+++ /dev/null
-/***********************************************************
-* Rocks'n'Diamonds -- McDuffin Strikes Back! *
-*----------------------------------------------------------*
-* (c) 1995-98 Artsoft Entertainment *
-* Holger Schemel *
-* Oststrasse 11a *
-* 33604 Bielefeld *
-* phone: ++49 +521 290471 *
-* email: aeglos@valinor.owl.de *
-*----------------------------------------------------------*
-* msdos.c *
-***********************************************************/
-
-#ifdef MSDOS
-#include "main.h"
-#include "tools.h"
-#include "sound.h"
-#include "files.h"
-#include "joystick.h"
-
-DECLARE_GFX_DRIVER_LIST(
- GFX_DRIVER_VBEAF
- GFX_DRIVER_VESA2L
- GFX_DRIVER_VESA1)
-DECLARE_COLOR_DEPTH_LIST(COLOR_DEPTH_8)
-DECLARE_DIGI_DRIVER_LIST(DIGI_DRIVER_SB)
-DECLARE_MIDI_DRIVER_LIST()
-DECLARE_JOYSTICK_DRIVER_LIST(JOYSTICK_DRIVER_STANDARD)
-
-static int key_buffer[OSD_MAX_KEY];
-static XEvent event_buffer[MAX_EVENT_BUFFER];
-static int pending_events;
-static boolean joystick_event;
-static boolean mouse_installed = FALSE;
-static int last_mouse_pos;
-static int last_mouse_b;
-static int last_joystick_state;
-static BITMAP* video_bitmap;
-
-boolean wait_for_vsync;
-
-extern int playing_sounds;
-extern struct SoundControl playlist[MAX_SOUNDS_PLAYING];
-extern struct SoundControl emptySoundControl;
-
-void allegro_drivers()
-{
- int i;
-
- for(i = 0; i < MAX_EVENT_BUFFER; i++);
- event_buffer[i].type = 0;
- for(i=0; i < OSD_MAX_KEY; i++) key_buffer[i] = KeyReleaseMask;
- last_mouse_pos = mouse_pos;
- last_mouse_b = 0;
-
- pending_events = 0;
- clear_keybuf();
-
- i_love_bill = TRUE;
- install_keyboard();
- install_timer();
- if (install_mouse() > 0) mouse_installed = TRUE;
- install_joystick(JOY_TYPE_2PADS);
-
- load_joystick_data(JOYDAT_FILE);
- last_joystick_state = 0;
- joystick_event = FALSE;
-
- reserve_voices(MAX_SOUNDS_PLAYING, 0);
- if(install_sound(DIGI_AUTODETECT, MIDI_NONE, "ROCKS.SND") == -1)
- if(install_sound(DIGI_SB, MIDI_NONE, NULL) == -1) sound_status = SOUND_OFF;
-
-}
-
-boolean hide_mouse(Display *display, int x, int y,
- unsigned int width, unsigned int height)
-{
- if(mouse_x + display->mouse_ptr->w < x || mouse_x > x+width) return FALSE;
- if(mouse_y + display->mouse_ptr->h < y || mouse_y > y+height) return FALSE;
- show_mouse(NULL);
- return(TRUE);
-}
-
-void unhide_mouse(Display *display)
-{
- if(mouse_installed) show_mouse(video_bitmap);
-}
-
-int get_joystick_state()
-{
- int state = 0;
- poll_joystick();
-
- if (joy[joystick_nr].stick[0].axis[0].d1) state |= JOY_LEFT;
- if (joy[joystick_nr].stick[0].axis[0].d2) state |= JOY_RIGHT;
- if (joy[joystick_nr].stick[0].axis[1].d1) state |= JOY_UP;
- if (joy[joystick_nr].stick[0].axis[1].d2) state |= JOY_DOWN;
- if (joy[joystick_nr].button[0].b) state |= JOY_BUTTON_1;
-
- switch (state)
- {
- case (JOY_DOWN | JOY_LEFT):
- state = XK_KP_1;
- break;
- case (JOY_DOWN):
- state = XK_KP_2;
- break;
- case (JOY_DOWN | JOY_RIGHT):
- state = XK_KP_3;
- break;
- case (JOY_LEFT):
- state = XK_KP_4;
- break;
- case (JOY_RIGHT):
- state = XK_KP_6;
- break;
- case (JOY_UP | JOY_LEFT):
- state = XK_KP_7;
- break;
- case (JOY_UP):
- state = XK_KP_8;
- break;
- case (JOY_UP | JOY_RIGHT):
- state = XK_KP_9;
- break;
-
- case (JOY_DOWN | JOY_BUTTON_1):
- state = XK_X;
- break;
- case (JOY_LEFT | JOY_BUTTON_1):
- state = XK_S;
- break;
- case (JOY_RIGHT | JOY_BUTTON_1):
- state = XK_D;
- break;
- case (JOY_UP | JOY_BUTTON_1):
- state = XK_E;
- break;
-
- default:
- state = 0;
- }
-
- return(state);
-}
-
-unsigned char get_ascii(KeySym key)
-{
- switch(key) {
-
- case OSD_KEY_Q: return 'Q';
- case OSD_KEY_W: return 'W';
- case OSD_KEY_E: return 'E';
- case OSD_KEY_R: return 'R';
- case OSD_KEY_T: return 'T';
- case OSD_KEY_Y: return 'Y';
- case OSD_KEY_U: return 'U';
- case OSD_KEY_I: return 'I';
- case OSD_KEY_O: return 'O';
- case OSD_KEY_P: return 'P';
- case OSD_KEY_A: return 'A';
- case OSD_KEY_S: return 'S';
- case OSD_KEY_D: return 'D';
- case OSD_KEY_F: return 'F';
- case OSD_KEY_G: return 'G';
- case OSD_KEY_H: return 'H';
- case OSD_KEY_J: return 'J';
- case OSD_KEY_K: return 'K';
- case OSD_KEY_L: return 'L';
- case OSD_KEY_Z: return 'Z';
- case OSD_KEY_X: return 'X';
- case OSD_KEY_C: return 'C';
- case OSD_KEY_V: return 'V';
- case OSD_KEY_B: return 'B';
- case OSD_KEY_N: return 'N';
- case OSD_KEY_M: return 'M';
- case OSD_KEY_1: return '1';
- case OSD_KEY_2: return '2';
- case OSD_KEY_3: return '3';
- case OSD_KEY_4: return '4';
- case OSD_KEY_5: return '5';
- case OSD_KEY_6: return '6';
- case OSD_KEY_7: return '7';
- case OSD_KEY_8: return '8';
- case OSD_KEY_9: return '9';
- case OSD_KEY_0: return '0';
- case OSD_KEY_SPACE: return ' ';
- }
- return (0);
-}
-
-long osd_key_pressed(int keycode)
-{
- if (keycode == OSD_KEY_RCONTROL) keycode = KEY_RCONTROL;
- if (keycode == OSD_KEY_ALTGR) keycode = KEY_ALTGR;
-
- if (key[keycode])
- return(KeyPressMask);
- else
- return(KeyReleaseMask);
-}
-
-void XMapWindow(Display* display, Window w)
-{
- int x, y;
- unsigned int width, height;
- boolean mouse_off;
-
- x = display->screens[display->default_screen].x;
- y = display->screens[display->default_screen].y;
- width = display->screens[display->default_screen].width;
- height = display->screens[display->default_screen].height;
-
- mouse_off = hide_mouse(display, x, y, width, height);
- blit((BITMAP *)w, video_bitmap, 0, 0, x, y, width, height);
- if(mouse_off) unhide_mouse(display);
-}
-
-Display *XOpenDisplay(char* dummy)
-{
- Screen *MyScreens;
- Display *MyDisplay;
- BITMAP *MyMouse = NULL;
- RGB pal[256];
-
- MyScreens = malloc(sizeof(Screen));
- MyDisplay = malloc(sizeof(Display));
-
- if(MOUSE_FILENAME)
- MyMouse = load_gif(MOUSE_FILENAME, pal);
-
- MyScreens[0].cmap = 0;
- MyScreens[0].root = 0;
- MyScreens[0].white_pixel = 0xFF;
- MyScreens[0].black_pixel = 0x00;
- MyScreens[0].video_bitmap = NULL;
-
- MyDisplay->default_screen = 0;
- MyDisplay->screens = MyScreens;
- MyDisplay->mouse_ptr = MyMouse;
-
- allegro_init();
- allegro_drivers();
- set_color_depth(8);
- set_gfx_mode(GFX_AUTODETECT, 320, 200, 0, 0); // force Windows 95 to switch to fullscreen mode
- rest(200);
- set_gfx_mode(GFX_AUTODETECT, XRES, YRES, 0, 0);
-
- return(MyDisplay);
-}
-
-Window XCreateSimpleWindow(
- Display* display,
- Window parent,
- int x,
- int y,
- unsigned int width,
- unsigned int height,
- unsigned int border_width,
- unsigned long border,
- unsigned long background)
-{
- video_bitmap = create_video_bitmap(XRES, YRES);
- clear_to_color(video_bitmap, background);
-
- display->screens[display->default_screen].video_bitmap = video_bitmap;
- display->screens[display->default_screen].x = x;
- display->screens[display->default_screen].y = y;
- display->screens[display->default_screen].width = XRES;
- display->screens[display->default_screen].height = YRES;
-
- set_mouse_sprite(display->mouse_ptr);
- set_mouse_range(display->screens[display->default_screen].x+1,
- display->screens[display->default_screen].y+1,
- display->screens[display->default_screen].x+WIN_XSIZE+1,
- display->screens[display->default_screen].y+WIN_YSIZE+1);
-
- show_video_bitmap(video_bitmap);
-
- return((Window) video_bitmap);
-}
-
-int XReadBitmapFile(
- Display* display,
- Drawable d,
- char* filename,
- unsigned int* width_return,
- unsigned int* height_return,
- Pixmap* bitmap_return,
- int* x_hot_return,
- int* y_hot_return)
-{
- BITMAP *bmp;
- RGB pal[256];
-
- if((bmp = load_gif(filename, pal)) == NULL)
- return(BitmapOpenFailed);
-
- *width_return = bmp->w;
- *height_return = bmp->h;
- *x_hot_return = -1;
- *y_hot_return = -1;
- *bitmap_return = (Pixmap) bmp;
-
- return(BitmapSuccess);
-}
-
-Status XStringListToTextProperty(char** list, int count, XTextProperty* text_prop_return)
-{
- char *string;
-
- if(count >= 1)
- {
- string = malloc(strlen(list[0]+1));
- strcpy(string, list[0]);
- text_prop_return->value = (unsigned char *) string;
- return(1);
- }
- else
- {
- text_prop_return = NULL;
- }
- return(0);
-}
-
-void XFree(void* data)
-{
- if(data) free(data);
-}
-
-GC XCreateGC(Display* display, Drawable d, unsigned long value_mask, XGCValues* values)
-{
- XGCValues *gcv;
- gcv = malloc(sizeof(XGCValues));
- gcv->foreground = values->foreground;
- gcv->background = values->background;
- gcv->graphics_exposures = values->graphics_exposures;
- gcv->clip_mask = values->clip_mask;
- gcv->clip_x_origin = values->clip_x_origin;
- gcv->clip_y_origin = values->clip_y_origin;
- gcv->value_mask = value_mask;
- return((GC) gcv);
-}
-
-void XFillRectangle(
- Display* display,
- Drawable d,
- GC gc,
- int x,
- int y,
- unsigned int width,
- unsigned int height)
-{
- boolean mouse_off;
-
- if((BITMAP *) d == video_bitmap)
- {
- x += display->screens[display->default_screen].x;
- y += display->screens[display->default_screen].y;
- freeze_mouse_flag = TRUE;
- mouse_off = hide_mouse(display, x, y, width, height);
- }
-
- rectfill((BITMAP *) d, x, y, x+width, y+height, ((XGCValues *)gc)->foreground);
- if(mouse_off) unhide_mouse(display);
- freeze_mouse_flag = FALSE;
-}
-
-Pixmap XCreatePixmap(
- Display* display,
- Drawable d,
- unsigned int width,
- unsigned int height,
- unsigned int depth)
-{
- BITMAP *MyBitmap = NULL;
-
- if(GFX_HW_VRAM_BLIT&gfx_capabilities && width == FXSIZE && height == FYSIZE)
- MyBitmap = create_video_bitmap(width, height);
-
- if(MyBitmap == NULL)
- MyBitmap = create_bitmap(width, height);
-
- return((Pixmap) MyBitmap);
-}
-
-inline void XCopyArea(
- Display* display,
- Drawable src,
- Drawable dest,
- GC gc,
- int src_x,
- int src_y,
- unsigned int width,
- unsigned int height,
- int dest_x,
- int dest_y)
-{
- boolean mouse_off;
-
- if((BITMAP *) src == video_bitmap )
- {
- src_x += display->screens[display->default_screen].x;
- src_y += display->screens[display->default_screen].y;
- }
- if((BITMAP *) dest == video_bitmap )
- {
- dest_x += display->screens[display->default_screen].x;
- dest_y += display->screens[display->default_screen].y;
- freeze_mouse_flag = TRUE;
- mouse_off = hide_mouse(display, dest_x, dest_y, width, height);
- }
-
- if(wait_for_vsync)
- {
- wait_for_vsync = FALSE;
- vsync();
- }
-
- if(((XGCValues *)gc)->value_mask&GCClipMask)
- masked_blit((BITMAP *) src, (BITMAP *) dest, src_x, src_y, dest_x, dest_y, width, height);
- else
- blit((BITMAP *) src, (BITMAP *) dest, src_x, src_y, dest_x, dest_y, width, height);
-
- if(mouse_off) unhide_mouse(display);
- freeze_mouse_flag = FALSE;
-}
-
-int XpmReadFileToPixmap(
- Display* display,
- Drawable d,
- char* filename,
- Pixmap* pixmap_return,
- Pixmap* shapemask_return,
- XpmAttributes* attributes)
-{
- BITMAP *bmp;
- RGB pal[256];
-
- if((bmp = load_gif(filename, pal)) == NULL)
- return(XpmOpenFailed);
-
- *pixmap_return = (Pixmap) bmp;
- set_pallete(pal);
-
- return(XpmSuccess);
-}
-
-void XFreePixmap(Display* display, Pixmap pixmap)
-{
- if( pixmap != DUMMY_MASK &&
- (is_memory_bitmap((BITMAP *) pixmap) || is_screen_bitmap((BITMAP *) pixmap)) )
- destroy_bitmap((BITMAP *) pixmap);
-}
-
-void XFreeGC(Display* display, GC gc)
-{
- XGCValues *gcv;
-
- gcv = (XGCValues *) gc;
- if(gcv) free(gcv);
-}
-
-void XCloseDisplay(Display* display)
-{
- BITMAP * bmp;
- bmp = video_bitmap;
-
- if(is_screen_bitmap(bmp))
- destroy_bitmap(bmp);
- if(display->screens)
- free(display->screens);
- if(display)
- free(display);
-}
-
-void XNextEvent(Display* display, XEvent* event_return)
-{
- while(!pending_events) XPending(display);
-
- memcpy(event_return, &event_buffer[pending_events], sizeof(XEvent));
- pending_events--;
-}
-
-int XPending(Display* display)
-{
- int i, state;
- static boolean joy_button_2 = FALSE;
-
- XKeyEvent *xkey;
- XButtonEvent *xbutton;
- XMotionEvent *xmotion;
-
- // joystick event (simulating keyboard event)
-
- state = get_joystick_state();
-
- if (joy[joystick_nr].button[1].b && !joy_button_2)
- {
- pending_events++;
- xkey = (XKeyEvent *) &event_buffer[pending_events];
- xkey->type = KeyPress;
- xkey->state = XK_B;
- joy_button_2 = TRUE;
- }
- else if (!joy[joystick_nr].button[1].b && joy_button_2)
- {
- pending_events++;
- xkey = (XKeyEvent *) &event_buffer[pending_events];
- xkey->type = KeyRelease;
- xkey->state = XK_B;
- joy_button_2 = FALSE;
- }
-
- if(state && !joystick_event)
- {
- pending_events++;
- xkey = (XKeyEvent *) &event_buffer[pending_events];
- xkey->type = KeyPress;
- xkey->state = state;
- joystick_event = TRUE;
- last_joystick_state = state;
- }
- else if((state != last_joystick_state) && joystick_event)
- {
- pending_events++;
- xkey = (XKeyEvent *) &event_buffer[pending_events];
- xkey->type = KeyRelease;
- xkey->state = last_joystick_state;
- joystick_event = FALSE;
- }
-
- // keyboard event
-
- for(i=0; i < OSD_MAX_KEY+1 && pending_events < MAX_EVENT_BUFFER; i++)
- {
- state = osd_key_pressed(i);
-
- if(state != key_buffer[i])
- {
- key_buffer[i] = state;
- pending_events++;
- xkey = (XKeyEvent *) &event_buffer[pending_events];
- xkey->type = state&KeyPressMask ? KeyPress : KeyRelease;
- xkey->state = i;
- }
- }
-
- // mouse motion event
-
- if((mouse_pos != last_mouse_pos && mouse_b != last_mouse_b))
- {
- last_mouse_pos = mouse_pos;
- pending_events++;
- xmotion = (XMotionEvent *) &event_buffer[pending_events];
- xmotion->type = MotionNotify;
- xmotion->x = mouse_x - display->screens[display->default_screen].x;
- xmotion->y = mouse_y - display->screens[display->default_screen].y;
- return;
- }
-
- // mouse button event
-
- if(mouse_b != last_mouse_b)
- {
- for(i = 1; i<4; i<<=1)
- {
- if((last_mouse_b&i) != (mouse_b&i))
- {
- pending_events++;
- xbutton = (XButtonEvent *) &event_buffer[pending_events];
- xbutton->type = mouse_b&i ? ButtonPress : ButtonRelease;
- xbutton->button = i;
- xbutton->x = mouse_x - display->screens[display->default_screen].x;
- xbutton->y = mouse_y - display->screens[display->default_screen].y;
- }
- }
- last_mouse_b = mouse_b;
- }
-
- return pending_events;
-}
-
-KeySym XLookupKeysym(XKeyEvent* key_event, int index)
-{
- return(key_event->state);
-}
-
-void sound_handler(struct SoundControl snd_ctrl)
-{
- int i;
-
- if (snd_ctrl.fade_sound)
- {
- if (!playing_sounds)
- return;
-
- for(i=0;i<MAX_SOUNDS_PLAYING;i++)
- if ((snd_ctrl.stop_all_sounds || playlist[i].nr == snd_ctrl.nr) && !playlist[i].fade_sound) {
- playlist[i].fade_sound = TRUE;
- if(voice_check(playlist[i].voice))
- voice_ramp_volume(playlist[i].voice, 1000, 0);
- playlist[i].loop = PSND_NO_LOOP;
- }
- }
- else if (snd_ctrl.stop_all_sounds)
- {
- if (!playing_sounds)
- return;
- SoundServer_StopAllSounds();
- }
- else if (snd_ctrl.stop_sound)
- {
- if (!playing_sounds)
- return;
- SoundServer_StopSound(snd_ctrl.nr);
- }
-
- for(i=0;i<MAX_SOUNDS_PLAYING;i++)
- {
- if (!playlist[i].active || playlist[i].loop)
- continue;
-
- playlist[i].playingpos = voice_get_position(playlist[i].voice);
- playlist[i].volume = voice_get_volume(playlist[i].voice);
- if (playlist[i].playingpos == -1 || !playlist[i].volume)
- {
- deallocate_voice(playlist[i].voice);
- playlist[i] = emptySoundControl;
- playing_sounds--;
- }
- }
-
- if (snd_ctrl.active)
- SoundServer_InsertNewSound(snd_ctrl);
-
-}
-
-
-// GIF Loader
-// by Paul Bartrum
-
-int _color_load_depth(int depth);
-
-struct LZW_STRING
-{
- short base;
- char new;
- short length;
-};
-
-PACKFILE *f;
-int empty_string, curr_bit_size, bit_overflow;
-int bit_pos, data_pos, data_len, entire, code;
-int cc, string_length, i, bit_size;
-unsigned char string[4096];
-struct LZW_STRING str[4096];
-BITMAP *bmp;
-int image_x, image_y, image_w, image_h, x, y;
-int interlace;
-
-
-void clear_table(void)
-{
- empty_string = cc + 2;
- curr_bit_size = bit_size + 1;
- bit_overflow = 0;
-}
-
-
-void get_code(void)
-{
- if(bit_pos + curr_bit_size > 8) {
- if(data_pos >= data_len) { data_len = pack_getc(f); data_pos = 0; }
- entire = (pack_getc(f) << 8) + entire;
- data_pos ++;
- }
- if(bit_pos + curr_bit_size > 16) {
- if(data_pos >= data_len) { data_len = pack_getc(f); data_pos = 0; }
- entire = (pack_getc(f) << 16) + entire;
- data_pos ++;
- }
- code = (entire >> bit_pos) & ((1 << curr_bit_size) - 1);
- if(bit_pos + curr_bit_size > 8)
- entire >>= 8;
- if(bit_pos + curr_bit_size > 16)
- entire >>= 8;
- bit_pos = (bit_pos + curr_bit_size) % 8;
- if(bit_pos == 0) {
- if(data_pos >= data_len) { data_len = pack_getc(f); data_pos = 0; }
- entire = pack_getc(f);
- data_pos ++;
- }
-}
-
-
-void get_string(int num)
-{
- if(num < cc)
- {
- string_length = 1;
- string[0] = str[num].new;
- }
- else
- {
- i = str[num].length;
- string_length = i;
- while(i > 0)
- {
- i --;
- string[i] = str[num].new;
- num = str[num].base;
- }
- /* if(num != -1) **-{[ERROR]}-** */
- }
-}
-
-
-void output_string(void)
-{
- for(i = 0; i < string_length; i ++)
- {
- putpixel(bmp, x, y, string[i]);
- x ++;
- if(x >= image_x + image_w)
- {
- x = image_x;
- y += interlace;
- if(interlace)
- {
- if(y >= image_y + image_h)
- {
- if(interlace == 8 && (y - image_y) % 8 == 0) {
- interlace = 8;
- y = image_y + 4;
- }
- else if(interlace == 8 && (y - image_y) % 8 == 4) {
- interlace = 4;
- y = image_y + 2;
- }
- else if(interlace == 4) {
- interlace = 2;
- y = image_y + 1;
- }
- }
- }
- }
- }
-}
-
-/* load_gif:
- * Loads a 2-256 colour GIF file onto a bitmap, returning the bitmap
- * structure and storing the pallete data in the specified pallete (this
- * should be an array of at least 256 RGB structures).
- */
-BITMAP *load_gif(char *filename, RGB *pal)
-{
- int width, height, depth;
- int old;
- BITMAP *bmp2;
- int dest_depth;
-
- f = pack_fopen(filename, F_READ);
- if (!f) /* can't open file */
- return NULL;
-
- i = pack_mgetw(f) << 8;
- i += pack_getc(f);
- if(i != 0x474946) /* is it really a GIF? */
- {
- pack_fclose(f);
- return NULL;
- }
- pack_fseek(f, 3); /* skip version */
-
- width = pack_igetw(f);
- height = pack_igetw(f);
-
- bmp = create_bitmap_ex(8, width, height);
- if(bmp == NULL) {
- pack_fclose(f);
- return NULL;
- }
- clear(bmp);
-
- i = pack_getc(f);
- if(i & 128) /* no global colour table? */
- depth = (i & 7) + 1;
- else
- depth = 0;
-
- pack_fseek(f, 2); /* skip background colour and aspect ratio */
-
- if(pal && depth) /* only read palette if pal and depth are not 0 */
- {
- for(i = 0; i < (1 << depth); i ++)
- {
- pal[i].r = pack_getc(f) / 4;
- pal[i].g = pack_getc(f) / 4;
- pal[i].b = pack_getc(f) / 4;
- }
- }
- else
- if(depth)
- pack_fseek(f, (1 << depth) * 3);
-
- do
- {
- i = pack_getc(f);
- switch(i)
- {
- case 0x2C: /* Image Descriptor */
- image_x = pack_igetw(f);
- image_y = pack_igetw(f); /* individual image dimensions */
- image_w = pack_igetw(f);
- image_h = pack_igetw(f);
-
- i = pack_getc(f);
- if(i & 64)
- interlace = 8;
- else
- interlace = 1;
-
- if(i & 128)
- {
- depth = (i & 7) + 1;
- if(pal)
- {
- for(i = 0; i < (1 << depth); i ++)
- {
- pal[i].r = pack_getc(f) / 4;
- pal[i].g = pack_getc(f) / 4;
- pal[i].b = pack_getc(f) / 4;
- }
- }
- else
- pack_fseek(f, (1 << depth) * 3);
- }
-
- /* lzw stream starts now */
- bit_size = pack_getc(f);
- cc = 1 << bit_size;
-
- /* initialise string table */
- for(i = 0; i < cc; i ++)
- {
- str[i].base = -1;
- str[i].new = i;
- str[i].length = 1;
- }
-
- /* initialise the variables */
- bit_pos = 0;
- data_len = pack_getc(f); data_pos = 0;
- entire = pack_getc(f); data_pos ++;
- string_length = 0; x = image_x; y = image_y;
-
- /* starting code */
- clear_table();
- get_code();
- if(code == cc)
- get_code();
- get_string(code);
- output_string();
- old = code;
-
- while(TRUE)
- {
- get_code();
-
- if(code == cc)
- {
- /* starting code */
- clear_table();
- get_code();
- get_string(code);
- output_string();
- old = code;
- }
- else if(code == cc + 1)
- {
- break;
- }
- else if(code < empty_string)
- {
- get_string(code);
- output_string();
-
- if(bit_overflow == 0) {
- str[empty_string].base = old;
- str[empty_string].new = string[0];
- str[empty_string].length = str[old].length + 1;
- empty_string ++;
- if(empty_string == (1 << curr_bit_size))
- curr_bit_size ++;
- if(curr_bit_size == 13) {
- curr_bit_size = 12;
- bit_overflow = 1;
- }
- }
-
- old = code;
- }
- else
- {
- get_string(old);
- string[str[old].length] = string[0];
- string_length ++;
-
- if(bit_overflow == 0) {
- str[empty_string].base = old;
- str[empty_string].new = string[0];
- str[empty_string].length = str[old].length + 1;
- empty_string ++;
- if(empty_string == (1 << curr_bit_size))
- curr_bit_size ++;
- if(curr_bit_size == 13) {
- curr_bit_size = 12;
- bit_overflow = 1;
- }
- }
-
- output_string();
- old = code;
- }
- }
- break;
- case 0x21: /* Extension Introducer */
- i = pack_getc(f);
- if(i == 0xF9) /* Graphic Control Extension */
- {
- pack_fseek(f, 1); /* skip size (it's 4) */
- i = pack_getc(f);
- if(i & 1) /* is transparency enabled? */
- {
- pack_fseek(f, 2);
- pack_getc(f); /* transparent colour */
- }
- else
- pack_fseek(f, 3);
- }
- i = pack_getc(f);
- while(i) /* skip Data Sub-blocks */
- {
- pack_fseek(f, i);
- i = pack_getc(f);
- }
- break;
- case 0x3B: /* Trailer - end of data */
- pack_fclose(f);
-
- /* convert to correct colour depth */
- dest_depth = _color_load_depth(8);
-
- if (dest_depth != 8)
- {
- bmp2 = create_bitmap_ex(dest_depth, bmp->w, bmp->h);
- if (!bmp2)
- {
- destroy_bitmap(bmp);
- return NULL;
- }
-
- select_palette(pal);
- blit(bmp, bmp2, 0, 0, 0, 0, bmp->w, bmp->h);
- unselect_palette();
-
- destroy_bitmap(bmp);
- bmp = bmp2;
- }
-
- return bmp;
- }
- } while(TRUE);
-
- /* this is never executed but DJGPP complains if you leave it out */
- return NULL;
-}
-
-#endif
projects / rocksndiamonds.git / blobdiff