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udpate space-invaders readme

release
chris.double 2006-03-29 11:08:17 +00:00
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contrib/space-invaders/readme.txt
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@ -1,19 +1,18 @@
This is a first cut at a simple space invaders emulator. The goal is This is a simple space invaders emulator. The goal is to produce an
to produce an emulator, disassembler and assembler for the 8080 emulator, disassembler and assembler for the 8080 processor.
processor.
Running 'load.factor' will load all necessary files to run the game. Running 'load.factor' will load all necessary files to run the game.
If you are in the space-invaders directory, and have the ROM as a file If you are in the factor root directory, and have the ROM as a file
'invaders.rom' in that same directory, the following starts the GUI: 'invaders.rom' in that same directory, the following starts the GUI:
"load.factor" run-file "contrib/space-invaders/load.factor" run-file
USE: space-invaders USE: space-invaders
run run
'Backspace' inserts a coin, '1' is the one player button and '2' is 'Backspace' inserts a coin, '1' is the one player button and '2' is
the two play button. The left and right arrow keys move and the left the two play button. The left and right arrow keys move and the up
control key fires. arrow key fires.
If the ROM file you have is split into seperate files, you will need If the ROM file you have is split into seperate files, you will need
to merge them into one 'invaders.rom' file. From Windows this is done to merge them into one 'invaders.rom' file. From Windows this is done
@ -31,6 +30,24 @@ space-invaders.factor. It specializes generic functions defined by the
8080 emulator code to handle the space invaders display and 8080 emulator code to handle the space invaders display and
input/output ports. input/output ports.
Current Issues:
1) The Factor GUI doesn't seperate key events into 'up' and 'down'
events. Space Invaders requires this so we fake the up event. This
causes a delay when pressing keys which makes the game hard to play.
2) The Escape key does not close the GUI. It does stop the CPU
emulation process though.
3) Closing the GUI using the 'X' does not stop the CPU emulation
process. This needs to be stopped by sending "stop" to the process
returned from 'run':
USE: concurency
"stop" swap send
4) The best way of closing the window is by pressing Escape and then
'X' on the window.
For more information, contact the author, Chris Double, at For more information, contact the author, Chris Double, at
chris.double@double.co.nz or from my weblog chris.double@double.co.nz or from my weblog
http://www.bluishcoder.co.nz http://www.bluishcoder.co.nz