{ 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.
