+ }
+}
+
+void JoinRectangles(int *x, int *y, int *width, int *height,
+ int x2, int y2, int width2, int height2)
+{
+ // do not join with "off-screen" rectangle
+ if (x2 == -1 || y2 == -1)
+ return;
+
+ *x = MIN(*x, x2);
+ *y = MIN(*y, y2);
+ *width = MAX(*width, width2);
+ *height = MAX(*height, height2);
+}
+
+void SetAnimStatus(int anim_status_new)
+{
+ if (anim_status_new == GAME_MODE_MAIN)
+ anim_status_new = GAME_MODE_PSEUDO_MAINONLY;
+ else if (anim_status_new == GAME_MODE_SCORES)
+ anim_status_new = GAME_MODE_PSEUDO_SCORESOLD;
+
+ global.anim_status_next = anim_status_new;
+
+ // directly set screen modes that are entered without fading
+ if ((global.anim_status == GAME_MODE_PSEUDO_MAINONLY &&
+ global.anim_status_next == GAME_MODE_PSEUDO_TYPENAME) ||
+ (global.anim_status == GAME_MODE_PSEUDO_TYPENAME &&
+ global.anim_status_next == GAME_MODE_PSEUDO_MAINONLY))
+ global.anim_status = global.anim_status_next;
+}
+
+void SetGameStatus(int game_status_new)
+{
+ if (game_status_new != game_status)
+ game_status_last_screen = game_status;
+
+ game_status = game_status_new;
+
+ SetAnimStatus(game_status_new);
+}
+
+void SetFontStatus(int game_status_new)
+{
+ static int last_game_status = -1;
+
+ if (game_status_new != -1)
+ {
+ // set game status for font use after storing last game status
+ last_game_status = game_status;
+ game_status = game_status_new;
+ }
+ else
+ {
+ // reset game status after font use from last stored game status
+ game_status = last_game_status;
+ }
+}
+
+void ResetFontStatus()
+{
+ SetFontStatus(-1);
+}
+
+boolean CheckIfPlayfieldViewportHasChanged()
+{
+ // if game status has not changed, playfield viewport has not changed either
+ if (game_status == game_status_last)
+ return FALSE;
+
+ // check if playfield viewport has changed with current game status
+ struct RectWithBorder *vp_playfield = &viewport.playfield[game_status];
+ int new_real_sx = vp_playfield->x;
+ int new_real_sy = vp_playfield->y;
+ int new_full_sxsize = vp_playfield->width;
+ int new_full_sysize = vp_playfield->height;
+
+ return (new_real_sx != REAL_SX ||
+ new_real_sy != REAL_SY ||
+ new_full_sxsize != FULL_SXSIZE ||
+ new_full_sysize != FULL_SYSIZE);
+}
+
+boolean CheckIfGlobalBorderOrPlayfieldViewportHasChanged()
+{
+ return (CheckIfGlobalBorderHasChanged() ||
+ CheckIfPlayfieldViewportHasChanged());
+}
+
+void ChangeViewportPropertiesIfNeeded()
+{
+ boolean use_mini_tilesize = (level.game_engine_type == GAME_ENGINE_TYPE_MM ?
+ FALSE : setup.small_game_graphics);
+ int gfx_game_mode = game_status;
+ int gfx_game_mode2 = (game_status == GAME_MODE_EDITOR ? GAME_MODE_DEFAULT :
+ game_status);
+ struct RectWithBorder *vp_window = &viewport.window[gfx_game_mode];
+ struct RectWithBorder *vp_playfield = &viewport.playfield[gfx_game_mode];
+ struct RectWithBorder *vp_door_1 = &viewport.door_1[gfx_game_mode];
+ struct RectWithBorder *vp_door_2 = &viewport.door_2[gfx_game_mode2];
+ struct RectWithBorder *vp_door_3 = &viewport.door_2[GAME_MODE_EDITOR];
+ int new_win_xsize = vp_window->width;
+ int new_win_ysize = vp_window->height;
+ int border_size = vp_playfield->border_size;
+ int new_sx = vp_playfield->x + border_size;
+ int new_sy = vp_playfield->y + border_size;
+ int new_sxsize = vp_playfield->width - 2 * border_size;
+ int new_sysize = vp_playfield->height - 2 * border_size;
+ int new_real_sx = vp_playfield->x;
+ int new_real_sy = vp_playfield->y;
+ int new_full_sxsize = vp_playfield->width;
+ int new_full_sysize = vp_playfield->height;
+ int new_dx = vp_door_1->x;
+ int new_dy = vp_door_1->y;
+ int new_dxsize = vp_door_1->width;
+ int new_dysize = vp_door_1->height;
+ int new_vx = vp_door_2->x;
+ int new_vy = vp_door_2->y;
+ int new_vxsize = vp_door_2->width;
+ int new_vysize = vp_door_2->height;
+ int new_ex = vp_door_3->x;
+ int new_ey = vp_door_3->y;
+ int new_exsize = vp_door_3->width;
+ int new_eysize = vp_door_3->height;
+ int new_tilesize_var = (use_mini_tilesize ? MINI_TILESIZE : game.tile_size);
+ int tilesize = (gfx_game_mode == GAME_MODE_PLAYING ? new_tilesize_var :
+ gfx_game_mode == GAME_MODE_EDITOR ? MINI_TILESIZE : TILESIZE);
+ int new_scr_fieldx = new_sxsize / tilesize;
+ int new_scr_fieldy = new_sysize / tilesize;
+ int new_scr_fieldx_buffers = new_sxsize / new_tilesize_var;
+ int new_scr_fieldy_buffers = new_sysize / new_tilesize_var;
+ boolean init_gfx_buffers = FALSE;
+ boolean init_video_buffer = FALSE;
+ boolean init_gadgets_and_anims = FALSE;
+ boolean init_em_graphics = FALSE;
+
+ if (new_win_xsize != WIN_XSIZE ||
+ new_win_ysize != WIN_YSIZE)
+ {
+ WIN_XSIZE = new_win_xsize;
+ WIN_YSIZE = new_win_ysize;
+
+ init_video_buffer = TRUE;
+ init_gfx_buffers = TRUE;
+ init_gadgets_and_anims = TRUE;
+
+ // printf("::: video: init_video_buffer, init_gfx_buffers\n");
+ }
+
+ if (new_scr_fieldx != SCR_FIELDX ||
+ new_scr_fieldy != SCR_FIELDY)
+ {
+ /* this always toggles between MAIN and GAME when using small tile size */
+
+ SCR_FIELDX = new_scr_fieldx;
+ SCR_FIELDY = new_scr_fieldy;
+
+ // printf("::: new_scr_fieldx != SCR_FIELDX ...\n");
+ }
+
+ if (new_sx != SX ||
+ new_sy != SY ||
+ new_dx != DX ||
+ new_dy != DY ||
+ new_vx != VX ||
+ new_vy != VY ||
+ new_ex != EX ||
+ new_ey != EY ||
+ new_sxsize != SXSIZE ||
+ new_sysize != SYSIZE ||
+ new_dxsize != DXSIZE ||
+ new_dysize != DYSIZE ||
+ new_vxsize != VXSIZE ||
+ new_vysize != VYSIZE ||
+ new_exsize != EXSIZE ||
+ new_eysize != EYSIZE ||
+ new_real_sx != REAL_SX ||
+ new_real_sy != REAL_SY ||
+ new_full_sxsize != FULL_SXSIZE ||
+ new_full_sysize != FULL_SYSIZE ||
+ new_tilesize_var != TILESIZE_VAR
+ )
+ {
+ // ------------------------------------------------------------------------
+ // determine next fading area for changed viewport definitions
+ // ------------------------------------------------------------------------
+
+ // start with current playfield area (default fading area)
+ FADE_SX = REAL_SX;
+ FADE_SY = REAL_SY;
+ FADE_SXSIZE = FULL_SXSIZE;
+ FADE_SYSIZE = FULL_SYSIZE;
+
+ // add new playfield area if position or size has changed
+ if (new_real_sx != REAL_SX || new_real_sy != REAL_SY ||
+ new_full_sxsize != FULL_SXSIZE || new_full_sysize != FULL_SYSIZE)
+ {
+ JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
+ new_real_sx, new_real_sy, new_full_sxsize,new_full_sysize);
+ }
+
+ // add current and new door 1 area if position or size has changed
+ if (new_dx != DX || new_dy != DY ||
+ new_dxsize != DXSIZE || new_dysize != DYSIZE)
+ {
+ JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
+ DX, DY, DXSIZE, DYSIZE);
+ JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
+ new_dx, new_dy, new_dxsize, new_dysize);
+ }
+
+ // add current and new door 2 area if position or size has changed
+ if (new_dx != VX || new_dy != VY ||
+ new_dxsize != VXSIZE || new_dysize != VYSIZE)
+ {
+ JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
+ VX, VY, VXSIZE, VYSIZE);
+ JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
+ new_vx, new_vy, new_vxsize, new_vysize);
+ }
+
+ // ------------------------------------------------------------------------
+ // handle changed tile size
+ // ------------------------------------------------------------------------
+
+ if (new_tilesize_var != TILESIZE_VAR)
+ {
+ // printf("::: new_tilesize_var != TILESIZE_VAR\n");
+
+ // changing tile size invalidates scroll values of engine snapshots
+ FreeEngineSnapshotSingle();
+
+ // changing tile size requires update of graphic mapping for EM engine
+ init_em_graphics = TRUE;
+ }
+
+ SX = new_sx;
+ SY = new_sy;
+ DX = new_dx;
+ DY = new_dy;
+ VX = new_vx;
+ VY = new_vy;
+ EX = new_ex;
+ EY = new_ey;
+ SXSIZE = new_sxsize;
+ SYSIZE = new_sysize;
+ DXSIZE = new_dxsize;
+ DYSIZE = new_dysize;
+ VXSIZE = new_vxsize;
+ VYSIZE = new_vysize;
+ EXSIZE = new_exsize;
+ EYSIZE = new_eysize;
+ REAL_SX = new_real_sx;
+ REAL_SY = new_real_sy;
+ FULL_SXSIZE = new_full_sxsize;
+ FULL_SYSIZE = new_full_sysize;
+ TILESIZE_VAR = new_tilesize_var;
+
+ init_gfx_buffers = TRUE;
+ init_gadgets_and_anims = TRUE;
+
+ // printf("::: viewports: init_gfx_buffers\n");
+ // printf("::: viewports: init_gadgets_and_anims\n");
+ }
+
+ if (init_gfx_buffers)
+ {
+ // printf("::: init_gfx_buffers\n");
+
+ SCR_FIELDX = new_scr_fieldx_buffers;
+ SCR_FIELDY = new_scr_fieldy_buffers;
+
+ InitGfxBuffers();
+
+ SCR_FIELDX = new_scr_fieldx;
+ SCR_FIELDY = new_scr_fieldy;
+
+ SetDrawDeactivationMask(REDRAW_NONE);
+ SetDrawBackgroundMask(REDRAW_FIELD);
+ }
+
+ if (init_video_buffer)
+ {
+ // printf("::: init_video_buffer\n");
+
+ InitVideoBuffer(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH, setup.fullscreen);
+ InitImageTextures();
+ }
+
+ if (init_gadgets_and_anims)
+ {
+ // printf("::: init_gadgets_and_anims\n");
+
+ InitGadgets();
+ InitGlobalAnimations();
+ }
+
+ if (init_em_graphics)
+ {
+ InitGraphicInfo_EM();