WebEvolution/index.html at master · Renderhaf/WebEvolution · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Evolution Simulator</title>
  </head>
  <body align="center">
    <script src="EvolutionPlayer.js"></script>

    <!-- Main canvas -->
    <canvas
      id="can"
      width="850"
      height="500"
      style="border: 1px solid black"
    ></canvas>

    <!-- Fitness Chart -->
    <div class="chart-container" style="display: inline-block; border: 1px solid black">
        <canvas id="chartCan" width="500" height="500"></canvas>
    </div>
    <script src="drawChart.js"></script>
    <br/>
    <p id="tickcounter" style="font-size: 1.5em; display: inline;"></p>
    <p style="font-size: 1.5em; display: inline;" id="gencounter"> | Gen 0 | Avg Fitness = -1 | Mutation Rate = -1 | Success Rate = -1</p>

    <div id="startdiv">
      <input onmousemove="changePlayerLable(this)" type="range" id="playerrange" min="1" max="500" value="100"/><label id="playerrangelable" style="font-size: 1.5em; display: inline;"> 100 Players</label>
      <input type="button" onclick="startSim()" value="START">
      <input type="button" onclick="addWall()" value="Add Wall">
      <input type="text" placeholder="Genlen" value="240" id="genlen" size="1">
    </div>

    <div id="simControlGroup" style="visibility: hidden">
      <span>KEEP </span><input type="checkbox" onchange="changeKeepState(this.checked)">
      <input type="button" onclick="resetSim()" value="RESET" style="margin-top: 0.25vh;">
      <input type="range" value="30" min="1" max="750" onchange="changeSpeed(this.value)"/>
      <span id="speedLabel" style="font-size: 1.5em"> 30 FPS</span>
    </div>

    <script src="https://cdn.jsdelivr.net/npm/chart.js@2.8.0/dist/Chart.min.js"></script>
    <script>
      //define canvas info
      var c = document.getElementById("can");
      var ctx = c.getContext("2d");
      var chart = new EvolutionChart(document.getElementById("chartCan"));

      //define evolution info
      var target = { x: 800, y: 250, s: 50 };
      var players = [];
      var pw = 30;
      var ph = 9;
      var mutationrate = 0.002;
      var gencounter = 0;
      var playernum = 50;
      var walls = [{ x: 450, y: 125, w: 20, h: 250 }];
      var ticks = 0;
      var inter;
      var keepState = false;
      var genlen = 240;
      var winstrength = 15;

      ///THROUGHOUT SIM FUNCTIONS

      function draw() {
        c.width = c.width;
        for (var p = 0; p < players.length; p++) {
          //update player
          let player = players[p];
          player.setAccX(player.DNA[ticks][0]);
          player.setAccY(player.DNA[ticks][1]);
          player.angRect(player.XYtoAng(player.Xspeed, player.Yspeed), 0.75);
          player.update();

          // canvas boudnry collision check
          if (
            player.x > c.width - 10 ||
            player.x < 0 ||
            player.y > c.height ||
            player.y < 0
          ) {
            player.crash = true;
          }

          //wall collision check
          for (wall of walls) {
            if (
              player.x + pw > wall.x &&
              player.x < wall.x + wall.w &&
              player.y > wall.y &&
              player.y < wall.y + wall.h
            ) {
              player.crash = true;
            }
          }

          //Target collision check
          if (
            player.x > target.x - target.s / 2 &&
            player.x < target.x + target.s / 2 &&
            player.y > target.y - target.s / 2 &&
            player.y < target.y + target.s / 2
          ) {
            player.gotToTarget = true;
          }
        }
        //Draw the target
        ctx.fillRect(
          target["x"] - target["s"] / 2,
          target["y"] - target["s"] / 2,
          target["s"],
          target["s"]
        );

        //draw walls
        for (wall of walls) {
          ctx.fillRect(wall.x, wall.y, wall.w, wall.h);
        }
        ticks++;

        if (ticks == genlen) {
          ticks = 0;
          genepool = [];
          var fit;
          var fitnesses = 0;
          var succsses = 0;

          //create genepool
          for (player of players) {
            fit = calcfitness(player);
            fitnesses += fit;
            if (player.gotToTarget) succsses += 1;
            for (var i = 0; i < fit * fit; i++) {
              genepool.push(player);
            }
          }

          players.length = 0; //resets player array
          //create new gen
          for (var i = 0; i < playernum; i++) {
            var randindex = parseInt(Math.random() * genepool.length);
            players.push(mutate(genepool.splice(randindex, 1)[0]));
          }
          genepool.length = 0; //resets genepool array
          gencounter++;
          fitnesses /= playernum;
          succsses /= playernum;
          succsses *= 100;

          //changes mutation rate based on the avg fitness

          if (succsses > 0) {
            mutationrate *= 0.95;
          } else if (fitnesses < 60 && gencounter >= 10 && !keepState) {
            resetSim()
          }

          //make the fitness function have more bias for target hits if most targets are succeding
          //this is to make close but not perfect creaturs die quickly, thus bringing the success rate to 100%
          if (succsses > 50){
            winstrength = 25;
          }


          //writes info to the screen
          document.getElementById("gencounter").innerHTML =
            " | Gen " +
            gencounter +
            " | Avg Fitness = " +
            (Math.round((fitnesses+3) * 1000) / 1000) +
            " | Mutation Rate = " +
            (Math.round(mutationrate * 10000000) / 10000000)  + "%" +
            " | Success Rate = " + (Math.round(succsses * 1000) / 1000) + "%";

            addInfoToChart(chart, fitnesses, succsses);
        }
        document.getElementById("tickcounter").innerHTML = ticks;
      }

      function calcfitness(player) {
        var dist = player.recordDist;
        var fit = map(dist, 1, 1000, 100, 1);
        if (player.getToTarget) {
          fit *= winstrength;
        }
        if (player.crash) {
          fit /= 2;
        }
        return parseInt(fit);
      }

      function map(n, start1, stop1, start2, stop2) {
        return ((n - start1) / (stop1 - start1)) * (stop2 - start2) + start2;
      }

      function mutate(player) {
        let np = new EvolutionPlayer(
          200,
          250,
          pw,
          ph,
          target["x"],
          target["y"],
          genlen
        );
        np.DNA = DNAcopy(player.DNA);
        for (let i = 0; i < np.DNA.length; i++) {
          if (Math.random() < mutationrate) {
            np.DNA[i][0] = np.getRandom(0.5);
            np.DNA[i][1] = np.getRandom(0.5);
          }
        }
        return np;
      }

      function DNAcopy(dna) {
        var ndna = [];
        for (let i = 0; i < dna.length; i++) {
          ndna.push(dna[i].slice());
        }
        return ndna;
      }

      function resetPlayers() {
        players.length = 0;
        for (var i = 0; i < playernum; i++) {
          players.push(
            new EvolutionPlayer(200, 250, pw, ph, target["x"], target["y"], genlen)
          );
        }
      }

      function addInfoToChart(ch, fitdata, sucdata){
        ch.configInfo.data.labels.push(""+gencounter);
        ch.configInfo.data.datasets[0].data.push(fitdata+3);
        ch.configInfo.data.datasets[1].data.push(sucdata);
        ch.chart.update();

        //colors
        if (fitdata < 50){
            ch.configInfo.data.datasets[0].backgroundColor[0] = "rgba(255,0,0,0.2)";
            ch.configInfo.data.datasets[0].borderColor[0] = "rgba(255,0,0,0.75)";
        } else if (fitdata > 50 && fitdata < 85) {
            ch.configInfo.data.datasets[0].backgroundColor[0] = "rgba(0,0,255,0.2)";
            ch.configInfo.data.datasets[0].borderColor[0] = "rgba(0,0,0,255,0.75)";
        } else if (fitdata > 85) {
            ch.configInfo.data.datasets[0].backgroundColor[0] = "rgba(0,255,0,0.2)";
            ch.configInfo.data.datasets[0].borderColor[0] = "rgba(0,255,0,0.75)";
        }

      }

      //starts the sim
      function startSim(){
        inter = setInterval(draw, 1000 / 35);
        playernum = parseInt(document.getElementById("playerrange").value);
        genlen = parseInt(document.getElementById("genlen").value);
        console.log(genlen);

        //add players to list
        for (var i = 0; i < playernum; i++) {
          players.push(
            new EvolutionPlayer(200, 250, pw, ph, target["x"], target["y"], genlen)
          );
        }

        document.getElementById("startdiv").style = "visibility: hidden";
        document.getElementById("simControlGroup").style = "visibility: visible";

        c.onmousedown = null;
        clearInterval(presimint);
        startSim = null;
      }

      function changePlayerLable(el){
        document.getElementById("playerrangelable").innerHTML = " " + document.getElementById("playerrange").value + " Players";
      }

      function getMousePos(canvas, evt) {
        var rect = canvas.getBoundingClientRect();
        return {
          x: evt.clientX - rect.left,
          y: evt.clientY - rect.top
        };
      }

      c.onmousedown = function(e){
        m = getMousePos(c,e);
        for (let i = 0; i < walls.length; i++){
          var box = walls[i];
          if (m.x > box.x && m.x < box.x + box.w && m.y > box.y && m.y < box.y+box.h){
            console.log("wall is " + i);
            offset = [m["x"]-box.x,m["y"]-box.y]
            c.onmousemove = function(e){
              m = getMousePos(c,e);
              walls[i].x = m["x"]-offset[0];
              walls[i].y = m["y"]-offset[1];
            }
          }
        }
      }

      c.onmouseup = function(e){
        c.onmousemove = null;
      }

      function showPreSim(){
        c.width = c.width;
        ctx.fillRect(
          target["x"] - target["s"] / 2,
          target["y"] - target["s"] / 2,
          target["s"],
          target["s"]
        );

        //draw walls
        for (wall of walls) {
          ctx.fillRect(wall.x, wall.y, wall.w, wall.h);
        }

        //draw player location
        ctx.fillRect(190, 240, 20, 20)
      }
      var presimint = setInterval(showPreSim, 1000/60);

      function addWall(){
        walls.push({x:walls[walls.length-1].x-40, y:walls[walls.length-1].y, w:20, h:250});
      }

      function resetSim(){
        resetPlayers();
        gencounter = 0;
        chart.configInfo.data.labels = [];
        chart.configInfo.data.datasets[0].data = [];
        chart.configInfo.data.datasets[1].data = [];
        chart.chart.update();
      }

      function changeSpeed(speed){
        clearInterval(inter);
        inter = setInterval(draw, 1000/speed);
        document.getElementById("speedLabel").innerHTML = " " + speed + " FPS";
      }

      function changeKeepState(state){
        keepState = state;
      }
    </script>
  </body>
</html>