mirror of
https://github.com/bradgrantham/apple2e.git
synced 2024-11-05 12:05:20 +00:00
a9f5b9f18a
Try COLORBOUNCESOUND.A.
39 lines
1.7 KiB
Plaintext
39 lines
1.7 KiB
Plaintext
60 Y = 5: REM SET STARTING POSITION OF UP-AND-DOWN VARIABLE
|
|
240 REM SET S TO ADDRESS OF SPEAKER
|
|
260 S = - 16336
|
|
280 REM SET TEXT MODE
|
|
300 TEXT : HOME
|
|
310 PRINT "TO SELECT A COLOR FOR"
|
|
320 PRINT "THE BOUNCING BALL, FIRST TYPE"
|
|
330 PRINT "IN ANY NUMBER FROM 1 TO 15."
|
|
340 PRINT "THEN PRESS THE KEY LABELLED RETURN.": PRINT
|
|
350 INPUT "WHAT COLOR WOULD YOU LIKE THE BALL TO BE (1-15)?";HUE$
|
|
352 REM IS ENTRY A NUMBER?
|
|
354 HUE = VAL (HUE$): REM VALUE OF HUE$ BECOMES NUMERIC VARIABLE
|
|
356 IF HUE > 999999 OR HUE < .01 THEN GOTO 300: REM INPUT MESSAGE WILL REAPPEAR
|
|
358 HUE$ = STR$ (HUE): REM HUE CHANGED BACK INTO STRING HUE$
|
|
370 REM IS HUE OF BALL IN RANGE?
|
|
380 IF HUE > 0 AND HUE < 16 THEN 400
|
|
390 HOME : PRINT "THAT WASN'T BETWEEN 1 AND 15!": PRINT
|
|
395 GOTO 310
|
|
400 GR : REM SET COLOR GRAPHICS AREA
|
|
420 HOME : REM CLEAR TEXT AREA
|
|
440 X = 0: REM SET STARTING POSITION OF BACK-AND-FORTH VARIABLE
|
|
460 Y = 5: REM SET STARTING POSITION OF UP-AND-DOWN VARIABLE
|
|
480 XV = 2: REM SET X VELOCITY
|
|
500 YV = 1: REM SET Y VELOCITY
|
|
520 REM CALCULATE NEW POSITION
|
|
540 NX = X + XV:NY = Y + YV
|
|
560 REM IF BALL EXCEEDS SCREEN EDGE, THEN BOUNCE
|
|
580 IF NX > 39 THEN NX = 39:XV = - XV: FOR B = 1 TO 5:BOUNCE = PEEK (S) + PEEK (S) + PEEK (S): NEXT B
|
|
600 IF NX < 0 THEN NX = 0:XV = - XV: FOR B = 1 TO 5:BOUNCE = PEEK (S) + PEEK (S) + PEEK (S): NEXT B
|
|
620 IF NY > 39 THEN NY = 39:YV = - YV: FOR B = 1 TO 5:BOUNCE = PEEK ( S) + PEEK (S) + PEEK (S): NEXT B
|
|
640 IF NY < 0 THEN NY = 0:YV = - YV: FOR B = 1 TO 5:BOUNCE = PEEK (S) + PEEK (S) + PEEK (S): NEXT B
|
|
660 REM PLOT NEW POSITION
|
|
680 COLOR= HUE: PLOT NX,NY
|
|
700 REM ERASE OLD POSITION
|
|
720 COLOR= 0: PLOT X,Y
|
|
740 REM SAVE CURRENT POSITION
|
|
760 X = NX:Y = NY
|
|
780 GOTO 540
|