diff --git a/js/bundle.js b/js/bundle.js
index 073aee4..9716655 100644
--- a/js/bundle.js
+++ b/js/bundle.js
@@ -472,7 +472,7 @@ eval("\nvar isArray_1 = __webpack_require__(/*! ../util/isArray */ 11);\nfunctio
 /***/ (function(module, exports, __webpack_require__) {
 
 "use strict";
-eval("\n\nObject.defineProperty(exports, \"__esModule\", {\n    value: true\n});\n\nvar _rxjs = __webpack_require__(/*! rxjs */ 14);\n\nvar _rxjs2 = _interopRequireDefault(_rxjs);\n\nvar _enums = __webpack_require__(/*! ./enums */ 16);\n\nvar _store = __webpack_require__(/*! ./store */ 22);\n\nvar _store2 = _interopRequireDefault(_store);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar random = {\n    bool: function bool(weight) {\n        return Math.random() < (weight || 0.5);\n    },\n    color: function color() {\n        return 'rgb(' + Math.floor(Math.random() * 255) + ', ' + Math.floor(Math.random() * 255) + ', ' + Math.floor(Math.random() * 255) + ')';\n    },\n    num: function num(min, max) {\n        return min + Math.round(Math.random() * max);\n    }\n};\n\n// ===== Constructor =====\n\nfunction Particle(parent, bounds, config, globalGrid) {\n    this.config = Object.assign({\n        bounds: bounds,\n        color: random.color(),\n        gridSize: 5,\n        randomize: false,\n        showMovementCircle: false,\n        showVisionGrid: false,\n        speed: 4,\n        visionRadius: 50\n    }, config);\n\n    this.grids = {\n        global: globalGrid || {},\n        vision: createVisionGrid(this.config)\n    };\n\n    this.arc = {\n        centerX: random.num(0, bounds.width),\n        centerY: random.num(0, bounds.height),\n        clockwise: random.bool(),\n        endX: 0,\n        endY: 0,\n        length: random.num(_enums.RAD.t90, _enums.RAD.t360),\n        radius: random.num(100, 200),\n        theta: random.num(_enums.RAD.t90, _enums.RAD.t360)\n    };\n\n    this.nodes = {\n        body: createBodyNode(this.config),\n        circle: undefined,\n        container: createContainerNode(this.config),\n        parent: parent,\n        vision: undefined,\n        visionGrid: undefined\n    };\n\n    this.nodes.container.appendChild(this.nodes.body);\n    parent.appendChild(this.nodes.container);\n\n    this.updateConfig(this.config);\n    this.nextFrame();\n};\n\n// ===== PROTOTYPE =====\n\nParticle.prototype.remove = function () {\n    this.nodes.parent.removeChild(this.nodes.container);\n    return this;\n};\n\nParticle.prototype.nextFrame = function () {\n    this.arc = updateArc(this.arc, this.config);\n    this.grids.vision = updateVisionGrid(this.arc, this.config, this.grids);\n\n    repaintContainer(this.nodes.container, this.arc);\n    repaintBody(this.nodes.body, this.arc);\n    repaintCircle(this.nodes.circle, this.arc);\n    repaintVision(this.nodes.vision, this.arc);\n    repaintVisionGrid(this.nodes.visionGrid, this.arc, this.grids);\n};\n\nParticle.prototype.updateConfig = function (config) {\n    Object.assign(this.config, config);\n\n    var _config = this.config,\n        showMovementCircle = _config.showMovementCircle,\n        showVisionGrid = _config.showVisionGrid;\n\n\n    if (showMovementCircle === true && this.nodes.circle === undefined) {\n        this.nodes.circle = createCircleNode(config);\n        this.nodes.container.appendChild(this.nodes.circle);\n    }\n\n    if (showMovementCircle === false && this.nodes.circle !== undefined) {\n        this.nodes.container.removeChild(this.nodes.circle);\n        delete this.nodes.circle;\n    }\n\n    if (showVisionGrid === true && this.nodes.vision === undefined) {\n        this.nodes.vision = createVisionNode(config, this.grids);\n        this.nodes.visionGrid = createVisionGridNodes(this.config, this.grids, this.nodes);\n        this.nodes.container.appendChild(this.nodes.vision);\n    }\n\n    if (showVisionGrid === false && this.nodes.vision !== undefined) {\n        this.nodes.container.removeChild(this.nodes.vision);\n        delete this.nodes.vision;\n        delete this.nodex.visionGrid;\n    }\n};\n\n// ===== CREATION =====\n\nfunction createBodyNode(config) {\n    var node = document.createElement('div');\n    node.className = 'particle-body';\n    node.style.backgroundColor = config.color;\n    return node;\n}\n\nfunction createCircleNode(config) {\n    if (config.showMovementCircle === false) {\n        return undefined;\n    }\n\n    var node = document.createElement('div');\n    node.className = 'particle-movement-circle';\n    node.style.borderColor = config.color;\n    return node;\n}\n\nfunction createContainerNode(config) {\n    var node = document.createElement('div');\n    node.className = 'particle-container';\n    return node;\n}\n\nfunction createVisionNode(config) {\n    if (config.showVisionGrid === false) {\n        return undefined;\n    }\n\n    var node = document.createElement('div');\n    node.className = 'particle-vision';\n\n    return node;\n}\n\nfunction createVisionGrid(config) {\n    if (config.showVisionGrid === false) {\n        return [];\n    }\n\n    var side = config.gridSize,\n        radius = config.visionRadius;\n\n    var r0 = radius;\n    var r1 = radius - side;\n\n    var points = [];\n\n    for (var x = -radius; x <= radius; x += side) {\n        for (var y = -radius; y <= radius; y += side) {\n            // Omit lower half\n            if (y < 0) {\n                continue;\n            }\n\n            // Include vision band\n            var r = Math.pow(Math.pow(x, 2) + Math.pow(y, 2), 0.5);\n            if (r > r0 || r < r1) {\n                continue;\n            }\n\n            var alpha = Math.atan(y / x);\n            if (x < 0) {\n                alpha = _enums.RAD.t180 + alpha;\n            }\n\n            points.push({ x: x, y: y, r: r, alpha: alpha, touch: false });\n        }\n    }\n\n    return points;\n}\n\nfunction createVisionGridNodes(config, grids, nodes) {\n    if (config.showVisionGrid === false) {\n        return undefined;\n    }\n\n    return grids.vision.reduce(function (acc, _ref) {\n        var x = _ref.x,\n            y = _ref.y;\n\n        var div = document.createElement('div');\n        div.className = 'particle-vision-dot';\n        div.style.backgroundColor = config.color;\n        nodes.vision.appendChild(div);\n\n        acc.push(div);\n\n        return acc;\n    }, []);\n}\n\n// ===== CALCULATIONS =====\n\nfunction updateArc(arc, _ref2) {\n    var bounds = _ref2.bounds,\n        randomize = _ref2.randomize,\n        speed = _ref2.speed;\n\n    // Randomly change radius and rotation direction.\n    if (arc.length <= 0) {\n        arc.length = random.num(_enums.RAD.t90, _enums.RAD.t360);\n\n        if (randomize === true) {\n            arc = moveArc(arc, random.num(100, 200));\n\n            if (random.bool(0.8)) {\n                arc.clockwise = !arc.clockwise;\n                arc = changeDirection(arc);\n            }\n        }\n    }\n\n    // Ensure constant velocity and theta between 0 and 2π.\n    var delta = speed / arc.radius;\n    arc.length -= delta;\n\n    arc.theta += arc.clockwise ? -delta : +delta;\n    arc.theta = arc.theta > 0 ? arc.theta % _enums.RAD.t360 : _enums.RAD.t360 + arc.theta;\n\n    arc.endX = arc.centerX + arc.radius * Math.cos(arc.theta);\n    arc.endY = arc.centerY - arc.radius * Math.sin(arc.theta);\n\n    // Overflow.\n    if (arc.endX < 0) {\n        arc.endX += bounds.width;\n        arc.centerX += bounds.width;\n    } else if (arc.endX > bounds.width) {\n        arc.endX -= bounds.width;\n        arc.centerX -= bounds.width;\n    }\n\n    if (arc.endY < 0) {\n        arc.endY += bounds.height;\n        arc.centerY += bounds.height;\n    } else if (arc.endY > bounds.height) {\n        arc.endY -= bounds.height;\n        arc.centerY -= bounds.height;\n    }\n\n    return arc;\n}\n\nfunction updateVisionGrid(arc, config, grids) {\n    var global = grids.global,\n        vision = grids.vision;\n\n\n    return vision.reduce(function (acc, point) {\n        var rad = arc.clockwise ? arc.theta - point.alpha : arc.theta - point.alpha + _enums.RAD.t180;\n\n        point.x = point.r * Math.cos(rad) + config.visionRadius;\n        point.y = -point.r * Math.sin(rad) + config.visionRadius;\n\n        // console.warn(point.alpha, point.alpha + arc.theta)\n\n        // const gridX = point.x - point.x % 5;\n        // const gridY = point.y - point.y % 5;\n\n        // point.touch = (global[gridX] !== undefined && global[gridX][gridY] !== undefined);\n\n        return acc.concat(point);\n    }, []);\n}\n\nfunction moveArc(arc, newRadius) {\n    var r0 = arc.radius;\n    var r1 = newRadius;\n\n    // Moves arc center to new radius while keeping theta constant.\n    arc.centerX -= (r1 - r0) * Math.cos(arc.theta);\n    arc.centerY += (r1 - r0) * Math.sin(arc.theta);\n    arc.radius = r1;\n\n    return arc;\n}\n\nfunction changeDirection(arc) {\n    arc.theta = (arc.theta + _enums.RAD.t180) % _enums.RAD.t360;\n    arc.centerX -= 2 * arc.radius * Math.cos(arc.theta);\n    arc.centerY += 2 * arc.radius * Math.sin(arc.theta);\n\n    return arc;\n}\n\n// ===== RENDERING =====\nfunction repaintContainer(node, arc) {\n    node.style.left = arc.endX + 'px';\n    node.style.top = arc.endY + 'px';\n}\n\nfunction repaintBody(node, arc) {\n    var rad = arc.clockwise ? _enums.RAD.t180 - arc.theta : _enums.RAD.t360 - arc.theta;\n\n    node.style.transform = 'rotate(' + (rad + _enums.RAD.t45) + 'rad)';\n}\n\nfunction repaintCircle(node, arc) {\n    if (node === undefined) {\n        return;\n    }\n\n    node.style.width = 2 * arc.radius + 'px';\n    node.style.height = 2 * arc.radius + 'px';\n\n    node.style.left = '-' + (arc.radius + arc.radius * Math.cos(arc.theta)) + 'px';\n    node.style.top = '-' + (arc.radius - arc.radius * Math.sin(arc.theta)) + 'px';\n\n    node.style.borderRadius = arc.radius + 'px';\n}\n\nfunction repaintVision(node, arc) {\n    if (node === undefined) {\n        return;\n    }\n\n    var rad = arc.clockwise ? _enums.RAD.t180 - arc.theta : _enums.RAD.t360 - arc.theta;\n}\n\nfunction repaintVisionGrid(nodes, arc, grids) {\n    if (nodes === undefined) {\n        return;\n    }\n\n    grids.vision.forEach(function (_ref3, i) {\n        var x = _ref3.x,\n            y = _ref3.y,\n            touch = _ref3.touch;\n\n        nodes[i].style.left = x + 'px';\n        nodes[i].style.top = y + 'px';\n\n        nodes[i].style.border = touch ? '2px solid red' : '0';\n    });\n}\n\nexports.default = Particle;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"33.js","sources":["webpack:///js/particle.js?3bde"],"sourcesContent":["import Rx, { Observable } from 'rxjs';\nimport { RAD } from './enums';\nimport Store from './store';\n\nconst random = {\n    bool: (weight) => Math.random() < (weight || 0.5),\n    color: () => `rgb(${Math.floor(Math.random() * 255)}, ${Math.floor(Math.random() * 255)}, ${Math.floor(Math.random() * 255)})`,\n    num: (min, max) => min + Math.round(Math.random() * max),\n}\n\n// ===== Constructor =====\n\nfunction Particle(parent, bounds, config, globalGrid) {\n    this.config = Object.assign({\n        bounds,\n        color: random.color(),\n        gridSize: 5,\n        randomize: false,\n        showMovementCircle: false,\n        showVisionGrid: false,\n        speed: 4,\n        visionRadius: 50\n    }, config);\n\n    this.grids = {\n        global: globalGrid || {},\n        vision: createVisionGrid(this.config)\n    };\n\n    this.arc = {\n        centerX: random.num(0, bounds.width),\n        centerY: random.num(0, bounds.height),\n        clockwise: random.bool(),\n        endX: 0,\n        endY: 0,\n        length: random.num(RAD.t90, RAD.t360),\n        radius: random.num(100, 200),\n        theta: random.num(RAD.t90, RAD.t360),\n    };\n\n    this.nodes = {\n        body: createBodyNode(this.config),\n        circle: undefined,\n        container: createContainerNode(this.config),\n        parent,\n        vision: undefined,\n        visionGrid: undefined,\n    };\n\n    this.nodes.container.appendChild(this.nodes.body);\n    parent.appendChild(this.nodes.container);\n\n    this.updateConfig(this.config);\n    this.nextFrame();\n};\n\n// ===== PROTOTYPE =====\n\nParticle.prototype.remove = function() {\n    this.nodes.parent.removeChild(this.nodes.container);\n    return this;\n}\n\nParticle.prototype.nextFrame = function() {\n    this.arc = updateArc(this.arc, this.config);\n    this.grids.vision = updateVisionGrid(this.arc, this.config, this.grids);\n\n    repaintContainer(this.nodes.container, this.arc);\n    repaintBody(this.nodes.body, this.arc);\n    repaintCircle(this.nodes.circle, this.arc);\n    repaintVision(this.nodes.vision, this.arc);\n    repaintVisionGrid(this.nodes.visionGrid, this.arc, this.grids);\n}\n\nParticle.prototype.updateConfig = function(config) {\n    Object.assign(this.config, config);\n\n    const { showMovementCircle, showVisionGrid } = this.config;\n\n    if (showMovementCircle === true && this.nodes.circle === undefined) {\n        this.nodes.circle = createCircleNode(config);\n        this.nodes.container.appendChild(this.nodes.circle);\n    }\n\n    if (showMovementCircle === false && this.nodes.circle !== undefined) {\n        this.nodes.container.removeChild(this.nodes.circle);\n        delete this.nodes.circle;\n    }\n\n    if (showVisionGrid === true && this.nodes.vision === undefined) {\n        this.nodes.vision = createVisionNode(config, this.grids);\n        this.nodes.visionGrid = createVisionGridNodes(this.config, this.grids, this.nodes);\n        this.nodes.container.appendChild(this.nodes.vision);\n    }\n\n    if (showVisionGrid === false && this.nodes.vision !== undefined) {\n        this.nodes.container.removeChild(this.nodes.vision);\n        delete this.nodes.vision;\n        delete this.nodex.visionGrid;\n    }\n}\n\n// ===== CREATION =====\n\nfunction createBodyNode(config) {\n    const node = document.createElement('div');\n    node.className = 'particle-body';\n    node.style.backgroundColor = config.color;\n    return node;\n}\n\nfunction createCircleNode(config) {\n    if (config.showMovementCircle === false) {\n        return undefined;\n    }\n\n    const node = document.createElement('div');\n    node.className = 'particle-movement-circle';\n    node.style.borderColor = config.color;\n    return node;\n}\n\nfunction createContainerNode(config) {\n    const node = document.createElement('div');\n    node.className = 'particle-container';\n    return node;\n}\n\nfunction createVisionNode(config) {\n    if (config.showVisionGrid === false) {\n        return undefined;\n    }\n\n    const node = document.createElement('div');\n    node.className = 'particle-vision';\n\n    return node;\n}\n\nfunction createVisionGrid(config) {\n    if (config.showVisionGrid === false) {\n        return [];\n    }\n\n    const { gridSize: side, visionRadius: radius } = config;\n    const r0 = radius;\n    const r1 = radius - side;\n\n    const points = [];\n\n    for (let x = -radius; x <= radius; x += side) {\n        for (let y = -radius; y <= radius; y += side) {\n            // Omit lower half\n            if (y < 0) {\n                continue;\n            }\n\n            // Include vision band\n            const r = Math.pow(Math.pow(x, 2) + Math.pow(y, 2), 0.5);\n            if (r > r0 || r < r1) {\n                continue;\n            }\n\n            let alpha = Math.atan(y / x);\n            if (x < 0) {\n                alpha = RAD.t180 + alpha;\n            }\n\n            points.push({ x, y, r, alpha, touch: false });\n        }\n    }\n\n    return points;\n}\n\nfunction createVisionGridNodes(config, grids, nodes) {\n    if (config.showVisionGrid === false) {\n        return undefined;\n    }\n\n    return grids.vision.reduce((acc, { x, y }) => {\n        const div = document.createElement('div');\n        div.className = 'particle-vision-dot';\n        div.style.backgroundColor = config.color;\n        nodes.vision.appendChild(div);\n\n        acc.push(div);\n\n        return acc;\n    }, []);\n}\n\n// ===== CALCULATIONS =====\n\nfunction updateArc(arc, { bounds, randomize, speed }) {\n    // Randomly change radius and rotation direction.\n    if (arc.length <= 0) {\n        arc.length = random.num(RAD.t90, RAD.t360);\n\n        if (randomize === true) {\n            arc = moveArc(arc, random.num(100, 200));\n\n            if (random.bool(0.8)) {\n                arc.clockwise = !arc.clockwise;\n                arc = changeDirection(arc);\n            }\n        }\n    }\n\n    // Ensure constant velocity and theta between 0 and 2π.\n    const delta = speed / arc.radius;\n    arc.length -= delta;\n\n    arc.theta += (arc.clockwise ? -delta : +delta);\n    arc.theta = (arc.theta > 0 ? arc.theta % RAD.t360 : RAD.t360 + arc.theta);\n\n    arc.endX = arc.centerX + arc.radius * Math.cos(arc.theta);\n    arc.endY = arc.centerY - arc.radius * Math.sin(arc.theta);\n\n    // Overflow.\n    if (arc.endX < 0) {\n        arc.endX += bounds.width;\n        arc.centerX += bounds.width\n    } else if (arc.endX > bounds.width) {\n        arc.endX -= bounds.width;\n        arc.centerX -= bounds.width\n    }\n\n    if (arc.endY < 0) {\n        arc.endY += bounds.height;\n        arc.centerY += bounds.height\n    } else if (arc.endY > bounds.height) {\n        arc.endY -= bounds.height;\n        arc.centerY -= bounds.height\n    }\n\n    return arc;\n}\n\nfunction updateVisionGrid(arc, config, grids) {\n    const { global, vision } = grids;\n\n    return vision.reduce((acc, point) => {\n        const rad = arc.clockwise\n            ? arc.theta - point.alpha\n            : arc.theta - point.alpha + RAD.t180;\n\n        point.x = point.r * Math.cos(rad) + config.visionRadius;\n        point.y = -point.r * Math.sin(rad) + config.visionRadius;\n\n        // console.warn(point.alpha, point.alpha + arc.theta)\n\n        // const gridX = point.x - point.x % 5;\n        // const gridY = point.y - point.y % 5;\n\n        // point.touch = (global[gridX] !== undefined && global[gridX][gridY] !== undefined);\n\n        return acc.concat(point);\n    }, []);\n}\n\nfunction moveArc(arc, newRadius) {\n    const r0 = arc.radius;\n    const r1 = newRadius;\n\n    // Moves arc center to new radius while keeping theta constant.\n    arc.centerX -= (r1 - r0) * Math.cos(arc.theta);\n    arc.centerY += (r1 - r0) * Math.sin(arc.theta);\n    arc.radius = r1;\n\n    return arc;\n}\n\nfunction changeDirection(arc) {\n    arc.theta = (arc.theta + RAD.t180) % RAD.t360;\n    arc.centerX -= (2 * arc.radius) * Math.cos(arc.theta);\n    arc.centerY += (2 * arc.radius) * Math.sin(arc.theta);\n\n    return arc;\n}\n\n// ===== RENDERING =====\nfunction repaintContainer(node, arc) {\n    node.style.left = `${arc.endX}px`;\n    node.style.top = `${arc.endY}px`;\n}\n\nfunction repaintBody(node, arc) {\n    const rad = arc.clockwise\n        ? RAD.t180 - arc.theta\n        : RAD.t360 - arc.theta;\n\n    node.style.transform = `rotate(${rad + RAD.t45}rad)`;\n}\n\nfunction repaintCircle(node, arc) {\n    if (node === undefined) {\n        return;\n    }\n\n    node.style.width = `${2 * arc.radius}px`;\n    node.style.height = `${2 * arc.radius}px`;\n\n    node.style.left = `-${arc.radius + arc.radius * Math.cos(arc.theta)}px`;\n    node.style.top = `-${arc.radius - arc.radius * Math.sin(arc.theta)}px`;\n\n    node.style.borderRadius = `${arc.radius}px`;\n}\n\nfunction repaintVision(node, arc) {\n    if (node === undefined) {\n        return;\n    }\n\n    const rad = arc.clockwise\n        ? 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+eval("\n\nObject.defineProperty(exports, \"__esModule\", {\n    value: true\n});\n\nvar _rxjs = __webpack_require__(/*! rxjs */ 14);\n\nvar _rxjs2 = _interopRequireDefault(_rxjs);\n\nvar _enums = __webpack_require__(/*! ./enums */ 16);\n\nvar _store = __webpack_require__(/*! ./store */ 22);\n\nvar _store2 = _interopRequireDefault(_store);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar random = {\n    bool: function bool(weight) {\n        return Math.random() < (weight || 0.5);\n    },\n    color: function color() {\n        return 'rgb(' + Math.floor(Math.random() * 255) + ', ' + Math.floor(Math.random() * 255) + ', ' + Math.floor(Math.random() * 255) + ')';\n    },\n    num: function num(min, max) {\n        return min + Math.round(Math.random() * max);\n    }\n};\n\n// ===== Constructor =====\n\nfunction Particle(parent, bounds, config, globalGrid) {\n    this.config = Object.assign({\n        bounds: bounds,\n        color: random.color(),\n        gridSize: 5,\n        randomize: false,\n        showMovementCircle: false,\n        showVisionGrid: false,\n        speed: 4,\n        visionRadius: 50\n    }, config);\n\n    this.grids = {\n        global: globalGrid || {},\n        vision: createVisionGrid(this.config)\n    };\n\n    this.arc = {\n        centerX: random.num(0, bounds.width),\n        centerY: random.num(0, bounds.height),\n        clockwise: random.bool(),\n        endX: 0,\n        endY: 0,\n        length: random.num(_enums.RAD.t90, _enums.RAD.t360),\n        radius: random.num(100, 200),\n        theta: random.num(_enums.RAD.t90, _enums.RAD.t360)\n    };\n\n    this.nodes = {\n        body: createBodyNode(this.config),\n        circle: undefined,\n        container: createContainerNode(this.config),\n        parent: parent,\n        visionGrid: undefined\n    };\n\n    this.nodes.container.appendChild(this.nodes.body);\n    parent.appendChild(this.nodes.container);\n\n    this.updateConfig(this.config);\n    this.nextFrame();\n};\n\n// ===== PROTOTYPE =====\n\nParticle.prototype.remove = function () {\n    this.nodes.parent.removeChild(this.nodes.container);\n    return this;\n};\n\nParticle.prototype.nextFrame = function () {\n    this.arc = updateArc(this.arc, this.config);\n    this.grids.vision = updateVisionGrid(this.arc, this.config, this.grids);\n\n    repaintContainer(this.nodes.container, this.arc);\n    repaintBody(this.nodes.body, this.arc);\n    repaintCircle(this.nodes.circle, this.arc);\n    repaintVisionGrid(this.nodes.visionGrid, this.arc, this.grids);\n};\n\nParticle.prototype.updateConfig = function (config) {\n    Object.assign(this.config, config);\n\n    var _config = this.config,\n        showMovementCircle = _config.showMovementCircle,\n        showVisionGrid = _config.showVisionGrid;\n\n\n    if (showMovementCircle === true && this.nodes.circle === undefined) {\n        this.nodes.circle = createCircleNode(config);\n        this.nodes.container.appendChild(this.nodes.circle);\n    }\n\n    if (showMovementCircle === false && this.nodes.circle !== undefined) {\n        this.nodes.container.removeChild(this.nodes.circle);\n        delete this.nodes.circle;\n    }\n\n    if (showVisionGrid === true && this.nodes.visionGrid === undefined) {\n        this.nodes.visionGrid = createVisionGridNodes(this.config, this.grids, this.nodes);\n    }\n\n    if (showVisionGrid === false && this.nodes.visionGrid !== undefined) {\n        delete this.nodex.visionGrid;\n    }\n};\n\n// ===== CREATION =====\n\nfunction createBodyNode(config) {\n    var node = document.createElement('div');\n    node.className = 'particle-body';\n    node.style.backgroundColor = config.color;\n    return node;\n}\n\nfunction createCircleNode(config) {\n    if (config.showMovementCircle === false) {\n        return undefined;\n    }\n\n    var node = document.createElement('div');\n    node.className = 'particle-movement-circle';\n    node.style.borderColor = config.color;\n    return node;\n}\n\nfunction createContainerNode(config) {\n    var node = document.createElement('div');\n    node.className = 'particle-container';\n    return node;\n}\n\nfunction createVisionGrid(config) {\n    if (config.showVisionGrid === false) {\n        return [];\n    }\n\n    var side = config.gridSize,\n        radius = config.visionRadius;\n\n    var r0 = radius;\n    var r1 = radius - side;\n\n    var points = [];\n\n    for (var x = -radius; x <= radius; x += side) {\n        for (var y = -radius; y <= radius; y += side) {\n            // Omit lower half\n            if (y < 0) {\n                continue;\n            }\n\n            // Include vision band\n            var r = Math.pow(Math.pow(x, 2) + Math.pow(y, 2), 0.5);\n            if (r > r0 || r < r1) {\n                continue;\n            }\n\n            var alpha = Math.atan(y / x);\n            if (x < 0) {\n                alpha = _enums.RAD.t180 + alpha; // TODO +=\n            }\n\n            points.push({ x: x, y: y, r: r, alpha: alpha, touch: false });\n        }\n    }\n\n    return points;\n}\n\nfunction createVisionGridNodes(config, grids, nodes) {\n    if (config.showVisionGrid === false) {\n        return undefined;\n    }\n\n    return grids.vision.reduce(function (acc, _ref) {\n        var x = _ref.x,\n            y = _ref.y;\n\n        var div = document.createElement('div');\n        div.className = 'particle-vision-dot';\n        div.style.backgroundColor = config.color;\n        nodes.parent.appendChild(div);\n\n        acc.push(div);\n\n        return acc;\n    }, []);\n}\n\n// ===== CALCULATIONS =====\n\nfunction updateArc(arc, _ref2) {\n    var bounds = _ref2.bounds,\n        randomize = _ref2.randomize,\n        speed = _ref2.speed;\n\n    // Randomly change radius and rotation direction.\n    if (arc.length <= 0) {\n        arc.length = random.num(_enums.RAD.t90, _enums.RAD.t360);\n\n        if (randomize === true) {\n            arc = moveArc(arc, random.num(100, 200));\n\n            if (random.bool(0.8)) {\n                arc.clockwise = !arc.clockwise;\n                arc = changeDirection(arc);\n            }\n        }\n    }\n\n    // Ensure constant velocity and theta between 0 and 2π.\n    var delta = speed / arc.radius;\n    arc.length -= delta;\n\n    arc.theta += arc.clockwise ? -delta : +delta;\n    arc.theta = arc.theta > 0 ? arc.theta % _enums.RAD.t360 : _enums.RAD.t360 + arc.theta;\n\n    arc.endX = arc.centerX + arc.radius * Math.cos(arc.theta);\n    arc.endY = arc.centerY - arc.radius * Math.sin(arc.theta);\n\n    // Overflow.\n    if (arc.endX < 0) {\n        arc.endX += bounds.width;\n        arc.centerX += bounds.width;\n    } else if (arc.endX > bounds.width) {\n        arc.endX -= bounds.width;\n        arc.centerX -= bounds.width;\n    }\n\n    if (arc.endY < 0) {\n        arc.endY += bounds.height;\n        arc.centerY += bounds.height;\n    } else if (arc.endY > bounds.height) {\n        arc.endY -= bounds.height;\n        arc.centerY -= bounds.height;\n    }\n\n    return arc;\n}\n\nfunction updateVisionGrid(arc, config, grids) {\n    var global = grids.global,\n        vision = grids.vision;\n\n\n    return vision.reduce(function (acc, point) {\n        var rad = arc.clockwise ? arc.theta + point.alpha + _enums.RAD.t180 : arc.theta + point.alpha;\n\n        var x = point.r * Math.cos(rad);\n        var y = point.r * Math.sin(rad);\n\n        point.x = arc.endX + x;\n        point.y = arc.endY - y;\n\n        var gridX = point.x - point.x % 5;\n        var gridY = point.y - point.y % 5;\n\n        point.touch = global[gridX] !== undefined && global[gridX][gridY] !== undefined;\n\n        return acc.concat(point);\n    }, []);\n}\n\nfunction moveArc(arc, newRadius) {\n    var r0 = arc.radius;\n    var r1 = newRadius;\n\n    // Moves arc center to new radius while keeping theta constant.\n    arc.centerX -= (r1 - r0) * Math.cos(arc.theta);\n    arc.centerY += (r1 - r0) * Math.sin(arc.theta);\n    arc.radius = r1;\n\n    return arc;\n}\n\nfunction changeDirection(arc) {\n    arc.theta = (arc.theta + _enums.RAD.t180) % _enums.RAD.t360;\n    arc.centerX -= 2 * arc.radius * Math.cos(arc.theta);\n    arc.centerY += 2 * arc.radius * Math.sin(arc.theta);\n\n    return arc;\n}\n\n// ===== RENDERING =====\nfunction repaintContainer(node, arc) {\n    node.style.left = arc.endX + 'px';\n    node.style.top = arc.endY + 'px';\n}\n\nfunction repaintBody(node, arc) {\n    var rad = arc.clockwise ? _enums.RAD.t180 - arc.theta : _enums.RAD.t360 - arc.theta;\n\n    node.style.transform = 'rotate(' + (rad + _enums.RAD.t45) + 'rad)';\n}\n\nfunction repaintCircle(node, arc) {\n    if (node === undefined) {\n        return;\n    }\n\n    node.style.width = 2 * arc.radius + 'px';\n    node.style.height = 2 * arc.radius + 'px';\n\n    node.style.left = '-' + (arc.radius + arc.radius * Math.cos(arc.theta)) + 'px';\n    node.style.top = '-' + (arc.radius - arc.radius * Math.sin(arc.theta)) + 'px';\n\n    node.style.borderRadius = arc.radius + 'px';\n}\n\nfunction repaintVisionGrid(nodes, arc, grids) {\n    if (nodes === undefined) {\n        return;\n    }\n\n    grids.vision.forEach(function (_ref3, i) {\n        var x = _ref3.x,\n            y = _ref3.y,\n            touch = _ref3.touch;\n\n        nodes[i].style.left = x + 'px';\n        nodes[i].style.top = y + 'px';\n\n        nodes[i].style.border = touch ? '2px solid red' : '0';\n    });\n}\n\nexports.default = Particle;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"33.js","sources":["webpack:///js/particle.js?3bde"],"sourcesContent":["import Rx, { Observable } from 'rxjs';\nimport { RAD } from './enums';\nimport Store from './store';\n\nconst random = {\n    bool: (weight) => Math.random() < (weight || 0.5),\n    color: () => `rgb(${Math.floor(Math.random() * 255)}, ${Math.floor(Math.random() * 255)}, ${Math.floor(Math.random() * 255)})`,\n    num: (min, max) => min + Math.round(Math.random() * max),\n}\n\n// ===== Constructor =====\n\nfunction Particle(parent, bounds, config, globalGrid) {\n    this.config = Object.assign({\n        bounds,\n        color: random.color(),\n        gridSize: 5,\n        randomize: false,\n        showMovementCircle: false,\n        showVisionGrid: false,\n        speed: 4,\n        visionRadius: 50\n    }, config);\n\n    this.grids = {\n        global: globalGrid || {},\n        vision: createVisionGrid(this.config)\n    };\n\n    this.arc = {\n        centerX: random.num(0, bounds.width),\n        centerY: random.num(0, bounds.height),\n        clockwise: random.bool(),\n        endX: 0,\n        endY: 0,\n        length: random.num(RAD.t90, RAD.t360),\n        radius: random.num(100, 200),\n        theta: random.num(RAD.t90, RAD.t360),\n    };\n\n    this.nodes = {\n        body: createBodyNode(this.config),\n        circle: undefined,\n        container: createContainerNode(this.config),\n        parent,\n        visionGrid: undefined,\n    };\n\n    this.nodes.container.appendChild(this.nodes.body);\n    parent.appendChild(this.nodes.container);\n\n    this.updateConfig(this.config);\n    this.nextFrame();\n};\n\n// ===== PROTOTYPE =====\n\nParticle.prototype.remove = function() {\n    this.nodes.parent.removeChild(this.nodes.container);\n    return this;\n}\n\nParticle.prototype.nextFrame = function() {\n    this.arc = updateArc(this.arc, this.config);\n    this.grids.vision = updateVisionGrid(this.arc, this.config, this.grids);\n\n    repaintContainer(this.nodes.container, this.arc);\n    repaintBody(this.nodes.body, this.arc);\n    repaintCircle(this.nodes.circle, this.arc);\n    repaintVisionGrid(this.nodes.visionGrid, this.arc, this.grids);\n}\n\nParticle.prototype.updateConfig = function(config) {\n    Object.assign(this.config, config);\n\n    const { showMovementCircle, showVisionGrid } = this.config;\n\n    if (showMovementCircle === true && this.nodes.circle === undefined) {\n        this.nodes.circle = createCircleNode(config);\n        this.nodes.container.appendChild(this.nodes.circle);\n    }\n\n    if (showMovementCircle === false && this.nodes.circle !== undefined) {\n        this.nodes.container.removeChild(this.nodes.circle);\n        delete this.nodes.circle;\n    }\n\n    if (showVisionGrid === true && this.nodes.visionGrid === undefined) {\n        this.nodes.visionGrid = createVisionGridNodes(this.config, this.grids, this.nodes);\n    }\n\n    if (showVisionGrid === false && this.nodes.visionGrid !== undefined) {\n        delete this.nodex.visionGrid;\n    }\n}\n\n// ===== CREATION =====\n\nfunction createBodyNode(config) {\n    const node = document.createElement('div');\n    node.className = 'particle-body';\n    node.style.backgroundColor = config.color;\n    return node;\n}\n\nfunction createCircleNode(config) {\n    if (config.showMovementCircle === false) {\n        return undefined;\n    }\n\n    const node = document.createElement('div');\n    node.className = 'particle-movement-circle';\n    node.style.borderColor = config.color;\n    return node;\n}\n\nfunction createContainerNode(config) {\n    const node = document.createElement('div');\n    node.className = 'particle-container';\n    return node;\n}\n\nfunction createVisionGrid(config) {\n    if (config.showVisionGrid === false) {\n        return [];\n    }\n\n    const { gridSize: side, visionRadius: radius } = config;\n    const r0 = radius;\n    const r1 = radius - side;\n\n    const points = [];\n\n    for (let x = -radius; x <= radius; x += side) {\n        for (let y = -radius; y <= radius; y += side) {\n            // Omit lower half\n            if (y < 0) {\n                continue;\n            }\n\n            // Include vision band\n            const r = Math.pow(Math.pow(x, 2) + Math.pow(y, 2), 0.5);\n            if (r > r0 || r < r1) {\n                continue;\n            }\n\n            let alpha = Math.atan(y / x);\n            if (x < 0) {\n                alpha = RAD.t180 + alpha; // TODO +=\n            }\n\n            points.push({ x, y, r, alpha, touch: false });\n        }\n    }\n\n    return points;\n}\n\nfunction createVisionGridNodes(config, grids, nodes) {\n    if (config.showVisionGrid === false) {\n        return undefined;\n    }\n\n    return grids.vision.reduce((acc, { x, y }) => {\n        const div = document.createElement('div');\n        div.className = 'particle-vision-dot';\n        div.style.backgroundColor = config.color;\n        nodes.parent.appendChild(div);\n\n        acc.push(div);\n\n        return acc;\n    }, []);\n}\n\n// ===== CALCULATIONS =====\n\nfunction updateArc(arc, { bounds, randomize, speed }) {\n    // Randomly change radius and rotation direction.\n    if (arc.length <= 0) {\n        arc.length = random.num(RAD.t90, RAD.t360);\n\n        if (randomize === true) {\n            arc = moveArc(arc, random.num(100, 200));\n\n            if (random.bool(0.8)) {\n                arc.clockwise = !arc.clockwise;\n                arc = changeDirection(arc);\n            }\n        }\n    }\n\n    // Ensure constant velocity and theta between 0 and 2π.\n    const delta = speed / arc.radius;\n    arc.length -= delta;\n\n    arc.theta += (arc.clockwise ? -delta : +delta);\n    arc.theta = (arc.theta > 0 ? arc.theta % RAD.t360 : RAD.t360 + arc.theta);\n\n    arc.endX = arc.centerX + arc.radius * Math.cos(arc.theta);\n    arc.endY = arc.centerY - arc.radius * Math.sin(arc.theta);\n\n    // Overflow.\n    if (arc.endX < 0) {\n        arc.endX += bounds.width;\n        arc.centerX += bounds.width\n    } else if (arc.endX > bounds.width) {\n        arc.endX -= bounds.width;\n        arc.centerX -= bounds.width\n    }\n\n    if (arc.endY < 0) {\n        arc.endY += bounds.height;\n        arc.centerY += bounds.height\n    } else if (arc.endY > bounds.height) {\n        arc.endY -= bounds.height;\n        arc.centerY -= bounds.height\n    }\n\n    return arc;\n}\n\nfunction updateVisionGrid(arc, config, grids) {\n    const { global, vision } = grids;\n\n    return vision.reduce((acc, point) => {\n        const rad = arc.clockwise\n            ? arc.theta + point.alpha + RAD.t180\n            : arc.theta + point.alpha;\n\n        const x = point.r * Math.cos(rad);\n        const y = point.r * Math.sin(rad);\n\n        point.x = arc.endX + x;\n        point.y = arc.endY - y;\n\n        const gridX = point.x - point.x % 5;\n        const gridY = point.y - point.y % 5;\n\n        point.touch = (global[gridX] !== undefined && global[gridX][gridY] !== undefined);\n\n        return acc.concat(point);\n    }, []);\n}\n\nfunction moveArc(arc, newRadius) {\n    const r0 = arc.radius;\n    const r1 = newRadius;\n\n    // Moves arc center to new radius while keeping theta constant.\n    arc.centerX -= (r1 - r0) * Math.cos(arc.theta);\n    arc.centerY += (r1 - r0) * Math.sin(arc.theta);\n    arc.radius = r1;\n\n    return arc;\n}\n\nfunction changeDirection(arc) {\n    arc.theta = (arc.theta + RAD.t180) % RAD.t360;\n    arc.centerX -= (2 * arc.radius) * Math.cos(arc.theta);\n    arc.centerY += (2 * arc.radius) * Math.sin(arc.theta);\n\n    return arc;\n}\n\n// ===== RENDERING =====\nfunction repaintContainer(node, arc) {\n    node.style.left = `${arc.endX}px`;\n    node.style.top = `${arc.endY}px`;\n}\n\nfunction repaintBody(node, arc) {\n    const rad = arc.clockwise\n        ? RAD.t180 - arc.theta\n        : RAD.t360 - arc.theta;\n\n    node.style.transform = `rotate(${rad + RAD.t45}rad)`;\n}\n\nfunction repaintCircle(node, arc) {\n    if (node === undefined) {\n        return;\n    }\n\n    node.style.width = `${2 * arc.radius}px`;\n    node.style.height = `${2 * arc.radius}px`;\n\n    node.style.left = `-${arc.radius + arc.radius * Math.cos(arc.theta)}px`;\n    node.style.top = `-${arc.radius - arc.radius * Math.sin(arc.theta)}px`;\n\n    node.style.borderRadius = `${arc.radius}px`;\n}\n\nfunction repaintVisionGrid(nodes, arc, grids) {\n    if (nodes === undefined) {\n        return;\n    }\n\n    grids.vision.forEach(({ x, y, touch }, i) => {\n        nodes[i].style.left = `${x}px`;\n        nodes[i].style.top = `${y}px`;\n\n        nodes[i].style.border = (touch ? '2px solid red' : '0');\n    });\n}\n\nexport default Particle;\n\n\n\n// WEBPACK FOOTER //\n// js/particle.js"],"mappings":";;;;;;AAAA;AACA;;;AAAA;AACA;AAAA;AACA;;;;;AACA;AACA;AAAA;AAAA;AACA;AAAA;AAAA;AACA;AAAA;AAAA;AAHA;AACA;AAKA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AARA;AACA;AAUA;AACA;AACA;AAFA;AACA;AAIA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AARA;AACA;AAUA;AACA;AACA;AACA;AACA;AACA;AALA;AACA;AAOA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AAFA;AAAA;AAAA;AACA;AACA;AAGA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AAJA;AAAA;AACA;AAKA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AAAA;AAAA;AACA;AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AAAA;AAAA;AAAA;AACA;AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AAAA;AAAA;AACA;AACA;AACA;AACA;AACA;AAGA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AAGA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AAAA;AAAA;AAAA;AACA;AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA","sourceRoot":""}");
 
 /***/ }),
 /* 34 */
diff --git a/js/particle.js b/js/particle.js
index d88683e..2897da5 100644
--- a/js/particle.js
+++ b/js/particle.js
@@ -43,7 +43,6 @@ function Particle(parent, bounds, config, globalGrid) {
         circle: undefined,
         container: createContainerNode(this.config),
         parent,
-        vision: undefined,
         visionGrid: undefined,
     };
 
@@ -68,7 +67,6 @@ Particle.prototype.nextFrame = function() {
     repaintContainer(this.nodes.container, this.arc);
     repaintBody(this.nodes.body, this.arc);
     repaintCircle(this.nodes.circle, this.arc);
-    repaintVision(this.nodes.vision, this.arc);
     repaintVisionGrid(this.nodes.visionGrid, this.arc, this.grids);
 }
 
@@ -87,15 +85,11 @@ Particle.prototype.updateConfig = function(config) {
         delete this.nodes.circle;
     }
 
-    if (showVisionGrid === true && this.nodes.vision === undefined) {
-        this.nodes.vision = createVisionNode(config, this.grids);
+    if (showVisionGrid === true && this.nodes.visionGrid === undefined) {
         this.nodes.visionGrid = createVisionGridNodes(this.config, this.grids, this.nodes);
-        this.nodes.container.appendChild(this.nodes.vision);
     }
 
-    if (showVisionGrid === false && this.nodes.vision !== undefined) {
-        this.nodes.container.removeChild(this.nodes.vision);
-        delete this.nodes.vision;
+    if (showVisionGrid === false && this.nodes.visionGrid !== undefined) {
         delete this.nodex.visionGrid;
     }
 }
@@ -126,17 +120,6 @@ function createContainerNode(config) {
     return node;
 }
 
-function createVisionNode(config) {
-    if (config.showVisionGrid === false) {
-        return undefined;
-    }
-
-    const node = document.createElement('div');
-    node.className = 'particle-vision';
-
-    return node;
-}
-
 function createVisionGrid(config) {
     if (config.showVisionGrid === false) {
         return [];
@@ -163,7 +146,7 @@ function createVisionGrid(config) {
 
             let alpha = Math.atan(y / x);
             if (x < 0) {
-                alpha = RAD.t180 + alpha;
+                alpha = RAD.t180 + alpha; // TODO +=
             }
 
             points.push({ x, y, r, alpha, touch: false });
@@ -182,7 +165,7 @@ function createVisionGridNodes(config, grids, nodes) {
         const div = document.createElement('div');
         div.className = 'particle-vision-dot';
         div.style.backgroundColor = config.color;
-        nodes.vision.appendChild(div);
+        nodes.parent.appendChild(div);
 
         acc.push(div);
 
@@ -242,18 +225,19 @@ function updateVisionGrid(arc, config, grids) {
 
     return vision.reduce((acc, point) => {
         const rad = arc.clockwise
-            ? arc.theta - point.alpha
-            : arc.theta - point.alpha + RAD.t180;
+            ? arc.theta + point.alpha + RAD.t180
+            : arc.theta + point.alpha;
 
-        point.x = point.r * Math.cos(rad) + config.visionRadius;
-        point.y = -point.r * Math.sin(rad) + config.visionRadius;
+        const x = point.r * Math.cos(rad);
+        const y = point.r * Math.sin(rad);
 
-        // console.warn(point.alpha, point.alpha + arc.theta)
+        point.x = arc.endX + x;
+        point.y = arc.endY - y;
 
-        // const gridX = point.x - point.x % 5;
-        // const gridY = point.y - point.y % 5;
+        const gridX = point.x - point.x % 5;
+        const gridY = point.y - point.y % 5;
 
-        // point.touch = (global[gridX] !== undefined && global[gridX][gridY] !== undefined);
+        point.touch = (global[gridX] !== undefined && global[gridX][gridY] !== undefined);
 
         return acc.concat(point);
     }, []);
@@ -307,16 +291,6 @@ function repaintCircle(node, arc) {
     node.style.borderRadius = `${arc.radius}px`;
 }
 
-function repaintVision(node, arc) {
-    if (node === undefined) {
-        return;
-    }
-
-    const rad = arc.clockwise
-        ? RAD.t180 - arc.theta
-        : RAD.t360 - arc.theta;
-}
-
 function repaintVisionGrid(nodes, arc, grids) {
     if (nodes === undefined) {
         return;