游戏开发学习笔记-6.输入控制

小生怕怕啊

继上一篇加入摄像机后，接下来加入输入控制功能，控制摄像机的自由移动。

1. #include "Input.h"
   
2. 
   
3. 
   
4. bool CInput::Init(HWND hwnd)
   
5. {
   
6. //窗口句柄
   
7. m_Hwnd=hwnd;
   
8. //创建dxinput接口对象
   
9. if (FAILED(DirectInput8Create(GetModuleHandle(NULL),DIRECTINPUT_VERSION,IID_IDirectInput8,(void**)&m_Input,NULL)))
   
10. {
    
11. return false;
    
12. }
    
13. //创建键盘对象
    
14. if (FAILED(m_Input->CreateDevice(GUID_SysKeyboard,&m_KeyBoard,NULL)))
    
15. {
    
16. return false;
    
17. }
    
18. if (m_KeyBoard==NULL)
    
19. {
    
20. return false;
    
21. }
    
22. if (FAILED(m_KeyBoard->SetDataFormat(&c_dfDIKeyboard)))
    
23. {
    
24. return false;
    
25. }
    
26. //设置数据格式
    
27. m_KeyBoard->SetCooperativeLevel(m_Hwnd,DISCL_FOREGROUND|DISCL_NONEXCLUSIVE); //设置协作级别
    
28. 
    
29. //创建鼠标对象
    
30. if (FAILED(m_Input->CreateDevice(GUID_SysMouse,&m_Mouse,NULL)))
    
31. {
    
32. return false;
    
33. }
    
34. m_Mouse->SetDataFormat(&c_dfDIMouse); //设置鼠标接受数据格式
    
35. m_Mouse->SetCooperativeLevel(m_Hwnd,DISCL_FOREGROUND|DISCL_NONEXCLUSIVE); //设置非独占模式
    
36. 
    
37. 
    
38. return true;
    
39. }
    
40. 
    
41. void CInput::Update()
    
42. {
    
43. m_KeyBoard->Acquire();
    
44. m_KeyBoard->Poll();
    
45. m_Mouse->Acquire();
    
46. m_Mouse->Poll();
    
47. m_KeyBoard->GetDeviceState(sizeof(keys),(LPVOID)&keys);
    
48. m_Mouse->GetDeviceState(sizeof(m_MouseState),(LPVOID)&m_MouseState);
    
49. }
    
50. 
    
51. bool CInput::IsKeyDown( char key )
    
52. {
    
53. if (keys[key] & 0x80)
    
54. {
    
55. return true;
    
56. }
    
57. return false;
    
58. }
    
59. 
    
60. CInput::CInput()
    
61. {
    
62. m_Hwnd=NULL;
    
63. m_Input=NULL;
    
64. m_KeyBoard=NULL;
    
65. m_Mouse=NULL;
    
66. }
    
67. 
    
68. CInput::~CInput()
    
69. {
    
70. 
    
71. }
    
72. 
    
73. void CInput::GetMouseMoveState( long* plX,long* plY )
    
74. {
    
75. *plX=m_MouseState.lX;
    
76. *plY=m_MouseState.lY;
    
77. }

复制代码

1. #include "Engine.h"
   
2. 
   
3. #define WIN_CLASS "dx01"//窗体类名
   
4. #define WIN_NAME "3D摄像机自动导航" //窗体标题
   
5. #define WIN_WIDTH 800 //窗体宽度
   
6. #define WIN_HEIGHT 600 //窗体高度
   
7. #define WIN_FULLSCREEN false //是否全屏
   
8. 
   
9. 
   
10. Engine engine; //引擎对象
    
11. Model pModel; //模型
    
12. LPDIRECT3DDEVICE9 dev=NULL;
    
13. CCamera* g_pCamera=NULL; //摄像机
    
14. CInput* g_pInput=NULL; //输入设备
    
15. 
    
16. float angle=0.0f;
    
17. UINT uStep=1;
    
18. float RotationSpeed=0.005f;
    
19. float ForwardSpeed=1.0f;
    
20. 
    
21. //游戏初始化
    
22. bool GameInit(HWND hwnd);
    
23. //游戏循环
    
24. void GameLoop(HWND hwnd);
    
25. //更新
    
26. void GameUpdate(HWND hwnd);
    
27. //游戏结束
    
28. void GameEnd();
    
29. 
    
30. 
    
31. //Windows消息回调函数
    
32. LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wparam,LPARAM lparam)
    
33. {
    
34. switch(msg)
    
35. {
    
36. case WM_DESTROY:
    
37. PostQuitMessage(0);
    
38. break;
    
39. case WM_KEYUP:
    
40. if (wparam==VK_ESCAPE)
    
41. {
    
42. PostQuitMessage(0);
    
43. }
    
44. break;
    
45. }
    
46. return DefWindowProc(hwnd,msg,wparam,lparam);
    
47. }
    
48. 
    
49. //Window入口函数
    
50. int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd )
    
51. {
    
52. //设置窗口结构类属性
    
53. WNDCLASSEX wc={sizeof(WNDCLASSEX),CS_CLASSDC,WndProc,0,0,hInstance,NULL,NULL,NULL,NULL,WIN_CLASS,NULL};
    
54. //注册窗口类型
    
55. RegisterClassEx(&wc);
    
56. //创建窗口
    
57. HWND hwnd= CreateWindow(WIN_CLASS,WIN_NAME,WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,WIN_WIDTH,WIN_HEIGHT,NULL,NULL,hInstance,NULL);
    
58. if (hwnd)
    
59. {
    
60. ShowWindow(hwnd,nShowCmd); //显示窗口
    
61. UpdateWindow(hwnd); //更新窗口
    
62. 
    
63. if (GameInit(hwnd))
    
64. {
    
65. MSG msg;
    
66. ZeroMemory(&msg,sizeof(msg));
    
67. //窗口消息循环
    
68. while (msg.message!=WM_QUIT)
    
69. {
    
70. if (PeekMessage(&msg,NULL,0U,0U,PM_REMOVE))
    
71. {
    
72. TranslateMessage(&msg); //转换消息
    
73. DispatchMessage(&msg); //分派消息
    
74. }
    
75. else
    
76. {
    
77. GameLoop(hwnd);
    
78. }
    
79. }
    
80. GameEnd();
    
81. }
    
82. }
    
83. UnregisterClass(WIN_CLASS,wc.hInstance);
    
84. return 0;
    
85. }
    
86. //Game循环
    
87. void GameLoop(HWND hwnd)
    
88. {
    
89. engine.ClearScreen();
    
90. GameUpdate(hwnd);
    
91. engine.StartRender(); //开始渲染
    
92. 
    
93. engine.DrawModel(&pModel);
    
94. 
    
95. engine.EndRender(); //结束渲染
    
96. }
    
97. 
    
98. //Game开始
    
99. bool GameInit(HWND hwnd)
    
100. {
     
101. if (!engine.Init(hwnd,WIN_WIDTH,WIN_HEIGHT))
     
102. {
     
103. return false;
     
104. }
     
105. if (!engine.LoadModel("edificio1.X",&pModel))
     
106. {
     
107. ShowMessage("载入模型失败！");
     
108. return false;
     
109. }
     
110. dev= engine.GetDev();
     
111. 
     
112. dev->SetRenderState(D3DRS_LIGHTING,false); //关闭光照
     
113. dev->SetRenderState(D3DRS_CULLMODE,D3DCULL_NONE); //背面消隐
     
114. 
     
115. g_pCamera=new CCamera(dev);
     
116. g_pCamera->SetCameraPosition(&D3DXVECTOR3(0.0f,50.0f,-300.0f)); //设置初始摄像机位置
     
117. g_pCamera->SetLookPosition(&D3DXVECTOR3(0.0f,50.0f,0.0f)); //设置初始观察点位置
     
118. g_pCamera->SetViewMatrix(); //初始化取景变换矩阵
     
119. g_pCamera->SetProjMatrix(WIN_WIDTH,WIN_HEIGHT); //初始化投影变换矩阵
     
120. 
     
121. g_pInput=new CInput();
     
122. if (!g_pInput->Init(hwnd))
     
123. {
     
124. return false;
     
125. }
     
126. 
     
127. 
     
128. 
     
129. return true;
     
130. }
     
131. 
     
132. //GameOver
     
133. void GameEnd()
     
134. {
     
135. //模型释放
     
136. pModel.Release();
     
137. //关闭引擎
     
138. engine.Shutdown();
     
139. g_pCamera->~CCamera();
     
140. SAFE_DELETE(g_pCamera);
     
141. }
     
142. 
     
143. void GameUpdate(HWND hwnd)
     
144. {
     
145. g_pInput->Update(); //更新键盘鼠标缓冲区数据
     
146. if (g_pInput->IsKeyDown(DIK_W)) g_pCamera->MoveAlongLook(ForwardSpeed); //向前
     
147. if(g_pInput->IsKeyDown(DIK_S)) g_pCamera->MoveAlongLook(-ForwardSpeed); //向后
     
148. if(g_pInput->IsKeyDown(DIK_A)) g_pCamera->MoveAlongRight(-ForwardSpeed); //向左
     
149. if(g_pInput->IsKeyDown(DIK_D)) g_pCamera->MoveAlongRight(ForwardSpeed); //向右
     
150. long x,y;
     
151. g_pInput->GetMouseMoveState(&x,&y); //获取鼠标数据
     
152. g_pCamera->RotationUp(x*0.001f); //左右旋转
     
153. g_pCamera->RotationRight(y*0.001f); //上下旋转
     
154. D3DXMATRIX MatrixView;
     
155. g_pCamera->CalcViewMatrix(&MatrixView);
     
156. dev->SetTransform(D3DTS_VIEW,&MatrixView);
     
157. 
     
158. //控制鼠标坐标
     
159. POINT pos1;
     
160. pos1.x=WIN_WIDTH/2;
     
161. pos1.y=WIN_HEIGHT/2;
     
162. SetCursorPos(pos1.x,pos1.y);
     
163. 
     
164. }

复制代码

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