The Museum of HP Calculators
The Museum of HP Calculators
This program was first published in the HP-41C Users' Library Solutions: Games by Hewlett-Packard and is used here by permission.
This program is supplied without representation or warranty of any kind. Hewlett-Packard Company and The Museum of HP Calculators therefore assume no responsibility and shall have no liability, consequential or otherwise, of any kind arising from the use of this program material or any part thereof.
You move your android to any adjacent square on a 10 x 10 playing board studded with destructive force fields and up to 49 enemy robots in such a way as to lure the robots into their own electronic booby traps and save the android. The robots will always close on the android, moving to the square adjacent to their present position which is nearer to the row and column position of the android, and will team up to destroy him. The android, like the robots, is destroyed by moving into a force field, and the android is also destroyed by colliding with a robot. If robots collide all but one involved are destroyed. You choose the initial number of robots. The number of force fields is equal to the initial number of robots plus one. Even a few robots can be challenging and the more robots the more difficult. All initial positions are randomly generated.
If you move the android into a force field you will see "ZAP" then "TOO BAD". If you move the android into a robot you will see "STOMP" then "TOO BAD". If a robot stumbles into a force field you will see "STUMBLE". And, if robots hit, you will see "BUMP". Finally, if all robots are destroyed, you will see "YOU WIN".
The board is set up as below:
Board positions are denoted as x.y . The android shown is at 7,2. To move the android use the digits keys to specify directions as follows:
1 - down and left 6 - right
2 - down 7 - up and left
3 - down and right 8 - up
4 - left 9 - up and right
5 - no movement
Note: Do not move off the board. Execution times at all points in the program increase with the initial number of robots.
Note: Requires 1 Memory Module on HP-41C
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Step |
Instructions |
Input Data/Units |
Keys |
Output Data/Units |
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1 |
Enter program |
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2 |
Initialize |
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[XEQ] RT |
SEED? |
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3 |
Key in number between 0 and 1 |
seed |
[R/S] |
NO.OF ROBOTS |
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4 |
Key in the number of robots you wish. |
num |
[R/S] |
SET SIZE(NNN) |
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5 |
Set size specified. |
[XEQ] SIZE(NNN) [R/S] |
F.F. AT ()* |
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| (If size was already set at or above specified, the program will skip that prompt.) |
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6 |
Continue pressing [R/S] to see the rest of the force field and robot Placements until the android placement appears. |
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[R/S]. . . |
. . . |
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[R/S] |
ANDROID: () |
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7 |
Move the android (only when "ANDROID: ( )" is in display. |
direction |
[R/S] |
ROBOT AT () |
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8 |
Go to 6 to see the rest of the robot placements and new android placement. |
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9 |
For a new game |
[E] |
NO.OF ROBOTS |
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10 |
Go to step 4. |
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* |
Force field placements are only output at the beginning of the game. |
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Keystrokes: Display:
[XEQ] [ALPHA]
SIZE [ALPHA] 014
[XEQ] [ALPHA]
RT [ALPHA] SEED?
.12569 [R/S] NO. OF ROBOTS
3 [R/S] F.F. AT 7,8
[R/S] F.F. AT 7,1
[R/S] F.F. AT 3,6
[R/S] F.F. AT 3,3
[R/S] ROBOT AT 6,8
[R/S] ROBOT AT 0,6
[R/S] ROBOT AT 7,9
[R/S] ANDROID: 6,1
3 [R/S] STUMBLE
ROBOT AT 7,7
[R/S] ROBOT AT 1,5
[R/S] ANDROID: 7,0
4 [R/S] ROBOT AT 6,6
[R/S] ROBOT AT 2,4
[R/S ] ANDROID: 6,0
. .
. .
. .
LINE KEYS 01LBL "RT" 02 SF 27 Initialize 03 "SEED?" 04 PROMPT 05 STO 00 06
AT " 105 ARCL X 106 AVIEW 107 STOP 108
R00 Seed
R01 Used
R02 Used
R03 Used
R04 Used
R05 Used
R06 Android
R07 Robot1
... ...
Robotn
FF1
...
FFn+1
05 Used 06 Robot/FF
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