More components!

[zac-garby]

Implement any components you want, really. If they work, I'll probably accept a PR :)

[more-coffee-more-code]

I would like to contribute :)

[zac-garby]

Cool :)

[pszczolas]

Hello, I wanted to implement xor gate, but i have a problem.
If I just dont understand some concept of your app, please explain me them.
I patterned my solution on OrGate and AndGate. As far as i know imputs of each gate are taken from top and bottom square. But the state of wire is not read correctly. I added console log for debugging, please see example below:

export default class XorGate extends Component {
   constructor(x, y, options={}) {
     super(x, y, {
       char: '⊕',
       name: 'xor',
       category: 'control',
       conductDirections: [Direction.LEFT, Direction.RIGHT],
       receiveDirections: [Direction.UP, Direction.DOWN]
     });
   }
 
   simulate(from, board) {
     const downState = this.board.get(this.x, this.y + 1).on;
     const upState = this.board.get(this.x, this.y - 1).on;
     const condition = (this.board.get(this.x, this.y + 1).on ^
     this.board.get(this.x, this.y - 1).on) === 1;
     console.log('up: ' + upState + ' XOR down: ' + downState + ' = ' + condition);
     if (condition) {
       super.simulate(from, board);
     }
   }
}

So, i log to console two imputs and result of xor operation, but the output is unexpected:
The top input is false, but it is actualy true (It is green, isnt it?).

[zac-garby]

I haven't looked at this project for a long time now, but I seem to remember the implementations for logic gates being a bit hacky.

One thing I've noticed in your code is your use of the ^ operator, which I'm pretty sure is actually a numeric operator (i.e. 0b1010 ^ 0b0110 == 0b1100), so that might be a problem.

Not that it would be a problem, but I also noticed you define downState and upState, only to not use them when you compute the condition on the next line.

Here's what you might want to try (untested)

const down = this.board.get(this.x, this.y + 1).on;
const up = this.board.get(this.x, this.y + 1).on;

if ((up || down) && !(up && down)) {
    super.simulate(from, board);
}

EDIT: @pszczolas - forgot to mention you