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| Squirrel | |
|---|---|
| Paradigm | Multi-paradigm:scripting,imperative,functional,object-oriented |
| Designed by | Alberto Demichelis |
| First appeared | September 6, 2003; 21 years ago (2003-09-06) |
| 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 levelimperative,object-orientedprogramming language, designed to be alightweightscripting language that fits in the size, memory bandwidth, and real-time requirements of applications likevideo 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 byCode::Blocks for scripting and was also used inFinal Fantasy Crystal Chronicles: My Life as a King.[3][4] It is also used inLeft 4 Dead 2,Portal 2 andThimbleweed Park for scripted events and inNewDark, an unofficialThief 2: The Metal Age engine update, to facilitate additional, simplified means of scripting mission events, aside of the regularC 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 thezlib/libpng license.[22]In November 2010, the license was changed to theMIT license to enable the project to be hosted onGoogle Code.[23][24]It is developed and maintained by Alberto Demichelis.
