☰

Slither.io Trainer Hack

A Trainer to help you play on slither.io.Reveal the positions of worms close to you.Shows where's the closest and biggest food near you, and can also create 2 danger zone circles around you.

当前为 2021-11-21 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Slither.io Trainer Hack
  3. // @namespace    slithertrainer
  4. // @version      1.2
  5. // @description  A Trainer to help you play on slither.io.Reveal the positions of worms close to you.Shows where's the closest and biggest food near you, and can also create 2 danger zone circles around you.
  6. // @author       hacker09
  7. // @match        http://slither.io/
  8. // @license      Mozilla Public License Version 2.0
  9. // @grant        none
  10. // ==/UserScript==
  11.  
  12. const TARGET_FPS = 30;
  13.  
  14. window.log = function() {};
  15.  
  16. window.getSnakeLength = function() {
  17.     return (Math.floor(
  18.         150 *
  19.         (window.fpsls[window.snake.sct] + window.snake.fam / window.fmlts[window.snake.sct] - 1) -
  20.         50) / 10);
  21. };
  22. window.getSnakeWidth = function(sc) {
  23.     if (sc === undefined) sc = window.snake.sc;
  24.     return sc * 29.0;
  25. };
  26.  
  27. var canvas = window.canvas = (function() {
  28.     return {
  29.         // Ratio of screen size divided by canvas size.
  30.         canvasRatio: {
  31.             x: window.mc.width / window.ww,
  32.             y: window.mc.height / window.hh
  33.         },
  34.  
  35.         // Convert snake-relative coordinates to absolute screen coordinates.
  36.         mouseToScreen: function(point) {
  37.             var screenX = point.x + (window.ww / 2);
  38.             var screenY = point.y + (window.hh / 2);
  39.             return { x: screenX, y: screenY };
  40.         },
  41.  
  42.         // Convert screen coordinates to canvas coordinates.
  43.         screenToCanvas: function(point) {
  44.             var canvasX = window.csc *
  45.                 (point.x * canvas.canvasRatio.x) - parseInt(window.mc.style.left);
  46.             var canvasY = window.csc *
  47.                 (point.y * canvas.canvasRatio.y) - parseInt(window.mc.style.top);
  48.             return { x: canvasX, y: canvasY };
  49.         },
  50.  
  51.         // Convert map coordinates to mouse coordinates.
  52.         mapToMouse: function(point) {
  53.             var mouseX = (point.x - window.snake.xx) * window.gsc;
  54.             var mouseY = (point.y - window.snake.yy) * window.gsc;
  55.             return { x: mouseX, y: mouseY };
  56.         },
  57.  
  58.         // Map cordinates to Canvas cordinate shortcut
  59.         mapToCanvas: function(point) {
  60.             var c = canvas.mapToMouse(point);
  61.             c = canvas.mouseToScreen(c);
  62.             c = canvas.screenToCanvas(c);
  63.             return c;
  64.         },
  65.  
  66.         // Map to Canvas coordinate conversion for drawing circles.
  67.         // Radius also needs to scale by .gsc
  68.         circleMapToCanvas: function(circle) {
  69.             var newCircle = canvas.mapToCanvas(circle);
  70.             return canvas.circle(
  71.                 newCircle.x,
  72.                 newCircle.y,
  73.                 circle.radius * window.gsc
  74.             );
  75.         },
  76.  
  77.         // Constructor for point type
  78.         point: function(x, y) {
  79.             var p = {
  80.                 x: Math.round(x),
  81.                 y: Math.round(y)
  82.             };
  83.  
  84.             return p;
  85.         },
  86.  
  87.         // Constructor for rect type
  88.         rect: function(x, y, w, h) {
  89.             var r = {
  90.                 x: Math.round(x),
  91.                 y: Math.round(y),
  92.                 width: Math.round(w),
  93.                 height: Math.round(h)
  94.             };
  95.  
  96.             return r;
  97.         },
  98.  
  99.         // Constructor for circle type
  100.         circle: function(x, y, r) {
  101.             var c = {
  102.                 x: Math.round(x),
  103.                 y: Math.round(y),
  104.                 radius: Math.round(r)
  105.             };
  106.  
  107.             return c;
  108.         },
  109.  
  110.         // Fast atan2
  111.         fastAtan2: function(y, x) {
  112.             const QPI = Math.PI / 4;
  113.             const TQPI = 3 * Math.PI / 4;
  114.             var r = 0.0;
  115.             var angle = 0.0;
  116.             var abs_y = Math.abs(y) + 1e-10;
  117.             if (x < 0) {
  118.                 r = (x + abs_y) / (abs_y - x);
  119.                 angle = TQPI;
  120.             } else {
  121.                 r = (x - abs_y) / (x + abs_y);
  122.                 angle = QPI;
  123.             }
  124.             angle += (0.1963 * r * r - 0.9817) * r;
  125.             if (y < 0) {
  126.                 return -angle;
  127.             }
  128.  
  129.             return angle;
  130.         },
  131.  
  132.         // Adjusts zoom in response to the mouse wheel.
  133.         setZoom: function(e) {
  134.             // Scaling ratio
  135.             if (window.gsc) {
  136.                 window.gsc *= Math.pow(0.9, e.wheelDelta / -120 || e.detail / 2 || 0);
  137.                 window.desired_gsc = window.gsc;
  138.             }
  139.         },
  140.  
  141.         // Restores zoom to the default value.
  142.         resetZoom: function() {
  143.             window.gsc = 0.9;
  144.             window.desired_gsc = 0.9;
  145.         },
  146.  
  147.         // Maintains Zoom
  148.         maintainZoom: function() {
  149.             if (window.desired_gsc !== undefined) {
  150.                 window.gsc = window.desired_gsc;
  151.             }
  152.         },
  153.  
  154.         // Sets background to the given image URL.
  155.         // Defaults to slither.io's own background.
  156.         setBackground: function(url) {
  157.             url = typeof url !== 'undefined' ? url : '/s/bg45.jpg';
  158.             window.ii.src = url;
  159.         },
  160.  
  161.         // Draw a rectangle on the canvas.
  162.         drawRect: function(rect, color, fill, alpha) {
  163.             if (alpha === undefined) alpha = 1;
  164.  
  165.             var context = window.mc.getContext('2d');
  166.             var lc = canvas.mapToCanvas({x: rect.x, y: rect.y});
  167.  
  168.             context.save();
  169.             context.globalAlpha = alpha;
  170.             context.strokeStyle = color;
  171.             context.rect(lc.x, lc.y, rect.width * window.gsc, rect.height * window.gsc);
  172.             context.stroke();
  173.             if (fill) {
  174.                 context.fillStyle = color;
  175.                 context.fill();
  176.             }
  177.             context.restore();
  178.         },
  179.  
  180.         // Draw a circle on the canvas.
  181.         drawCircle: function(circle, color, fill, alpha) {
  182.             if (alpha === undefined) alpha = 1;
  183.             if (circle.radius === undefined) circle.radius = 5;
  184.  
  185.             var context = window.mc.getContext('2d');
  186.             var drawCircle = canvas.circleMapToCanvas(circle);
  187.  
  188.             context.save();
  189.             context.globalAlpha = alpha;
  190.             context.beginPath();
  191.             context.strokeStyle = color;
  192.             context.arc(drawCircle.x, drawCircle.y, drawCircle.radius, 0, Math.PI * 2);
  193.             context.stroke();
  194.             if (fill) {
  195.                 context.fillStyle = color;
  196.                 context.fill();
  197.             }
  198.             context.restore();
  199.         },
  200.  
  201.         // Draw an angle.
  202.         // @param {number} start -- where to start the angle
  203.         // @param {number} angle -- width of the angle
  204.         // @param {bool} danger -- green if false, red if true
  205.         drawAngle: function(start, angle, color, fill, alpha) {
  206.             if (alpha === undefined) alpha = 0.6;
  207.  
  208.             var context = window.mc.getContext('2d');
  209.  
  210.             context.save();
  211.             context.globalAlpha = alpha;
  212.             context.beginPath();
  213.             context.moveTo(window.mc.width / 2, window.mc.height / 2);
  214.             context.arc(window.mc.width / 2, window.mc.height / 2, window.gsc * 100, start, angle);
  215.             context.lineTo(window.mc.width / 2, window.mc.height / 2);
  216.             context.closePath();
  217.             context.stroke();
  218.             if (fill) {
  219.                 context.fillStyle = color;
  220.                 context.fill();
  221.             }
  222.             context.restore();
  223.         },
  224.  
  225.         // Draw a line on the canvas.
  226.         drawLine: function(p1, p2, color, width) {
  227.             if (width === undefined) width = 5;
  228.  
  229.             var context = window.mc.getContext('2d');
  230.             var dp1 = canvas.mapToCanvas(p1);
  231.             var dp2 = canvas.mapToCanvas(p2);
  232.  
  233.             context.save();
  234.             context.beginPath();
  235.             context.lineWidth = width * window.gsc;
  236.             context.strokeStyle = color;
  237.             context.moveTo(dp1.x, dp1.y);
  238.             context.lineTo(dp2.x, dp2.y);
  239.             context.stroke();
  240.             context.restore();
  241.         },
  242.  
  243.         // Given the start and end of a line, is point left.
  244.         isLeft: function(start, end, point) {
  245.             return ((end.x - start.x) * (point.y - start.y) -
  246.              (end.y - start.y) * (point.x - start.x)) > 0;
  247.  
  248.         },
  249.  
  250.         // Get distance squared
  251.         getDistance2: function(x1, y1, x2, y2) {
  252.             var distance2 = Math.pow(x1 - x2, 2) + Math.pow(y1 - y2, 2);
  253.             return distance2;
  254.         },
  255.  
  256.         getDistance2FromSnake: function(point) {
  257.             point.distance = canvas.getDistance2(window.snake.xx, window.snake.yy,
  258.                 point.xx, point.yy);
  259.             return point;
  260.         },
  261.  
  262.         // Check if point in Rect
  263.         pointInRect: function(point, rect) {
  264.             if (rect.x <= point.x && rect.y <= point.y &&
  265.                 rect.x + rect.width >= point.x && rect.y + rect.height >= point.y) {
  266.                 return true;
  267.             }
  268.             return false;
  269.         },
  270.  
  271.         // Check if circles intersect
  272.         circleIntersect: function(circle1, circle2) {
  273.             var bothRadii = circle1.radius + circle2.radius;
  274.  
  275.             // Pretends the circles are squares for a quick collision check.
  276.             // If it collides, do the more expensive circle check.
  277.             if (circle1.x + bothRadii > circle2.x &&
  278.                 circle1.y + bothRadii > circle2.y &&
  279.                 circle1.x < circle2.x + bothRadii &&
  280.                 circle1.y < circle2.y + bothRadii) {
  281.  
  282.                 var distance2 = canvas.getDistance2(circle1.x, circle1.y, circle2.x, circle2.y);
  283.  
  284.                 if (distance2 < bothRadii * bothRadii) {
  285.                     if (window.visualDebugging) {
  286.                         var collisionPointCircle = canvas.circle(
  287.                             ((circle1.x * circle2.radius) + (circle2.x * circle1.radius)) /
  288.                                 bothRadii,
  289.                             ((circle1.y * circle2.radius) + (circle2.y * circle1.radius)) /
  290.                                 bothRadii,
  291.                             5
  292.                         );
  293.                         canvas.drawCircle(circle2, 'red', true);
  294.                         canvas.drawCircle(collisionPointCircle, 'cyan', true);
  295.                     }
  296.                     return true;
  297.                 }
  298.             }
  299.             return false;
  300.         }
  301.     };
  302. })();
  303.  
  304. var bot = window.bot = (function() {
  305.     return {
  306.         isBotRunning: false,
  307.         isBotEnabled: true,
  308.         lookForFood: false,
  309.         collisionPoints: [],
  310.         collisionAngles: [],
  311.         scores: [],
  312.         foodTimeout: undefined,
  313.         sectorBoxSide: 0,
  314.         defaultAccel: 0,
  315.         sectorBox: {},
  316.         currentFood: {},
  317.         MID_X: 0,
  318.         MID_Y: 0,
  319.         MAP_R: 0,
  320.  
  321.         quickRespawn: function() {
  322.             window.dead_mtm = 0;
  323.             window.login_fr = 0;
  324.  
  325.             bot.isBotRunning = false;
  326.             window.forcing = true;
  327.             window.connect();
  328.             window.forcing = false;
  329.         },
  330.  
  331.         // Avoid headPoint
  332.         avoidHeadPoint: function(collisionPoint) {},
  333.  
  334.         // Avoid collison point by ang
  335.         // ang radians <= Math.PI (180deg)
  336.         avoidCollisionPoint: function(collisionPoint, ang) {
  337.         },
  338.  
  339.         // Sorting by  property 'distance'
  340.         sortDistance: function(a, b) {
  341.             return a.distance - b.distance;
  342.         },
  343.  
  344.         // get collision angle index, expects angle +/i 0 to Math.PI
  345.         getAngleIndex: function(angle) {
  346.             const ARCSIZE = Math.PI / 4;
  347.             var index;
  348.  
  349.             if (angle < 0) {
  350.                 angle += 2 * Math.PI;
  351.             }
  352.  
  353.             index = Math.round(angle * (1 / ARCSIZE));
  354.  
  355.             if (index === (2 * Math.PI) / ARCSIZE) {
  356.                 return 0;
  357.             }
  358.             return index;
  359.         },
  360.  
  361.         // Add to collisionAngles if distance is closer
  362.         addCollisionAngle: function(sp) {
  363.             var ang = canvas.fastAtan2(
  364.                 Math.round(sp.yy - window.snake.yy),
  365.                 Math.round(sp.xx - window.snake.xx));
  366.             var aIndex = bot.getAngleIndex(ang);
  367.  
  368.             var actualDistance = Math.round(
  369.                 sp.distance - (Math.pow(window.getSnakeWidth(window.snakes[sp.snake].sc), 2) / 2));
  370.  
  371.             if (bot.collisionAngles[aIndex] === undefined) {
  372.                 bot.collisionAngles[aIndex] = {
  373.                     x: Math.round(sp.xx),
  374.                     y: Math.round(sp.yy),
  375.                     ang: ang,
  376.                     snake: sp.snake,
  377.                     distance: actualDistance
  378.                 };
  379.             } else if (bot.collisionAngles[aIndex].distance > sp.distance) {
  380.                 bot.collisionAngles[aIndex].x = Math.round(sp.xx);
  381.                 bot.collisionAngles[aIndex].y = Math.round(sp.yy);
  382.                 bot.collisionAngles[aIndex].ang = ang;
  383.                 bot.collisionAngles[aIndex].snake = sp.snake;
  384.                 bot.collisionAngles[aIndex].distance = actualDistance;
  385.             }
  386.         },
  387.  
  388.         // Get closest collision point per snake.
  389.         getCollisionPoints: function() {
  390.             var scPoint;
  391.  
  392.             bot.collisionPoints = [];
  393.             bot.collisionAngles = [];
  394.  
  395.  
  396.             for (var snake = 0, ls = window.snakes.length; snake < ls; snake++) {
  397.                 scPoint = undefined;
  398.  
  399.                 if (window.snakes[snake].id !== window.snake.id &&
  400.                     window.snakes[snake].alive_amt === 1) {
  401.                     if (window.visualDebugging) {
  402.                         canvas.drawCircle(canvas.circle(
  403.                             window.snakes[snake].xx,
  404.                             window.snakes[snake].yy,
  405.                             window.getSnakeWidth(window.snakes[snake].sc) / 2),
  406.                             'red', false);
  407.                     }
  408.                     scPoint = {
  409.                         xx: window.snakes[snake].xx,
  410.                         yy: window.snakes[snake].yy,
  411.                         snake: snake
  412.                     };
  413.                     canvas.getDistance2FromSnake(scPoint);
  414.                     bot.addCollisionAngle(scPoint);
  415.  
  416.                     for (var pts = 0, lp = window.snakes[snake].pts.length; pts < lp; pts++) {
  417.                         if (!window.snakes[snake].pts[pts].dying &&
  418.                             canvas.pointInRect(
  419.                                 {x: window.snakes[snake].pts[pts].xx,
  420.                                     y: window.snakes[snake].pts[pts].yy}, bot.sectorBox)
  421.                             ) {
  422.                             var collisionPoint = {
  423.                                 xx: window.snakes[snake].pts[pts].xx,
  424.                                 yy: window.snakes[snake].pts[pts].yy,
  425.                                 snake: snake
  426.                             };
  427.  
  428.                             if (window.visualDebugging && true === false) {
  429.                                 canvas.drawCircle(canvas.circle(
  430.                                     collisionPoint.xx,
  431.                                     collisionPoint.yy,
  432.                                     window.getSnakeWidth(window.snakes[snake].sc) / 2),
  433.                                     '#00FF00', false);
  434.                             }
  435.  
  436.                             canvas.getDistance2FromSnake(collisionPoint);
  437.                             bot.addCollisionAngle(collisionPoint);
  438.  
  439.                             if (scPoint === undefined ||
  440.                                 scPoint.distance > collisionPoint.distance) {
  441.                                 scPoint = collisionPoint;
  442.                             }
  443.                         }
  444.                     }
  445.                 }
  446.                 if (scPoint !== undefined) {
  447.                     bot.collisionPoints.push(scPoint);
  448.                     if (window.visualDebugging) {
  449.                         canvas.drawCircle(canvas.circle(
  450.                             scPoint.xx,
  451.                             scPoint.yy,
  452.                             window.getSnakeWidth(window.snakes[scPoint.snake].sc) / 2
  453.                         ), 'red', false);
  454.                     }
  455.                 }
  456.             }
  457.  
  458.             if (canvas.getDistance2(bot.MID_X, bot.MID_Y, window.snake.xx, window.snake.yy) >
  459.                 Math.pow(bot.MAP_R - 1000, 2)) {
  460.                 var midAng = canvas.fastAtan2(
  461.                     window.snake.yy - bot.MID_X, window.snake.xx - bot.MID_Y);
  462.                 scPoint = {
  463.                     xx: bot.MID_X + bot.MAP_R * Math.cos(midAng),
  464.                     yy: bot.MID_Y + bot.MAP_R * Math.sin(midAng),
  465.                     snake: -1
  466.                 };
  467.                 bot.collisionPoints.push(scPoint);
  468.                 if (window.visualDebugging) {
  469.                     canvas.drawCircle(canvas.circle(
  470.                         scPoint.xx,
  471.                         scPoint.yy,
  472.                         window.getSnakeWidth(1) * 5
  473.                     ), 'yellow', false);
  474.                 }
  475.             }
  476.  
  477.  
  478.             bot.collisionPoints.sort(bot.sortDistance);
  479.             if (window.visualDebugging) {
  480.                 for (var i = 0; i < bot.collisionAngles.length; i++) {
  481.                     if (bot.collisionAngles[i] !== undefined) {
  482.                         canvas.drawLine(
  483.                         {x: window.snake.xx, y: window.snake.yy},
  484.                         {x: bot.collisionAngles[i].x, y: bot.collisionAngles[i].y},
  485.                         '#99ffcc', 2);
  486.                     }
  487.                 }
  488.             }
  489.         },
  490.  
  491.         // Checks to see if you are going to collide with anything in the collision detection radius
  492.         checkCollision: function(r) {
  493.             if (!window.collisionDetection) return false;
  494.  
  495.             r = Number(r);
  496.             var xx = Number(window.snake.xx.toFixed(3));
  497.             var yy = Number(window.snake.yy.toFixed(3));
  498.  
  499.             window.snake.cos = Math.cos(window.snake.ang).toFixed(3);
  500.             window.snake.sin = Math.sin(window.snake.ang).toFixed(3);
  501.  
  502.             const speedMult = window.snake.sp / 5.78;
  503.             const widthMult = window.getSnakeWidth();
  504.  
  505.             var headCircle = canvas.circle(
  506.                 xx, yy,
  507.                 speedMult * r / 2 * widthMult / 2
  508.             );
  509.  
  510.             var fullHeadCircle = canvas.circle(
  511.                 xx, yy,
  512.                 r * widthMult / 2
  513.             );
  514.  
  515.             var sidecircle_r = canvas.circle(
  516.                 window.snake.lnp.xx -
  517.                     ((window.snake.lnp.yy + window.snake.sin * window.getSnakeWidth()) -
  518.                     window.snake.lnp.yy),
  519.                 window.snake.lnp.yy +
  520.                     ((window.snake.lnp.xx + window.snake.cos * window.getSnakeWidth()) -
  521.                     window.snake.lnp.xx),
  522.                 window.getSnakeWidth() * speedMult
  523.             );
  524.  
  525.             var sidecircle_l = canvas.circle(
  526.                 window.snake.lnp.xx +
  527.                     ((window.snake.lnp.yy + window.snake.sin * window.getSnakeWidth()) -
  528.                     window.snake.lnp.yy),
  529.                  window.snake.lnp.yy -
  530.                     ((window.snake.lnp.xx + window.snake.cos * window.getSnakeWidth()) -
  531.                     window.snake.lnp.xx),
  532.                 window.getSnakeWidth() * speedMult
  533.             );
  534.  
  535.             window.snake.sidecircle_r = sidecircle_r;
  536.             window.snake.sidecircle_l = sidecircle_l;
  537.  
  538.             if (window.visualDebugging) {
  539.                 canvas.drawCircle(fullHeadCircle, 'red');
  540.                 canvas.drawCircle(headCircle, 'blue', false);
  541.                 // canvas.drawCircle(sidecircle_r, 'orange', true, 0.3);
  542.                 // canvas.drawCircle(sidecircle_l, 'orange', true, 0.3);
  543.             }
  544.  
  545.             bot.getCollisionPoints();
  546.             if (bot.collisionPoints.length === 0) return false;
  547.  
  548.             for (var i = 0; i < bot.collisionPoints.length; i++) {
  549.                 // -1 snake is special case for non snake object.
  550.                 var colR = bot.collisionPoints[i].snake === -1 ? window.getSnakeWidth(1) * 5 :
  551.                     window.getSnakeWidth(window.snakes[bot.collisionPoints[i].snake].sc) / 2;
  552.  
  553.                 var collisionCircle = canvas.circle(
  554.                     bot.collisionPoints[i].xx,
  555.                     bot.collisionPoints[i].yy,
  556.                     colR
  557.                 );
  558.  
  559.                 if (canvas.circleIntersect(headCircle, collisionCircle)) {
  560.                     window.setAcceleration(bot.defaultAccel);
  561.                     bot.avoidCollisionPoint(bot.collisionPoints[i]);
  562.                     return true;
  563.                 }
  564.  
  565.                 if (bot.collisionPoints[i].snake !== -1) {
  566.                     var eHeadCircle = canvas.circle(
  567.                         window.snakes[bot.collisionPoints[i].snake].xx,
  568.                         window.snakes[bot.collisionPoints[i].snake].yy,
  569.                         colR
  570.                     );
  571.                 }
  572.             }
  573.             window.setAcceleration(bot.defaultAccel);
  574.             return false;
  575.         },
  576.  
  577.         sortScore: function(a, b) {
  578.             return b.score - a.score;
  579.         },
  580.  
  581.         // 2.546 ~ 1 / (Math.PI / 8) - round angle difference up to nearest 22.5 degrees.
  582.         // Round food up to nearest 5, square for distance^2
  583.         scoreFood: function(f) {
  584.             f.score = Math.pow(Math.ceil(f.sz / 5) * 5, 2) /
  585.                 f.distance / (Math.ceil(f.da * 2.546) / 2.546);
  586.         },
  587.  
  588.         computeFoodGoal: function() {
  589.             var foodClusters = [];
  590.             var foodGetIndex = [];
  591.             var fi = 0;
  592.             var sw = window.getSnakeWidth();
  593.  
  594.             for (var i = 0; i < window.foods.length && window.foods[i] !== null; i++) {
  595.                 var a;
  596.                 var da;
  597.                 var distance;
  598.                 var sang = window.snake.ehang;
  599.                 var f = window.foods[i];
  600.  
  601.                 if (!f.eaten &&
  602.                     !(
  603.                     canvas.circleIntersect(
  604.                         canvas.circle(f.xx, f.yy, 2),
  605.                         window.snake.sidecircle_l) ||
  606.                     canvas.circleIntersect(
  607.                         canvas.circle(f.xx, f.yy, 2),
  608.                         window.snake.sidecircle_r))) {
  609.  
  610.                     var cx = Math.round(Math.round(f.xx / sw) * sw);
  611.                     var cy = Math.round(Math.round(f.yy / sw) * sw);
  612.                     var csz = Math.round(f.sz);
  613.  
  614.                     if (foodGetIndex[cx + '|' + cy] === undefined) {
  615.                         foodGetIndex[cx + '|' + cy] = fi;
  616.                         a = canvas.fastAtan2(cy - window.snake.yy, cx - window.snake.xx);
  617.                         da = Math.min(
  618.                             (2 * Math.PI) - Math.abs(a - sang), Math.abs(a - sang));
  619.                         distance = Math.round(
  620.                             canvas.getDistance2(cx, cy, window.snake.xx, window.snake.yy));
  621.                         foodClusters[fi] = {
  622.                             x: cx, y: cy, a: a, da: da, sz: csz, distance: distance, score: 0.0 };
  623.                         fi++;
  624.                     } else {
  625.                         foodClusters[foodGetIndex[cx + '|' + cy]].sz += csz;
  626.                     }
  627.                 }
  628.             }
  629.  
  630.             foodClusters.forEach(bot.scoreFood);
  631.             foodClusters.sort(bot.sortScore);
  632.  
  633.             for (i = 0; i < foodClusters.length; i++) {
  634.                 var aIndex = bot.getAngleIndex(foodClusters[i].a);
  635.                 if (bot.collisionAngles[aIndex] === undefined ||
  636.                     (bot.collisionAngles[aIndex].distance - Math.pow(window.getSnakeWidth(), 2) >
  637.                     foodClusters[i].distance && foodClusters[i].sz > 10)
  638.                     ) {
  639.                     bot.currentFood = foodClusters[i];
  640.                     return;
  641.                 }
  642.             }
  643.             bot.currentFood = {x: bot.MID_X, y: bot.MID_Y};
  644.         },
  645.  
  646.         foodAccel: function() {
  647.             var aIndex = 0;
  648.  
  649.             if (bot.currentFood && bot.currentFood.sz > 60) {
  650.                 aIndex = bot.getAngleIndex(bot.currentFood.a);
  651.  
  652.                 if (
  653.                     bot.collisionAngles[aIndex] && bot.collisionAngles[aIndex].distance >
  654.                     bot.currentFood.distance * 2) {
  655.                     return 1;
  656.                 }
  657.  
  658.                 if (bot.collisionAngles[aIndex] === undefined) {
  659.                     return 1;
  660.                 }
  661.             }
  662.  
  663.             return bot.defaultAccel;
  664.         },
  665.  
  666.         // Loop version of collision check
  667.         collisionLoop: function() {
  668.             if (bot.checkCollision(window.collisionRadiusMultiplier)) {
  669.                 bot.lookForFood = false;
  670.                 if (bot.foodTimeout) {
  671.                     window.clearTimeout(bot.foodTimeout);
  672.                     bot.foodTimeout = window.setTimeout(bot.foodTimer, 1000 / TARGET_FPS * 4);
  673.                 }
  674.             } else {
  675.                 bot.lookForFood = true;
  676.                 if (bot.foodTimeout === undefined) {
  677.                     bot.foodTimeout = window.setTimeout(bot.foodTimer, 1000 / TARGET_FPS * 4);
  678.                 }
  679.                 window.setAcceleration(bot.foodAccel());
  680.             }
  681.         },
  682.  
  683.         // Timer version of food check
  684.         foodTimer: function() {
  685.             if (window.playing && bot.lookForFood &&
  686.                 window.snake !== null && window.snake.alive_amt === 1) {
  687.                 bot.computeFoodGoal();
  688.                 window.goalCoordinates = bot.currentFood;
  689.             }
  690.             bot.foodTimeout = undefined;
  691.         }
  692.     };
  693. })();
  694.  
  695. var userInterface = window.userInterface = (function() {
  696.     // Save the original slither.io functions so we can modify them, or reenable them later.
  697.     var original_keydown = document.onkeydown;
  698.     var original_onmouseDown = window.onmousedown;
  699.     var original_oef = window.oef;
  700.     var original_redraw = window.redraw;
  701.     var original_onmousemove = window.onmousemove;
  702.  
  703.     window.oef = function() {};
  704.     window.redraw = function() {};
  705.  
  706.     return {
  707.         overlays: {},
  708.  
  709.         initOverlays: function() {
  710.             var botOverlay = document.createElement('div');
  711.             botOverlay.style.position = 'fixed';
  712.             botOverlay.style.right = '5px';
  713.             botOverlay.style.bottom = '112px';
  714.             botOverlay.style.width = '150px';
  715.             botOverlay.style.height = '85px';
  716.             // botOverlay.style.background = 'rgba(0, 0, 0, 0.5)';
  717.             botOverlay.style.color = '#C0C0C0';
  718.             botOverlay.style.fontFamily = 'Consolas, Verdana';
  719.             botOverlay.style.zIndex = 999;
  720.             botOverlay.style.fontSize = '14px';
  721.             botOverlay.style.padding = '5px';
  722.             botOverlay.style.borderRadius = '5px';
  723.             botOverlay.className = 'nsi';
  724.             document.body.appendChild(botOverlay);
  725.  
  726.             var serverOverlay = document.createElement('div');
  727.             serverOverlay.style.position = 'fixed';
  728.             serverOverlay.style.right = '5px';
  729.             serverOverlay.style.bottom = '5px';
  730.             serverOverlay.style.width = '160px';
  731.             serverOverlay.style.height = '14px';
  732.             serverOverlay.style.color = '#C0C0C0';
  733.             serverOverlay.style.fontFamily = 'Consolas, Verdana';
  734.             serverOverlay.style.zIndex = 999;
  735.             serverOverlay.style.fontSize = '14px';
  736.             serverOverlay.className = 'nsi';
  737.             document.body.appendChild(serverOverlay);
  738.             var prefOverlay = document.createElement('div');
  739.             prefOverlay.style.position = 'fixed';
  740.             prefOverlay.style.left = '10px';
  741.             prefOverlay.style.top = '75px';
  742.             prefOverlay.style.width = '260px';
  743.             prefOverlay.style.height = '210px';
  744.             // prefOverlay.style.background = 'rgba(0, 0, 0, 0.5)';
  745.             prefOverlay.style.color = '#C0C0C0';
  746.             prefOverlay.style.fontFamily = 'Consolas, Verdana';
  747.             prefOverlay.style.zIndex = 999;
  748.             prefOverlay.style.fontSize = '14px';
  749.             prefOverlay.style.padding = '5px';
  750.             prefOverlay.style.borderRadius = '5px';
  751.             prefOverlay.className = 'nsi';
  752.             document.body.appendChild(prefOverlay);
  753.  
  754.             var statsOverlay = document.createElement('div');
  755.             statsOverlay.style.position = 'fixed';
  756.             statsOverlay.style.left = '10px';
  757.             statsOverlay.style.top = '295px';
  758.             statsOverlay.style.width = '140px';
  759.             statsOverlay.style.height = '210px';
  760.             // statsOverlay.style.background = 'rgba(0, 0, 0, 0.5)';
  761.             statsOverlay.style.color = '#C0C0C0';
  762.             statsOverlay.style.fontFamily = 'Consolas, Verdana';
  763.             statsOverlay.style.zIndex = 998;
  764.             statsOverlay.style.fontSize = '14px';
  765.             statsOverlay.style.padding = '5px';
  766.             statsOverlay.style.borderRadius = '5px';
  767.             statsOverlay.className = 'nsi';
  768.             document.body.appendChild(statsOverlay);
  769.  
  770.             userInterface.overlays.botOverlay = botOverlay;
  771.             userInterface.overlays.serverOverlay = serverOverlay;
  772.             userInterface.overlays.prefOverlay = prefOverlay;
  773.             userInterface.overlays.statsOverlay = statsOverlay;
  774.         },
  775.  
  776.         toggleOverlays: function() {
  777.             Object.keys(userInterface.overlays).forEach(function(okey) {
  778.                 var oVis = userInterface.overlays[okey].style.visibility !== 'hidden' ?
  779.                     'hidden' : 'visible';
  780.                 userInterface.overlays[okey].style.visibility = oVis;
  781.                 window.visualDebugging = oVis === 'visible';
  782.             });
  783.         },
  784.  
  785.         // Save variable to local storage
  786.         savePreference: function(item, value) {
  787.             window.localStorage.setItem(item, value);
  788.             userInterface.onPrefChange();
  789.         },
  790.  
  791.         // Load a variable from local storage
  792.         loadPreference: function(preference, defaultVar) {
  793.             var savedItem = window.localStorage.getItem(preference);
  794.             if (savedItem !== null) {
  795.                 if (savedItem === 'true') {
  796.                     window[preference] = true;
  797.                 } else if (savedItem === 'false') {
  798.                     window[preference] = false;
  799.                 } else {
  800.                     window[preference] = savedItem;
  801.                 }
  802.                 window.log('Setting found for ' + preference + ': ' + window[preference]);
  803.             } else {
  804.                 window[preference] = defaultVar;
  805.                 window.log('No setting found for ' + preference +
  806.                     '. Used default: ' + window[preference]);
  807.             }
  808.             userInterface.onPrefChange();
  809.             return window[preference];
  810.         },
  811.  
  812.         // Saves username when you click on "Play" button
  813.         playButtonClickListener: function() {
  814.             userInterface.saveNick();
  815.             userInterface.loadPreference('autoRespawn', false);
  816.             userInterface.onPrefChange();
  817.         },
  818.  
  819.         // Preserve nickname
  820.         saveNick: function() {
  821.             var nick = document.getElementById('nick').value;
  822.             userInterface.savePreference('savedNick', nick);
  823.         },
  824.  
  825.         // Hide top score
  826.         hideTop: function() {
  827.             var nsidivs = document.querySelectorAll('div.nsi');
  828.             for (var i = 0; i < nsidivs.length; i++) {
  829.                 if (nsidivs[i].style.top === '4px' && nsidivs[i].style.width === '300px') {
  830.                     nsidivs[i].style.visibility = 'hidden';
  831.                     bot.isTopHidden = true;
  832.                     window.topscore = nsidivs[i];
  833.                 }
  834.             }
  835.         },
  836.  
  837.         // Store FPS data
  838.         framesPerSecond: {
  839.             fps: 0,
  840.             fpsTimer: function() {
  841.                 if (window.playing && window.fps && window.lrd_mtm) {
  842.                     if (Date.now() - window.lrd_mtm > 970) {
  843.                         userInterface.framesPerSecond.fps = window.fps;
  844.                     }
  845.                 }
  846.             }
  847.         },
  848.  
  849.         onkeydown: function(e) {
  850.             // Original slither.io onkeydown function + whatever is under it
  851.             original_keydown(e);
  852.             if (window.playing) {
  853.                 // Letter `T` to toggle bot
  854.                 if (e.keyCode === 84) {
  855.                     bot.isBotEnabled = !bot.isBotEnabled;
  856.                 }
  857.                 // Letter 'U' to toggle debugging (console)
  858.                 if (e.keyCode === 85) {
  859.                     window.logDebugging = !window.logDebugging;
  860.                     console.log('Log debugging set to: ' + window.logDebugging);
  861.                     userInterface.savePreference('logDebugging', window.logDebugging);
  862.                 }
  863.                 // Letter 'Y' to toggle debugging (visual)
  864.                 if (e.keyCode === 89) {
  865.                     window.visualDebugging = !window.visualDebugging;
  866.                     console.log('Visual debugging set to: ' + window.visualDebugging);
  867.                     userInterface.savePreference('visualDebugging', window.visualDebugging);
  868.                 }
  869.                 // Letter 'I' to toggle autorespawn
  870.                 if (e.keyCode === 73) {
  871.                     window.autoRespawn = !window.autoRespawn;
  872.                     console.log('Automatic Respawning set to: ' + window.autoRespawn);
  873.                     userInterface.savePreference('autoRespawn', window.autoRespawn);
  874.                 }
  875.                 // Letter 'H' to toggle hidden mode
  876.                 if (e.keyCode === 72) {
  877.                     userInterface.toggleOverlays();
  878.                 }
  879.                 // Letter 'O' to change rendermode (visual)
  880.                 if (e.keyCode === 79) {
  881.                     userInterface.toggleMobileRendering(!window.mobileRender);
  882.                 }
  883.                 // Letter 'C' to toggle Collision detection / enemy avoidance
  884.                 if (e.keyCode === 67) {
  885.                     window.collisionDetection = !window.collisionDetection;
  886.                     console.log('collisionDetection set to: ' + window.collisionDetection);
  887.                     userInterface.savePreference('collisionDetection', window.collisionDetection);
  888.                 }
  889.                 // Letter 'A' to increase collision detection radius
  890.                 if (e.keyCode === 65) {
  891.                     window.collisionRadiusMultiplier++;
  892.                     console.log(
  893.                         'collisionRadiusMultiplier set to: ' + window.collisionRadiusMultiplier);
  894.                     userInterface.savePreference(
  895.                         'collisionRadiusMultiplier', window.collisionRadiusMultiplier);
  896.                 }
  897.                 // Letter 'S' to decrease collision detection radius
  898.                 if (e.keyCode === 83) {
  899.                     if (window.collisionRadiusMultiplier > 1) {
  900.                         window.collisionRadiusMultiplier--;
  901.                         console.log(
  902.                             'collisionRadiusMultiplier set to: ' +
  903.                             window.collisionRadiusMultiplier);
  904.                         userInterface.savePreference(
  905.                             'collisionRadiusMultiplier', window.collisionRadiusMultiplier);
  906.                     }
  907.                 }
  908.                 // Letter 'Z' to reset zoom
  909.                 if (e.keyCode === 90) {
  910.                     canvas.resetZoom();
  911.                 }
  912.                 // Letter 'Q' to quit to main menu
  913.                 if (e.keyCode === 81) {
  914.                     window.autoRespawn = false;
  915.                     userInterface.quit();
  916.                 }
  917.                 // 'ESC' to quickly respawn
  918.                 if (e.keyCode === 27) {
  919.                     bot.quickRespawn();
  920.                 }
  921.                 // Save nickname when you press "Enter"
  922.                 if (e.keyCode === 13) {
  923.                     userInterface.saveNick();
  924.                 }
  925.                 userInterface.onPrefChange();
  926.             }
  927.         },
  928.  
  929.         // Manual mobile rendering
  930.         toggleMobileRendering: function(mobileRendering) {
  931.             window.mobileRender = mobileRendering;
  932.             window.log('Mobile rendering set to: ' + window.mobileRender);
  933.             userInterface.savePreference('mobileRender', window.mobileRender);
  934.             // Set render mode
  935.             if (window.mobileRender) {
  936.                 canvas.setBackground(
  937.                     'data:image/gif;base64,R0lGODlhAQABAIAAAAUEBAAAACwAAAAAAQABAAACAkQBADs');
  938.                 window.render_mode = 1;
  939.                 window.want_quality = 0;
  940.                 window.high_quality = false;
  941.             } else {
  942.                 canvas.setBackground();
  943.                 window.render_mode = 2;
  944.                 window.want_quality = 1;
  945.                 window.high_quality = true;
  946.             }
  947.         },
  948.  
  949.         onPrefChange: function() {
  950.             // Set static display options here.
  951.             var oContent = [];
  952.             var ht = userInterface.handleTextColor;
  953.  
  954.             oContent.push('version: ' + GM_info.script.version);
  955.             oContent.push('[T] Enable / disable bot: ' + ht(bot.isBotEnabled));
  956.             oContent.push('[C] collision detection on/off: ' + ht(window.collisionDetection));
  957.             oContent.push('[O] Mobile version on/off: ' + ht(window.mobileRender));
  958.             oContent.push('[A/S] Radius multiplier (S-less, A-Greater): ' + window.collisionRadiusMultiplier);
  959.             oContent.push('[I] Auto spawn on / off: ' + ht(window.autoRespawn));
  960.             oContent.push('[Y] Visual debugging on / off: ' + ht(window.visualDebugging));
  961.             oContent.push('[U] debug log: ' + ht(window.logDebugging));
  962.             oContent.push('[Wheel(mouse)] Zoom (zoom in on top, zoom out down');
  963.             oContent.push('[Z] Reset Zoom.');
  964.             oContent.push('[ESC] Respawn');
  965.             oContent.push('[Q] Exit to menu.');
  966.  
  967.             userInterface.overlays.prefOverlay.innerHTML = oContent.join('<br/>');
  968.         },
  969.  
  970.         onFrameUpdate: function() {
  971.             // Botstatus overlay
  972.             var oContent = [];
  973.  
  974.             if (window.playing && window.snake !== null) {
  975.                 oContent.push('fps: ' + userInterface.framesPerSecond.fps);
  976.  
  977.                 // Display the X and Y of the snake
  978.                 oContent.push('x: ' +
  979.                     (Math.round(window.snake.xx) || 0) + ' y: ' +
  980.                     (Math.round(window.snake.yy) || 0));
  981.  
  982.                 if (window.goalCoordinates) {
  983.                     oContent.push('target');
  984.                     oContent.push('x: ' + window.goalCoordinates.x + ' y: ' +
  985.                         window.goalCoordinates.y);
  986.                     if (window.goalCoordinates.sz) {
  987.                         oContent.push('sz: ' + window.goalCoordinates.sz);
  988.                     }
  989.                 }
  990.  
  991.                 if (window.bso !== undefined && userInterface.overlays.serverOverlay.innerHTML !==
  992.                     window.bso.ip + ':' + window.bso.po) {
  993.                     userInterface.overlays.serverOverlay.innerHTML =
  994.                         window.bso.ip + ':' + window.bso.po;
  995.                 }
  996.             }
  997.  
  998.             userInterface.overlays.botOverlay.innerHTML = oContent.join('<br/>');
  999.  
  1000.  
  1001.             if (window.playing && window.visualDebugging) {
  1002.                 // Only draw the goal when a bot has a goal.
  1003.                 if (window.goalCoordinates && bot.isBotEnabled) {
  1004.                     var headCoord = {x: window.snake.xx, y: window.snake.yy};
  1005.                     canvas.drawLine(
  1006.                         headCoord,
  1007.                         window.goalCoordinates,
  1008.                         'green');
  1009.                     canvas.drawCircle(window.goalCoordinates, 'red', true);
  1010.                 }
  1011.             }
  1012.         },
  1013.  
  1014.         oefTimer: function() {
  1015.             var start = Date.now();
  1016.             canvas.maintainZoom();
  1017.             original_oef();
  1018.             original_redraw();
  1019.  
  1020.             if (window.playing && bot.isBotEnabled && window.snake !== null) {
  1021.                 window.onmousemove = function() { };
  1022.                 bot.isBotRunning = true;
  1023.                 bot.collisionLoop();
  1024.             } else if (bot.isBotEnabled && bot.isBotRunning) {
  1025.                 bot.isBotRunning = false;
  1026.                 if (window.lastscore && window.lastscore.childNodes[1]) {
  1027.                     bot.scores.push(parseInt(window.lastscore.childNodes[1].innerHTML));
  1028.                     bot.scores.sort(function(a, b) { return b - a; });
  1029.                     userInterface.updateStats();
  1030.                 }
  1031.  
  1032.                 if (window.autoRespawn) {
  1033.                     window.connect();
  1034.                 }
  1035.             }
  1036.  
  1037.             if (!bot.isBotEnabled || bot.isBotRunning) {
  1038.                 window.onmousemove = original_onmousemove;
  1039.             }
  1040.  
  1041.             userInterface.onFrameUpdate();
  1042.             setTimeout(userInterface.oefTimer, (1000 / TARGET_FPS) - (Date.now() - start));
  1043.         },
  1044.  
  1045.         // Quit to menu
  1046.         quit: function() {
  1047.             if (window.playing && window.resetGame) {
  1048.                 window.want_close_socket = true;
  1049.                 window.dead_mtm = 0;
  1050.                 if (window.play_btn) {
  1051.                     window.play_btn.setEnabled(true);
  1052.                 }
  1053.                 window.resetGame();
  1054.             }
  1055.         },
  1056.  
  1057.         // Update the relation between the screen and the canvas.
  1058.         onresize: function() {
  1059.             window.resize();
  1060.             // Canvas different size from the screen (often bigger).
  1061.             canvas.canvasRatio = {
  1062.                 x: window.mc.width / window.ww,
  1063.                 y: window.mc.height / window.hh
  1064.             };
  1065.         },
  1066.  
  1067.         handleTextColor: function(enabled) {
  1068.             return '<span style=\"color:' +
  1069.                 (enabled ? 'green;\">enabled' : 'red;\">disabled') + '</span>';
  1070.         }
  1071.     };
  1072. })();
  1073.  
  1074. // Main
  1075. (function() {
  1076.     window.play_btn.btnf.addEventListener('click', userInterface.playButtonClickListener);
  1077.     document.onkeydown = userInterface.onkeydown;
  1078.     window.onmousedown = userInterface.onmousedown;
  1079.     window.addEventListener('mouseup', userInterface.onmouseup);
  1080.     window.onresize = userInterface.onresize;
  1081.  
  1082.      // Hide top score
  1083.     userInterface.hideTop();
  1084.  
  1085.     // Overlays
  1086.     userInterface.initOverlays();
  1087.  
  1088.     // Load preferences
  1089.     userInterface.loadPreference('logDebugging', true);
  1090.     userInterface.loadPreference('visualDebugging', true);
  1091.     userInterface.loadPreference('autoRespawn', true);
  1092.     userInterface.loadPreference('mobileRender', true);
  1093.     userInterface.loadPreference('collisionDetection', true);
  1094.     userInterface.loadPreference('collisionRadiusMultiplier', 10);
  1095.     window.nick.value = userInterface.loadPreference('savedNick', 'Slither.io Trainer Hack');
  1096.  
  1097.     // Listener for mouse wheel scroll - used for setZoom function
  1098.     document.body.addEventListener('mousewheel', canvas.setZoom);
  1099.     document.body.addEventListener('DOMMouseScroll', canvas.setZoom);
  1100.  
  1101.     // Set render mode
  1102.     if (window.mobileRender) {
  1103.         userInterface.toggleMobileRendering(false);
  1104.     } else {
  1105.         userInterface.toggleMobileRendering(true);
  1106.     }
  1107.  
  1108.     // Unblocks all skins without the need for FB sharing.
  1109.     window.localStorage.setItem('edttsg', '1');
  1110.  
  1111.     // Remove social
  1112.     window.social.remove();
  1113.  
  1114.     // Maintain fps
  1115.     setInterval(userInterface.framesPerSecond.fpsTimer, 80);
  1116.  
  1117.     // Start!
  1118.     userInterface.oefTimer();
  1119. })();