// Created by Алексей Р. /* Written by Alexey Rudenko at Sololearn playground with some little help from James Long. https://jlongster.com/Making-Sprite-based-Games-with-Canvas */ var w, h, k, xo, yo, units = [], icons = [], bullets = [], enemies = [], explosions = [], dif = [' practice', ' easy', ' medium', ' hard', ' harder', ' hardcore', ' pro', ' deathmatch', ' godlike', ' impossible',,,' horror'], gameTime = 0, isGameOver, nextwave = 0, enemydep = 1, firstwave = false, deployarea = false, counter = 0, counter2 = 0, gameNum = 0, lvl = 0, // 0...9 inf = function () { var popup = document.getElementById('infdiv'); var btn = document.getElementById('info'); if (popup.style.display !== 'block') { popup.style.display = 'block'; info.style.color = 'white'; info.style.backgroundColor = 'red'; } else { popup.style.display = 'none'; info.style.color = 'red'; info.style.backgroundColor = '#f3f3f3'; } }, changeLvl = function (op) { if (op == 1 && lvl < 9) { lvl++; } if (op == 0 && lvl > 0) { lvl--; } var _dif = document.getElementsByClassName("dif"); _dif[1].innerHTML = dif[lvl]; }; (function () { function Sprite(url, pos, size, resized, animspeed, frames, _index, once) { this.pos = pos; this.size = size; this.resized = resized; this.url = url; this.animspeed = animspeed; this.frames = frames; this._index = _index; this.once = once; } Sprite.prototype = { update: function (dt) { this._index += this.animspeed * dt; }, render: function (ctx) { var frame; if (this.animspeed > 0) { var max = this.frames.length; var idx = Math.floor(this._index); frame = this.frames[idx % max]; if (this.once && idx >= max) { this.done = true; return; } } else { frame = 0; } var x = this.pos[0]; var y = this.pos[1]; x += frame * this.size[0]; ctx.drawImage(resources.get(this.url), x, y, this.size[0], this.size[1], 0, 0, this.resized[0], this.resized[1]); } }; window.Sprite = Sprite; })(); (function () { function Unit(status, pos, hp, speed, maxspeed, range, damage, reload, angle, defaultangle, dir, sprite) { this.status = status; this.pos = pos; this.hp = hp; this.maxhp = hp; this.speed = speed; this.maxspeed = maxspeed; this.range = range; this.damage = damage; this.reload = reload; this.angle = angle; this.defaultangle = defaultangle; this.dir = dir; this.sprite = sprite } Unit.prototype = { getAngle: function (target) { var x = this.pos[0] - target[0]; var y = this.pos[1] - target[1]; if (x < 0) { return Math.floor(Math.atan(y / x) * (180 / Math.PI)); } else { return Math.floor(Math.atan(y / x) * (180 / Math.PI) - 180); } }, moveAhead: function (dt) { var rad = this.angle / (180 / Math.PI); this.pos[0] += Math.cos(rad) * this.speed * dt * this.dir; this.pos[1] += Math.sin(rad) * this.speed * dt * this.dir; }, findTarget: function (t) { for (i = 0; i < t.length; i++) { var dis = this.getDistance(t[i]); if (dis < this.range && !t[i].destroyed && t[i].time > 0.7 && t[i].pos[1] > k) { this.target = t[i]; this.status = "targetfound"; return; } } }, avoidCollision: function (list, ownindx, dt) { var l = list; for (i = 0; i < l.length; i++) { if (i == ownindx) continue; if (this.getDistance(l[i]) < k * 8) { for (var sec = 2; sec > 0; sec--) { var ownfuturepos = [this.pos[0] + (Math.cos(this.angle / (180 / Math.PI)) * this.speed * sec * this.dir), this.pos[1] + (Math.sin(this.angle / (180 / Math.PI)) * this.speed * sec * this.dir)]; var allyfuturepos = [l[i].pos[0] + (Math.cos(l[i].angle / (180 / Math.PI)) * l[i].speed * sec * this.dir), l[i].pos[1] + (Math.sin(l[i].angle / (180 / Math.PI)) * l[i].speed * sec * this.dir)]; if (getDistance(ownfuturepos, allyfuturepos) < k * 3 && this.pos[1] * this.dir > l[i].pos[1] * l[i].dir && Math.abs(ownfuturepos[0] - allyfuturepos[0]) < this.sprite.resized[0]) { this.speed -= 160/Math.pow(sec, 4) * dt; } } } } }, getDistance: function (t) { return Math.floor(Math.sqrt(Math.pow(this.pos[0] - t.pos[0], 2) + Math.pow(this.pos[1] - t.pos[1], 2))); }, fireOnTarget: function () { var x = Math.floor(this.pos[0] + ((this.sprite.resized[1] / 2 * this.dir) * Math.cos(this.angle / (180 / Math.PI)))); var y = Math.floor(this.pos[1] + ((this.sprite.resized[0] / 2 * this.dir) * Math.sin(this.angle / (180 / Math.PI)))); bullets.push( { pos: [x, y], target: this.target, speed: k * 12, damage: this.damage, angle: this.angle + getRandom (-5,3), dir: this.dir, sprite: new Sprite("https://d30y9cdsu7xlg0.cloudfront.net/png/321488-200.png", [0, 0], [200, 200], [k * (this.reload + 0.5), k * (this.reload + 0.5)]) }); this.lastshot = 0; } }; window.Unit = Unit; })(); var getRandom = function (min, max) { return Math.floor(Math.random() * (max - min + 1)) + min; }; var getDistance = function (own, ally) { return Math.floor(Math.sqrt(Math.pow(own[0] - ally[0], 2) + Math.pow(own[1] - ally[1], 2))); }; var deployUnit = function (unit, pos) { var u = unit; units.push(new Unit(u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7], u[8], u[9], u[10], u[11], u[12], u[13])); units[units.length - 1].pos = pos; deployarea = false; }; var deployEnemy = function (unit, pos) { var u = unit; enemies.push(new Unit(u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7], u[8], u[9], u[10], u[11], u[12], u[13])); enemies[enemies.length - 1].pos = pos; }; var returnToBase = function (icon) { icon.pos = icon.defaultpos; icon.dragable = false; }; var gameOver = function (a) { var _min = Math.floor(gameTime / 60); var _sec = ('0' + Math.floor(gameTime % 60)).slice(-2); switch (a) { case 'win': alert("Mission completed! Your time is " + _min + ':' + _sec + '\n\nLosses: ' + counter + ' units.\n\nEnemies destroyed: ' + counter2 + '.'); var log_item = "

Game " + ++gameNum + ": 🏆 Win ⏲" + _min + ':' + _sec + ' /' + dif[lvl] + ' /' + "

"; if (lvl < dif.length - 1) lvl++; var log = document.getElementById('log'); log.innerHTML += log_item; document.body.style.paddingTop = 50 - (gameNum * 3) + "%"; log.style.display = "block"; loader(); break; case 'loss': alert("Mission failed!" + '\n\nLosses: ' + counter + ' units.\n\nEnemies destroyed: ' + counter2 + '.'); var log_item = "

Game " + ++gameNum + ": 💩 Fail ⏲" + _min + ':' + _sec + ' /' + dif[lvl] + ' /' + "

"; if (lvl > 0) lvl--; var log = document.getElementById('log'); log.innerHTML += log_item; document.body.style.paddingTop = 50 - (gameNum * 3)+ "%"; log.style.display = "block"; loader(); break; } } var reset = function () { units = []; icons = []; bullets = []; enemies = []; explosions = []; isGameOver = false; gameTime = 0; enemydep = 1; firstwave = false; nextwave = 0; deployarea = false; counter = 0; counter2 = 0; } var xxx = 0, yyy = 0; var mouse = { x: 0, y: 0, down: false } ///////////////////////////// var startGame = function () { reset(); var log = document.getElementById('log'); var popup = document.getElementById('infdiv'); log.style.display = "none"; popup.style.display = 'none'; document.body.style.paddingTop = 0; var maindiv = document.getElementById("main"); maindiv.innerHTML = '

'; var c = document.getElementById("c"); var ctx = c.getContext("2d"); w = window.innerWidth; h = window.innerHeight; if (w < h) { c.width = w - 46; c.height = c.width/0.7; } else { c.height = h - 46; c.width = c.height * 0.7; } k = c.width / 26; xo = c.offsetLeft; yo = c.offsetTop; //// icons = [ { pos: [c.width / 28, c.height - c.height / 8], defaultpos: [c.width / 28, c.height - c.height / 8], respawn: false, respawnrate: 1, sprite: new Sprite('https://opengameart.org/sites/default/files/tanks_3.png', [55, 76], [194, 134], [c.width / 5.5, c.height / 10.5]) }, { pos: [c.width / 3.4, c.height - c.height / 8.5], defaultpos: [c.width / 3.4, c.height - c.height / 8.5], respawn: false, respawnrate: 3, sprite: new Sprite('https://opengameart.org/sites/default/files/tanks_3.png', [71, 600], [159, 130], [c.width / 6.5, c.height / 12]) }, { pos: [c.width / 1.85, c.height - c.height / 8.2], defaultpos: [c.width / 1.85, c.height - c.height / 8.2], respawn: false, respawnrate: 2, sprite: new Sprite('https://opengameart.org/sites/default/files/tanks_3.png', [52, 269], [205, 124], [c.width / 5.8, c.height / 12]) }]; /// c.addEventListener("touchmove", function (event) { var touch = event.touches[0]; xxx = touch.pageX - xo - 3; yyy = touch.pageY - yo - 3; checkIcons(xxx, yyy); event.preventDefault(); }, false); c.addEventListener("touchend", function (event) { checkDeployment(xxx, yyy); }, false); c.addEventListener("mousemove", function (event) { mouse.x = event.pageX - xo - 3; mouse.y = event.pageY - yo - 3; }, false); c.addEventListener("mousedown", function () { mouse.down = true; checkIcons(mouse.x, mouse.y); }, false); c.addEventListener("mouseup", function () { mouse.down = false; checkDeployment(mouse.x, mouse.y); }, false); function checkIcons(xx, yy) { if (xx > icons[0].pos[0] && xx < icons[0].pos[0] + (k * 5) && yy > icons[0].pos[1] - (k * 3) && yy < icons[0].pos[1] + (k * 3) && icons[0].respawn == false) { if (!icons[1].dragable && !icons[2].dragable) { icons[0].dragable = true; basictank[0] = 'readyfordeploy'; deployarea = true; } } if (xx > icons[1].pos[0] && xx < icons[1].pos[0] + (k * 5) && yy > icons[1].pos[1] - (k * 3) && yy < icons[1].pos[1] + (k * 3) && icons[1].respawn == false) { if (!icons[0].dragable && !icons[2].dragable) { icons[1].dragable = true; lighttank[0] = 'readyfordeploy'; deployarea = true; } } if (xx > icons[2].pos[0] && xx < icons[2].pos[0] + (k * 5) && yy > icons[2].pos[1] - (k * 3) && yy < icons[2].pos[1] + (k * 3) && icons[2].respawn == false) { if (!icons[0].dragable && !icons[1].dragable) { icons[2].dragable = true; ttank[0] = 'readyfordeploy'; deployarea = true; } } } function checkDeployment(xx, yy) { var inside = false; if (xx > c.width / 100 && yy > c.height / 2 && xx < c.width - c.width / 100 - 3 && yy < c.height / 2 + c.height / 3.7) { inside = true; } var allies = false; for(var i = 0; i < units.length; i++) { if (getDistance([xx,yy], units[i].pos) < 2*k) allies = true; } if (basictank[0] == 'readyfordeploy' && inside && !allies) { basictank[0] = ' '; deployUnit(basictank, [xx, yy]); units[units.length - 1].status = 'acceleration'; icons[0].pos = [icons[0].defaultpos[0], icons[0].defaultpos[1] + c.width / 4]; icons[0].dragable = false; icons[0].respawn = true; deployarea = false; } else if ( basictank[0] == 'readyfordeploy' && (!inside && !icons[0].respawn || allies)) { returnToBase(icons[0]); basictank[0] = ' ' } if (lighttank[0] == 'readyfordeploy' && inside && !allies) { lighttank[0] = ' '; deployUnit(lighttank, [xx, yy]); units[units.length - 1].status = 'acceleration'; icons[1].pos = [icons[1].defaultpos[0], icons[1].defaultpos[1] + c.width / 4];; icons[1].dragable = false; icons[1].respawn = true; } else if ( lighttank[0] == 'readyfordeploy' && (!inside && !icons[1].respawn || allies)) { returnToBase(icons[1]); lighttank[0] = " "; } if (ttank[0] == 'readyfordeploy' && inside && !allies) { ttank[0] = ' '; deployUnit(ttank, [xx, yy]); units[units.length - 1].status = 'acceleration'; icons[2].pos = [icons[2].defaultpos[0], icons[2].defaultpos[1] + c.width / 4];; icons[2].dragable = false; icons[2].respawn = true; } else if ( ttank[0] == 'readyfordeploy' && (!inside && !icons[2].respawn || allies)) { returnToBase(icons[2]); ttank[0] = " "; } } lastTime = Date.now(); // units // stats -- status, pos, hp, speed, maxspeed, range, damage, reload, angle, defaultangle , dir, sprite var basictank = ['acceleration', [0, 0], 1500, 0, k * 1.5, k * 7, 399, 1.3, - 90, - 90, 1, new Sprite('https://opengameart.org/sites/default/files/tanks_3.png', [55, 76], [194, 135], [c.width / 11, c.height / 21])]; var lighttank = ['acceleration', [0, 0], 300, 0, k * 3.5, k * 10, 149, 0.9, - 90, - 90, 1, new Sprite("https://opengameart.org/sites/default/files/tanks_3.png", [71, 600], [159, 130], [c.width / 13, c.height / 24])]; var ttank = ['acceleration', [0, 0], 150, 0, k * 2.5, k * 12.5, 30, 0.15, - 90, - 90, 1, new Sprite("https://opengameart.org/sites/default/files/tanks_3.png", [52, 269], [205, 124], [c.width / 11.6, c.height / 24])]; //enemy units var enemybasic = ['acceleration', [0, 0], 1500, 0, k * 1.5, k * 7, 399, 1.3, - 90, - 90, - 1, new Sprite('https://opengameart.org/sites/default/files/tanks_3.png', [365, 76], [194, 135], [c.width / 11, c.height / 21])]; var enemylight = ['acceleration', [200, 200], 300, 0, k * 3.5, k * 10, 149, 0.7, - 90, - 90, - 1, new Sprite("https://opengameart.org/sites/default/files/tanks_3.png", [395, 600], [159, 130], [c.width / 13, c.height / 24])]; var enemyttank = ['acceleration', [0, 0], 150, 0, k * 2.5, k * 12.5, 30, 0.15, - 90, - 90, - 1, new Sprite("https://opengameart.org/sites/default/files/tanks_3.png", [362, 269], [205, 124], [c.width / 11.6, c.height / 24])]; main() // The main game loop function main() { var now = Date.now(); var dt = (now - lastTime) / 1000; update(dt); render(); lastTime = now; if (!isGameOver) requestAnimFrame(main); }; function update(dt) { gameTime += dt; if (nextwave < 0) { nextwave = (enemydep * (16 - lvl)-gameTime + 2).toFixed(0) } else { nextwave -= dt; } if (Math.floor(gameTime) == 1 && firstwave == false) { deployEnemy(enemybasic, [c.width / 4, c.height / 5]); deployEnemy(enemylight, [c.width / 5, c.height / 18]); deployEnemy(enemybasic, [c.width - (c.width / 4), c.height / 5]); deployEnemy(enemylight, [c.width - (c.width / 5), c.height / 18]); deployEnemy(enemyttank, [c.width / 2, c.height / 20]); firstwave = true; } if (Math.floor(gameTime) == enemydep * (16 - lvl)) { deployEnemy(enemybasic, [getRandom(30, c.width - 30), getRandom(-20, - 40)]); deployEnemy(enemylight, [getRandom(30, c.width - 30), getRandom(-20, - 40) - (k * 2)]); deployEnemy(enemylight, [getRandom(30, c.width - 30), getRandom(-20, - 40) - (k * 2)]); deployEnemy(enemylight, [getRandom(30, c.width - 30), getRandom(-20, - 40) - (k * 2)]); deployEnemy(enemyttank, [getRandom(30, c.width - 30), getRandom(-20, - 40) - (k * 4)]); deployEnemy(enemyttank, [getRandom(30, c.width - 30), getRandom(-20, - 40) - (k * 4)]); enemydep++; } updateEntities(dt, units); updateEntities(dt, enemies); updateBullets(dt); updateIcons(dt); // checkCollisions(); }; function updateIcons(dt) { for (i = 0; i < icons.length; i++) { if (icons[i].pos[1] > icons[i].defaultpos[1] && icons[i].respawn == true) { icons[i].pos[1] -= icons[i].respawnrate * k * dt; } else { icons[i].respawn = false; } } }; function updateEntities(dt, list) { // Update the tank position for (var i = 0; i < list.length; i++) { var u = list[i]; var u2; list == units ? u2 = enemies : u2 = units; u.time = u.time + dt || 0; u.lastshot = u.lastshot + dt || 0; u.avoidCollision(list, i, dt); //remove if (u.destroyed) { list.splice(i, 1); i--; if (list == units) { counter++; } else { counter2++; } } else if (list == enemies && u.pos[1] > c.height - (c.width / 4 + 2 * k)) { isGameOver = true; gameOver('loss'); break; } else if ( list == units && u.pos[1] < k * 2) { isGameOver = true; gameOver('win'); break; } if (u.status == "acceleration" && u.speed < u.maxspeed) { u.speed += 15 * dt; switch (list) { case units: if (u.angle < u.defaultangle) { u.angle += Math.floor(80 * dt * u.dir); } else if (u.angle > u.defaultangle) { u.angle -= Math.floor(80 * dt * u.dir); } break; case enemies: u.cang = u.defaultangle; if (u.cang < -90) { u.cang += 180; } else if (u.cang > -90) { u.cang -= 180; } if (u.cang < u.angle) { u.angle -= Math.floor(75 * dt); } else if (u.cang > u.angle) { u.angle += Math.floor(75 * dt); } } } if (u.time > 1 && !u.target && u.pos[1] > k) { u.findTarget(u2); } if (u.target && u.target.destroyed) { u.status = 'acceleration'; delete u.target; } else if (u.status == "targetfound" && !u.target.destroyed) { if (u.speed > 0) { u.speed -= u.maxspeed * 2 * dt; } else { u.speed = 0 } u.cang = Math.floor(u.getAngle(u.target.pos)); if (list == enemies ) { if (u.cang < -90) { u.cang += 180; } else if (u.cang > -90) { u.cang -= 180; } } if (u.cang > u.angle && u.cang < u.angle + 5) { u.angle += Math.floor(50 * dt); } else if (u.cang > u.angle ) { u.angle += Math.floor(150 * dt); } else if (u.cang < u.angle && u.cang > u.angle - 5) { u.angle -= Math.floor(50 * dt); } else if (u.cang < u.angle ) { u.angle -= Math.floor(150 * dt); } if (u.lastshot > u.reload && Math.floor(u.angle) == Math.floor(u.cang) && u.getDistance(u.target) < u.range) { u.fireOnTarget(); } } if (u.time > 0.7 && u.speed > 0) { u.moveAhead(dt); } }; } function updateBullets(dt) { // Update all the explosions for (var i = 0; i < explosions.length; i++) { explosions[i].sprite.update(dt); // Remove if animation is done if (explosions[i].sprite.done) { explosions.splice(i, 1); i--; } } // Update all the bullets for (var i = 0; i < bullets.length; i++) { var b = bullets[i]; var rad = b.angle / (180 / Math.PI); b.pos[0] += Math.cos(rad) * b.speed * dt * b.dir; b.pos[1] += Math.sin(rad) * b.speed * dt * b.dir; // Remove the bullet if (b.pos[1] < b.target.pos[1] + k && b.pos[1] > b.target.pos[1] - k && b.pos[0] < b.target.pos[0] + k && b.pos[0] > b.target.pos[0] - k) { bullets.splice(i, 1); i--; if (b.target.hp >= 0 && !b.target.destroyed) { b.target.hp -= b.damage; } if (b.target.hp < 0) { b.target.destroyed = true; b.target.hp = 0; // Add an explosion explosions.push( { pos: b.target.pos, sprite: new Sprite("https://hsto.org/storage2/aeb/045/378/aeb0453784033c5b9c0a700f5952d84b.png", [0, 117], [39, 39], [k * 3.2, k * 3.2], 14, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], null, true) }); } } } } function render() { if (!isGameOver) { renderArea(ctx); renderEntities(enemies); renderEntities(units); renderBullets(); renderEntities(explosions); } }; function renderArea(ctx) { ctx.globalAlpha = 0.5; for (x = 0;x * 102 < c.width;x++) { for (y = 0;y * 102 < c.height;y++) { ctx.drawImage(resources.get('https://opengameart.org/sites/default/files/Ground_03.png'), 0, 0, 512, 512, x*102, y*102,102,102); } } ctx.globalAlpha = 1; ctx.fillStyle = "rgba(250,250,250,0.19)"; ctx.fillRect(0, 0, c.width, c.height ); ctx.fillStyle = "rgba(50,200,50,0.9)"; ctx.fillRect(0, 0, c.width, c.height / 20); ctx.fillStyle = " rgba(200,50,50,0.7)"; ctx.fillRect(0, c.height - c.width / 4 - c.height / 20, c.width, c.height / 20); ctx.font = c.height / 24 + "px Arial"; ctx.fillStyle = " rgba(250,250,250,0.7)"; ctx.fillText("NEXT WAVE IN " + Math.round (nextwave) , c.width/10, c.height/22); ctx.drawImage(resources.get('http://farm8.staticflickr.com/7231/7269527534_4d8ce226de.jpg'), 0, 0, 500, c.width / 4, 0, c.height - c.width / 4, 500, c.width / 4); ctx.drawImage(resources.get('http://farm8.staticflickr.com/7231/7269527534_4d8ce226de.jpg'), 17, 0, 483, c.width / 4, 500, c.height - c.width / 4, 500, c.width / 4); ctx.beginPath(); for (var x = c.width / 4; x < c.width; x += c.width / 4) { ctx.moveTo(x + 0.1, c.height - c.width / 4); ctx.lineTo(x + 0.1, c.height); }; ctx.moveTo(0, c.height - c.width / 4); ctx.lineTo(c.width, c.height - c.width / 4); ctx.closePath(); ctx.strokeStyle = "#eee"; ctx.stroke(); if (deployarea === true) { drawDeployArea(); } }; function drawDeployArea() { ctx.beginPath(); ctx.rect(c.width / 100 -2, c.height / 2 -2, c.width - c.width / 100 - 3 +4, c.height / 3.7 +4); ctx.strokeStyle = "darkgreen"; ctx.closePath(); ctx.stroke(); ctx.beginPath(); ctx.rect(c.width / 100, c.height / 2, c.width - c.width / 100 - 3, c.height / 3.7); ctx.strokeStyle = "white"; ctx.closePath(); ctx.stroke(); } function drawTrLights() { for (i = 0; i < icons.length; i++) { if (icons[i].respawn == true) { ctx.fillStyle = "red"; } else { ctx.fillStyle = "green"; } ctx.fillRect(c.width / 4.8 + c.width / 4 * i, c.height - c.width / 4.1, c.width / 30, c.width / 30); }; }; function renderEntities(list) { for (var i = 0; i < list.length; i++) { renderEntity(list[i]); drawTrLights(); drawIcons(icons); } } function renderBullets() { for (var i = 0; i < bullets.length; i++) { ctx.save(); ctx.fillStyle = "black"; ctx.beginPath (); ctx.arc(bullets[i].pos[0], bullets[i].pos[1], 1 + bullets[i].damage/300, 0, 2*Math.PI) ; ctx.fill(); ctx.restore(); } } function drawIcons(list) { for (var i = 0; i < list.length; i++) { if (!list[i].dragable) { ctx.save(); ctx.translate(list[i].pos[0] + list[i].sprite.resized[0] / 2, list[i].pos[1] + list[i].sprite.resized[1] / 2); ctx.rotate(Math.PI / 180 * (-90)); ctx.translate(-list[i].sprite.resized[0] / 2, - list[i].sprite.resized[1] / 2); list[i].sprite.render(ctx); ctx.restore(); } else { ctx.save(); if (mouse.down) { ctx.translate(mouse.x, mouse.y); } else { ctx.translate(xxx, yyy); } ctx.rotate(Math.PI / 180 * (-90)); ctx.translate(-list[i].sprite.resized[0] / 2, - list[i].sprite.resized[1] / 2); list[i].sprite.render(ctx); list[i].pos = [xxx, yyy] ctx.restore(); } } }; function renderEntity(entity) { if (!entity.destroyed) { ctx.save(); ctx.translate(entity.pos[0], entity.pos[1]); if (entity.time && entity.time < 0.7) { ctx.scale(1.9 - entity.time * entity.time * 1.7, 1.9 - entity.time * entity.time * 1.7); } ctx.rotate(Math.PI / 180 * (entity.angle)); ctx.translate(-entity.sprite.resized[0] / 2, - entity.sprite.resized[1] / 2); entity.sprite.render(ctx); renderHP(entity); ctx.restore(); } } function renderHP(entity) { if (entity.time > 0.8) { var hp = entity.hp * 100 / entity.maxhp; if (hp < 0) hp = 0; if (entity.dir < 0) { var reverse = entity.sprite.resized[0]; } else { var reverse = 0; } ctx.beginPath(); ctx.lineWidth = k / 2.5; ctx.lineCap = "round"; ctx.strokeStyle = "black"; ctx.moveTo(0 + reverse, 0); ctx.lineTo(0 + reverse, entity.sprite.resized[1]); ctx.stroke(); ctx.beginPath(); ctx.lineWidth = k / 3.2; ctx.lineCap = "round"; ctx.strokeStyle = "lightgrey"; ctx.moveTo(0 + reverse, 0); ctx.lineTo(0 + reverse, entity.sprite.resized[1]); ctx.stroke(); ctx.beginPath(); ctx.lineWidth = k / 4; ctx.lineCap = "round"; ctx.strokeStyle = "rgb(" + Math.floor(100 - hp * 2.56) + "," + Math.floor(hp * 2.56) + ",0)"; ctx.moveTo(0 + reverse, 0); ctx.lineTo(0 + reverse, hp / 100 * entity.sprite.resized[1]); ctx.stroke(); ctx.lineWidth = 1; } } }; /////////////^^^^^^^^^^^^^^//////////// var requestAnimFrame = (function () { return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function (callback) { window.setTimeout(callback, 1000 / 60); }; })(); ///^^^^^^^///////////^^^^///////// function loader() { var maindiv = document.getElementById("main"); maindiv.innerHTML = '
Difficulty:
' + dif[lvl] + ' '; lastTime = Date.now(); }; ////////////////////////////////// (function () { var resourceCache = {}; var loading = []; var readyCallbacks = []; // Load an image url or an array of image urls function load(urlOrArr) { if (urlOrArr instanceof Array) { urlOrArr.forEach(function (url) { _load(url); }); } else { _load(urlOrArr); } } function _load(url) { if (resourceCache[url]) { return resourceCache[url]; } else { var img = new Image(); img.onload = function () { resourceCache[url] = img; if (isReady()) { readyCallbacks.forEach(function (func) { func(); }); } }; resourceCache[url] = false; img.src = url; } } function get(url) { return resourceCache[url]; } function isReady() { var ready = true; for (var k in resourceCache) { if (resourceCache.hasOwnProperty(k) && !resourceCache[k]) { ready = false; } } return ready; } function onReady(func) { readyCallbacks.push(func); } window.resources = { load: load, get: get, onReady: onReady, isReady: isReady }; })(); resources.load([ "http://farm8.staticflickr.com/7231/7269527534_4d8ce226de.jpg", "https://opengameart.org/sites/default/files/tanks_3.png", "https://d30y9cdsu7xlg0.cloudfront.net/png/321488-200.png", "https://hsto.org/storage2/aeb/045/378/aeb0453784033c5b9c0a700f5952d84b.png", "https://opengameart.org/sites/default/files/Ground_03.png" ]); resources.onReady(loader);

GOODGAME