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Paradigm | Multi-paradigm: scripting, imperative, functional, object-oriented |
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Designed by | Alberto Demichelis |
First appeared | September 6, 2003 |
Stable release | |
Typing discipline | Dynamic |
OS | Cross-platform |
License | MIT license |
Filename extensions | .nut |
Website | squirrel-lang |
Influenced by | |
C++, JavaScript, Lua, Python | |
Influenced | |
MiniD |
Squirrel is a high level imperative, object-oriented programming language, designed to be a lightweight scripting language that fits in the size, memory bandwidth, and real-time requirements of applications like video games.
MirthKit, a simple toolkit for making and distributing open source, cross-platform 2D games, uses Squirrel for its platform. [2] It is used extensively by Code::Blocks for scripting and was also used in Final Fantasy Crystal Chronicles: My Life as a King . [3] [4] It is also used in Left 4 Dead 2 , Portal 2 and Thimbleweed Park for scripted events and in NewDark, an unofficial Thief 2: The Metal Age engine update, to facilitate additional, simplified means of scripting mission events, aside of the regular C scripting. [5]
Squirrel uses a C-like syntax, albeit inspired by that of Lua as well.
localfunctionfactorial(x)// Getting function which is factorial, then getting value which is x{if(x<=1){// if x is less than 1return1;// then the code will just return 1}else{// if that doesn't workreturnx*factorial(x-1);// then the code will return x times factorial(x-1)}}
functionnot_a_random_number_generator(max){locallast=42;localIM=139968;localIA=3877;localIC=29573;for(;;){// loops foreveryield(max*(last=(last*IA+IC)%IM)/IM);}}localrandtor=not_a_random_number_generator(100);for(locali=0;i<10;i+=1)print(">"+resumerandtor+"\n");
classBaseVector{constructor(...){if(vargv.len()>=3){x=vargv[0];y=vargv[1];z=vargv[2];}}x=0;y=0;z=0;}classVector3extendsBaseVector{function_add(other){if(otherinstanceof::Vector3)return::Vector3(x+other.x,y+other.y,z+other.z);elsethrow"wrong parameter";}functionPrint(){::print(x+","+y+","+z+"\n");}}localv0=Vector3(1,2,3)localv1=Vector3(11,12,13)localv2=v0+v1;v2.Print();
The language was made public in 2003 under the zlib/libpng license. [23] In November 2010, the license was changed to the MIT license to enable the project to be hosted on Google Code. [24] [25] It is developed and maintained by Alberto Demichelis.