Download e-book for iPad: Adventures with the Atari by Jack B. Hardy

By Jack B. Hardy

ISBN-10: 0835901726

ISBN-13: 9780835901727

A booklet approximately writing event video games in 3 diversified programming languages: Pilot, Microsoft uncomplicated, and Atari 8K easy

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Add some more locations: 580 590 610 620 630 660 670 680 690 700 720 tLOCATION8 C:#W=10 C:#N=7 C: $AREA=ON A HILL OVERLOOKING THE OCEAN C:SITEM=A SHOVEL J:tPRINT tLOCATION9 C:#U=8 C:SAREA=IN THE BOTTOM OF A HOLE C:SITEM=A WOODEN CHEST J:tPRINT and a way to get to them: 3120 M:ON8 ,ON9 , 3130 JM:tLOCATION8,tLOCATION9 Note: Location 9 is in the bottom of a hole and there is no way to get to it. Therefore, the command *DIG needs to be added to the program's growing vocabulary. Change line 1770 and 1780 as shown: 1770 M:TAKE,SET,READ,DIS 1780 JM:tTAKE,tTAKE,tREAD,tDIS Also needed is a way to take the shovel.

In the process of entering it, you have had the fun of watching it grow, segment by segment, into its final form. Type LIST, hit RETURN. As you can see, all of the line numbers are now in order. If you would like to clean up the listing and have the program lines incremented by ten, then type REN 10,10 and hit RETURN. List the program again and be sure to save a copy of all work onto cassette (CSAVE ) or disk (SAVE "D:filename" ). AN ADVENTURE IN ATARI - - - - - - - - - - - - - - - - . MICROSOFT BASIC: HALLS OF DEATH ~______________ 37 38 INTERACTIVE ADVENTURES Halls of Death is written in Atari Microsoft BASIC, a full implementation of the standard BASIC used on the Apple, the Pet, the TRS-80, and many other popular microcomputers.

If not. it will jump to "can't read" routine, which sounds the bell, displays the message, and jumps again to the oft-used CLEARBOTTOM routine: 28 INTERACTIVE ADVENTURES 2870 *CANTREAD 2880 T:[esc ctrl 2 / 2 spaces]THERE IS NOTHING HERE TO READ~ 2890 J:*CLEARBOTTOM The information on the note can be read only once, as the program sets the #B status variable to two, prints the message, and jumps to the reset routine: 2430 2440 2450 2455 2460 2470 2480 2490 2500 *MESSAGE1 U:*OK C:#B=2 T:[2 esc ctrl -'s] T: FIND A BOAT T: SAIL IT WEST T: THERE'S A TREASURE THERE T: ONE OF THE BEST J:*RESET The reset routine pauses so the message can be read, repositions the cursor, and jumps to the CLEARBOTTOM routine: 3180 3190 3200 3210 *RESET PA:240 T:[3 esc ctrl -'s] J:*CLEARBOTTOM What if the player wanted to read the note again?

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Adventures with the Atari by Jack B. Hardy


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