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DUALDEMO.EXE
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SHOWDUAL.BAS
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BASIC Source File
|
1991-03-20
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2KB
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62 lines
' SHOWTYME
' by James Ducasse
' (modified for speed by Andrew Gariepy)
:
' This is an excellent example of using the high-speed
' USR 8 and USR 9 Integer SINE and COSINE functions
' built into all versions of the ZBasic compiler
:
IF CARDTYPE < 16 PRINT "Must have two monitors to do this" : DELAY 5000 : END
CLS : RANDOMIZE : Colormax = 16 : MODE 22
:
CR% = 7
V1 = 4
:
DO
LONG IF Colormax = 1
C1 = 1 : C2 = 1 : C3 = 1
XELSE
C1 = RND(Colormax-1) : C2 = RND(Colormax-1) : C3 = RND(Colormax-1)
END IF
LONG IF CARDTYPE > 31
MODE 20
X1 = RND(1024) : X2 = RND(768) : X3 = RND(768) : CIRCLE X1,X2,X3
XELSE
MODE 2 : PRINT @(0,0) "Color =" C1,C2,C3
END IF
MODE 19 : COLOR C1,C2,C3
FOR R = 0 TO 256
A% = USR 9 (Q * R) / 4
X1 = (USR 9 (R) * A%) / 50 + 512
Y1 = (USR 8 (R) * A%) / 50 + 384
B = R + E
B2% = USR 9 (V1 * B) / 4
X2 = (USR 9 (B) * B2%) / 50 + 512
Y2 = (USR 8 (B) * B2%) / 50 + 384
PLOT X1, Y1 TO X2, Y2
I$ = INKEY$
IF LEN(I$) THEN "END"
NEXT R
Q = RND(12)
IF Q = 7 THEN Q = 0
IF Q = 1 AND V1 = 0 THEN V1 = RND(12)
E = RND(200)
V1 = RND(12)
IF V1 = 7 THEN V1 = 0
IF V1 > 6 THEN V1 = V1 - 12
IF Q < 1 AND V1 = 1 THEN V1 = RND(50)
IF Q = 1 AND V1 = 1 THEN V1 = RND(100)
CR% = RND(17)
IF CR% = 2 THEN CR% = 4
IF CR% = 3 THEN CR% = 6
IF CR% > 6 AND C4% < 10 THEN CR% = CR% + 4
CR1% = CR% + 1
DELAY 2000
CLS
UNTIL LOOP ' LOOP = 0 so this is a never-ending loop
:
"END"
MODE 2
CLS
END