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Text File
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1997-02-12
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4KB
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128 lines
LLLL ddd ddd
LL dd dd
LL aaaa dd dd dd dd eeee rrr rr
LL aa dd ddd dd ddd ee ee rrr rr
LL L aaaa dd dd dd dd eeeeee rr rr
LL LL aa aa dd dd dd dd ee rr
LLLLLLL aaa aa ddd dd ddd dd eeee rrrr Amiga V1.1
Written 1991 by
Tom van der Meijden
Rewritten 1996 by
Gunther Nikl
INTRODUCTION
This is an (about 98% accurate) conversion of the old CP/M Ladder game.
It was written from scratch with the screen layout copied by counting
the chars on a NCR DecisionMate V.
LEGAL
Ladder is Copyright © 1991/96 by Tom van der Meijden and Gunther Nikl.
All Rights Reserved.
Distribution of this software requires the permission of the author.
Permission granted to include on the meeting pearls CD-ROM series.
PREFACE
I liked the original game version from Tom van der Meijden. It seemed
to be well written and had no problems with OS3.0, AGA and a 68030. It
even worked flawlessly with its screen promoted to any other screenmode
than PAL or NTSC. Unfortunately it failed to operate on a graphic card!
The problem was that Ladder wrote its graphics data directly into the
bitplanes. Having not much expirience with such stuff I would guess it
was a speed issue with the old chipset and the 68000. Then I had to much
spare time and finally succeed to rewrite the game. Now it uses a system
function to draw into the screens bitmap. Therefore it should work on
graphic cards, at least I hope so :-)
FEATURES
- Amiga, CP/M, old, multitasking, game, fun
- should run on any amiga w/o a graphic card
- needs at least 1.2 of the operating system
- comes with a level editor (only native gfx)
INSTALLATION
Installing Ladder is fairly easy. Copy the whole game directory to a
location on your harddisk. Thats all :-)
The program doesn't require any additional assign.
USAGE
Ladder can be started either from CLI/Shell or Workbench. To start Ladder
from the Workbench doubleclick on its icon. To start Ladder from the shell
simply type:
1> Ladder
followed by a return.
Ladder can be started with a name for an external level file. If no
argument is given Ladder will use the internal levels.
A level filename can specified from workbench too. Here one has to supply
the tooltype LEVEL with the name for the level file to use.
NOTE: This feature has been disabled because it could easily crash the
computer! The problem is that one cannot really check whether one
loads a valid level file or not. Anyway I never needed this feature
but its still there.
GAMEPLAY
There are 7 levels, played in this sequence:
1, 12, 123, 1234, 12345, 123456, 1234567
If you successful complete this sequence the game starts all over, only
faster this time (of course only if the difficulty can be raised).
The game is controlled over the keyboard:
Space = jump, use cursor-keys or num-keypad 2,4,6,8 to move around.
Ctrl-c = return from game play to main menu
Escape = (a=abort,c=continue)
|
Tip: You can 'stand still' on top of a wall | just jump on it and hit
any key (other than space or cursor-keys).
The game writes a high-score file to the current directory. This is only
done if the highscore has actually changed.
HISTORY
1.1 - removed direct bitplane write -> should work with gfx cards now
- now uses timer.device for delays (not quite accurate though :-/
- nearly all functions rewritten
- does proper cleanup now
- source included
1.0 - initial release
AUTHOR
Ladder was rewritten, (bug-)fixed and enhanced by Gunther Nikl.
email: gnikl@informatik.uni-rostock.de (will expire soon :()
snail: Gunther Nikl
Ziegendorfer Chaussee 96
Parchim
19370
GERMANY
The original program was written by Tom van der Meijden:
email: tvdmeyde@nediss.netherlands.ncr.com
or
tmp@phaedrus.hacktic.nl
I tried to contact but the above addresses seems no longer be valid.