var options = {
    option1:{
        pond1: {
            r:-0.05,
            N:80,
            K:200
        },
        pond2: {
            r:0.15,
            N:25,
            K:100
        },
        pond3: {
            r:0.18,
            N:150,
            K:500
        }
    },
    option2:{
        pond1: {
            r:0.15,
            N:80,
            K:200
        },
        pond2: {
            r:-0.2,
            N:25,
            K:100
        },
        pond3: {
            r:0.18,
            N:150,
            K:500
        }
    },
    option3:{
        pond1: {
            r:0.1,
            N:80,
            K:200
        },
        pond2: {
            r:0.15,
            N:25,
            K:100
        },
        pond3: {
            r:0.01,
            N:150,
            K:500
        }
    }

}

var totalK = options.option1.pond1.K + options.option1.pond2.K + options.option1.pond3.K; 
var totalCarryingCapacity = totalK + 50;

function pickOption(option){
    totalr = 0;
    totalN = 0;
    switch (option) {
    case 1:
        totalCarryingCapacity = options.option1.pond1.K + options.option1.pond2.K + options.option1.pond3.K + 50;
        totalr = options.option1.pond1.r + options.option1.pond2.r + options.option1.pond3.r;
        totalN = options.option1.pond1.N + options.option1.pond2.N + options.option1.pond3.N;
        totalK = options.option1.pond1.K + options.option1.pond2.K + options.option1.pond3.K;
        break;
    case 2:
        totalCarryingCapacity = options.option2.pond1.K + options.option2.pond2.K + options.option2.pond3.K + 50;
        totalr = options.option2.pond1.r + options.option2.pond2.r + options.option2.pond3.r;
        totalN = options.option2.pond1.N + options.option2.pond2.N + options.option2.pond3.N;
        totalK = options.option2.pond1.K + options.option2.pond2.K + options.option2.pond3.K;
        break;
    case 3:
        totalCarryingCapacity = options.option3.pond1.K + options.option3.pond2.K + options.option3.pond3.K + 50;
        totalr = options.option3.pond1.r + options.option3.pond2.r + options.option3.pond3.r;
        totalN = options.option3.pond1.N + options.option3.pond2.N + options.option3.pond3.N;
        totalK = options.option3.pond1.K + options.option3.pond2.K + options.option3.pond3.K;
        break;
    default:
        break;
    }
} 

function updateTable_option(option) {
  switch (option) {
    case 1:
      document.getElementById("01-K").innerHTML = options.option1.pond1.K;
      document.getElementById("02-K").innerHTML = options.option1.pond2.K;
      document.getElementById("03-K").innerHTML = options.option1.pond3.K;

      document.getElementById("01-N").innerHTML = options.option1.pond1.N;
      document.getElementById("02-N").innerHTML = options.option1.pond2.N;
      document.getElementById("03-N").innerHTML = options.option1.pond3.N;

      document.getElementById("01-r").innerHTML = options.option1.pond1.r;
      document.getElementById("02-r").innerHTML = options.option1.pond2.r;
      document.getElementById("03-r").innerHTML = options.option1.pond3.r;
      break;
    case 2:
      document.getElementById("01-K").innerHTML = options.option2.pond1.K;
      document.getElementById("02-K").innerHTML = options.option2.pond2.K;
      document.getElementById("03-K").innerHTML = options.option2.pond3.K;

      document.getElementById("01-N").innerHTML = options.option2.pond1.N;
      document.getElementById("02-N").innerHTML = options.option2.pond2.N;
      document.getElementById("03-N").innerHTML = options.option2.pond3.N;

      document.getElementById("01-r").innerHTML = options.option2.pond1.r;
      document.getElementById("02-r").innerHTML = options.option2.pond2.r;
      document.getElementById("03-r").innerHTML = options.option2.pond3.r;
      break;
    case 3:
      document.getElementById("01-K").innerHTML = options.option3.pond1.K;
      document.getElementById("02-K").innerHTML = options.option3.pond2.K;
      document.getElementById("03-K").innerHTML = options.option3.pond3.K;

      document.getElementById("01-N").innerHTML = options.option3.pond1.N;
      document.getElementById("02-N").innerHTML = options.option3.pond2.N;
      document.getElementById("03-N").innerHTML = options.option3.pond3.N;

      document.getElementById("01-r").innerHTML = options.option3.pond1.r;
      document.getElementById("02-r").innerHTML = options.option3.pond2.r;
      document.getElementById("03-r").innerHTML = options.option3.pond3.r;
      break;
    default:
      break;
  }
}



var brd1 = JXG.JSXGraph.initBoard('mod-graph', {boundingbox: [-4, totalCarryingCapacity, 58,-50], axis:true, showCopyright: false, showNavigation: false});
var t1 = brd1.create('turtle');
t1.setAttribute({strokeColor: '#1586AD'});
var t2 = brd1.create('turtle');
t2.setAttribute({strokeColor: '#15AD33'});
var t3 = brd1.create('turtle');
t3.setAttribute({strokeColor:'#3A15AD'});
var t4 = brd1.create('turtle');

//t1.hideTurtle();


var p1_1 = brd1.create('point', [0,totalK], {name:'Total Carrying Capacity = ' + totalK + ' Breeding Females', size:4});
var p2_1 = brd1.create('point', [60,totalK], {size:4});
var carryingCapacityLine1 = brd1.create('line', [p1_1,p2_1], {strokeColor: '#D73F09', strokeWidth:4});


function clearturtle() {
  t1.cs();
  t1.ht();
  t2.cs();
  t2.ht();
  t3.cs();
  t3.ht();
  t4.cs();
  t4.ht();
}
            
function run(option) {
  t1.setPos(0, 2);
  t1.setPenSize(4); 
  t2.setPos(0, 2);
  t2.setPenSize(4); 
  t3.setPos(0, 2);
  t3.setPenSize(4);
  t4.setPos(0, 2);
  t4.setPenSize(6);
  
  dx1 = 0.1; // global
  x1 = 0.0; // global
  dx2 = 0.1;
  x2 = 0.0;
  dx3 = 0.1;
  x3 = 0.0;
  dx4 = 0.1;
  x4 = 0.0;

  a = 0.0001
  b = 0.0001

  switch (option) {
    case 1:
      N1 = options.option1.pond1.N;
      N2 = options.option1.pond2.N;
      N3 = options.option1.pond3.N;
      K1 = options.option1.pond1.K;
      K2 = options.option1.pond2.K;
      K3 = options.option1.pond3.K;
      r1 = options.option1.pond1.r;
      r2 = options.option1.pond2.r;
      r3 = options.option1.pond3.r;
      totalN = N1 + N2 + N3;
      totalK = K1 + K2 + K3;
      totalr = r1 + r2 + r3;
      break;
    case 2:
      N1 = options.option2.pond1.N;
      N2 = options.option2.pond2.N;
      N3 = options.option2.pond3.N;
      K1 = options.option2.pond1.K;
      K2 = options.option2.pond2.K;
      K3 = options.option2.pond3.K;
      r1 = options.option2.pond1.r;
      r2 = options.option2.pond2.r;
      r3 = options.option2.pond3.r;
      totalN = N1 + N2 + N3;
      totalK = K1 + K2 + K3;
      totalr = r1 + r2 + r3;
      break;
    case 3:
      N1 = options.option3.pond1.N;
      N2 = options.option3.pond2.N;
      N3 = options.option3.pond3.N;
      K1 = options.option3.pond1.K;
      K2 = options.option3.pond2.K;
      K3 = options.option3.pond3.K;
      r1 = options.option3.pond1.r;
      r2 = options.option3.pond2.r;
      r3 = options.option3.pond3.r;
      totalN = N1 + N2 + N3;
      totalK = K1 + K2 + K3;
      totalr = r1 + r2 + r3;
    default:
      break;
  }

  loop();
}



function loop() {

  var pond1turtle = (r1 * N1 * (1 - N1 / K1) - a * N1 + b * (N2 + N3)) * dx1;

  var pond2turtle = (r2 * N2 * (1 - N2 / K2) - a * N2 + b * (N1 + N3)) * dx2;

  var pond3turtle = (r3 * N3 * (1 - N3 / K3) - a * N3 + b * (N1 + N2)) * dx3;
  
  N1 += pond1turtle;
  N2 += pond2turtle;
  N3 += pond3turtle;
  
  var metaTurtle = pond1turtle + pond2turtle + pond3turtle;


  t1.moveTo([dx1 + t1.X(), pond1turtle + t1.Y()]);
  t2.moveTo([dx2 + t2.X(), pond2turtle + t2.Y()]);
  t3.moveTo([dx3 + t3.X(), pond3turtle + t3.Y()]);
  t4.moveTo([dx4 + t4.X(), metaTurtle + t4.Y()]);

  x1 += dx1;
  x2 += dx2;
  x3 += dx3;
  x4 += dx4;

  if (x1 < 58.0) {
    setTimeout(loop, 10);
  }
}