/***********************************************************
-* Rocks'n'Diamonds -- McDuffin Strikes Back! *
+* Artsoft Retro-Game Library *
*----------------------------------------------------------*
-* ©1995 Artsoft Development *
-* Holger Schemel *
-* 33659 Bielefeld-Senne *
-* Telefon: (0521) 493245 *
-* eMail: aeglos@valinor.owl.de *
-* aeglos@uni-paderborn.de *
-* q99492@pbhrzx.uni-paderborn.de *
+* (c) 1994-2001 Artsoft Entertainment *
+* Holger Schemel *
+* Detmolder Strasse 189 *
+* 33604 Bielefeld *
+* Germany *
+* e-mail: info@artsoft.org *
*----------------------------------------------------------*
-* system.c *
+* system.c *
***********************************************************/
-#include "libgame.h"
+#include <string.h>
+#include <signal.h>
+
+#include "platform.h"
+
+#if defined(PLATFORM_MSDOS)
+#include <fcntl.h>
+#endif
+
+#include "system.h"
+#include "sound.h"
+#include "setup.h"
+#include "joystick.h"
+#include "misc.h"
/* ========================================================================= */
struct OptionInfo options;
struct VideoSystemInfo video;
struct AudioSystemInfo audio;
-struct PlayfieldInfo playfield;
+struct GfxInfo gfx;
+struct ArtworkInfo artwork;
+struct JoystickInfo joystick;
+struct SetupInfo setup;
-Display *display = NULL;
-Visual *visual = NULL;
-int screen = 0;
-Colormap cmap = None;
+LevelDirTree *leveldir_first = NULL;
+LevelDirTree *leveldir_current = NULL;
+int level_nr;
-DrawWindow window = NULL;
-DrawBuffer backbuffer = NULL;
-DrawBuffer drawto = NULL;
+Display *display = NULL;
+Visual *visual = NULL;
+int screen = 0;
+Colormap cmap = None;
-int redraw_mask;
-int redraw_tiles;
+DrawWindow *window = NULL;
+DrawBuffer *backbuffer = NULL;
+DrawBuffer *drawto = NULL;
-int FrameCounter = 0;
+int button_status = MB_NOT_PRESSED;
+boolean motion_status = FALSE;
+
+int redraw_mask = REDRAW_NONE;
+int redraw_tiles = 0;
+
+int FrameCounter = 0;
/* ========================================================================= */
-/* video functions */
+/* init/close functions */
/* ========================================================================= */
-inline void InitProgramInfo(char *command_name, char *program_title,
- char *window_title, char *icon_title,
- char *x11_icon_filename,
- char *x11_iconmask_filename,
- char *msdos_pointer_filename)
+void InitCommandName(char *argv0)
{
- program.command_name = command_name;
+ program.command_basename =
+ (strrchr(argv0, '/') ? strrchr(argv0, '/') + 1 : argv0);
+}
+
+void InitExitFunction(void (*exit_function)(int))
+{
+ program.exit_function = exit_function;
+
+ /* set signal handlers to custom exit function */
+ signal(SIGINT, exit_function);
+ signal(SIGTERM, exit_function);
+
+#if defined(TARGET_SDL)
+ /* set exit function to automatically cleanup SDL stuff after exit() */
+ atexit(SDL_Quit);
+#endif
+}
+
+void InitPlatformDependantStuff(void)
+{
+#if defined(PLATFORM_MSDOS)
+ _fmode = O_BINARY;
+#endif
+
+#if !defined(PLATFORM_UNIX)
+ program.userdata_directory = "userdata";
+ initErrorFile();
+#endif
+
+#if defined(TARGET_SDL)
+ if (SDL_Init(SDL_INIT_EVENTTHREAD | SDL_INIT_NOPARACHUTE) < 0)
+ Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
+#endif
+}
+
+void ClosePlatformDependantStuff(void)
+{
+#if !defined(PLATFORM_UNIX)
+ dumpErrorFile();
+#endif
+}
+
+void InitProgramInfo(char *unix_userdata_directory, char *program_title,
+ char *window_title, char *icon_title,
+ char *x11_icon_filename, char *x11_iconmask_filename,
+ char *msdos_pointer_filename,
+ char *cookie_prefix, char *filename_prefix,
+ int program_version)
+{
+#if defined(PLATFORM_UNIX)
+ program.userdata_directory = unix_userdata_directory;
+#else
+ program.userdata_directory = "userdata";
+#endif
+
program.program_title = program_title;
program.window_title = window_title;
program.icon_title = icon_title;
program.x11_icon_filename = x11_icon_filename;
program.x11_iconmask_filename = x11_iconmask_filename;
program.msdos_pointer_filename = msdos_pointer_filename;
+
+ program.cookie_prefix = cookie_prefix;
+ program.filename_prefix = filename_prefix;
+
+ program.version_major = VERSION_MAJOR(program_version);
+ program.version_minor = VERSION_MINOR(program_version);
+ program.version_patch = VERSION_PATCH(program_version);
}
-inline void InitPlayfieldInfo(int sx, int sy, int sxsize, int sysize,
- int real_sx, int real_sy,
- int full_sxsize, int full_sysize)
+void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
+ int real_sx, int real_sy,
+ int full_sxsize, int full_sysize)
{
- playfield.sx = sx;
- playfield.sy = sy;
- playfield.sxsize = sxsize;
- playfield.sysize = sysize;
- playfield.real_sx = real_sx;
- playfield.real_sy = real_sy;
- playfield.full_sxsize = full_sxsize;
- playfield.full_sysize = full_sysize;
+ gfx.sx = sx;
+ gfx.sy = sy;
+ gfx.sxsize = sxsize;
+ gfx.sysize = sysize;
+ gfx.real_sx = real_sx;
+ gfx.real_sy = real_sy;
+ gfx.full_sxsize = full_sxsize;
+ gfx.full_sysize = full_sysize;
+
+ SetDrawDeactivationMask(REDRAW_NONE); /* do not deactivate drawing */
}
-inline void InitDoor1Info(int dx, int dy, int dxsize, int dysize)
+void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
{
- playfield.dx = dx;
- playfield.dy = dy;
- playfield.dxsize = dxsize;
- playfield.dysize = dysize;
+ gfx.dx = dx;
+ gfx.dy = dy;
+ gfx.dxsize = dxsize;
+ gfx.dysize = dysize;
}
-inline void InitDoor2Info(int vx, int vy, int vxsize, int vysize)
+void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
{
- playfield.vx = vx;
- playfield.vy = vy;
- playfield.vxsize = vxsize;
- playfield.vysize = vysize;
+ gfx.vx = vx;
+ gfx.vy = vy;
+ gfx.vxsize = vxsize;
+ gfx.vysize = vysize;
}
-inline void InitScrollbufferInfo(int scrollbuffer_width,
- int scrollbuffer_height)
+void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
{
/* currently only used by MSDOS code to alloc VRAM buffer, if available */
- playfield.scrollbuffer_width = scrollbuffer_width;
- playfield.scrollbuffer_height = scrollbuffer_height;
+ gfx.scrollbuffer_width = scrollbuffer_width;
+ gfx.scrollbuffer_height = scrollbuffer_height;
+}
+
+void SetDrawDeactivationMask(int draw_deactivation_mask)
+{
+ gfx.draw_deactivation_mask = draw_deactivation_mask;
}
+
+/* ========================================================================= */
+/* video functions */
+/* ========================================================================= */
+
inline static int GetRealDepth(int depth)
{
return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
inline void InitVideoDisplay(void)
{
-#ifdef TARGET_SDL
+#if defined(TARGET_SDL)
SDLInitVideoDisplay();
#else
X11InitVideoDisplay();
#endif
}
-inline void InitVideoBuffer(DrawBuffer *backbuffer, DrawWindow *window,
+inline void CloseVideoDisplay(void)
+{
+ KeyboardAutoRepeatOn();
+
+#if defined(TARGET_SDL)
+ SDL_QuitSubSystem(SDL_INIT_VIDEO);
+#else
+
+ if (display)
+ XCloseDisplay(display);
+#endif
+}
+
+inline void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
int width, int height, int depth,
boolean fullscreen)
{
#endif
}
-inline Bitmap CreateBitmapStruct(void)
+inline Bitmap *CreateBitmapStruct(void)
{
#ifdef TARGET_SDL
return checked_calloc(sizeof(struct SDLSurfaceInfo));
#endif
}
-inline Bitmap CreateBitmap(int width, int height, int depth)
+inline Bitmap *CreateBitmap(int width, int height, int depth)
{
- Bitmap new_bitmap = CreateBitmapStruct();
+ Bitmap *new_bitmap = CreateBitmapStruct();
int real_depth = GetRealDepth(depth);
#ifdef TARGET_SDL
#else
Pixmap pixmap;
- if (!(pixmap = XCreatePixmap(display, window->drawable,
- width, height, real_depth)))
+ if ((pixmap = XCreatePixmap(display, window->drawable,
+ width, height, real_depth))
+ == None)
Error(ERR_EXIT, "cannot create pixmap");
+
new_bitmap->drawable = pixmap;
if (window == NULL)
Error(ERR_EXIT, "Window GC needed for Bitmap -- create Window first");
+
new_bitmap->gc = window->gc;
+ new_bitmap->line_gc[0] = window->line_gc[0];
+ new_bitmap->line_gc[1] = window->line_gc[1];
#endif
return new_bitmap;
}
-inline void FreeBitmap(Bitmap bitmap)
+inline static void FreeBitmapPointers(Bitmap *bitmap)
{
if (bitmap == NULL)
return;
SDL_FreeSurface(bitmap->surface);
if (bitmap->surface_masked)
SDL_FreeSurface(bitmap->surface_masked);
+ bitmap->surface = NULL;
+ bitmap->surface_masked = NULL;
#else
+ /* The X11 version seems to have a memory leak here -- although
+ "XFreePixmap()" is called, the correspondig memory seems not
+ to be freed (according to "ps"). The SDL version apparently
+ does not have this problem. */
+
if (bitmap->drawable)
XFreePixmap(display, bitmap->drawable);
if (bitmap->clip_mask)
XFreePixmap(display, bitmap->clip_mask);
if (bitmap->stored_clip_gc)
XFreeGC(display, bitmap->stored_clip_gc);
+ /* the other GCs are only pointers to GCs used elsewhere */
+ bitmap->drawable = None;
+ bitmap->clip_mask = None;
+ bitmap->stored_clip_gc = None;
#endif
+ if (bitmap->source_filename)
+ free(bitmap->source_filename);
+ bitmap->source_filename = NULL;
+}
+
+inline static void TransferBitmapPointers(Bitmap *src_bitmap,
+ Bitmap *dst_bitmap)
+{
+ if (src_bitmap == NULL || dst_bitmap == NULL)
+ return;
+
+ FreeBitmapPointers(dst_bitmap);
+
+ *dst_bitmap = *src_bitmap;
+}
+
+inline void FreeBitmap(Bitmap *bitmap)
+{
+ if (bitmap == NULL)
+ return;
+
+ FreeBitmapPointers(bitmap);
+
free(bitmap);
}
-inline void CloseWindow(DrawWindow window)
+inline void CloseWindow(DrawWindow *window)
{
#ifdef TARGET_X11
if (window->drawable)
#endif
}
-inline void BlitBitmap(Bitmap src_bitmap, Bitmap dst_bitmap,
+inline boolean DrawingDeactivated(int x, int y, int width, int height)
+{
+ if (gfx.draw_deactivation_mask != REDRAW_NONE)
+ {
+ if ((gfx.draw_deactivation_mask & REDRAW_FIELD) &&
+ x < gfx.sx + gfx.sxsize)
+ return TRUE;
+ else if ((gfx.draw_deactivation_mask & REDRAW_DOORS) &&
+ x > gfx.dx)
+ {
+ if ((gfx.draw_deactivation_mask & REDRAW_DOOR_1) &&
+ y < gfx.dy + gfx.dysize)
+ return TRUE;
+ else if ((gfx.draw_deactivation_mask & REDRAW_DOOR_2) &&
+ y > gfx.vy)
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+inline void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
int src_x, int src_y,
int width, int height,
int dst_x, int dst_y)
{
+ if (DrawingDeactivated(dst_x, dst_y, width, height))
+ return;
+
#ifdef TARGET_SDL
SDLCopyArea(src_bitmap, dst_bitmap,
src_x, src_y, width, height, dst_x, dst_y, SDLCOPYAREA_OPAQUE);
#endif
}
-inline void ClearRectangle(Bitmap bitmap, int x, int y, int width, int height)
+inline void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
{
+ if (DrawingDeactivated(x, y, width, height))
+ return;
+
#ifdef TARGET_SDL
SDLFillRectangle(bitmap, x, y, width, height, 0x000000);
#else
#endif
#endif
-inline void SetClipMask(Bitmap bitmap, GC clip_gc, Pixmap clip_pixmap)
+inline void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
{
#ifdef TARGET_X11
if (clip_gc)
#endif
}
-inline void SetClipOrigin(Bitmap bitmap, GC clip_gc, int clip_x, int clip_y)
+inline void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
{
#ifdef TARGET_X11
if (clip_gc)
#endif
}
-inline void BlitBitmapMasked(Bitmap src_bitmap, Bitmap dst_bitmap,
+inline void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
int src_x, int src_y,
int width, int height,
int dst_x, int dst_y)
{
+ if (DrawingDeactivated(dst_x, dst_y, width, height))
+ return;
+
#ifdef TARGET_SDL
SDLCopyArea(src_bitmap, dst_bitmap,
src_x, src_y, width, height, dst_x, dst_y, SDLCOPYAREA_MASKED);
#endif
}
-inline void DrawSimpleWhiteLine(Bitmap bitmap, int from_x, int from_y,
+inline void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
int to_x, int to_y)
{
#ifdef TARGET_SDL
- SDLDrawSimpleLine(bitmap->surface, from_x, from_y, to_x, to_y, 0xffffff);
+ SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, 0xffffff);
#else
XSetForeground(display, bitmap->gc, WhitePixel(display, screen));
XDrawLine(display, bitmap->drawable, bitmap->gc, from_x, from_y, to_x, to_y);
#endif
}
+#if !defined(TARGET_X11_NATIVE)
+inline void DrawLine(Bitmap *bitmap, int from_x, int from_y,
+ int to_x, int to_y, Pixel pixel, int line_width)
+{
+ int x, y;
+
+ for (x=0; x<line_width; x++)
+ {
+ for (y=0; y<line_width; y++)
+ {
+ int dx = x - line_width / 2;
+ int dy = y - line_width / 2;
+
+ if ((x == 0 && y == 0) ||
+ (x == 0 && y == line_width - 1) ||
+ (x == line_width - 1 && y == 0) ||
+ (x == line_width - 1 && y == line_width - 1))
+ continue;
+
+#if defined(TARGET_SDL)
+ SDLDrawLine(bitmap,
+ from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
+#elif defined(TARGET_ALLEGRO)
+ AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
+ to_x + dx, to_y + dy, pixel);
+#endif
+ }
+ }
+}
+#endif
+
+inline void DrawLines(Bitmap *bitmap, struct XY *points, int num_points,
+ Pixel pixel)
+{
+#if !defined(TARGET_X11_NATIVE)
+ int line_width = 4;
+ int i;
+
+ for (i=0; i<num_points - 1; i++)
+ DrawLine(bitmap, points[i].x, points[i].y,
+ points[i + 1].x, points[i + 1].y, pixel, line_width);
+
+ /*
+ SDLDrawLines(bitmap->surface, points, num_points, pixel);
+ */
+#else
+ XSetForeground(display, bitmap->line_gc[1], pixel);
+ XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
+ (XPoint *)points, num_points, CoordModeOrigin);
+ /*
+ XSetForeground(display, gc, BlackPixel(display, screen));
+ */
+#endif
+}
+
+inline Pixel GetPixel(Bitmap *bitmap, int x, int y)
+{
+#if defined(TARGET_SDL)
+ return SDLGetPixel(bitmap, x, y);
+#elif defined(TARGET_ALLEGRO)
+ return AllegroGetPixel(bitmap->drawable, x, y);
+#else
+ unsigned long pixel_value;
+ XImage *pixel_image;
+
+ pixel_image = XGetImage(display, bitmap->drawable, x, y, 1, 1,
+ AllPlanes, ZPixmap);
+ pixel_value = XGetPixel(pixel_image, 0, 0);
+
+ XDestroyImage(pixel_image);
+
+ return pixel_value;
+#endif
+}
+
+inline Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
+ unsigned int color_g, unsigned int color_b)
+{
+ Pixel pixel;
+
+#if defined(TARGET_SDL)
+ pixel = SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
+#elif defined(TARGET_ALLEGRO)
+ pixel = AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
+#elif defined(TARGET_X11_NATIVE)
+ XColor xcolor;
+
+ xcolor.flags = DoRed | DoGreen | DoBlue;
+ xcolor.red = (color_r << 8);
+ xcolor.green = (color_g << 8);
+ xcolor.blue = (color_b << 8);
+ XAllocColor(display, cmap, &xcolor);
+ pixel = xcolor.pixel;
+#endif
+
+ return pixel;
+}
+
+inline Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
+{
+ unsigned int color_r = (color >> 16) & 0xff;
+ unsigned int color_g = (color >> 8) & 0xff;
+ unsigned int color_b = (color >> 0) & 0xff;
+
+ return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
+}
+
/* execute all pending screen drawing operations */
inline void FlushDisplay(void)
{
SDL_DEFAULT_REPEAT_INTERVAL / 2);
SDL_EnableUNICODE(1);
#else
- XAutoRepeatOn(display);
+ if (display)
+ XAutoRepeatOn(display);
#endif
}
SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
SDL_EnableUNICODE(0);
#else
- XAutoRepeatOff(display);
+ if (display)
+ XAutoRepeatOff(display);
#endif
}
-inline boolean PointerInWindow(DrawWindow window)
+inline boolean PointerInWindow(DrawWindow *window)
{
#ifdef TARGET_SDL
return TRUE;
return fullscreen;
}
+Bitmap *LoadImage(char *filename)
+{
+ Bitmap *new_bitmap;
-/* ========================================================================= */
-/* audio functions */
-/* ========================================================================= */
+#if defined(TARGET_SDL)
+ new_bitmap = SDLLoadImage(filename);
+#else
+ new_bitmap = X11LoadImage(filename);
+#endif
-inline boolean OpenAudio(struct AudioSystemInfo *audio)
+ if (new_bitmap)
+ new_bitmap->source_filename = getStringCopy(filename);
+
+ return new_bitmap;
+}
+
+Bitmap *LoadCustomImage(char *basename)
{
- audio->sound_available = FALSE;
- audio->loops_available = FALSE;
- audio->soundserver_pipe[0] = audio->soundserver_pipe[1] = 0;
- audio->soundserver_pid = 0;
- audio->device_name = NULL;
- audio->device_fd = 0;
+ char *filename = getCustomImageFilename(basename);
+ Bitmap *new_bitmap;
-#if defined(TARGET_SDL)
- if (SDLOpenAudio())
+ if (filename == NULL)
+ Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
+
+ if ((new_bitmap = LoadImage(filename)) == NULL)
+ Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
+
+ return new_bitmap;
+}
+
+void ReloadCustomImage(Bitmap *bitmap, char *basename)
+{
+ char *filename = getCustomImageFilename(basename);
+ Bitmap *new_bitmap;
+
+ if (filename == NULL) /* (should never happen) */
{
- audio->sound_available = TRUE;
- audio->loops_available = TRUE;
+ Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
+ return;
}
-#elif defined(PLATFORM_MSDOS)
- if (MSDOSOpenAudio())
+
+ if (strcmp(filename, bitmap->source_filename) == 0)
+ {
+ /* The old and new image are the same (have the same filename and path).
+ This usually means that this image does not exist in this graphic set
+ and a fallback to the existing image is done. */
+
+ return;
+ }
+
+ if ((new_bitmap = LoadImage(filename)) == NULL)
{
- audio->sound_available = TRUE;
- audio->loops_available = TRUE;
+ Error(ERR_WARN, "LoadImage() failed: %s", GetError());
+ return;
+ }
+
+ if (bitmap->width != new_bitmap->width ||
+ bitmap->height != new_bitmap->height)
+ {
+ Error(ERR_WARN, "ReloadCustomImage: new image has wrong dimensions");
+ FreeBitmap(new_bitmap);
+ return;
}
+
+ TransferBitmapPointers(new_bitmap, bitmap);
+ free(new_bitmap);
+}
+
+
+/* ========================================================================= */
+/* audio functions */
+/* ========================================================================= */
+
+inline void OpenAudio(void)
+{
+ /* always start with reliable default values */
+ audio.sound_available = FALSE;
+ audio.music_available = FALSE;
+ audio.loops_available = FALSE;
+
+ audio.sound_enabled = FALSE;
+ audio.sound_deactivated = FALSE;
+
+ audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
+ audio.mixer_pid = -1;
+ audio.device_name = NULL;
+ audio.device_fd = -1;
+
+ audio.num_channels = 0;
+ audio.music_channel = 0;
+ audio.first_sound_channel = 0;
+
+#if defined(TARGET_SDL)
+ SDLOpenAudio();
#elif defined(PLATFORM_UNIX)
- UnixOpenAudio(audio);
+ UnixOpenAudio();
+#elif defined(PLATFORM_MSDOS)
+ MSDOSOpenAudio();
#endif
-
- return audio->sound_available;
}
-inline void CloseAudio(struct AudioSystemInfo *audio)
+inline void CloseAudio(void)
{
#if defined(TARGET_SDL)
SDLCloseAudio();
+#elif defined(PLATFORM_UNIX)
+ UnixCloseAudio();
#elif defined(PLATFORM_MSDOS)
MSDOSCloseAudio();
-#elif defined(PLATFORM_UNIX)
- UnixCloseAudio(audio);
#endif
- audio->sound_available = FALSE;
- audio->loops_available = FALSE;
+ audio.sound_enabled = FALSE;
+}
+
+inline void SetAudioMode(boolean enabled)
+{
+ if (!audio.sound_available)
+ return;
+
+ audio.sound_enabled = enabled;
}
inline void NextEvent(Event *event)
{
#ifdef TARGET_SDL
- SDL_WaitEvent(event);
+ SDLNextEvent(event);
#else
XNextEvent(display, event);
#endif
}
-inline void dummy(void)
+/* ========================================================================= */
+/* joystick functions */
+/* ========================================================================= */
+
+inline void InitJoysticks()
{
-#ifdef TARGET_SDL
-#else
+ int i;
+
+#ifdef NO_JOYSTICK
+ return; /* joysticks generally deactivated by compile-time directive */
+#endif
+
+ /* always start with reliable default values */
+ joystick.status = JOYSTICK_NOT_AVAILABLE;
+ for (i=0; i<MAX_PLAYERS; i++)
+ joystick.fd[i] = -1; /* joystick device closed */
+
+#if defined(TARGET_SDL)
+ SDLInitJoysticks();
+#elif defined(PLATFORM_UNIX)
+ UnixInitJoysticks();
+#elif defined(PLATFORM_MSDOS)
+ MSDOSInitJoysticks();
+#endif
+}
+
+inline boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
+{
+#if defined(TARGET_SDL)
+ return SDLReadJoystick(nr, x, y, b1, b2);
+#elif defined(PLATFORM_UNIX)
+ return UnixReadJoystick(nr, x, y, b1, b2);
+#elif defined(PLATFORM_MSDOS)
+ return MSDOSReadJoystick(nr, x, y, b1, b2);
#endif
}