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video.c
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video.c
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/* -*- mode: c; tab-width: 4; c-basic-offset: 3; c-file-style: "linux" -*- */
//
// Copyright (c) 2009, Wei Mingzhi <[email protected]>.
// All rights reserved.
//
// This file is part of SDLPAL.
//
// SDLPAL is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#include "main.h"
// Screen buffer
SDL_Surface *gpScreen = NULL;
// Backup screen buffer
SDL_Surface *gpScreenBak = NULL;
#if SDL_VERSION_ATLEAST(2,0,0)
SDL_Window *gpWindow = NULL;
static SDL_Renderer *gpRenderer = NULL;
static SDL_Texture *gpTexture = NULL;
static SDL_Texture *gpTouchOverlay = NULL;
#ifdef __WINPHONE__
static SDL_Texture *gpBackKeyMessage = NULL;
#endif
#endif
// The real screen surface
static SDL_Surface *gpScreenReal = NULL;
volatile BOOL g_bRenderPaused = FALSE;
#if (defined (__SYMBIAN32__) && !defined (__S60_5X__)) || defined (PSP) || defined (GEKKO) || defined(__N3DS__)
static BOOL bScaleScreen = FALSE;
#else
static BOOL bScaleScreen = TRUE;
#endif
// Initial screen size
static WORD g_wInitialWidth = 640;
static WORD g_wInitialHeight = 400;
// Shake times and level
static WORD g_wShakeTime = 0;
static WORD g_wShakeLevel = 0;
#if SDL_VERSION_ATLEAST(2, 0, 0)
#define SDL_SoftStretch SDL_UpperBlit
#endif
INT
#ifdef GEKKO // Rikku2000: Crash on compile, allready define on WIISDK
VIDEO_Init_GEKKO(
#else
VIDEO_Init(
#endif
WORD wScreenWidth,
WORD wScreenHeight,
BOOL fFullScreen
)
/*++
Purpose:
Initialze the video subsystem.
Parameters:
[IN] wScreenWidth - width of the screen.
[IN] wScreenHeight - height of the screen.
[IN] fFullScreen - TRUE to use full screen mode, FALSE to use windowed mode.
Return value:
0 = success, -1 = fail to create the screen surface,
-2 = fail to create screen buffer.
--*/
{
#if SDL_VERSION_ATLEAST(2,0,0)
SDL_Surface *overlay;
#endif
g_wInitialWidth = wScreenWidth;
g_wInitialHeight = wScreenHeight;
#if SDL_VERSION_ATLEAST(2,0,0)
//
// Before we can render anything, we need a window and a renderer.
//
#if defined (__IOS__) || defined (__ANDROID__) || defined (__WINPHONE__)
gpWindow = SDL_CreateWindow("Pal",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, wScreenWidth, wScreenHeight,
SDL_WINDOW_SHOWN);
#else
gpWindow = SDL_CreateWindow("Pal",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, wScreenWidth, wScreenHeight,
SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE);
#endif
if (gpWindow == NULL)
{
return -1;
}
gpRenderer = SDL_CreateRenderer(gpWindow, -1, SDL_RENDERER_ACCELERATED);
if (gpRenderer == NULL)
{
return -1;
}
#if defined (__IOS__)
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 0);
SDL_GL_SetAttribute(SDL_GL_RETAINED_BACKING, 1);
#endif
//
// Create the screen buffer and the backup screen buffer.
//
gpScreen = SDL_CreateRGBSurface(SDL_SWSURFACE, 320, 200, 8, 0, 0, 0, 0);
gpScreenBak = SDL_CreateRGBSurface(SDL_SWSURFACE, 320, 200, 8, 0, 0, 0, 0);
gpScreenReal = SDL_CreateRGBSurface(SDL_SWSURFACE, 320, 200, 32,
0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000);
//
// Create texture for screen.
//
gpTexture = SDL_CreateTexture(gpRenderer, SDL_PIXELFORMAT_ARGB8888,
SDL_TEXTUREACCESS_STREAMING, 320, 200);
//
// Failed?
//
if (gpScreen == NULL || gpScreenBak == NULL || gpScreenReal == NULL || gpTexture == NULL)
{
if (gpScreen != NULL)
{
SDL_FreeSurface(gpScreen);
gpScreen = NULL;
}
if (gpScreenBak != NULL)
{
SDL_FreeSurface(gpScreenBak);
gpScreenBak = NULL;
}
if (gpScreenReal != NULL)
{
SDL_FreeSurface(gpScreenReal);
gpScreenReal = NULL;
}
if (gpTexture != NULL)
{
SDL_DestroyTexture(gpTexture);
gpTexture = NULL;
}
SDL_DestroyRenderer(gpRenderer);
gpRenderer = NULL;
SDL_DestroyWindow(gpWindow);
gpWindow = NULL;
return -2;
}
//
// Create texture for overlay.
//
overlay = SDL_LoadBMP(va("%s%s", PAL_PREFIX, "overlay.bmp"));
if (overlay != NULL)
{
SDL_SetColorKey(overlay, SDL_RLEACCEL, SDL_MapRGB(overlay->format, 255, 0, 255));
gpTouchOverlay = SDL_CreateTextureFromSurface(gpRenderer, overlay);
SDL_SetTextureAlphaMod(gpTouchOverlay, 120);
SDL_FreeSurface(overlay);
}
#ifdef __WINPHONE__
{
//
// Totally ugly hack to satisfy M$'s silly requirements.
// No need to understand this crap.
//
#ifdef PAL_WIN95
extern BOOL fIsBig5;
#endif
SDL_Color palette[256] = { 0 };
SDL_Surface *p;
#ifdef PAL_WIN95
fIsBig5 = TRUE;
#endif
palette[0].r = palette[0].g = palette[0].b = palette[0].a = 0;
palette[1].r = palette[1].g = palette[1].b = palette[1].a = 255;
SDL_FillRect(gpScreenBak, NULL, 0);
VIDEO_SetPalette(palette);
p = gpScreen;
gpScreen = gpScreenBak;
PAL_DrawText("\xA6\x41\xA6\xB8\xAB\xF6 Back \xB5\xB2\xA7\xF4", PAL_XY(30, 30), 1, FALSE, FALSE);
gpScreen = p;
gpBackKeyMessage = SDL_CreateTextureFromSurface(gpRenderer, gpScreenBak);
SDL_FillRect(gpScreenBak, NULL, 0);
#ifdef PAL_WIN95
fIsBig5 = FALSE;
#endif
}
#endif
#else
//
// Create the screen surface.
//
#if defined (NDS)
gpScreenReal = SDL_SetVideoMode(293, 196, 8, SDL_SWSURFACE | SDL_FULLSCREEN);
#elif defined (__SYMBIAN32__)
#ifdef __S60_5X__
gpScreenReal = SDL_SetVideoMode(640, 360, 8,
SDL_SWSURFACE | (fFullScreen ? SDL_FULLSCREEN : 0));
#else
gpScreenReal = SDL_SetVideoMode(320, 240, 8,
SDL_SWSURFACE | (fFullScreen ? SDL_FULLSCREEN : 0));
#endif
#elif defined (GEKKO)
gpScreenReal = SDL_SetVideoMode(640, 480, 8,
SDL_SWSURFACE | (fFullScreen ? SDL_FULLSCREEN : 0));
#elif defined (PSP)
gpScreenReal = SDL_SetVideoMode(320, 240, 8, SDL_SWSURFACE | SDL_FULLSCREEN);
#elif defined (__N3DS__)
gpScreenReal = SDL_SetVideoMode(320, 240, 8, SDL_SWSURFACE | SDL_TOPSCR |
SDL_CONSOLEBOTTOM);
#else
gpScreenReal = SDL_SetVideoMode(wScreenWidth, wScreenHeight, 8,
SDL_HWSURFACE | SDL_RESIZABLE | (fFullScreen ? SDL_FULLSCREEN : 0));
#endif
if (gpScreenReal == NULL)
{
//
// Fall back to 640x480 software mode.
//
gpScreenReal = SDL_SetVideoMode(640, 480, 8,
SDL_SWSURFACE | (fFullScreen ? SDL_FULLSCREEN : 0));
}
//
// Still fail?
//
if (gpScreenReal == NULL)
{
return -1;
}
//
// Create the screen buffer and the backup screen buffer.
//
gpScreen = SDL_CreateRGBSurface(gpScreenReal->flags & ~SDL_HWSURFACE, 320, 200, 8,
gpScreenReal->format->Rmask, gpScreenReal->format->Gmask,
gpScreenReal->format->Bmask, gpScreenReal->format->Amask);
gpScreenBak = SDL_CreateRGBSurface(gpScreenReal->flags & ~SDL_HWSURFACE, 320, 200, 8,
gpScreenReal->format->Rmask, gpScreenReal->format->Gmask,
gpScreenReal->format->Bmask, gpScreenReal->format->Amask);
//
// Failed?
//
if (gpScreen == NULL || gpScreenBak == NULL)
{
if (gpScreen != NULL)
{
SDL_FreeSurface(gpScreen);
gpScreen = NULL;
}
if (gpScreenBak != NULL)
{
SDL_FreeSurface(gpScreenBak);
gpScreenBak = NULL;
}
SDL_FreeSurface(gpScreenReal);
gpScreenReal = NULL;
return -2;
}
#endif
if (fFullScreen)
{
SDL_ShowCursor(FALSE);
}
return 0;
}
VOID
VIDEO_Shutdown(
VOID
)
/*++
Purpose:
Shutdown the video subsystem.
Parameters:
None.
Return value:
None.
--*/
{
if (gpScreen != NULL)
{
SDL_FreeSurface(gpScreen);
}
gpScreen = NULL;
if (gpScreenBak != NULL)
{
SDL_FreeSurface(gpScreenBak);
}
gpScreenBak = NULL;
#if SDL_VERSION_ATLEAST(2,0,0)
if (gpTouchOverlay)
{
SDL_DestroyTexture(gpTouchOverlay);
}
gpTouchOverlay = NULL;
#ifdef __WINPHONE__
if (gpBackKeyMessage)
{
SDL_DestroyTexture(gpBackKeyMessage);
}
gpBackKeyMessage = NULL;
#endif
if (gpTexture)
{
SDL_DestroyTexture(gpTexture);
}
gpTexture = NULL;
if (gpRenderer)
{
SDL_DestroyRenderer(gpRenderer);
}
gpRenderer = NULL;
if (gpWindow)
{
SDL_DestroyWindow(gpWindow);
}
gpWindow = NULL;
#endif
if (gpScreenReal != NULL)
{
SDL_FreeSurface(gpScreenReal);
}
gpScreenReal = NULL;
}
VOID
VIDEO_UpdateScreen(
const SDL_Rect *lpRect
)
/*++
Purpose:
Update the screen area specified by lpRect.
Parameters:
[IN] lpRect - Screen area to update.
Return value:
None.
--*/
{
SDL_Rect srcrect, dstrect;
short offset = 240 - 200;
short screenRealHeight = gpScreenReal->h;
short screenRealY = 0;
#if SDL_VERSION_ATLEAST(2,0,0)
if (g_bRenderPaused)
{
return;
}
#endif
//
// Lock surface if needed
//
if (SDL_MUSTLOCK(gpScreenReal))
{
if (SDL_LockSurface(gpScreenReal) < 0)
return;
}
if (!bScaleScreen)
{
screenRealHeight -= offset;
screenRealY = offset / 2;
}
if (lpRect != NULL)
{
dstrect.x = (SHORT)((INT)(lpRect->x) * gpScreenReal->w / gpScreen->w);
dstrect.y = (SHORT)((INT)(screenRealY + lpRect->y) * screenRealHeight / gpScreen->h);
dstrect.w = (WORD)((DWORD)(lpRect->w) * gpScreenReal->w / gpScreen->w);
dstrect.h = (WORD)((DWORD)(lpRect->h) * screenRealHeight / gpScreen->h);
SDL_SoftStretch(gpScreen, (SDL_Rect *)lpRect, gpScreenReal, &dstrect);
if (SDL_MUSTLOCK(gpScreenReal))
{
SDL_UnlockSurface(gpScreenReal);
}
#if SDL_VERSION_ATLEAST(2,0,0)
SDL_UpdateTexture(gpTexture, NULL, gpScreenReal->pixels, gpScreenReal->pitch);
SDL_RenderCopy(gpRenderer, gpTexture, NULL, NULL);
if (gpTouchOverlay)
{
SDL_RenderCopy(gpRenderer, gpTouchOverlay, NULL, NULL);
}
#ifdef __WINPHONE__
if (gpBackKeyMessage)
{
extern unsigned int g_uiLastBackKeyTime;
if (g_uiLastBackKeyTime != 0 && SDL_GetTicks() - g_uiLastBackKeyTime < 800)
{
SDL_RenderCopy(gpRenderer, gpBackKeyMessage, NULL, NULL);
}
}
#endif
SDL_RenderPresent(gpRenderer);
#else
SDL_UpdateRect(gpScreenReal, dstrect.x, dstrect.y, dstrect.w, dstrect.h);
#endif
}
else if (g_wShakeTime != 0)
{
//
// Shake the screen
//
srcrect.x = 0;
srcrect.y = 0;
srcrect.w = 320;
srcrect.h = 200 - g_wShakeLevel;
dstrect.x = 0;
dstrect.y = screenRealY;
dstrect.w = 320 * gpScreenReal->w / gpScreen->w;
dstrect.h = (200 - g_wShakeLevel) * screenRealHeight / gpScreen->h;
if (g_wShakeTime & 1)
{
srcrect.y = g_wShakeLevel;
}
else
{
dstrect.y = (screenRealY + g_wShakeLevel) * screenRealHeight / gpScreen->h;
}
SDL_SoftStretch(gpScreen, &srcrect, gpScreenReal, &dstrect);
if (g_wShakeTime & 1)
{
dstrect.y = (screenRealY + screenRealHeight - g_wShakeLevel) * screenRealHeight / gpScreen->h;
}
else
{
dstrect.y = screenRealY;
}
dstrect.h = g_wShakeLevel * screenRealHeight / gpScreen->h;
SDL_FillRect(gpScreenReal, &dstrect, 0);
if (SDL_MUSTLOCK(gpScreenReal))
{
SDL_UnlockSurface(gpScreenReal);
}
#if SDL_VERSION_ATLEAST(2, 0, 0)
SDL_UpdateTexture(gpTexture, NULL, gpScreenReal->pixels, gpScreenReal->pitch);
SDL_RenderCopy(gpRenderer, gpTexture, NULL, NULL);
if (gpTouchOverlay)
{
SDL_RenderCopy(gpRenderer, gpTouchOverlay, NULL, NULL);
}
#ifdef __WINPHONE__
if (gpBackKeyMessage)
{
extern unsigned int g_uiLastBackKeyTime;
if (g_uiLastBackKeyTime != 0 && SDL_GetTicks() - g_uiLastBackKeyTime < 800)
{
SDL_RenderCopy(gpRenderer, gpBackKeyMessage, NULL, NULL);
}
}
#endif
SDL_RenderPresent(gpRenderer);
#else
SDL_UpdateRect(gpScreenReal, 0, 0, gpScreenReal->w, gpScreenReal->h);
#endif
g_wShakeTime--;
}
else
{
dstrect.x = 0;
dstrect.y = screenRealY;
dstrect.w = gpScreenReal->w;
dstrect.h = screenRealHeight;
SDL_SoftStretch(gpScreen, NULL, gpScreenReal, &dstrect);
if (SDL_MUSTLOCK(gpScreenReal))
{
SDL_UnlockSurface(gpScreenReal);
}
#if SDL_VERSION_ATLEAST(2, 0, 0)
SDL_UpdateTexture(gpTexture, NULL, gpScreenReal->pixels, gpScreenReal->pitch);
SDL_RenderCopy(gpRenderer, gpTexture, NULL, NULL);
if (gpTouchOverlay)
{
SDL_RenderCopy(gpRenderer, gpTouchOverlay, NULL, NULL);
}
#ifdef __WINPHONE__
if (gpBackKeyMessage)
{
extern unsigned int g_uiLastBackKeyTime;
if (g_uiLastBackKeyTime != 0 && SDL_GetTicks() - g_uiLastBackKeyTime < 800)
{
SDL_RenderCopy(gpRenderer, gpBackKeyMessage, NULL, NULL);
}
}
#endif
SDL_RenderPresent(gpRenderer);
#else
SDL_UpdateRect(gpScreenReal, 0, 0, gpScreenReal->w, gpScreenReal->h);
#endif
}
}
VOID
VIDEO_SetPalette(
SDL_Color rgPalette[256]
)
/*++
Purpose:
Set the palette of the screen.
Parameters:
[IN] rgPalette - array of 256 colors.
Return value:
None.
--*/
{
#if SDL_VERSION_ATLEAST(2,0,0)
int i;
SDL_Palette *palette = SDL_AllocPalette(256);
if (palette == NULL)
{
return;
}
for (i = 0; i < 256; i++)
{
palette->colors[i] = rgPalette[i];
}
SDL_SetSurfacePalette(gpScreen, palette);
SDL_SetSurfacePalette(gpScreenBak, palette);
//
// HACKHACK: need to invalidate gpScreen->map otherwise the palette
// would not be effective during blit
//
SDL_SetSurfaceColorMod(gpScreen, 0, 0, 0);
SDL_SetSurfaceColorMod(gpScreen, 0xFF, 0xFF, 0xFF);
SDL_SetSurfaceColorMod(gpScreenBak, 0, 0, 0);
SDL_SetSurfaceColorMod(gpScreenBak, 0xFF, 0xFF, 0xFF);
VIDEO_UpdateScreen(NULL);
// The palette should be freed, or memory leak occurs.
SDL_FreePalette(palette);
#else
SDL_SetPalette(gpScreen, SDL_LOGPAL | SDL_PHYSPAL, rgPalette, 0, 256);
SDL_SetPalette(gpScreenBak, SDL_LOGPAL | SDL_PHYSPAL, rgPalette, 0, 256);
SDL_SetPalette(gpScreenReal, SDL_LOGPAL | SDL_PHYSPAL, rgPalette, 0, 256);
#if (defined (__SYMBIAN32__)) || (defined (__N3DS__))
{
static UINT32 time = 0;
if (SDL_GetTicks() - time > 50)
{
SDL_UpdateRect(gpScreenReal, 0, 0, gpScreenReal->w, gpScreenReal->h);
time = SDL_GetTicks();
}
}
#endif
#endif
}
VOID
VIDEO_Resize(
INT w,
INT h
)
/*++
Purpose:
This function is called when user resized the window.
Parameters:
[IN] w - width of the window after resizing.
[IN] h - height of the window after resizing.
Return value:
None.
--*/
{
#if SDL_VERSION_ATLEAST(2,0,0)
// TODO
#else
DWORD flags;
PAL_LARGE SDL_Color palette[256];
int i;
//
// Get the original palette.
//
for (i = 0; i < gpScreenReal->format->palette->ncolors; i++)
{
palette[i] = gpScreenReal->format->palette->colors[i];
}
//
// Create the screen surface.
//
flags = gpScreenReal->flags;
SDL_FreeSurface(gpScreenReal);
gpScreenReal = SDL_SetVideoMode(w, h, 8, flags);
if (gpScreenReal == NULL)
{
#ifdef __SYMBIAN32__
#ifdef __S60_5X__
gpScreenReal = SDL_SetVideoMode(640, 360, 8, SDL_SWSURFACE);
#else
gpScreenReal = SDL_SetVideoMode(320, 240, 8, SDL_SWSURFACE);
#endif
#else
//
// Fall back to 640x480 software windowed mode.
//
gpScreenReal = SDL_SetVideoMode(640, 480, 8, SDL_SWSURFACE);
#endif
}
SDL_SetPalette(gpScreenReal, SDL_PHYSPAL | SDL_LOGPAL, palette, 0, i);
VIDEO_UpdateScreen(NULL);
#endif
}
SDL_Color *
VIDEO_GetPalette(
VOID
)
/*++
Purpose:
Get the current palette of the screen.
Parameters:
None.
Return value:
Pointer to the current palette.
--*/
{
#if SDL_VERSION_ATLEAST(2,0,0)
return gpScreen->format->palette->colors;
#else
return gpScreenReal->format->palette->colors;
#endif
}
VOID
VIDEO_ToggleScaleScreen(
VOID
)
/*++
Purpose:
Toggle scalescreen mode.
Parameters:
None.
Return value:
None.
--*/
{
#ifdef __SYMBIAN32__
bScaleScreen = !bScaleScreen;
VIDEO_Resize(320, 240);
VIDEO_UpdateScreen(NULL);
#endif
}
VOID
VIDEO_ToggleFullscreen(
VOID
)
/*++
Purpose:
Toggle fullscreen mode.
Parameters:
None.
Return value:
None.
--*/
{
#if SDL_VERSION_ATLEAST(2,0,0)
// TODO
#else
DWORD flags;
PAL_LARGE SDL_Color palette[256];
int i;
//
// Get the original palette.
//
for (i = 0; i < gpScreenReal->format->palette->ncolors; i++)
{
palette[i] = gpScreenReal->format->palette->colors[i];
}
//
// Get the flags of the original screen surface
//
flags = gpScreenReal->flags;
if (flags & SDL_FULLSCREEN)
{
//
// Already in fullscreen mode. Remove the fullscreen flag.
//
flags &= ~SDL_FULLSCREEN;
flags |= SDL_RESIZABLE;
SDL_ShowCursor(TRUE);
}
else
{
//
// Not in fullscreen mode. Set the fullscreen flag.
//
flags |= SDL_FULLSCREEN;
SDL_ShowCursor(FALSE);
}
//
// Free the original screen surface
//
SDL_FreeSurface(gpScreenReal);
//
// ... and create a new one
//
if (g_wInitialWidth == 640 && g_wInitialHeight == 400 && (flags & SDL_FULLSCREEN))
{
gpScreenReal = SDL_SetVideoMode(640, 480, 8, flags);
}
else if (g_wInitialWidth == 640 && g_wInitialHeight == 480 && !(flags & SDL_FULLSCREEN))
{
gpScreenReal = SDL_SetVideoMode(640, 400, 8, flags);
}
else
{
gpScreenReal = SDL_SetVideoMode(g_wInitialWidth, g_wInitialHeight, 8, flags);
}
VIDEO_SetPalette(palette);
//
// Update the screen
//
VIDEO_UpdateScreen(NULL);
#endif
}
VOID
VIDEO_SaveScreenshot(
VOID
)
/*++
Purpose:
Save the screenshot of current screen to a BMP file.
Parameters:
None.
Return value:
None.
--*/
{
int iNumBMP = 0;
FILE *fp;
//
// Find a usable BMP filename.
//
for (iNumBMP = 0; iNumBMP <= 9999; iNumBMP++)
{
fp = fopen(va("%sscrn%.4d.bmp", PAL_PREFIX, iNumBMP), "rb");
if (fp == NULL)
{
break;
}
fclose(fp);
}
if (iNumBMP > 9999)
{
return;
}
//
// Save the screenshot.
//
#if SDL_VERSION_ATLEAST(2,0,0)
SDL_SaveBMP(gpScreen, va("%sscrn%.4d.bmp", PAL_PREFIX, iNumBMP));
#else
SDL_SaveBMP(gpScreenReal, va("%sscrn%.4d.bmp", PAL_PREFIX, iNumBMP));
#endif
}
VOID
VIDEO_BackupScreen(
VOID
)
/*++
Purpose:
Backup the screen buffer.
Parameters:
None.
Return value:
None.
--*/
{
SDL_BlitSurface(gpScreen, NULL, gpScreenBak, NULL);
}
VOID
VIDEO_RestoreScreen(
VOID
)
/*++
Purpose:
Restore the screen buffer which has been saved with VIDEO_BackupScreen().
Parameters:
None.
Return value:
None.
--*/
{
SDL_BlitSurface(gpScreenBak, NULL, gpScreen, NULL);
}
VOID
VIDEO_ShakeScreen(
WORD wShakeTime,
WORD wShakeLevel
)
/*++
Purpose:
Set the screen shake time and level.
Parameters:
[IN] wShakeTime - how many times should we shake the screen.
[IN] wShakeLevel - level of shaking.
Return value:
None.
--*/
{
g_wShakeTime = wShakeTime;
g_wShakeLevel = wShakeLevel;
}
VOID
VIDEO_SwitchScreen(
WORD wSpeed
)
/*++
Purpose:
Switch the screen from the backup screen buffer to the current screen buffer.
NOTE: This will destroy the backup buffer.
Parameters:
[IN] wSpeed - speed of fading (the larger value, the slower).
Return value:
None.
--*/
{
int i, j;
const int rgIndex[6] = {0, 3, 1, 5, 2, 4};
SDL_Rect dstrect;
short offset = 240 - 200;
short screenRealHeight = gpScreenReal->h;
short screenRealY = 0;
if (!bScaleScreen)
{
screenRealHeight -= offset;
screenRealY = offset / 2;
}
wSpeed++;