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- { ModeX Turbo Pascal Demo Program }
- { Converted to Turbo Pascal by Scott Wyatt }
- { Original program written in QuickBasic by Matt Prichard }
- { Released to the Public Domain }
- { }
- { Thanks to Matt Prichard for his *EXCELLENT* ModeX Library }
- { Additional Comments by Matt Pritchard }
-
- Uses Crt;
-
- {$L modex2.obj} { This file is the external ModeX Library .OBJ }
- {$F+}
-
- { Mode Setting Routines }
-
- Function SET_VGA_MODEX (Mode,MaxXpos,MaxYpos,Pages : integer) : integer; external;
- Function SET_MODEX (Mode:integer) : Integer; external;
-
- { Graphics Primitives }
-
- Procedure CLEAR_VGA_SCREEN (Color:integer); external;
- Procedure SET_POINT (Xpos,Ypos,Color : integer); external;
- Function READ_POINT (Xpos,Ypos:integer) : integer; external;
- Procedure FILL_BLOCK (Xpos1,Ypos1,Xpos2,Ypos2,Color:integer); external;
- Procedure DRAW_LINE (Xpos1,Ypos1,Xpos2,Ypos2,Color:integer); external;
-
- { VGA DAC Routines }
-
- Procedure SET_DAC_REGISTER (RegNo,Red,Green,Blue:integer); external;
- Procedure GET_DAC_REGISTER (RegNo,Red,Green,Blue:integer); external;
-
- { Page and Window Control Routines }
-
- Procedure SET_ACTIVE_PAGE (PageNo:integer); external;
- Function GET_ACTIVE_PAGE : integer; external;
- Procedure SET_DISPLAY_PAGE (PageNo:integer); external;
- Function GET_DISPLAY_PAGE : integer; external;
- Procedure SET_WINDOW (DisplayPage,XOffset,YOffset : integer); external;
- Function GET_X_OFFSET : integer; external;
- Function GET_Y_OFFSET : integer; external;
- Procedure SYNC_DISPLAY; external;
-
- { Text Display Routines }
-
- Procedure GPRINTC (CharNum,Xpos,Ypos,ColorF,ColorB:integer); external;
- Procedure TGPRINTC ( CharNum,Xpos,Ypos,ColorF : integer); external;
- Procedure PRINT_STR (Var Text;MaxLen,Xpos,Ypos,ColorF,ColorB:integer); external;
- Procedure TPRINT_STR (Var Text;MaxLen,Xpos,Ypos,ColorF:integer); external;
- Procedure SET_DISPLAY_FONT (Var FontData;FontNumber:integer); external;
-
- { Sprite and VGA memory -> Vga memory Copy Routines }
-
- Procedure DRAW_BITMAP (Var Image;Xpos,Ypos,Width,Height:integer); external;
- Procedure TDRAW_BITMAP (Var Image;Xpos,Ypos,Width,Height:integer); external;
- Procedure COPY_PAGE (SourcePage,DestPage:integer); external;
- Procedure COPY_BITMAP (SourcePage,X1,Y1,X2,Y2,DestPage,DestX1,DestY1:integer); external;
-
- {$F-}
-
-
- TYPE Sprite = Record
- Xpos : INTEGER;
- Ypos : INTEGER;
- XDir : INTEGER;
- YDir : INTEGER;
- Shape : INTEGER;
- LastX : INTEGER;
- LastY : INTEGER;
- END;
-
-
- CONST MaxShapes = 32;
- Circle_16 : Array[1..16,1..16] of byte =
- (( 0, 0, 0, 0, 0, 0, 20, 20, 20, 20, 0, 0, 0, 0, 0, 0),
- ( 0, 0, 0, 0, 20, 20, 20, 20, 20, 20, 20, 20, 0, 0, 0, 0),
- ( 0, 0, 0, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 0, 0, 0),
- ( 0, 0, 20, 20, 20, 20, 0, 0, 0, 0, 20, 20, 20, 20, 0, 0),
- ( 0, 20, 20, 20, 20, 0, 0, 0, 0, 0, 0, 20, 20, 20, 20, 0),
- ( 0, 20, 20, 20, 0, 0, 0, 0, 0, 0, 0, 0, 20, 20, 20, 0),
- ( 20, 20, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 20, 20),
- ( 20, 20, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 20, 20),
- ( 20, 20, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 20, 20),
- ( 20, 20, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 20, 20),
- ( 0, 20, 20, 20, 0, 0, 0, 0, 0, 0, 0, 0, 20, 20, 20, 0),
- ( 0, 20, 20, 20, 20, 0, 0, 0, 0, 0, 0, 20, 20, 20, 20, 0),
- ( 0, 0, 20, 20, 20, 20, 0, 0, 0, 0, 20, 20, 20, 20, 0, 0),
- ( 0, 0, 0, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 0, 0, 0),
- ( 0, 0, 0, 0, 20, 20, 20, 20, 20, 20, 20, 20, 0, 0, 0, 0),
- ( 0, 0, 0, 0, 0, 0, 20, 20, 20, 20, 0, 0, 0, 0, 0, 0));
- Square_16 : Array[1..16,1..16] of byte =
- (( 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21),
- ( 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21));
- Diamond : Array[1..8,1..8] of byte =
- (( 0, 0, 0, 22, 22, 0, 0, 0),
- ( 0, 0, 22, 22, 22, 22, 0, 0),
- ( 0, 22, 22, 0, 0, 22, 22, 0),
- ( 22, 22, 0, 0, 0, 0, 22, 22),
- ( 22, 22, 0, 0, 0, 0, 22, 22),
- ( 0, 22, 22, 0, 0, 22, 22, 0),
- ( 0, 0, 22, 22, 22, 22, 0, 0),
- ( 0, 0, 0, 22, 22, 0, 0, 0));
- Rectangle : Array[1..8,1..3] of byte =
- (( 23, 23, 23),
- ( 23, 23, 23),
- ( 23, 23, 23),
- ( 23, 23, 23),
- ( 23, 23, 23),
- ( 23, 23, 23),
- ( 23, 23, 23),
- ( 23, 23, 23));
-
- { Global Variables ? }
-
- Var
- XCenter,X1,Y1,X2,Y2,Z,Colr,XChars,YChars,X,Y,N,Gap : Integer;
- s : string;
- s1 : Array[1..35] of Char;
- ch : Char;
- obj : Array[1..64] of Sprite;
- ScreenX,ScreenY : Integer;
- c, dc, SpriteX, SpriteY, CurrentPage, LastPage : Integer;
- SetColor, SDir, PrevColor, PDir : Byte;
- XView, YView : Integer;
- XView_Change, YView_Change : Integer;
- Right : Boolean;
- Number_Of_Shapes : Byte;
-
-
- { Error Handler - Returns to Text Mode & Displays Error }
-
- Procedure ERROR_OUT(s : string);
- Begin
- asm
- mov ah,0
- mov al,3
- int 10h
- end;
- WriteLn(s);
- Halt(0);
- END;
-
- { Routine to Print a PASCAL string using Print_Str }
-
- Procedure Print_Text(s : string; X,Y,BColor,FColor : integer);
- Var
- s1 : Array[1..135] of Char;
- i : byte;
- Begin
- For i := 1 to Length(s) DO
- s1[i] := s[i];
- Print_Str(s1,Length(s),X,Y,BColor,FColor);
- End;
-
- { Routine to Transparently Print a PASCAL string using TPrint_Str }
-
- Procedure TPrint_Text(s : string; X,Y,Color : integer);
- Var
- s1 : Array[1..135] of Char;
- i : byte;
- Begin
- For i := 1 to Length(s) DO
- s1[i] := s[i];
- TPrint_Str(s1,Length(s),X,Y,Color);
- End;
-
- { Routines to show test patterns for a given mode }
-
- Procedure Demo_Res(Mode, Xmax, Ymax : integer);
- Begin
-
- Str(mode,s);
- If Set_ModeX(Mode) = 0 Then
- Error_Out('Unable to SET_MODEX '+s);
- Clear_VGA_Screen(0);
-
- XCenter := Xmax div 2;
- X1 := 10;
- Y1 := 10;
- X2 := Xmax - 1;
- Y2 := Ymax - 1;
-
- FOR Z := 0 TO 3 DO
- Begin
- Colr := 31 - Z * 2;
- Draw_Line(X1 + Z, Y1 + Z, X2 - Z, Y1 + Z, Colr);
- Draw_Line(X1 + Z, Y1 + Z, X1 + Z, Y2 - Z, Colr);
- Draw_Line(X1 + Z, Y2 - Z, X2 - Z, Y2 - Z, Colr);
- Draw_Line(X2 - Z, Y1 + Z, X2 - Z, Y2 - Z, Colr);
- End;
-
- XChars := Xmax div 10;
- YChars := Ymax div 10;
-
- FOR X := 0 TO XChars - 1 DO
- Begin
- TGPRINTC(48 + ((X + 1) MOD 10), X * 10 + 1, 1, 9 + ((X div 8) MOD 7));
- DRAW_LINE(X * 10 + 9, 0, X * 10 + 9, 3, 15);
- End;
- FOR Y := 0 TO YChars - 1 DO
- Begin
- TGPRINTC(48 + ((Y + 1) MOD 10), 1, Y * 10 + 1, 9 + ((Y div 10) MOD 7));
- DRAW_LINE(0, Y * 10 + 9, 3, Y * 10 + 9, 15);
- End;
-
- { Test Line Drawing }
-
- FOR X := 0 TO 63 DO
- Begin
- N := 15 + ((X * 3) div 4);
- SET_DAC_REGISTER(64 + X, N, N, N);
- SET_DAC_REGISTER(128 + X, 0, N, N);
- DRAW_LINE(103 - X, 60, 40 + X, 123, 64 + X);
- DRAW_LINE(40, 60 + X, 103, 123 - X, 128 + X);
- End;
- s := 'Line Test';
- PRINT_Text(s,37,130,1,0);
-
- { Test Block Fills }
-
- Y := 60;
- Gap := 0;
- FOR X := 0 TO 9 DO
- Begin
- FILL_BLOCK(120, Y, 120 + X, Y + Gap, 64 + X);
- FILL_BLOCK(140 - (15 - X), Y, 150 + X, Y + Gap, 230 + X);
- FILL_BLOCK(170 - (15 - X), Y, 170, Y + Gap, 128 + X);
- Y := Y + Gap + 2;
- Gap := Gap + 1;
- End;
- s := 'Fill Test';
- Print_Text(s,110, 46, 2,0);
-
- { Test Pixel Write and Read }
-
- FOR X := 190 TO 250 DO
- FOR Y := 60 TO 122 DO
- SET_POINT( X, Y, X + Y + X + Y);
-
- s := 'Pixel Test';
- Print_Text(s,182, 130, 3,0);
-
- FOR X := 190 TO 250 DO
- FOR Y := 60 TO 122 DO
- IF READ_POINT(X, Y) <> ((X + Y + X + Y) AND 255) THEN
- WriteLn('READ_PIXEL Failure');
-
- { Display rest of screen }
-
- s := ' This is a MODE X demo ';
- Print_Text(s,XCenter - (Length(s) * 4), 20, 3, 1);
- s := 'Screen Resolution is by ';
- X := XCenter - (Length(s) * 4);
- Print_Text(s,X,30,4,0);
- Str(XMax,s);
- Print_Text(s, X + 8 * 21, 30, 8, 0);
- Str(YMax,s);
- Print_Text(s, X + 8 * 28, 30, 15, 0);
-
- FOR X := 0 TO 15 DO
- Begin
- SET_DAC_REGISTER( 230 + X, 63 - X * 4, 0, 15 + X * 3);
- DRAW_LINE(30 + X, Ymax - 6 - X, Xmax - 20 - X, Ymax - 6 - X, 230 + X);
- End;
- s := 'Press <ANY KEY> to Continue';
- For x := 1 to length(s) DO
- s1[x] := s[x];
- TPrint_Str(s1, length(s), XCenter - (26 * 4), Ymax - 18, 5);
-
- Ch := ReadKey;
- IF Ch = #27 Then
- Error_Out('Abort');
-
- End;
-
-
- { Initialize Sprites for Sprite Demo }
-
- Procedure Init_Sprites;
- Var i : byte;
- Begin
- For i := 1 to 64 DO
- Begin
- Obj[i].XPos := Random(300)+10;
- Obj[i].YPos := Random(200)+20;
- Obj[i].XDir := Random(10)-5;
- Obj[i].YDir := Random(10)-5;
- If (Obj[i].XDir = 0) AND (Obj[i].YDir = 0) Then
- Begin
- Obj[i].XDir := Random(5) + 1;
- Obj[i].YDir := Random(5) + 1;
- End;
- Obj[i].Shape := Random(4)+1;
- Obj[i].LastX := obj[i].XPos;
- Obj[i].LastY := obj[i].YPos;
- End;
- End;
-
- Procedure Set_Sprites(number : byte);
- Var i : Byte;
- Begin
- For i := 1 to number DO
- Begin
- obj[i].LastX := obj[i].XPos;
- obj[i].LastY := obj[i].YPos;
- obj[i].XPos := obj[i].XPos + obj[i].XDir;
- obj[i].YPos := obj[i].YPos + obj[i].YDir;
- If (obj[i].XPos > 335) OR (obj[i].XPos < 5 ) Then
- obj[i].XDir := -(obj[i].XDir);
- If (obj[i].YPos > 220) OR (obj[i].YPos < 5) Then
- obj[i].YDir := -(obj[i].YDir);
- End;
- For i := 1 to number DO
- Case obj[i].Shape of
- 1 : TDraw_Bitmap(Circle_16,obj[i].XPos,obj[i].YPos,16,16);
- 2 : TDraw_Bitmap(Square_16,obj[i].XPos,obj[i].YPos,16,16);
- 3 : TDraw_Bitmap(Diamond,obj[i].XPos,obj[i].YPos,8,8);
- 4 : TDraw_Bitmap(Rectangle,obj[i].XPos,obj[i].YPos,3,8);
- End;
- End;
-
- Procedure Remove_Sprites(p,number : byte);
- Var i : byte;
- Begin
- For i := 1 to number DO
- Copy_Bitmap(2,obj[i].LastX,obj[i].LastY,obj[i].LastX+16,obj[i].LastY+16,p,Obj[i].LastX,Obj[i].LastY);
- End;
-
- Procedure Page_Demo;
- Begin
- Number_Of_Shapes := 64;
- XView_Change := 1;
- YView_Change := 1;
- XView := 1;
- YView := 1;
- Right := TRUE;
- ScreenX := 360;
- ScreenY := 240;
- PrevColor := 0;
- SetColor := 3;
- SDir := 1;
- PDir := 1;
- Str(0,s);
-
- IF SET_VGA_MODEX(0, ScreenX, ScreenY, 3) = 0 THEN
- ERROR_OUT('Unable to SET_VGA_MODEX' + S);
-
- SET_ACTIVE_PAGE(0);
- CLEAR_VGA_SCREEN(0);
- PRINT_TEXT('This is a Test of the Following Functions:', 10, 9, 15, 0);
- DRAW_LINE( 10, 18, 350, 18, 4);
- Print_Text('SET_ACTIVE_PAGE', 10, 20, 1, 0);
- Print_Text('SET_DISPLAY_PAGE', 10, 30, 3,0);
- Print_Text('SET_DAC_REGISTER', 10, 40, 3, 0);
- Print_Text('CLEAR_VGA_SCREEN', 10, 50, 13, 0);
- Print_Text('TDRAW_BITMAP', 10, 60, 14, 0);
- Print_Text('COPY_PAGE', 10, 70, 3, 0);
- Print_Text('COPY_BITMAP', 10, 80, 13, 0);
- Print_Text('GPRINTC', 10, 90, 1, 0);
- Print_Text('TGPRINTC', 10, 100, 3, 0);
- Print_Text('SYNC_DISPLAY', 10, 110, 3, 0);
- Print_Text('SET_WINDOW', 10, 120, 14, 0);
- Print_Text('VIRTUAL SCREEN SIZES', 190, 20, 1, 0);
- Print_Text(' SMOOTH SCROLLING', 190, 30, 3, 0);
- Print_Text(' SPRITE ANIMATION', 190, 40, 13, 0);
- Print_Text(' PAGE FLIPPING', 190, 50, 3, 0);
- Print_Text(' COLOR CYCLING', 190, 60, 14, 0);
-
- FOR X := 0 TO 60 DO
- Begin
- SET_DAC_REGISTER( 50 + X, 3 + X, 0, 60 - X);
- SET_DAC_REGISTER( 150 + X, 3 + X, 0, 60 - X);
- End;
-
- c := 0;
- DC := 1;
- FOR X := 0 TO ScreenX div 2 DO
- Begin
- DRAW_LINE( ScreenX div 2 - 1, ScreenY div 4, X, ScreenY - 1, c + 50);
- DRAW_LINE( ScreenX div 2, ScreenY div 4, ScreenX - X - 1, ScreenY - 1, c + 50);
- c := c + DC;
- IF (c = 0) OR (c = 60) THEN DC := -DC;
- End;
-
- TPrint_Text('Press <ESC> to Continue', 82, 190, 15);
- TPrint_Text('<+> = Fewer Shapes <-> = More Shapes', 32, 204, 12);
- COPY_PAGE( 0, 1);
- COPY_PAGE( 0, 2);
-
- Ch := #0;
- CurrentPage := 1;
- LastPage := 0;
- Set_Sprites(Number_Of_Shapes);
- For c := 1 to 4 DO
- Set_Dac_Register(19+c,63-(c*10),0,0);
-
- While Ch <> #27 DO
- Begin
- Set_Active_Page(currentpage);
- Set_Sprites(Number_Of_Shapes);
- If Right Then
- Begin
- XView := XView + XView_Change;
- If (XView > 38) OR (XView < 2) Then
- Begin
- XView_Change := -(XView_Change);
- Right := FALSE;
- End;
- End
- Else
- Begin
- YView := YView + YView_Change;
- If (YView > 38) OR (YView < 2) Then
- Begin
- YView_Change := -(YView_Change);
- Right := TRUE;
- End;
- End;
-
- Set_Window(currentpage,XView,YView);
- Set_Display_Page(currentpage);
- Set_Dac_Register(50 + PrevColor, 3 + PrevColor, 0, 60 - PrevColor);
- Set_Dac_Register(50 + SetColor, SetColor, 10, 63 - SetColor);
- Set_Dac_Register(150 + PrevColor, 3 + PrevColor, 0, 60 - PrevColor);
- Set_Dac_Register(150 + SetColor, 63, 63, SetColor);
- SetColor := SetColor + SDir;
- IF (SetColor = 60) OR (SetColor = 0) THEN SDir := -SDir;
- PrevColor := PrevColor + PDir;
- IF (PrevColor = 60) OR (PrevColor = 0) THEN PDir := -PDir;
- Remove_Sprites(lastpage,Number_Of_Shapes);
-
- If Keypressed Then
- Begin
- Ch := ReadKey;
- Case Ch of
- '-' : If Number_Of_Shapes > 1 Then
- Begin
- c := Number_Of_Shapes;
- Copy_Bitmap(2,obj[c].XPos,obj[c].YPos,obj[c].XPos+16,obj[c].YPos+16,
- currentpage,obj[c].XPos,obj[c].YPos);
- Dec(Number_Of_Shapes);
- End;
- '+' : If Number_Of_Shapes < 64 Then Inc(Number_Of_Shapes);
- End;
- End;
- lastpage := (lastpage+1) MOD 2;
- currentpage := (currentpage+1) MOD 2;
- End;
- END;
-
- { MAIN ROUTINE - Run Through Demos and Exit }
-
- Begin
-
- Randomize;
- Init_Sprites;
-
- Demo_Res(0, 320, 200);
- Demo_Res(1, 320, 400);
- Demo_Res(2, 360, 200);
- Demo_Res(3, 360, 400);
- Demo_Res(4, 320, 240);
- Demo_Res(5, 320, 480);
- Demo_Res(6, 360, 240);
- Demo_Res(7, 360, 480);
- Page_Demo;
-
- asm
- mov ah,0
- mov al,3
- int 10h
- end;
- WriteLn('THIS MODE X DEMO IS FINISHED');
-
- END.