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bot.user.js
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bot.user.js
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/*
Copyright (c) 2016 Ermiya Eskandary & Théophile Cailliau and other contributors
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
// ==UserScript==
// @name Slither.io-bot-custom
// @namespace http://slither.io/
// @version 1.2.9
// @description Slither.io bot
// @author Ermiya Eskandary & Théophile Cailliau
// @match http://slither.io/
// @grant none
// ==/UserScript==
/*
Override bot options here
Uncomment variables you wish to change from their default values
Changes you make here will be kept between script versions
*/
var customBotOptions = {
// target fps
// targetFps: 30,
// size of arc for collisionAngles
// arcSize: Math.PI / 8,
// radius multiple for circle intersects
// radiusMult: 10,
// food cluster size to trigger acceleration
// foodAccelSize: 60,
// maximum angle of food to trigger acceleration
// foodAccelAngle: Math.PI / 3,
// how many frames per food check
// foodFrames: 4,
// round food cluster size up to the nearest
// foodRoundSize: 5,
// round food angle up to nearest for angle difference scoring
// foodRoundAngle: Math.PI / 8,
// food clusters at or below this size won't be considered
// if there is a collisionAngle
// foodSmallSize: 10,
// angle or higher where enemy heady is considered in the rear
// rearHeadAngle: 3 * Math.PI / 4,
// attack emeny rear head at this angle
// rearHeadDir: Math.PI / 2,
// quick radius toggle size in approach mode
// radiusApproachSize: 5,
// quick radius toggle size in avoid mode
// radiusAvoidSize: 25,
// uncomment to quickly revert to the default options
// if you update the script while this is active,
// you will lose your custom options
// useDefaults: true
};
// Custom logging function - disabled by default
window.log = function() {
if (window.logDebugging) {
console.log.apply(console, arguments);
}
};
var canvasUtil = window.canvasUtil = (function() {
return {
// Ratio of screen size divided by canvas size.
canvasRatio: {
x: window.mc.width / window.ww,
y: window.mc.height / window.hh
},
// Set direction of snake towards the virtual mouse coordinates
setMouseCoordinates: function(point) {
window.xm = point.x;
window.ym = point.y;
},
// Convert snake-relative coordinates to absolute screen coordinates.
mouseToScreen: function(point) {
var screenX = point.x + (window.ww / 2);
var screenY = point.y + (window.hh / 2);
return {
x: screenX,
y: screenY
};
},
// Convert screen coordinates to canvas coordinates.
screenToCanvas: function(point) {
var canvasX = window.csc *
(point.x * canvasUtil.canvasRatio.x) - parseInt(window.mc.style.left);
var canvasY = window.csc *
(point.y * canvasUtil.canvasRatio.y) - parseInt(window.mc.style.top);
return {
x: canvasX,
y: canvasY
};
},
// Convert map coordinates to mouse coordinates.
mapToMouse: function(point) {
var mouseX = (point.x - window.snake.xx) * window.gsc;
var mouseY = (point.y - window.snake.yy) * window.gsc;
return {
x: mouseX,
y: mouseY
};
},
// Map coordinates to Canvas coordinates.
mapToCanvas: function(point) {
var c = canvasUtil.mapToMouse(point);
c = canvasUtil.mouseToScreen(c);
c = canvasUtil.screenToCanvas(c);
return c;
},
// Map to Canvas coordinates conversion for drawing circles.
circleMapToCanvas: function(circle) {
var newCircle = canvasUtil.mapToCanvas(circle);
return canvasUtil.circle(
newCircle.x,
newCircle.y,
// Radius also needs to scale by .gsc
circle.radius * window.gsc
);
},
// Constructor for point type
point: function(x, y) {
var p = {
x: Math.round(x),
y: Math.round(y)
};
return p;
},
// Constructor for rect type
rect: function(x, y, w, h) {
var r = {
x: Math.round(x),
y: Math.round(y),
width: Math.round(w),
height: Math.round(h)
};
return r;
},
// Constructor for circle type
circle: function(x, y, r) {
var c = {
x: Math.round(x),
y: Math.round(y),
radius: Math.round(r)
};
return c;
},
// Fast atan2
fastAtan2: function(y, x) {
const QPI = Math.PI / 4;
const TQPI = 3 * Math.PI / 4;
var r = 0.0;
var angle = 0.0;
var abs_y = Math.abs(y) + 1e-10;
if (x < 0) {
r = (x + abs_y) / (abs_y - x);
angle = TQPI;
} else {
r = (x - abs_y) / (x + abs_y);
angle = QPI;
}
angle += (0.1963 * r * r - 0.9817) * r;
if (y < 0) {
return -angle;
}
return angle;
},
// Adjusts zoom in response to the mouse wheel.
setZoom: function(e) {
// Scaling ratio
if (window.gsc) {
window.gsc *= Math.pow(0.9, e.wheelDelta / -120 || e.detail / 2 || 0);
window.desired_gsc = window.gsc;
}
},
// Restores zoom to the default value.
resetZoom: function() {
window.gsc = 0.9;
window.desired_gsc = 0.9;
},
// Maintains Zoom
maintainZoom: function() {
if (window.desired_gsc !== undefined) {
window.gsc = window.desired_gsc;
}
},
// Sets background to the given image URL.
// Defaults to slither.io's own background.
setBackground: function(url) {
url = typeof url !== 'undefined' ? url : '/s/bg45.jpg';
window.ii.src = url;
},
// Draw a rectangle on the canvas.
drawRect: function(rect, color, fill, alpha) {
if (alpha === undefined) alpha = 1;
var context = window.mc.getContext('2d');
var lc = canvasUtil.mapToCanvas({
x: rect.x,
y: rect.y
});
context.save();
context.globalAlpha = alpha;
context.strokeStyle = color;
context.rect(lc.x, lc.y, rect.width * window.gsc, rect.height * window.gsc);
context.stroke();
if (fill) {
context.fillStyle = color;
context.fill();
}
context.restore();
},
// Draw a circle on the canvas.
drawCircle: function(circle, color, fill, alpha) {
if (alpha === undefined) alpha = 1;
if (circle.radius === undefined) circle.radius = 5;
var context = window.mc.getContext('2d');
var drawCircle = canvasUtil.circleMapToCanvas(circle);
context.save();
context.globalAlpha = alpha;
context.beginPath();
context.strokeStyle = color;
context.arc(drawCircle.x, drawCircle.y, drawCircle.radius, 0, Math.PI * 2);
context.stroke();
if (fill) {
context.fillStyle = color;
context.fill();
}
context.restore();
},
// Draw an angle.
// @param {number} start -- where to start the angle
// @param {number} angle -- width of the angle
// @param {String|CanvasGradient|CanvasPattern} color
// @param {boolean} fill
// @param {number} alpha
drawAngle: function(start, angle, color, fill, alpha) {
if (alpha === undefined) alpha = 0.6;
var context = window.mc.getContext('2d');
context.save();
context.globalAlpha = alpha;
context.beginPath();
context.moveTo(window.mc.width / 2, window.mc.height / 2);
context.arc(window.mc.width / 2, window.mc.height / 2, window.gsc * 100, start, angle);
context.lineTo(window.mc.width / 2, window.mc.height / 2);
context.closePath();
context.stroke();
if (fill) {
context.fillStyle = color;
context.fill();
}
context.restore();
},
// Draw a line on the canvas.
drawLine: function(p1, p2, color, width) {
if (width === undefined) width = 5;
var context = window.mc.getContext('2d');
var dp1 = canvasUtil.mapToCanvas(p1);
var dp2 = canvasUtil.mapToCanvas(p2);
context.save();
context.beginPath();
context.lineWidth = width * window.gsc;
context.strokeStyle = color;
context.moveTo(dp1.x, dp1.y);
context.lineTo(dp2.x, dp2.y);
context.stroke();
context.restore();
},
// Given the start and end of a line, is point left.
isLeft: function(start, end, point) {
return ((end.x - start.x) * (point.y - start.y) -
(end.y - start.y) * (point.x - start.x)) > 0;
},
// Get distance squared
getDistance2: function(x1, y1, x2, y2) {
var distance2 = Math.pow(x1 - x2, 2) + Math.pow(y1 - y2, 2);
return distance2;
},
getDistance2FromSnake: function(point) {
point.distance = canvasUtil.getDistance2(window.snake.xx, window.snake.yy,
point.xx, point.yy);
return point;
},
// Check if point in Rect
pointInRect: function(point, rect) {
if (rect.x <= point.x && rect.y <= point.y &&
rect.x + rect.width >= point.x && rect.y + rect.height >= point.y) {
return true;
}
return false;
},
// Check if circles intersect
circleIntersect: function(circle1, circle2) {
var bothRadii = circle1.radius + circle2.radius;
var dx = circle1.x - circle2.x;
var dy = circle1.y - circle2.y;
// Pretends the circles are squares for a quick collision check.
// If it collides, do the more expensive circle check.
if (dx + bothRadii > 0 && dy + bothRadii > 0 &&
dx - bothRadii < 0 && dy - bothRadii < 0) {
var distance2 = canvasUtil.getDistance2(circle1.x, circle1.y, circle2.x, circle2.y);
if (distance2 < bothRadii * bothRadii) {
if (window.visualDebugging) {
var collisionPointCircle = canvasUtil.circle(
((circle1.x * circle2.radius) + (circle2.x * circle1.radius)) /
bothRadii,
((circle1.y * circle2.radius) + (circle2.y * circle1.radius)) /
bothRadii,
5
);
canvasUtil.drawCircle(circle2, 'red', true);
canvasUtil.drawCircle(collisionPointCircle, 'cyan', true);
}
return true;
}
}
return false;
},
//////////////////////// custom functions ///////////
//TODO: make this function(sector, circle) instead of pt for better detection
sectorIntersect: function(sector, pt){
var dx = pt.xx - sector.O.x;
var dy = pt.yy - sector.O.y;
//check distance
var distToPt = Math.sqrt(canvasUtil.getDistance2(sector.O.x, sector.O.y, pt.xx, pt.yy));
if(distToPt > bot.speedMult * bot.opt.radiusMult/2 * bot.snakeRadius) {
return false;
} else {
//check ang
var ptAng = canvasUtil.fastAtan2(dy,dx);
if (window.snake.ang > ptAng &&
window.snake.ang - ptAng < Math.PI/6) {
return true;
} else if (window.snake.ang < ptAng &&
ptAng - window.snake.ang < Math.PI/6){
return true;
}
//passes angle check, no collision
return false;
}
}
///////////////////// end custom functions ////////////
};
})();
var bot = window.bot = (function() {
return {
isCustomBot: false,
isBotRunning: false,
isBotEnabled: true,
lookForFood: false,
collisionPoints: [],
collisionAngles: [],
scores: [],
foodTimeout: undefined,
sectorBoxSide: 0,
defaultAccel: 0,
sectorBox: {},
currentFood: {},
opt: {
// These are the bot's default options
// If you wish to customise these, use
// customBotOptions above
targetFps: 30,
arcSize: Math.PI / 8,
radiusMult: 10,
foodAccelSize: 60,
foodAccelAngle: Math.PI / 3,
foodFrames: 4,
foodRoundSize: 5,
foodRoundAngle: Math.PI / 8,
foodSmallSize: 10,
rearHeadAngle: 3 * Math.PI / 4,
rearHeadDir: Math.PI / 2,
radiusApproachSize: 5,
radiusAvoidSize: 25
},
MID_X: 0,
MID_Y: 0,
MAP_R: 0,
getSnakeWidth: function(sc) {
if (sc === undefined) sc = window.snake.sc;
return Math.round(sc * 29.0);
},
quickRespawn: function() {
window.dead_mtm = 0;
window.login_fr = 0;
bot.isBotRunning = false;
window.forcing = true;
window.connect();
window.forcing = false;
},
// angleBetween - get the smallest angle between two angles (0-pi)
angleBetween: function(a1, a2) {
var r1 = 0.0;
var r2 = 0.0;
r1 = (a1 - a2) % Math.PI;
r2 = (a2 - a1) % Math.PI;
return r1 < r2 ? -r1 : r2;
},
// Avoid headPoint
avoidHeadPoint: function(collisionPoint) {
var cehang = canvasUtil.fastAtan2(
collisionPoint.yy - window.snake.yy, collisionPoint.xx - window.snake.xx);
var diff = bot.angleBetween(window.snake.ehang, cehang);
if (Math.abs(diff) > bot.opt.rearHeadAngle) {
var dir = diff > 0 ? -bot.opt.rearHeadDir : bot.opt.rearHeadDir;
bot.changeHeading(dir);
} else {
bot.avoidCollisionPoint(collisionPoint);
}
},
// Change heading by ang
// +0-pi turn left
// -0-pi turn right
changeHeading: function(angle) {
var heading = {
x: window.snake.xx + 500 * bot.cos,
y: window.snake.yy + 500 * bot.sin
};
var cos = Math.cos(-angle);
var sin = Math.sin(-angle);
window.goalCoordinates = {
x: Math.round(
cos * (heading.x - window.snake.xx) -
sin * (heading.y - window.snake.yy) + window.snake.xx),
y: Math.round(
sin * (heading.x - window.snake.xx) +
cos * (heading.y - window.snake.yy) + window.snake.yy)
};
canvasUtil.setMouseCoordinates(canvasUtil.mapToMouse(window.goalCoordinates));
},
// Avoid collision point by ang
// ang radians <= Math.PI (180deg)
avoidCollisionPoint: function(collisionPoint, ang) {
if (ang === undefined || ang > Math.PI) {
ang = Math.PI;
}
var end = {
x: window.snake.xx + 2000 * bot.cos,
y: window.snake.yy + 2000 * bot.sin
};
if (window.visualDebugging) {
canvasUtil.drawLine({
x: window.snake.xx,
y: window.snake.yy
},
end,
'orange', 5);
canvasUtil.drawLine({
x: window.snake.xx,
y: window.snake.yy
}, {
x: collisionPoint.xx,
y: collisionPoint.yy
},
'red', 5);
}
var cos = Math.cos(ang);
var sin = Math.sin(ang);
if (canvasUtil.isLeft({
x: window.snake.xx,
y: window.snake.yy
}, end, {
x: collisionPoint.xx,
y: collisionPoint.yy
})) {
sin = -sin;
}
window.goalCoordinates = {
x: Math.round(
cos * (collisionPoint.xx - window.snake.xx) -
sin * (collisionPoint.yy - window.snake.yy) + window.snake.xx),
y: Math.round(
sin * (collisionPoint.xx - window.snake.xx) +
cos * (collisionPoint.yy - window.snake.yy) + window.snake.yy)
};
canvasUtil.setMouseCoordinates(canvasUtil.mapToMouse(window.goalCoordinates));
},
// Sorting by property 'distance'
sortDistance: function(a, b) {
return a.distance - b.distance;
},
// get collision angle index, expects angle +/i 0 to Math.PI
getAngleIndex: function(angle) {
const ARCSIZE = bot.opt.arcSize;
var index;
if (angle < 0) {
angle += 2 * Math.PI;
}
index = Math.round(angle * (1 / ARCSIZE));
if (index === (2 * Math.PI) / ARCSIZE) {
return 0;
}
return index;
},
// Add to collisionAngles if distance is closer
addCollisionAngle: function(sp) {
var ang = canvasUtil.fastAtan2(
Math.round(sp.yy - window.snake.yy),
Math.round(sp.xx - window.snake.xx));
var aIndex = bot.getAngleIndex(ang);
var actualDistance = Math.round(Math.pow(
Math.sqrt(sp.distance) - sp.radius, 2));
if (bot.collisionAngles[aIndex] === undefined) {
bot.collisionAngles[aIndex] = {
x: Math.round(sp.xx),
y: Math.round(sp.yy),
ang: ang,
snake: sp.snake,
distance: actualDistance
};
} else if (bot.collisionAngles[aIndex].distance > sp.distance) {
bot.collisionAngles[aIndex].x = Math.round(sp.xx);
bot.collisionAngles[aIndex].y = Math.round(sp.yy);
bot.collisionAngles[aIndex].ang = ang;
bot.collisionAngles[aIndex].snake = sp.snake;
bot.collisionAngles[aIndex].distance = actualDistance;
}
},
// Get closest collision point per snake.
getCollisionPoints: function() {
var scPoint;
bot.collisionPoints = [];
bot.collisionAngles = [];
for (var snake = 0, ls = window.snakes.length; snake < ls; snake++) {
scPoint = undefined;
if (window.snakes[snake].id !== window.snake.id &&
window.snakes[snake].alive_amt === 1) {
scPoint = {
xx: window.snakes[snake].xx,
yy: window.snakes[snake].yy,
snake: snake,
radius: bot.getSnakeWidth(window.snakes[snake].sc) / 2
};
canvasUtil.getDistance2FromSnake(scPoint);
bot.addCollisionAngle(scPoint);
if (window.visualDebugging) {
canvasUtil.drawCircle(canvasUtil.circle(
scPoint.xx,
scPoint.yy,
scPoint.radius),
'red', false);
}
for (var pts = 0, lp = window.snakes[snake].pts.length; pts < lp; pts++) {
if (!window.snakes[snake].pts[pts].dying &&
canvasUtil.pointInRect({
x: window.snakes[snake].pts[pts].xx,
y: window.snakes[snake].pts[pts].yy
}, bot.sectorBox)
) {
var collisionPoint = {
xx: window.snakes[snake].pts[pts].xx,
yy: window.snakes[snake].pts[pts].yy,
snake: snake,
radius: bot.getSnakeWidth(window.snakes[snake].sc) / 2
};
if (window.visualDebugging && true === false) {
canvasUtil.drawCircle(canvasUtil.circle(
collisionPoint.xx,
collisionPoint.yy,
collisionPoint.radius),
'#00FF00', false);
}
canvasUtil.getDistance2FromSnake(collisionPoint);
bot.addCollisionAngle(collisionPoint);
if (scPoint === undefined ||
scPoint.distance > collisionPoint.distance) {
scPoint = collisionPoint;
}
}
}
}
if (scPoint !== undefined) {
bot.collisionPoints.push(scPoint);
if (window.visualDebugging) {
canvasUtil.drawCircle(canvasUtil.circle(
scPoint.xx,
scPoint.yy,
scPoint.radius
), 'red', false);
}
}
}
// WALL
if (canvasUtil.getDistance2(bot.MID_X, bot.MID_Y, window.snake.xx, window.snake.yy) >
Math.pow(bot.MAP_R - 1000, 2)) {
var midAng = canvasUtil.fastAtan2(
window.snake.yy - bot.MID_X, window.snake.xx - bot.MID_Y);
scPoint = {
xx: bot.MID_X + bot.MAP_R * Math.cos(midAng),
yy: bot.MID_Y + bot.MAP_R * Math.sin(midAng),
snake: -1,
radius: bot.snakeWidth
};
canvasUtil.getDistance2FromSnake(scPoint);
bot.collisionPoints.push(scPoint);
bot.addCollisionAngle(scPoint);
if (window.visualDebugging) {
canvasUtil.drawCircle(canvasUtil.circle(
scPoint.xx,
scPoint.yy,
scPoint.radius
), 'yellow', false);
}
}
bot.collisionPoints.sort(bot.sortDistance);
if (window.visualDebugging) {
for (var i = 0; i < bot.collisionAngles.length; i++) {
if (bot.collisionAngles[i] !== undefined) {
canvasUtil.drawLine({
x: window.snake.xx,
y: window.snake.yy
}, {
x: bot.collisionAngles[i].x,
y: bot.collisionAngles[i].y
},
'#99ffcc', 2);
}
}
}
},
// Checks to see if you are going to collide with anything in the collision detection radius
checkCollision: function() {
var headCircle = canvasUtil.circle(
window.snake.xx, window.snake.yy,
bot.speedMult * bot.opt.radiusMult / 2 * bot.snakeRadius
);
var fullHeadCircle = canvasUtil.circle(
window.snake.xx, window.snake.yy,
bot.opt.radiusMult * bot.snakeRadius
);
if (window.visualDebugging) {
canvasUtil.drawCircle(fullHeadCircle, 'red');
canvasUtil.drawCircle(headCircle, 'blue', false);
}
bot.getCollisionPoints();
if (bot.collisionPoints.length === 0) return false;
for (var i = 0; i < bot.collisionPoints.length; i++) {
var collisionCircle = canvasUtil.circle(
bot.collisionPoints[i].xx,
bot.collisionPoints[i].yy,
bot.collisionPoints[i].radius
);
if (canvasUtil.circleIntersect(headCircle, collisionCircle)) {
window.setAcceleration(bot.defaultAccel);
bot.avoidCollisionPoint(bot.collisionPoints[i]);
return true;
}
// snake -1 is special case for non snake object.
if (bot.collisionPoints[i].snake !== -1) {
var enemyHeadCircle = canvasUtil.circle(
window.snakes[bot.collisionPoints[i].snake].xx,
window.snakes[bot.collisionPoints[i].snake].yy,
bot.collisionPoints[i].radius
);
if (canvasUtil.circleIntersect(fullHeadCircle, enemyHeadCircle)) {
if (window.snakes[bot.collisionPoints[i].snake].sp > 10) {
window.setAcceleration(1);
} else {
window.setAcceleration(bot.defaultAccel);
}
bot.avoidHeadPoint({
xx: window.snakes[bot.collisionPoints[i].snake].xx,
yy: window.snakes[bot.collisionPoints[i].snake].yy
});
return true;
}
}
}
window.setAcceleration(bot.defaultAccel);
return false;
},
sortScore: function(a, b) {
return b.score - a.score;
},
// Round angle difference up to nearest foodRoundAngle degrees.
// Round food up to nearest foodRoundsz, square for distance^2
scoreFood: function(f) {
f.score = Math.pow(Math.ceil(f.sz / bot.opt.foodRoundSize) * bot.opt.foodRoundSize, 2) /
f.distance / (Math.ceil(f.da / bot.opt.foodRoundAngle) * bot.opt.foodRoundAngle);
},
computeFoodGoal: function() {
var foodClusters = [];
var foodGetIndex = [];
var fi = 0;
var sw = bot.snakeWidth;
for (var i = 0; i < window.foods.length && window.foods[i] !== null; i++) {
var a;
var da;
var distance;
var sang = window.snake.ehang;
var f = window.foods[i];
if (!f.eaten &&
!(
canvasUtil.circleIntersect(
canvasUtil.circle(f.xx, f.yy, 2),
bot.sidecircle_l) ||
canvasUtil.circleIntersect(
canvasUtil.circle(f.xx, f.yy, 2),
bot.sidecircle_r))) {
var cx = Math.round(Math.round(f.xx / sw) * sw);
var cy = Math.round(Math.round(f.yy / sw) * sw);
var csz = Math.round(f.sz);
if (foodGetIndex[cx + '|' + cy] === undefined) {
foodGetIndex[cx + '|' + cy] = fi;
a = canvasUtil.fastAtan2(cy - window.snake.yy, cx - window.snake.xx);
da = Math.min(
(2 * Math.PI) - Math.abs(a - sang), Math.abs(a - sang));
distance = Math.round(
canvasUtil.getDistance2(cx, cy, window.snake.xx, window.snake.yy));
foodClusters[fi] = {
x: cx,
y: cy,
a: a,
da: da,
sz: csz,
distance: distance,
score: 0.0
};
fi++;
} else {
foodClusters[foodGetIndex[cx + '|' + cy]].sz += csz;
}
}
}
foodClusters.forEach(bot.scoreFood);
foodClusters.sort(bot.sortScore);
for (i = 0; i < foodClusters.length; i++) {
var aIndex = bot.getAngleIndex(foodClusters[i].a);
if (bot.collisionAngles[aIndex] === undefined ||
(Math.sqrt(bot.collisionAngles[aIndex].distance) -
bot.snakeRadius * bot.opt.radiusMult / 2 >
Math.sqrt(foodClusters[i].distance) &&
foodClusters[i].sz > bot.opt.foodSmallSize)
) {
bot.currentFood = foodClusters[i];
return;
}
}
bot.currentFood = {
x: bot.MID_X,
y: bot.MID_Y
};
},
foodAccel: function() {
var aIndex = 0;
if (bot.currentFood && bot.currentFood.sz > bot.opt.foodAccelSize) {
aIndex = bot.getAngleIndex(bot.currentFood.a);
if (
bot.collisionAngles[aIndex] && bot.collisionAngles[aIndex].distance >
bot.currentFood.distance + bot.snakeWidth * bot.opt.radiusMult &&
bot.currentFood.da < bot.opt.foodAccelAngle) {
return 1;
}
if (bot.collisionAngles[aIndex] === undefined) {
return 1;
}
}
return bot.defaultAccel;
},
every: function() {
bot.MID_X = window.grd;
bot.MID_Y = window.grd;
bot.MAP_R = window.grd * 0.98;
bot.sectorBoxSide = Math.floor(Math.sqrt(window.sectors.length)) * window.sector_size;
bot.sectorBox = canvasUtil.rect(
window.snake.xx - (bot.sectorBoxSide / 2),
window.snake.yy - (bot.sectorBoxSide / 2),
bot.sectorBoxSide, bot.sectorBoxSide);
// if (window.visualDebugging) canvasUtil.drawRect(bot.sectorBox, '#c0c0c0', true, 0.1);
bot.cos = Math.cos(window.snake.ang);
bot.sin = Math.sin(window.snake.ang);
bot.speedMult = window.snake.sp / 5.78;
bot.snakeRadius = bot.getSnakeWidth() / 2;
bot.snakeWidth = bot.getSnakeWidth();
bot.sidecircle_r = canvasUtil.circle(
window.snake.lnp.xx -
((window.snake.lnp.yy + bot.sin * bot.snakeWidth) -
window.snake.lnp.yy),
window.snake.lnp.yy +
((window.snake.lnp.xx + bot.cos * bot.snakeWidth) -
window.snake.lnp.xx),
bot.snakeWidth * bot.speedMult
);
bot.sidecircle_l = canvasUtil.circle(
window.snake.lnp.xx +
((window.snake.lnp.yy + bot.sin * bot.snakeWidth) -
window.snake.lnp.yy),
window.snake.lnp.yy -
((window.snake.lnp.xx + bot.cos * bot.snakeWidth) -
window.snake.lnp.xx),
bot.snakeWidth * bot.speedMult
);
},
// Main bot
go: function() {
bot.every();
if (bot.checkCollision()) {
bot.lookForFood = false;
if (bot.foodTimeout) {
window.clearTimeout(bot.foodTimeout);
bot.foodTimeout = window.setTimeout(
bot.foodTimer, 1000 / bot.opt.targetFps * bot.opt.foodFrames);
}
} else {
bot.lookForFood = true;
if (bot.foodTimeout === undefined) {
bot.foodTimeout = window.setTimeout(
bot.foodTimer, 1000 / bot.opt.targetFps * bot.opt.foodFrames);
}
window.setAcceleration(bot.foodAccel());
}
},
//////////////// custom functions ///////
//follow head of nearest enemy plus some offset to get before enemy's head
customTrack: function(pt){
coordinates = {
x: pt.xx + Math.cos(pt.ang)*100, //TODO: add snake.sc into the formula
y: pt.yy + Math.sin(pt.ang)*100,
radius: pt.radius
};
if (window.visualDebugging) {
canvasUtil.drawCircle(canvasUtil.circle(
coordinates.x,
coordinates.y,
coordinates.radius),
'yellow', false);
}
canvasUtil.setMouseCoordinates(canvasUtil.mapToMouse(coordinates));
},
testTrack: function(){
coordinates = {
x: window.snake.xx + Math.cos(window.snake.ang)*100,
y: window.snake.yy + Math.sin(window.snake.ang)*100,
radius: bot.getSnakeWidth(window.snake.sc)/2
};
if (window.visualDebugging) {
canvasUtil.drawCircle(canvasUtil.circle(
coordinates.x,
coordinates.y,
coordinates.radius),
'yellow', false);
}
},
getSnakeHeads: function() {
bot.snakeHeads = [];
for (var snake = 0, ls = window.snakes.length; snake < ls; snake ++) {
enemyHeadPoint = undefined;
if (window.snakes[snake].id !== window.snake.id &&
window.snakes[snake].alive_amt === 1) {
enemyHeadPoint = {
xx: window.snakes[snake].xx,
yy: window.snakes[snake].yy,
ang: window.snakes[snake].ang,
snake: snake,
radius: bot.getSnakeWidth(window.snakes[snake].sc)/2
};
canvasUtil.getDistance2FromSnake(enemyHeadPoint);
}
if (enemyHeadPoint !== undefined) {
bot.snakeHeads.push(enemyHeadPoint);
}
}
bot.snakeHeads.sort(bot.sortDistance);
},
checkSectorCollision: function() {
bot.getCollisionPoints();
if(bot.collisionPoints.length === 0) return false;
var sector = {
O: { x: window.snake.xx,
y: window.snake.yy
},
A: { x: window.snake.xx + Math.cos(window.snake.ang + Math.PI/6)* bot.speedMult * bot.opt.radiusMult / 2 * bot.snakeRadius,
y: window.snake.yy + Math.sin(window.snake.ang + Math.PI/6)* bot.speedMult * bot.opt.radiusMult / 2 * bot.snakeRadius
},
B: { x: window.snake.xx + Math.cos(window.snake.ang - Math.PI/6)* bot.speedMult * bot.opt.radiusMult / 2 * bot.snakeRadius,
y: window.snake.yy + Math.sin(window.snake.ang - Math.PI/6)* bot.speedMult * bot.opt.radiusMult / 2 * bot.snakeRadius