run-away.min.js

d = 300; c.width = c.height = d; f = v = h = u = 0; H = "rgba(0,0,0,0.5)"; I = "#fff"; R = "red"; K = document; function M() { return 2 * (Math.floor(Math.random() * (d / 2))) } x = M(); y = M(); w = W = 7; X = Y = M(); function C() { a.fillStyle = H; a.fillRect(0, 0, d, d) } function P(I) { a.fillStyle = I; a.fillText("score: " + Math.floor(f / 10), 8, 10) } z = setInterval(m, 50); function m() { f++; if (f % 100 == 0) { u = 10; W++ } if (u > 0) { r = 4; s = 2; u-- } else { r = 2; s = 4 } if (Y < y) Y += r; else Y -= r; if (X < x) X += r; else X -= r; if (v == "u" && y > 8) y -= s; if (v == "d" && y < d - 8) y += s; if (h == "l" && x > 8) x -= s; if (h == "r" && x < d - 8) x += s; function E() { S = X - x; D = Y - y; F = w + W; return (S * S + D * D <= F * F) } if (E()) { clearInterval(z); setInterval(function () { q(X, Y, R, W); W++; P("#000") }, 5) } C(); function q(x, y, n, w) { a.fillStyle = n; a.beginPath(); a.arc(x, y, w, 0, Math.PI * 2, true); a.fill() } q(x, y, "#0FF", w); q(X, Y, R, W); P(I) } K.onkeydown = function (e) { k = e.keyCode; if (k == 37) h = "l"; if (k == 38) v = "u"; if (k == 39) h = "r"; if (k == 40) v = "d" }; K.onkeyup = function (e) { k = e.keyCode; if (k == 37 || k == 39) h = ""; if (k == 38 || k == 40) v = "" }