Apple IIe - Page 231

Apple lie Graphics 231
it, by adding the following lines to the program.
260 PRINT "COLLISION"
270 FOR J = 1 TO 12
280 PRINT CHR$(7);:NEXT J
290 INPUT A$
300 GOTO 10
The PRINT statement in line 280 activates the consol speaker.
Line
290 delay's a new game from starting until return has been
pressed.
A BARACADE's score can be easily
kept track of by merely incre-
menting a variable each time a move has been completed .
130 I= 0
230 I= I+ 1
240 HOME: PRINT I
A
final technicality remains - creation of a playing field. A
square
field with scattered barriers was chosen.
20
COLOR =9
30
VLIN 0, 39 AT 0
40 VLIN 0,39 AT 39
50
HLIN 0,39 AT 0
60 HLIN 0, 39 AT 39
Line 20 sets the playfield color to orange (9). Lines 30-60 draw a
square
border around the field.
70 FORK= 1TO6
80 GOSUB 310
90 HLINL , L+SATM
100 GOSUB 310
110 VLIN L,L + 5 ATM
120 NEXT K
The
previous addition to the program draws randomly located
barriers
around the playfield. The subroutine at 310 must pro-