Direct3D学习笔记(二)——精灵动画(Sprite)

使用精灵表

精灵表，就是一个包含了多个图片单元的平铺的图像。

我们需要做的就是，算出图片单元的左上角在位图图像中为止，然后从图像中按照精灵的宽度和高度复制出一个源矩形来。

使用这个技术绘制单个帧，我们可以编写一个能绘制精灵表中任何一帧的函数！为了让这个函数尽可能可重用，必须将能描述精灵的所有属性传递进来。

一、MyDirectX.h

#pragma once  

//header files  
#define WIN32_EXTRA_LEAN  
#define DIRECTINPUT_VERSION 0x0800  
#include   
#include   
#include   
#include   
#include   
#include   
#include   
#include   
#include 
using namespace std;

//libraries  
#pragma comment(lib,"winmm.lib")  
#pragma comment(lib,"user32.lib")  
#pragma comment(lib,"gdi32.lib")  
#pragma comment(lib,"dxguid.lib")  
#pragma comment(lib,"d3d9.lib")  
#pragma comment(lib,"d3dx9.lib")  
#pragma comment(lib,"dinput8.lib")  
#pragma comment(lib,"xinput.lib")  

//program values  
extern const string APPTITLE;
extern const int SCREENW;
extern const int SCREENH;
extern bool gameover;

//Direct3D objects  
extern LPDIRECT3D9 d3d;
extern LPDIRECT3DDEVICE9 d3ddev;
extern LPDIRECT3DSURFACE9 backbuffer;
extern LPD3DXSPRITE spriteobj; //纹理
extern LPD3DXFONT font; //文字
extern LPDIRECTINPUT8 dinput;
extern LPDIRECTINPUTDEVICE8 dimouse;
extern LPDIRECTINPUTDEVICE8 dikeyboard;
//extern ID3DXFont* g_pFont = NULL;
extern DIMOUSESTATE mouse_state;
extern XINPUT_GAMEPAD controllers[4];

//Direct3D functions  
bool Direct3D_Init(HWND hwnd, int width, int height, bool fullscreen);
void Direct3D_Shutdown();
LPDIRECT3DSURFACE9 LoadSurface(string filename);
LPD3DXFONT MakeFont(string name, int size); //设置字体
void DrawSurface(LPDIRECT3DSURFACE9 dest, float x, float y, LPDIRECT3DSURFACE9 source);

//DirectInput objects, devices, and states  
//DirectInput functions  
bool DirectInput_Init(HWND);
void DirectInput_Update();
void DirectInput_Shutdown();
int Key_Down(int);
int Mouse_Button(int);
int Mouse_X();
int Mouse_Y();
void XInput_Vibrate(int contNum = 0, int amount = 65535);
bool XInput_Controller_Found();

//game functions  
bool Game_Init(HWND window);
void Game_Run(HWND window);

void MouseUpdate();
void KeyBoardUpdate();
void XInputUpdate();
void Game_End();

LPDIRECT3DTEXTURE9 LoadTexture(string filename, D3DCOLOR transcolor = D3DCOLOR_XRGB(0, 0, 0));
D3DXVECTOR2  GetBitmapSize(string filename);
void FontPrint(LPD3DXFONT font, int x, int y, string text, D3DCOLOR color = D3DCOLOR_XRGB(255, 255, 255));

void Sprite_Draw_Fram(LPDIRECT3DTEXTURE9 texture, int destx, int desty, int framenum, int framew, int frameh, int columns);
void Sprite_Animate(int &frame, int startframe, int endframe, int direction, int &starttime, int delay);

二、MyDirectX.cpp

#include "MyDirectX.h"  
#include   
using namespace std;

//Direct3D variables  
LPDIRECT3D9 d3d = NULL;
LPDIRECT3DDEVICE9 d3ddev = NULL;
LPDIRECT3DSURFACE9 backbuffer = NULL;

//DirectInput variables  
LPDIRECTINPUT8 dinput = NULL;
LPDIRECTINPUTDEVICE8 dimouse = NULL;
LPDIRECTINPUTDEVICE8 dikeyboard = NULL;
DIMOUSESTATE mouse_state;
char keys[256];
XINPUT_GAMEPAD controllers[4];

/**
** Direct3D initialization
**/
bool Direct3D_Init(HWND window, int width, int height, bool fullscreen)
{
	//initialize Direct3D  
	d3d = Direct3DCreate9(D3D_SDK_VERSION);
	if (!d3d) return false;

	//set Direct3D presentation parameters  
	D3DPRESENT_PARAMETERS d3dpp;
	ZeroMemory(&d3dpp, sizeof(d3dpp));
	d3dpp.Windowed = (!fullscreen);
	d3dpp.SwapEffect = D3DSWAPEFFECT_COPY;
	d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
	d3dpp.BackBufferCount = 1;
	d3dpp.BackBufferWidth = width;
	d3dpp.BackBufferHeight = height;
	d3dpp.hDeviceWindow = window;

	//create Direct3D device  
	d3d->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, window,
		D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &d3ddev);

	if (!d3ddev) return false;

	//get a pointer to the back buffer surface  
	d3ddev->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &backbuffer);
	D3DXCreateSprite(d3ddev, &spriteobj);  //纹理
	return true;
}

/**
** Direct3D shutdown
**/
void Direct3D_Shutdown()
{
	if (spriteobj)spriteobj->Release();
	if (d3ddev) d3ddev->Release();
	if (d3d) d3d->Release();
}

/**
** Draws a surface to the screen using StretchRect
**/
void DrawSurface(LPDIRECT3DSURFACE9 dest, float x, float y, LPDIRECT3DSURFACE9 source)
{
	//get width/height from source surface  
	D3DSURFACE_DESC desc;
	source->GetDesc(&desc);

	//create rects for drawing  
	RECT source_rect = { 0, 0, (long)desc.Width, (long)desc.Height };
	RECT dest_rect = { (long)x, (long)y, (long)x + desc.Width, (long)y + desc.Height };

	//draw the source surface onto the dest  
	d3ddev->StretchRect(source, &source_rect, dest, &dest_rect, D3DTEXF_NONE);

}

/**
** Loads a bitmap file into a surface
**/
LPDIRECT3DSURFACE9 LoadSurface(string filename)
{
	LPDIRECT3DSURFACE9 image = NULL;

	//get width and height from bitmap file  
	D3DXIMAGE_INFO info;
	HRESULT result = D3DXGetImageInfoFromFile(filename.c_str(), &info);
	if (result != D3D_OK)
		return NULL;

	//create surface  
	result = d3ddev->CreateOffscreenPlainSurface(
		info.Width,         //width of the surface  
		info.Height,        //height of the surface  
		D3DFMT_X8R8G8B8,    //surface format  
		D3DPOOL_DEFAULT,    //memory pool to use  
		&image,             //pointer to the surface  
		NULL);              //reserved (always NULL)  

	if (result != D3D_OK) return NULL;

	//load surface from file into newly created surface  
	result = D3DXLoadSurfaceFromFile(
		image,                  //destination surface  
		NULL,                   //destination palette  
		NULL,                   //destination rectangle  
		filename.c_str(),       //source filename  
		NULL,                   //source rectangle  
		D3DX_DEFAULT,           //controls how image is filtered  
		D3DCOLOR_XRGB(0, 0, 0),   //for transparency (0 for none)  
		NULL);                  //source image info (usually NULL)  

								//make sure file was loaded okay  


	if (result != D3D_OK) return NULL;

	return image;

}


LPDIRECT3DTEXTURE9 LoadTexture(string filename, D3DCOLOR transcolor) {
	LPDIRECT3DTEXTURE9 texture = NULL;
	D3DXIMAGE_INFO info;
	HRESULT result = D3DXGetImageInfoFromFile(filename.c_str(), &info);
	if (result != D3D_OK) return NULL;
	result = D3DXCreateTextureFromFileEx(d3ddev, filename.c_str(), info.Width, info.Height, 1, D3DPOOL_DEFAULT, D3DFMT_UNKNOWN, D3DPOOL_DEFAULT, D3DX_DEFAULT, D3DX_DEFAULT, transcolor, &info, NULL, &texture);

	if (result != D3D_OK) return NULL;
	return texture;
}
D3DXVECTOR2 GetBitmapSize(string filename) {
	D3DXIMAGE_INFO info;
	D3DXVECTOR2 size = D3DXVECTOR2(0.0f, 0.0f);
	HRESULT result = D3DXGetImageInfoFromFile(filename.c_str(), &info);
	if (result == D3D_OK) {
		size = D3DXVECTOR2((float)info.Width, (float)info.Height);
	}
	else {
		size = D3DXVECTOR2((float)info.Width, (float)info.Height);
	}
	return size;
}



/**
** DirectInput initialization
**/
bool DirectInput_Init(HWND hwnd) {
	//initialize DirectInput object  
	HRESULT result = DirectInput8Create(
		GetModuleHandle(NULL),
		DIRECTINPUT_VERSION,
		IID_IDirectInput8,
		(void**)&dinput,
		NULL);

	//initialize the keyboard  
	dinput->CreateDevice(GUID_SysKeyboard, &dikeyboard, NULL);                     //创建设备
	dikeyboard->SetDataFormat(&c_dfDIKeyboard);                                    //格式
	dikeyboard->SetCooperativeLevel(hwnd, DISCL_NONEXCLUSIVE | DISCL_FOREGROUND);  //协作级别
	dikeyboard->Acquire();

	//initialize the mouse  
	dinput->CreateDevice(GUID_SysMouse, &dimouse, NULL);
	dimouse->SetDataFormat(&c_dfDIMouse);
	dimouse->SetCooperativeLevel(hwnd, DISCL_NONEXCLUSIVE | DISCL_FOREGROUND);
	dimouse->Acquire();
	d3ddev->ShowCursor(false);

	return true;
}

/**
** DirectInput update
**/
void DirectInput_Update()
{
	//update mouse  
	dimouse->GetDeviceState(sizeof(mouse_state), (LPVOID)&mouse_state);

	//update keyboard  
	dikeyboard->GetDeviceState(sizeof(keys), (LPVOID)&keys);

	//update controllers  
	for (int i = 0; i< 4; i++)
	{
		ZeroMemory(&controllers[i], sizeof(XINPUT_GAMEPAD));

		//get the state of the controller  
		XINPUT_STATE state;
		DWORD result = XInputGetState(i, &state);

		//store state in global controllers array  
		if (result == 0) controllers[i] = state.Gamepad;
	}

}

/**
** Return mouse x movement
**/
int Mouse_X()
{
	return mouse_state.lX;
}

/**
** Return mouse y movement
**/
int Mouse_Y()
{
	return mouse_state.lY;
}

/**
** Return mouse button state
**/
int Mouse_Button(int button)
{
	return mouse_state.rgbButtons[button] & 0x80;
}

/**
** Return key press state
**/
int Key_Down(int key)
{
	return (keys[key] & 0x80);
}

/**
** DirectInput shutdown
**/
void DirectInput_Shutdown()
{
	if (dikeyboard)
	{
		dikeyboard->Unacquire();
		dikeyboard->Release();
		dikeyboard = NULL;
	}
	if (dimouse)
	{
		dimouse->Unacquire();
		dimouse->Release();
		dimouse = NULL;
	}
}

/**
** Returns true if controller is plugged in
**/
bool XInput_Controller_Found()
{
	XINPUT_CAPABILITIES caps;
	ZeroMemory(&caps, sizeof(XINPUT_CAPABILITIES));
	XInputGetCapabilities(0, XINPUT_FLAG_GAMEPAD, &caps);
	if (caps.Type != 0) return false;

	return true;
}

/**
** Vibrates the controller
**/
void XInput_Vibrate(int contNum, int amount)
{
	XINPUT_VIBRATION vibration;
	ZeroMemory(&vibration, sizeof(XINPUT_VIBRATION));
	vibration.wLeftMotorSpeed = amount;
	vibration.wRightMotorSpeed = amount;
	XInputSetState(contNum, &vibration);
}


void Sprite_Draw_Fram(LPDIRECT3DTEXTURE9 texture, int destx, int desty, int framenum, int framew, int frameh, int columns) {
	D3DXVECTOR3 position((float)destx, (float)desty, 0);
	D3DCOLOR white = D3DCOLOR_XRGB(255, 255, 255);
	RECT rect;
	rect.left = ((framenum % columns)) * framew;
	rect.top = ((framenum / columns)) * frameh;
	rect.right = rect.left + framew;
	rect.bottom = rect.top + frameh;
	spriteobj->Draw(texture, &rect, NULL, &position, white);
}
void Sprite_Animate(int &frame, int startframe, int endframe, int direction, int &starttime, int delay) {
	if ((int)GetTickCount() > starttime + delay) {
		starttime = GetTickCount();
		frame += direction;
		if (frame > endframe)frame = startframe;
		if (frame < startframe)frame = endframe;
	}
}

三、MyWindows.cpp

#include "MyDirectX.h"  
using namespace std;
bool gameover = false;

/**
** Windows event handler
**/
LRESULT WINAPI WinProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch (msg)
	{
	case WM_DESTROY:
		gameover = true;
		PostQuitMessage(0);
		return 0;
	}
	return DefWindowProc(hWnd, msg, wParam, lParam);
}

/**
** Windows entry point
**/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	//initialize window settings  
	WNDCLASSEX wc;
	wc.cbSize = sizeof(WNDCLASSEX);
	wc.style = CS_HREDRAW | CS_VREDRAW;
	wc.lpfnWndProc = (WNDPROC)WinProc;
	wc.cbClsExtra = 0;
	wc.cbWndExtra = 0;
	wc.hInstance = hInstance;
	wc.hIcon = NULL;
	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wc.lpszMenuName = NULL;
	wc.lpszClassName = APPTITLE.c_str();
	wc.hIconSm = NULL;
	RegisterClassEx(&wc);

	//create a new window  
	HWND window = CreateWindow(APPTITLE.c_str(), APPTITLE.c_str(),
		WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
		SCREENW, SCREENH, NULL, NULL, hInstance, NULL);
	if (window == 0) return 0;

	//display the window  
	ShowWindow(window, nCmdShow);
	UpdateWindow(window);

	//initialize the game  
	if (!Game_Init(window)) return 0;

	// main message loop  
	MSG message;
	while (!gameover)
	{
		if (PeekMessage(&message, NULL, 0, 0, PM_REMOVE))
		{
			TranslateMessage(&message);
			DispatchMessage(&message);
		}

		//process game loop   
		Game_Run(window);
	}

	//shutdown  
	Game_End();
	return message.wParam;
}

四、MyGame.cpp

#include "MyDirectX.h"
using namespace std;
const string APPTITLE = "Animate Sprite Demo";
const int SCREENW = 800;
const int SCREENH = 600;
LPDIRECT3DTEXTURE9 explosion = NULL;
LPD3DXSPRITE spriteobj = NULL; //定义为null 
int frame = 0;
int starttime = 0;


bool Game_Init(HWND window) {
	if (!Direct3D_Init(window, SCREENW, SCREENH, false)) {
		MessageBox(0, "Error initializing Driect3D", "ERROR", 0);
		return false;
	}
	if (!DirectInput_Init(window)) {
		MessageBox(0, "Error initializing DriectInput", "ERROR", 0);
	}
	explosion = LoadTexture("F:/5.png");
	if (!explosion)return false;
}


void Game_Run(HWND window) {
	if (!d3ddev)return;
	DirectInput_Update();
	d3ddev->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0, 0, 100), 1.0f, 0);
	if (d3ddev->BeginScene()) {
		spriteobj->Begin(D3DXSPRITE_ALPHABLEND);


		Sprite_Animate(frame, 0, 29, 1, starttime, 30);
		Sprite_Draw_Fram(explosion, 20, 200, frame, 42, 42, 4);
		spriteobj->End();
		d3ddev->EndScene();
		d3ddev->Present(NULL, NULL, NULL, NULL);
	}
	if (Key_Down(VK_ESCAPE))gameover = true;
	if (controllers[0].wButtons & XINPUT_GAMEPAD_BACK) {
		gameover = true;
	}


}
void Game_End() {
	explosion->Release();
	DirectInput_Shutdown();
	Direct3D_Shutdown();
}