Qt and script system

Question

there are a nice binding of script system for Qt, which uses javascript. With metaobjects built in qt it gives a big power for a programmer.

I'm rewriting game from another libraries with using Qt. Now I want to replace python script system with something faster. I dunno whether built-in Qt scripts are quite fast for my purposes? Or QLua would be better choise for my case?

Any numbers/statistic is appreciated, thanks.

Why do you want scripting support? If you're writing a game surely performance is critical, so why not stick to C++ - the libraries native language. — cmannett85
– cmannett85, Commented Sep 21, 2011 at 16:05
@cbamber85 In game development there is a plenty places where object logic code are more like configuration. I have bad times migrating from python to JS, and mostly it was easier to put that code to C++. Also QML is very usefull and it is built over JS. However having more than one scripting languge is very confusing and that's why we decided to put python away. — Arpegius
– Arpegius, Commented Nov 15, 2011 at 22:32

Silas Parker · Accepted Answer · 2011-11-15 21:39:24Z

1

This article on QtScript in 4.6 discusses the improvements in performance in QtScript in 4.6 over 4.5, it states:

Qt 4.6′s QtScript implementation is based on WebKit’s JavaScript engine, JavaScriptCore (you might’ve also heard it being referred to as “SquirrelFish” or “SquirrelFish Extreme”).

Another article discusses the technologies in SquirrelFish Extreme, which include:

Bytecode Optimizations
Polymorphic Inline Cache
Context Threaded JIT
Regular Expression JIT

If you need full native code performance, but want to allow the system to be extended, you may want to look into How to Create Qt Plugins, you could even use the Qt plugin system to write plugins that run JavaScript, Lua or Python to extend the system.

answered Nov 15, 2011 at 21:39

Silas Parker

8,1771 gold badge32 silver badges44 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Qt and script system

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related