rnd-20020402-1-src
[rocksndiamonds.git] / src / libgame / system.c
index b2909afd0f406846619dfbcff0a01cc0bb63118a..7962345528d0213a492de88aea4e8cb5d160b01e 100644 (file)
@@ -1,7 +1,7 @@
 /***********************************************************
 * Artsoft Retro-Game Library                               *
 *----------------------------------------------------------*
-* (c) 1994-2000 Artsoft Entertainment                      *
+* (c) 1994-2001 Artsoft Entertainment                      *
 *               Holger Schemel                             *
 *               Detmolder Strasse 189                      *
 *               33604 Bielefeld                            *
@@ -12,6 +12,7 @@
 ***********************************************************/
 
 #include <string.h>
+#include <signal.h>
 
 #include "platform.h"
 
@@ -21,6 +22,8 @@
 
 #include "system.h"
 #include "sound.h"
+#include "setup.h"
+#include "joystick.h"
 #include "misc.h"
 
 
@@ -33,30 +36,34 @@ struct OptionInfo   options;
 struct VideoSystemInfo video;
 struct AudioSystemInfo audio;
 struct GfxInfo         gfx;
+struct ArtworkInfo     artwork;
+struct JoystickInfo    joystick;
+struct SetupInfo       setup;
 
-struct LevelDirInfo    *leveldir_first = NULL;
-struct LevelDirInfo    *leveldir_current = NULL;
+LevelDirTree          *leveldir_first = NULL;
+LevelDirTree          *leveldir_current = NULL;
+int                    level_nr;
 
-Display        *display = NULL;
-Visual        *visual = NULL;
-int            screen = 0;
-Colormap       cmap = None;
+Display                       *display = NULL;
+Visual                *visual = NULL;
+int                    screen = 0;
+Colormap               cmap = None;
 
-DrawWindow     *window = NULL;
-DrawBuffer     *backbuffer = NULL;
-DrawBuffer     *drawto = NULL;
+DrawWindow            *window = NULL;
+DrawBuffer            *backbuffer = NULL;
+DrawBuffer            *drawto = NULL;
 
-int            button_status = MB_NOT_PRESSED;
-boolean                motion_status = FALSE;
+int                    button_status = MB_NOT_PRESSED;
+boolean                        motion_status = FALSE;
 
-int            redraw_mask = REDRAW_NONE;
-int            redraw_tiles = 0;
+int                    redraw_mask = REDRAW_NONE;
+int                    redraw_tiles = 0;
 
-int            FrameCounter = 0;
+int                    FrameCounter = 0;
 
 
 /* ========================================================================= */
-/* init functions                                                            */
+/* init/close functions                                                      */
 /* ========================================================================= */
 
 void InitCommandName(char *argv0)
@@ -68,6 +75,15 @@ void InitCommandName(char *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)
@@ -75,19 +91,38 @@ 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_basename, char *x11_iconmask_basename,
-                    char *msdos_pointer_basename)
+                    char *msdos_pointer_basename,
+                    char *cookie_prefix, char *filename_prefix,
+                    int program_version)
 {
-  char *gfx_dir = getPath2(options.ro_base_directory, GRAPHICS_DIRECTORY);
-  char *x11_icon_filename = getPath2(gfx_dir, x11_icon_basename);
-  char *x11_iconmask_filename = getPath2(gfx_dir, x11_iconmask_basename);
-  char *msdos_pointer_filename = getPath2(gfx_dir, msdos_pointer_basename);
-
-  free(gfx_dir);
+  char *x11_icon_filename =
+    getPath2(options.graphics_directory, x11_icon_basename);
+  char *x11_iconmask_filename =
+    getPath2(options.graphics_directory, x11_iconmask_basename);
+  char *msdos_pointer_filename =
+    getPath2(options.graphics_directory, msdos_pointer_basename);
 
 #if defined(PLATFORM_UNIX)
   program.userdata_directory = unix_userdata_directory;
@@ -101,6 +136,13 @@ void InitProgramInfo(char *unix_userdata_directory, char *program_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);
 }
 
 void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
@@ -115,6 +157,8 @@ void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
   gfx.real_sy = real_sy;
   gfx.full_sxsize = full_sxsize;
   gfx.full_sysize = full_sysize;
+
+  SetDrawDeactivationMask(REDRAW_NONE);                /* do not deactivate drawing */
 }
 
 void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
@@ -140,6 +184,11 @@ void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
   gfx.scrollbuffer_height = scrollbuffer_height;
 }
 
+void SetDrawDeactivationMask(int draw_deactivation_mask)
+{
+  gfx.draw_deactivation_mask = draw_deactivation_mask;
+}
+
 
 /* ========================================================================= */
 /* video functions                                                           */
@@ -152,13 +201,25 @@ inline static int GetRealDepth(int depth)
 
 inline void InitVideoDisplay(void)
 {
-#ifdef TARGET_SDL
+#if defined(TARGET_SDL)
   SDLInitVideoDisplay();
 #else
   X11InitVideoDisplay();
 #endif
 }
 
+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)
@@ -245,6 +306,9 @@ inline void FreeBitmap(Bitmap *bitmap)
     XFreeGC(display, bitmap->stored_clip_gc);
 #endif
 
+  if (bitmap->source_filename)
+    free(bitmap->source_filename);
+
   free(bitmap);
 }
 
@@ -261,11 +325,26 @@ inline void CloseWindow(DrawWindow *window)
 #endif
 }
 
+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;
+  }
+
+  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);
@@ -277,6 +356,9 @@ inline void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
 
 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
@@ -323,6 +405,9 @@ inline void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
                             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);
@@ -336,7 +421,7 @@ 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);
@@ -364,8 +449,8 @@ inline void DrawLine(Bitmap *bitmap, int from_x, int from_y,
        continue;
 
 #if defined(TARGET_SDL)
-      sge_Line(bitmap->surface,
-              from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
+      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);
@@ -399,6 +484,26 @@ inline void DrawLines(Bitmap *bitmap, struct XY *points, int num_points,
 #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)
 {
@@ -406,6 +511,8 @@ inline Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
 
 #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;
 
@@ -452,7 +559,8 @@ inline void KeyboardAutoRepeatOn(void)
                      SDL_DEFAULT_REPEAT_INTERVAL / 2);
   SDL_EnableUNICODE(1);
 #else
-  XAutoRepeatOn(display);
+  if (display)
+    XAutoRepeatOn(display);
 #endif
 }
 
@@ -462,7 +570,8 @@ inline void KeyboardAutoRepeatOff(void)
   SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
   SDL_EnableUNICODE(0);
 #else
-  XAutoRepeatOff(display);
+  if (display)
+    XAutoRepeatOff(display);
 #endif
 }
 
@@ -515,55 +624,75 @@ inline boolean ChangeVideoModeIfNeeded(boolean fullscreen)
   return fullscreen;
 }
 
+Bitmap *LoadImage(char *filename)
+{
+  Bitmap *new_bitmap;
+
+#if defined(TARGET_SDL)
+  new_bitmap = SDLLoadImage(filename);
+#else
+  new_bitmap = X11LoadImage(filename);
+#endif
+
+  return new_bitmap;
+}
+
+Bitmap *LoadCustomImage(char *basename)
+{
+  char *filename = getStringCopy(getCustomImageFilename(basename));
+  Bitmap *new_bitmap;
+
+  if ((new_bitmap = LoadImage(filename)) == NULL)
+    Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
+
+  new_bitmap->source_filename = filename;
+
+  return new_bitmap;
+}
+
 
 /* ========================================================================= */
 /* audio functions                                                           */
 /* ========================================================================= */
 
-inline boolean OpenAudio(struct AudioSystemInfo *audio)
+inline void OpenAudio(void)
 {
-  audio->sound_available = FALSE;
-  audio->loops_available = FALSE;
-  audio->sound_enabled = FALSE;
-  audio->soundserver_pipe[0] = audio->soundserver_pipe[1] = 0;
-  audio->soundserver_pid = 0;
-  audio->device_name = NULL;
-  audio->device_fd = 0;
+  /* always start with reliable default values */
+  audio.sound_available = FALSE;
+  audio.music_available = FALSE;
+  audio.loops_available = FALSE;
+  audio.mods_available = FALSE;
+  audio.sound_enabled = FALSE;
+
+  audio.soundserver_pipe[0] = audio.soundserver_pipe[1] = 0;
+  audio.soundserver_pid = 0;
+  audio.device_name = NULL;
+  audio.device_fd = 0;
+
+  audio.channels = 0;
+  audio.music_channel = 0;
+  audio.music_nr = 0;
 
 #if defined(TARGET_SDL)
-  if (SDLOpenAudio())
-  {
-    audio->sound_available = TRUE;
-    audio->loops_available = TRUE;
-    audio->sound_enabled = TRUE;
-  }
-#elif defined(PLATFORM_MSDOS)
-  if (MSDOSOpenAudio())
-  {
-    audio->sound_available = TRUE;
-    audio->loops_available = TRUE;
-    audio->sound_enabled = TRUE;
-  }
+  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;
+  audio.sound_enabled = FALSE;
 }
 
 inline void SetAudioMode(boolean enabled)
@@ -599,7 +728,7 @@ inline boolean PendingEvent(void)
 inline void NextEvent(Event *event)
 {
 #ifdef TARGET_SDL
-  SDL_WaitEvent(event);
+  SDLNextEvent(event);
 #else
   XNextEvent(display, event);
 #endif
@@ -650,9 +779,39 @@ inline boolean CheckCloseWindowEvent(ClientMessageEvent *event)
 }
 
 
-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
 }