DNA.js

class DNA {
    
    constructor(genes) {
        if(genes) {
            this.genes = genes;
        } else {
            this.genes = [];
            for (var i = 0; i < lifespan; i++) {
                this.genes[i] = p5.Vector.random2D();
                this.genes[i].setMag(0.1);
            }
        }
    }

    crossover(partner) {
        let newgenes = [];
        let mid = floor(random(this.genes.length));
        for(let i=0;i<this.genes.length;i++) {
            if(i < mid) newgenes[i] = this.genes[i];
            else newgenes[i] = partner.genes[i];
        }

        return new DNA(newgenes);
    }

    mutation() {
        for(let i=0;i<this.genes.length;i++) {
            if(random(1) < 0.005) {
                this.genes[i] = p5.Vector.random2D();
                this.genes[i].setMag(0.1);
            }
        }
    }

}