero; 
041   
042public Vector2 max = Vector2.zero; 
043   
044} 
045private static MPJoystick[] joysticks;   // A static collection of all joysticks 
046   
047private static bool enumeratedJoysticks = false; 
048   
049private static float tapTimeDelta = 0.3f;    // Time allowed between taps 
050public bool touchPad; 
051   
052public Vector2 position = Vector2.zero; 
053   
054public Rect touchZone; 
055   
056public Vector2 deadZone = Vector2.zero;  // Control when position is output 
057   
058public bool normalize = false; // Normalize output after the dead-zone? 
059   
060public int tapCount;      
061   
062private int lastFingerId = -1;   // Finger last used for this joystick 
063   
064private float tapTimeWindow;     // How much time there is left for a tap to occur 
065   
066private Vector2 fingerDownPos; 
067   
068//private float fingerDownTime; 
069   
070//private float firstDeltaTime = 0.5f; 
071private GUITexture gui; 
072   
073private Rect defaultRect;    // Default position / extents of the joystick graphic 
074   
075private Boundary guiBoundary = new Boundary();   // Boundary for joystick graphic 
076   
077private Vector2 guiTouchOffset;  // Offset to apply to touch input 
078   
079private Vector2 guiCenter;   // Center of joystick 
080void Start() { 
081   
082gui = (GUITexture)GetComponent(typeof(GUITexture)); 
083defaultRect = gui.pixelInset; 
084   
085defaultRect.x += transform.position.x * Screen.width;// + gui.pixelInset.x; // -  Screen.width * 0.5; 
086   
087        defaultRect.y += transform.position.y * Screen.height;// - Screen.height * 0.5; 
088transform.position = Vector3.zero; 
089if (touchPad) { 
090   
091// If a texture has been assigned, then use the rect ferom the gui as our touchZone 
092   
093if ( gui.texture ) 
094   
095touchZone = defaultRect; 
096   
097} else { 
098   
099guiTouchOffset.x = defaultRect.width * 0.5f; 
100   
101guiTouchOffset.y = defaultRect.height * 0.5f; 
102// Cache the center of the GUI, since it doesn't change 
103   
104guiCenter.x = defaultRect.x + guiTouchOffset.x; 
105   
106guiCenter.y = defaultRect.y + guiTouchOffset.y; 
107// Let's build the GUI boundary, so we can clamp joystick movement 
108   
109guiBoundary.min.x = defaultRect.x - guiTouchOffset.x; 
110   
111guiBoundary.max.x = defaultRect.x + guiTouchOffset.x; 
112   
113guiBoundary.min.y = defaultRect.y - guiTouchOffset.y; 
114   
115guiBoundary.max.y = defaultRect.y + guiTouchOffset.y; 
116   
117} 
118   
119} 
120public Vector2 getGUICenter() { 
121   
122return guiCenter; 
123   
124} 
125void Disable() { 
126   
127gameObject.active = false; 
128   
129//enumeratedJoysticks = false; 
130   
131} 
132private void ResetJoystick() { 
133   
134gui.pixelInset = defaultRect; 
135   
136lastFingerId = -1; 
137   
138position = Vector2.zero; 
139   
140fingerDownPos = Vector2.zero; 
141   
142} 
143private bool IsFingerDown() { 
144   
145return (lastFingerId != -1); 
146   
147} 
148public void LatchedFinger(int fingerId) { 
149   
150// If another joystick has latched this finger, then we must release it 
151   
152if ( lastFingerId == fingerId ) 
153   
154ResetJoystick(); 
155   
156} 
157void Update() { 
158   
159if (!enumeratedJoysticks) { 
160   
161// Collect all joysticks in the game, so we can relay finger latching messages 
162   
163joysticks = (MPJoystick[])FindObjectsOfType(typeof(MPJoystick)); 
164   
165enumeratedJoysticks = true; 
166   
167} 
168int count = Input.touchCount; 
169if ( tapTimeWindow > 0 ) 
170   
171tapTimeWindow -= Time.deltaTime; 
172   
173else 
174   
175tapCount = 0; 
176if ( count == 0 ) 
177   
178ResetJoystick(); 
179   
180else 
181   
182{ 
183   
184for(int i = 0; i < count; i++) { 
185   
186Touch touch = Input.GetTouch(i); 
187   
188Vector2 guiTouchPos = touch.position - guiTouchOffset; 
189bool shouldLatchFinger = false; 
190   
191if (touchPad) { 
192   
193if (touchZone.Contains(touch.position)) 
194   
195shouldLatchFinger = true; 
196   
197} 
198   
199else if (gui.HitTest(touch.position)) { 
200   
201shouldLatchFinger = true; 
202   
203} 
204// Latch the finger if this is a new touch 
205   
206if (shouldLatchFinger && (lastFingerId == -1 || lastFingerId != touch.fingerId )) { 
207if (touchPad) { 
208   
209//gui.color.a = 0.15; 
210   
211lastFingerId = touch.fingerId; 
212   
213//fingerDownPos = touch.position; 
214   
215//fingerDownTime = Time.time; 
216   
217} 
218lastFingerId = touch.fingerId; 
219   
220    
221   
222// Accumulate taps if it is within the time window 
223   
224if ( tapTimeWindow > 0 ) 
225   
226tapCount++; 
227   
228else { 
229   
230tapCount = 1; 
231   
232tapTimeWindow = tapTimeDelta; 
233   
234} 
235// Tell other joysticks we've latched this finger 
236   
237//for (  j : Joystick in joysticks ) 
238   
239foreach (MPJoystick j in joysticks) { 
240   
241if (j != this)  
242   
243j.LatchedFinger( touch.fingerId ); 
244   
245} 
246   
247}    
248if ( lastFingerId == touch.fingerId ) { 
249   
250// Override the tap count with what the iPhone SDK reports if it is greater 
251   
252// This is a workaround, since the iPhone SDK does not currently track taps 
253   
254// for multiple touches 
255   
256if ( touch.tapCount > tapCount ) 
257   
258tapCount = touch.tapCount; 
259if ( touchPad ) { 
260   
261// For a touchpad, let's just set the position directly based on distance from initial touchdown 
262   
263position.x = Mathf.Clamp( ( touch.position.x - fingerDownPos.x ) / ( touchZone.width / 2 ), -1, 1 ); 
264   
265position.y = Mathf.Clamp( ( touch.position.y - fingerDownPos.y ) / ( touchZone.height / 2 ), -1, 1 ); 
266   
267} else { 
268   
269// Change the location of the joystick graphic to match where the touch is 
270   
271Rect r = gui.pixelInset; 
272   
273r.x =  Mathf.Clamp( guiTouchPos.x, guiBoundary.min.x, guiBoundary.max.x ); 
274   
275r.y =  Mathf.Clamp( guiTouchPos.y, guiBoundary.min.y, guiBoundary.max.y ); 
276   
277gui.pixelInset = r; 
278   
279} 
280if (touch.phase == TouchPhase.Ended || touch.phase == TouchPhase.Canceled) 
281   
282ResetJoystick(); 
283   
284} 
285   
286} 
287   
288} 
289if (!touchPad) { 
290   
291// Get a value between -1 and 1 based on the joystick graphic location 
292   
293position.x = ( gui.pixelInset.x + guiTouchOffset.x - guiCenter.x ) / guiTouchOffset.x; 
294   
295position.y = ( gui.pixelInset.y + guiTouchOffset.y - guiCenter.y ) / guiTouchOffset.y; 
296   
297} 
298// Adjust for dead zone 
299   
300var absoluteX = Mathf.Abs( position.x ); 
301   
302var absoluteY = Mathf.Abs( position.y ); 
303   
304    
305   
306if (absoluteX < deadZone.x) { 
307   
308// Report the joystick as being at the center if it is within the dead zone 
309   
310position.x = 0; 
311   
312} 
313   
314else if (normalize) { 
315   
316// Rescale the output after taking the dead zone into account 
317   
318position.x = Mathf.Sign( position.x ) * ( absoluteX - deadZone.x ) / ( 1 - deadZone.x ); 
319   
320} 
321if (absoluteY < deadZone.y) { 
322   
323// Report the joystick as being at the center if it is within the dead zone 
324   
325position.y = 0; 
326   
327} 
328   
329else if (normalize) { 
330   
331// Rescale the output after taking the dead zone into account 
332   
333position.y = Mathf.Sign( position.y ) * ( absoluteY - deadZone.y ) / ( 1 - deadZone.y ); 
334   
335} 
336} 
337}

导出 build and run  看看在iPhone 上的效果，通过触摸游戏摇杆可以控制人物的上，下，左，右 ，左上，右上，左下，右下 8个方向的移动啦，不错吧，哇咔咔～～


文章标题：Unity3D游戏引擎之FBX模型载入与人物行走动画播放
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