/* tiles currently on screen */
static int screentiles[MAX_PLAYFIELD_HEIGHT + 2][MAX_PLAYFIELD_WIDTH + 2];
static int crumbled_state[MAX_PLAYFIELD_HEIGHT + 2][MAX_PLAYFIELD_WIDTH + 2];
-static boolean redraw[MAX_PLAYFIELD_WIDTH + 2][MAX_PLAYFIELD_HEIGHT + 2];
-
-/* copy the entire screen to the window at the scroll position */
void BlitScreenToBitmap_EM(Bitmap *target_bitmap)
{
+ /* blit all (up to four) parts of the scroll buffer to the target bitmap */
+
int x = screen_x % (MAX_BUF_XSIZE * TILEX);
int y = screen_y % (MAX_BUF_YSIZE * TILEY);
int sx, sy, sxsize, sysize;
void BackToFront_EM(void)
{
- static int screen_x_last = -1, screen_y_last = -1;
- static boolean scrolling_last = FALSE;
- int left = screen_x / TILEX;
- int top = screen_y / TILEY;
- boolean scrolling = (screen_x != screen_x_last || screen_y != screen_y_last);
- int x, y;
-
- SyncDisplay();
-
- if (redraw_tiles > REDRAWTILES_THRESHOLD || scrolling || scrolling_last)
- {
- /* blit all (up to four) parts of the scroll buffer to the backbuffer */
- BlitScreenToBitmap_EM(backbuffer);
-
- /* blit the completely updated backbuffer to the window (in one blit) */
- BlitBitmap(backbuffer, window, SX, SY, SXSIZE, SYSIZE, SX, SY);
- }
- else
- {
- boolean half_shifted_x = (screen_x % TILEX != 0);
- boolean half_shifted_y = (screen_y % TILEY != 0);
-
- int sx, sy;
- int xsize = SXSIZE;
- int ysize = SYSIZE;
- int full_xsize = lev.width * TILEX;
- int full_ysize = lev.height * TILEY;
-
- sx = SX + (full_xsize < xsize ? (xsize - full_xsize) / 2 : 0);
- sy = SY + (full_ysize < ysize ? (ysize - full_ysize) / 2 : 0);
-
- int x1 = 0, x2 = SCR_FIELDX - (half_shifted_x ? 0 : 1);
- int y1 = 0, y2 = SCR_FIELDY - (half_shifted_y ? 0 : 1);
- int scroll_xoffset = (half_shifted_x ? TILEX / 2 : 0);
- int scroll_yoffset = (half_shifted_y ? TILEY / 2 : 0);
-
- InitGfxClipRegion(TRUE, SX, SY, SXSIZE, SYSIZE);
-
- for (x = x1; x <= x2; x++)
- {
- for (y = y1; y <= y2; y++)
- {
- int xx = (left + x) % MAX_BUF_XSIZE;
- int yy = (top + y) % MAX_BUF_YSIZE;
-
- if (redraw[xx][yy])
- BlitBitmap(screenBitmap, window,
- xx * TILEX, yy * TILEY, TILEX, TILEY,
- sx + x * TILEX - scroll_xoffset,
- sy + y * TILEY - scroll_yoffset);
- }
- }
-
- InitGfxClipRegion(FALSE, -1, -1, -1, -1);
- }
-
- FlushDisplay();
-
- for (x = 0; x < MAX_BUF_XSIZE; x++)
- for (y = 0; y < MAX_BUF_YSIZE; y++)
- redraw[x][y] = FALSE;
- redraw_tiles = 0;
-
- screen_x_last = screen_x;
- screen_y_last = screen_y;
- scrolling_last = scrolling;
-}
-
-void blitscreen(void)
-{
- BackToFront_EM();
+ BlitBitmap(backbuffer, window, SX, SY, SXSIZE, SYSIZE, SX, SY);
}
static struct GraphicInfo_EM *getObjectGraphic(int x, int y)
if (draw_masked)
{
if (width > 0 && height > 0)
- {
- SetClipOrigin(g->bitmap, g->bitmap->stored_clip_gc,
- dst_x - src_x, dst_y - src_y);
BlitBitmapMasked(g->bitmap, screenBitmap,
src_x, src_y, width, height, dst_x, dst_y);
- }
}
else
{
int dst_y = sy * TILEY + cy;
if (draw_masked)
- {
- SetClipOrigin(g->crumbled_bitmap, g->crumbled_bitmap->stored_clip_gc,
- dst_x - src_x, dst_y - src_y);
BlitBitmapMasked(g->crumbled_bitmap, screenBitmap,
src_x, src_y, width, height, dst_x, dst_y);
- }
else
BlitBitmap(g->crumbled_bitmap, screenBitmap,
src_x, src_y, width, height, dst_x, dst_y);
/* draw the player to current location */
dst_x = x1;
dst_y = y1;
- SetClipOrigin(g->bitmap, g->bitmap->stored_clip_gc,
- dst_x - src_x, dst_y - src_y);
BlitBitmapMasked(g->bitmap, screenBitmap,
src_x, src_y, TILEX, TILEY, dst_x, dst_y);
/* draw the player to opposite wrap-around column */
dst_x = x1 - MAX_BUF_XSIZE * TILEX;
dst_y = y1;
- SetClipOrigin(g->bitmap, g->bitmap->stored_clip_gc,
- dst_x - src_x, dst_y - src_y);
BlitBitmapMasked(g->bitmap, screenBitmap,
g->src_x, g->src_y, TILEX, TILEY, dst_x, dst_y);
/* draw the player to opposite wrap-around row */
dst_x = x1;
dst_y = y1 - MAX_BUF_YSIZE * TILEY;
- SetClipOrigin(g->bitmap, g->bitmap->stored_clip_gc,
- dst_x - src_x, dst_y - src_y);
BlitBitmapMasked(g->bitmap, screenBitmap,
g->src_x, g->src_y, TILEX, TILEY, dst_x, dst_y);
}
screentiles[sy][sx] = obj;
crumbled_state[sy][sx] = crm;
-
- redraw[sx][sy] = TRUE;
- redraw_tiles++;
}
}
}
/* redraw screen tiles in the next frame (player may have left the tiles) */
screentiles[old_sy][old_sx] = -1;
screentiles[new_sy][new_sx] = -1;
-
- /* mark screen tiles as dirty (force screen refresh with changed content) */
- redraw[old_sx][old_sy] = TRUE;
- redraw[new_sx][new_sy] = TRUE;
- redraw_tiles += 2;
}
}
for (i = 0; i < MAX_PLAYERS; i++)
blitplayer(&ply[i]);
- blitscreen();
+ BlitScreenToBitmap_EM(backbuffer);
+ BackToFront_EM();
Delay(wait_delay_value);
for (i = 0; i < MAX_PLAYERS; i++)
blitplayer(&ply[i]);
- blitscreen();
+ BlitScreenToBitmap_EM(backbuffer);
+ BackToFront_EM();
Delay(wait_delay_value);
}
for (i = 0; i < MAX_PLAYERS; i++)
blitplayer(&ply[i]);
}
-
-void game_animscreen(void)
-{
- RedrawPlayfield_EM(FALSE);
-}
-
-void DrawGameDoorValues_EM()
-{
-}