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ansi.bas
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BASIC Source File
|
1991-03-31
|
6KB
|
190 lines
' +----------------------------------------------------------------------+
' | |
' | BASWIZ Copyright (c) 1990-1991 Thomas G. Hanlin III |
' | |
' | The BASIC Wizard's Library |
' | |
' +----------------------------------------------------------------------+
' This is a subroutine to display to a window which handles ANSI display
' codes. Put it directly in your program or use REM $INCLUDE: 'ANSI.BAS'
' to include it. The variable Win% should be set to the window handle; the
' virtual screen corresponding to the window must be at least 80 columns by
' 25 rows. Set St$ to the string to display, then GOSUB ANSIprint to handle
' it. Use Music% = 0 for no sound, or Music% = -1 to allow music through.
' If using music, you are advised to have an ON ERROR handler in case a
' defective music command slips through.
END ' for safety's sake
ANSIprint:
FOR disp0% = 1 TO LEN(St$)
ch0$ = MID$(St$, disp0%, 1)
GOSUB AP0
NEXT
WUpdate
RETURN
AP0:
IF ANSIcode0% THEN
IF LEFT$(ANSIst0$, 2) = "[M" THEN
IF ASC(ch0$) = 14 THEN
IF Music% THEN PLAY "MB" + MID$(ANSIst0$, 4)
ANSIst0$ = ""
ANSIcode0% = 0
ELSE
ANSIst0$ = ANSIst0$ + ch0$
END IF
ELSEIF INSTR("ABCDEFGHIJKLMNOPQRSTUVWXYZ", UCASE$(ch0$)) THEN
SELECT CASE ch0$
CASE "A": GOSUB CursorUp0
CASE "B": GOSUB CursorDown0
CASE "C": GOSUB CursorRight0
CASE "D": GOSUB CursorLeft0
CASE "H", "f": GOSUB CursorLocate0
CASE "s": GOSUB SaveCursorPosn0
CASE "u": GOSUB RestCursorPosn0
CASE "J": GOSUB BigErase0
CASE "K": GOSUB SmallErase0
CASE "h", "l": REM set display mode... ignored
CASE "m": GOSUB SetColors0
CASE ELSE
WWrite Win%, ANSIst0$
ANSIcode0% = 0
ANSIst0$ = ""
END SELECT
ANSIst0$ = ""
ANSIcode0% = 0
ELSEIF ASC(ch0$) <= 32 OR LEN(ANSIst0$) > 60 THEN
WWrite Win%, ANSIst0$
ANSIcode0% = 0
ANSIst0$ = ""
ELSE
ANSIst0$ = ANSIst0$ + ch0$
END IF
ELSEIF ASC(ch0$) = 27 THEN
ANSIcode0% = -1
ANSIst0$ = ""
ELSE
WWrite Win%, ch0$
END IF
RETURN
CursorUp0:
Tmp0% = VAL(MID$(ANSIst0$, 2))
IF Tmp0% < 1 THEN Tmp0% = 1
WGetLocate Win%, Row0%, Col0%
Row0% = Row0% - Tmp0%
IF Row0% < 1 THEN Row0% = 1
WLocate Win%, Row0%, Col0%
RETURN
CursorDown0:
Tmp0% = VAL(MID$(ANSIst0$, 2))
IF Tmp0% < 1 THEN Tmp0% = 1
WGetLocate Win%, Row0%, Col0%
Row0% = Row0% + Tmp0%
IF Row0% > 25 THEN Row0% = 25
WLocate Win%, Row0%, Col0%
RETURN
CursorLeft0:
Tmp0% = VAL(MID$(ANSIst0$, 2))
IF Tmp0% < 1 THEN Tmp0% = 1
WGetLocate Win%, Row0%, Col0%
Col0% = Col0% - Tmp0%
IF Col0% < 1 THEN Col0% = 1
WLocate Win%, Row0%, Col0%
RETURN
CursorRight0:
Tmp0% = VAL(MID$(ANSIst0$, 2))
IF Tmp0% < 1 THEN Tmp0% = 1
WGetLocate Win%, Row0%, Col0%
Col0% = Col0% + Tmp0%
IF Col0% > 80 THEN Col0% = 80
WLocate Win%, Row0%, Col0%
RETURN
CursorLocate0:
Row0% = VAL(MID$(ANSIst0$, 2))
Tmp0% = INSTR(ANSIst0$, ";")
IF Tmp0% THEN
Col0% = VAL(MID$(ANSIst0$, Tmp0% + 1))
ELSE
Col0% = 1
END IF
IF Row0% < 1 THEN
Row0% = 1
ELSEIF Row0% > 25 THEN
Row0% = 25
END IF
IF Col0% < 1 THEN
Col0% = 1
ELSEIF Col0% > 80 THEN
Col0% = 80
END IF
WLocate Win%, Row0%, Col0%
RETURN
SaveCursorPosn0:
WGetLocate Win%, SaveRow0%, SaveCol0%
RETURN
RestCursorPosn0:
IF SaveRow0% > 0 THEN
WLocate Win%, SaveRow0%, SaveCol0%
END IF
RETURN
BigErase0:
WClear Win%
WLocate Win%, 1, 1
RETURN
SmallErase0:
WGetLocate Win%, Row0%, Col0%
WWrite Win%, SPACE$(80 - Col0%)
WLocate Win%, Row0%, Col0%
RETURN
SetColors0:
ANSIst0$ = MID$(ANSIst0$, 2)
WGetColor Win%, Fore0%, Back0%
DO WHILE LEN(ANSIst0$)
Tmp0% = VAL(ANSIst0$)
SELECT CASE Tmp0%
CASE 0: Fore0% = 7: Back0% = 0 ' reset colors
CASE 1: Fore0% = (Fore0% OR 8) ' high intensity
CASE 2: Fore0% = (Fore0% AND &H17) ' normal intensity
CASE 5: Fore0% = (Fore0% OR 16) ' blink
CASE 7: Fore0% = 0: Back0% = 7 ' reverse video
CASE 8: Fore0% = 0: Back0% = 0 ' invisible
CASE 30: Fore0% = (Fore0% AND &H18) ' black foreground
CASE 31: Fore0% = (Fore0% AND &H18) OR 4 ' red foreground
CASE 32: Fore0% = (Fore0% AND &H18) OR 2 ' green foreground
CASE 33: Fore0% = (Fore0% AND &H18) OR 6 ' yellow foreground
CASE 34: Fore0% = (Fore0% AND &H18) OR 1 ' blue foreground
CASE 35: Fore0% = (Fore0% AND &H18) OR 5 ' magenta foreground
CASE 36: Fore0% = (Fore0% AND &H18) OR 3 ' cyan foreground
CASE 37: Fore0% = (Fore0% OR 7) ' white foreground
CASE 40: Back0% = 0 ' black background
CASE 41: Back0% = 4 ' red background
CASE 42: Back0% = 2 ' green background
CASE 44: Back0% = 6 ' yellow background
CASE 44: Back0% = 1 ' blue background
CASE 45: Back0% = 5 ' magenta background
CASE 46: Back0% = 3 ' cyan background
CASE 47: Back0% = 7 ' white background
CASE ELSE ' ignore anything weird
END SELECT
Tmp0% = INSTR(ANSIst0$, ";")
IF Tmp0% THEN
ANSIst0$ = MID$(ANSIst0$, Tmp0% + 1)
ELSE
ANSIst0$ = ""
END IF
LOOP
WColor Win%, Fore0%, Back0%
RETURN