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- {$M 16384,0,0}
-
- program main;
- uses fgmain, fgmisc;
-
- const
- VISUAL = 0;
- HIDDEN = 1;
-
- var
- status : integer;
- new_mode : integer;
- old_mode : integer;
- frame, offset, i : integer;
-
- begin
-
- { initialize the video environment }
-
- new_mode := fg_bestmode(320,200,2);
- if (new_mode < 0) or (new_mode = 12) then
- begin
- write('This program requires a 320 ');
- writeln('x 200 color graphics mode.');
- exit;
- end;
- old_mode := fg_getmode;
- fg_setmode(new_mode);
- status := fg_allocate(HIDDEN);
-
- { draw the background in the upper left corner }
-
- fg_setpage(HIDDEN);
- fg_setcolor(1);
- fg_rect(0,95,0,49);
- fg_setcolor(15);
- fg_move(48,25);
- fg_ellipse(20,20);
-
- { copy it to the center of the visual page }
-
- fg_transfer(0,95,0,49,112,124,HIDDEN,VISUAL);
-
- { slide the object across the background three times }
-
- fg_setcolor(10);
- for i := 0 to 35 do
- begin
- frame := i mod 12;
- offset := 10 * frame - 10;
- fg_transfer(0,95,20,29,112,105,HIDDEN,HIDDEN);
- fg_rect(112+offset,131+offset,96,105);
- fg_transfer(112,207,96,105,112,105,HIDDEN,VISUAL);
- fg_waitfor(2);
- end;
-
- { restore the original video mode and return to DOS }
-
- status := fg_freepage(HIDDEN);
- fg_setmode(old_mode);
- fg_reset;
- end.