ECS Language ·

Entity Control Script interpreter with api for Convolvr.

Install

npm install --save convolvr-ecs

Transpile into your favorite language!

ecs -t js main.ecs > main.js
ecs -t java main.ecs > main.java
ecs -t c main.ecs > main.c

Install your favorite Un-Parser:

import { ECS } from 'convolvr-ecs';
import { Java } from 'convolvr-ecc';

const augmentedAST: ParseResult = ECS.parse("for(x, 1000) { print(x * x); }");
const javaCode: string = ECS.transpile(augmentedAST, Java)

CLI usage:

ecs some-file.ecs
ecs # to enter interactive mode
npm start -- program.ecs # to run without npm link(ing)

Use with an Entity-Component System:

Component c = Component(); /* current component */

c.addComponent(new Component({
 attrs: { 
      geometry: { shape: "box", size: [2,2,2]}, 
      material: { color: 255 }  
 } 
})); 

c.events().staticCollisions.hit(fn( hitTelemetry ){    
      c.actions().chat.send("Robot: Owch!");
      c.actions.movement.setVelocity([0, -1, 0]);
});

^^^ See "WebWorker usage", below for implementation details.

JS module usage:

import { ECS } from 'convolvr-ecs';

const vm = ECS.makeRuntimeEnvironment(), 
      env = vm.makeEnvironment();

vm.parseAndEvaluate(
      "print('hello')", 
      env, 
      (errs) => console.warn(errs)
)

WebWorker usage:

Send command to ECS Web Worker

Handle response from ECS Web Worker

Hacking the interpreter:

git clone [email protected]:convolvr/ecs.git
cd ecs && npm install && npm run-script build
# npm start to start interactive mode

For the server-side implementation, check out https://github.com/SpaceHexagon/ecs

TODO: finish writing this readme

class Salad {
 Salad: fn() { },
 private sauce: "ceaser",
 final lettuce: "iceberg",
 static toppings: ["bacon", "chicken", "parmesean"],
 describe: fn() {
  return this.sauce + ", " + join(this.toppings, ",") 
 },
 toss: fn() { 
   let toppings = this.toppings;
   this.toppings = [ toppings[1], toppings[2], toppings[0] ]; 
 }
}
let dinner = new Salad();

dinner.describe();
dinner.toss();

let colors = [" ", "`", ".", "'", ",", "-", "+", "/", "\", "=", "L", "H", " ", "#", "@"];
let size = terminal.getDimensions();
for (y, size[1]) {
 let s = "-";
 let idx = 0;
 for (x, size[0]-1) {
   if ((x/2 + y/2) % 10 <5) {
    idx = (x/1+y)%4;
   }
   if ((x/2 - y/2)% 10 <5) {
    idx = 2+(x*y) % 9;
   }
   s = s + colors[idx];
  }
  print(s);
 }

-..................................................................................................
-.',-+/\=L.''''''''' `-+/\=L.',--------- `/\=L.',-+///////// `=L.',-+/\========= `.',-+/\=L........
-.,+\L'-/=.,+++++++ `.'L'-/=.,+\LLLLLLL `.'-/=.,+\L'------- `.'=.,+\L'-/======= `.',+\L'-/=.,,,,,,,
-.-\.-\.-\.-\..... `.' `\.-\.-\.-\\\\\ `.' `-\.-\.-\.----- `.' `.-\.-\.-\..... `.' `\.-\.-\.-\\\\\
-.+L-=,\'/.+L-=== `.' `.'\'/.+L-=,\\\ `.' `.'/.+L-=,\'/// `.' `.'+L-=,\'/.+++ `.' `.'-=,\'/.+L--- `
-./'\,=-L+./'\,= `.' `.' `L+./'\,=-L `.' `.' `./'\,=-L+. `.' `.' `'\,=-L+./' `.' `.' `,=-L+./'\, `.
-.\-.\-.\-.\-.\-..' `.' ```-.\-.\-.\-.' `.' ```\-.\-.\-.\.' `.' ```.\-.\-.\-..' `.' ```-.\-.\-.\-.'
-.=/-'L\+,.=/-'L\+ `.' `````.=/-'L\+,. `.' `````/-'L\+,.=/ `.' `````'L\+,.=/-' `.' `````\+,.=/-'L\
-.L=\/+-,'.L=\/+-,'.' ```````L=\/+-,'.L.' ```````\/+-,'.L=\.' ```````+-,'.L=\/+.' ```````,'.L=\/+-,
-................... `````````.......... `````````.......... `````````.......... `````````.........
-.',-+/\=L.',-+/\=L.'''''''''''-+/\=L.',-----------/\=L.',-+///////////=L.',-+/\===========.',-+/\=
-.,+\L'-/=.,+\L'-/=.,+++++++++ `L'-/=.,+\LLLLLLLLL `-/=.,+\L'--------- `=.,+\L'-/========= `,+\L'-/
-.-\.-\.-\.-\.-\.-\.-\....... `.'\.-\.-\.-\\\\\\\ `.'-\.-\.-\.------- `.'.-\.-\.-\....... `.'\.-\.-
-.+L-=,\'/.+L-=,\'/.+L-===== `.' `\'/.+L-=,\\\\\ `.' `/.+L-=,\'///// `.' `+L-=,\'/.+++++ `.' `-=,\'
-./'\,=-L+./'\,=-L+./'\,=== `.' `.'L+./'\,=-LLL `.' `.'./'\,=-L+... `.' `.''\,=-L+./''' `.' `.',=-L
-.\-.\-.\-.\-.\-.\-.\-.\-. `.' `.' `-.\-.\-.\- `.' `.' `\-.\-.\-.\ `.' `.' `.\-.\-.\-. `.' `.' `-.\
-.=/-'L\+,.=/-'L\+,.=/-'L\+.' `.' ```.=/-'L\+,..' `.' ```/-'L\+,.=/.' `.' ```'L\+,.=/-'.' `.' ```\+
-.L=\/+-,'.L=\/+-,'.L=\/+-,' `.' `````L=\/+-,'.L `.' `````\/+-,'.L=\ `.' `````+-,'.L=\/+ `.' `````,
-.............................' ```````...........' ```````...........' ```````...........' ```````
-.',-+/\=L.',-+/\=L.',-+/\=L.' `````````-+/\=L.',- `````````/\=L.',-+/ `````````=L.',-+/\= ````````
-.,+\L'-/=.,+\L'-/=.,+\L'-/=.,+++++++++++L'-/=.,+\LLLLLLLLLLL-/=.,+\L'-----------=.,+\L'-/=========
-.-\.-\.-\.-\.-\.-\.-\.-\.-\.-\......... `\.-\.-\.-\\\\\\\\\ `-\.-\.-\.--------- `.-\.-\.-\........
-.+L-=,\'/.+L-=,\'/.+L-=,\'/.+L-======= `.'\'/.+L-=,\\\\\\\ `.'/.+L-=,\'/////// `.'+L-=,\'/.+++++++
-./'\,=-L+./'\,=-L+./'\,=-L+./'\,===== `.' `L+./'\,=-LLLLL `.' `./'\,=-L+..... `.' `'\,=-L+./'''''
-.\-.\-.\-.\-.\-.\-.\-.\-.\-.\-.\-... `.' `.'-.\-.\-.\--- `.' `.'\-.\-.\-.\\\ `.' `.'.\-.\-.\-... `
-.=/-'L\+,.=/-'L\+,.=/-'L\+,.=/-'L\+ `.' `.' `.=/-'L\+,. `.' `.' `/-'L\+,.=/ `.' `.' `'L\+,.=/-' `.
-.L=\/+-,'.L=\/+-,'.L=\/+-,'.L=\/+-,'.' `.' ```L=\/+-,'.L.' `.' ```\/+-,'.L=\.' `.' ```+-,'.L=\/+.'
-..................................... `.' `````.......... `.' `````.......... `.' `````..........

Fractal example: https://tinyurl.com/y228w9qm

const colors = split('.,.,.,-,-,_,+,+,/,=,L,7,H,%,#,@', ',');
for(x, 120) {
 string out = "";
 for(y, 200) {
		int i=0;
		float cx=-2+x/50;
		float cy=-2+y/150;
		float zx=0;
		float zy=0;
		while(i<255&&(zx*zx-zy*zy)<4){
 	float xt=zx*zy;
		 	zx=zx*zx+zy*zy+cx;
			zy=2*xt+cy;
			i = i + 1;
		}
		out = out + colors[i%12];
 }
 print(out);
}