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#include "MyDirectX.h"
using namespace std;
const string APPTITLE = "Transparent Sprite Demo";
const int SCREENW = 1024;
const int SCREENH = 768;
LPDIRECT3DTEXTURE9 image_colorkey = NULL;
LPDIRECT3DTEXTURE9 image_alpha = NULL;
LPDIRECT3DTEXTURE9 image_notrans = NULL;
/**
**Game initialization
**/
bool Game_Init(HWND window)
{
//initialize Direct3D
if(Direct3D_Init(window, SCREENW, SCREENH, false))
{
MessageBox(0, "Error initializing Direct3D", "ERROR", 0);
return false;
}
//initialize DirectInput
if(!DirectInput_Init(window))
{
MessageBox(0, "Error initializing DirectInput", "ERROR", 0);
return false;
}
//load non-transparent image
image_notrans = LoadTexture("shuttle_notrans.bmp");
if(!image_notrans) return false;
//load color-keyed transparent image
image_colorkey = LoadTexture("shuttle_colorkey.bmp", D3DCOLOR_XRGB(255, 0, 255));
if(!image_colorkey) return false;
//load alpha transparent image
image_alpha = LoadTexture("shuttle_alpha.tga");
if(!image_alpha) return false;
return true;
}
void Game_Run(HWND window)
{
//make sure the Direct3D device is valid
if(!d3ddev) return;
//update input devices
DirectInput_Update();
//clear the scene
d3ddev->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0, 0, 100), 1.0f, 0);
//start rendering
if(d3ddev->BeginScene())
{
//start drawing
spriteobj->Begin(D3DXSPRITE_ALPHABLEND);
//draw the sprite
D3DXVECTOR3 pos1(10, 10, 0);
spriteobj->Draw(image_notrans, NULL, NULL, &pos1,
D3DCOLOR_XRGB(255, 255, 255));
D3DXVECTOR3 pos2(350, 10, 0);
spriteobj->Draw(image_colorkey, NULL, NULL, &pos2,
D3DCOLOR_XRGB(255, 255, 255));
D3DXVECTOR3 pos3(700, 10, 0);
spriteobj->Draw(image_alpha, NULL, NULL, &pos3,
D3DCOLOR_XRGB(255, 255, 255));
//stop drawing
spriteobj->End();
//stop rendering
d3ddev->EndScene();
d3ddev->Present(NULL, NULL, NULL, NULL);
}
//Escape key ends program
if(KEY_DOWN(VK_ESCAPE))
gameover = true;
//controller Back button also ends
if(controllers[0].wButtons & XINPUT_GAMEPAD_BACK)
gameover = true;
}
/**
**Game shutdown
**/
void Game_End()
{
//free memory and shut down
image_notrans->Release();
image_colorkey->Release();
image_alpha->Release();
DirectInput_Shutdown();
Direct3D_Shutdown();
}
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