CCTweaks Lua

Modifications to ComputerCraft

This is a standalone version of CCTweaks that just contains modifications to the LuaVM and surrounding infrastructure.

• Download the latest release
• Add that and Guava to your class path
• Run java -cp cctweaks.jar:guava.jar org.squiddev.cctweaks.lua.launch.Launcher [actual main class and arguments...]

This will inject CCTweaks into the class loader, adding modifications.

• Custom computer timeout
• Whitelist globals (such as debug)
• Fix the binary strings (for fs, http, rednet and os.queueEvent)
• TCP socket API (socket)
• Compression API (data)
• LuaJC compiler (compiles Lua code to Java for performance boost)
• Cobalt VM (reentrant fork of LuaJ)
  • Custom termination handler
  • Several bugs fixed (any object error messages, string pattern matching, number format strings)
• Return HTTP handle on failures
• Allow getting headers from HTTP responses
• API for adding custom APIs

There is extensive documentation on the CCTweaks-Lua wiki.

Most tweaks are applied by default, though some can be configured through the command line:

• -Dcctweaks.Computer.luaJC=true: Enable LuaJC compilation (a luaJC flag also exists).
• -Dcctweaks.Computer.cobalt=true: Enable the Cobalt VM.
• -Dcctweaks.Computer.computerThreadTimeout=7000: Set the computer thread timeout. Time is measured in milliseconds.
• -Dcctweaks.Computer.timeoutError=true: Enable timeouts anywhere, rather than just from CC functions.
• -Dcctweaks.APIs.Socket.blacklist=127.0.0.0/8,10.0.0.0/8: Configure the socket blacklist (can also do whitelist).
• -Dcctweaks.APIs.debug=true: Enable the debug API.
• -Dcctweaks.APIs.profiler=true: Enable the profiler API.

This project is partly aimed at CCEmuRedux and so contains a custom launcher for CCEmuRedux.

• Place the jar in .ccemuredux/bin/
• Change directory to .ccemuredux
• Execute java -cp "bin/*" org.squiddev.cctweaks.lua.launch.CCEmuRedux

Several configuration options also exist:

• -Dcctweaks.ccemu.width=51: Manually set the width of all computers
• -Dcctweaks.ccemu.height=19: Manually set the height of all computers