// Created by ᠌᠌brains "use strict"; var canvas, ctx, camera, alertDom; var event = {}; var ongoingTouches = []; var player, enemies = []; var initEnemies, initMap; var joystick, joystick2,pickUps=[]; var map = [],mapsheet, switchButton; var explosionImg, explosions = [],missileImg; var gamePlay = true,killCount = 0, gameTimer = 0; var w = screen.width, h = w * 1.35, k = w / 320, π = 2 * Math.PI; var imgResources = [ "https://opengameart.org/sites/default/files/survivor-idle_shotgun_0.png", "https://opengameart.org/sites/default/files/preview_idle.gif", "https://i.pinimg.com/originals/71/85/99/71859947b85b5c4911634fb2c8fd7694.png", "http://pngimg.com/uploads/missile/missile_PNG50.png" ]; var processImg = function(url) { var img = new Image(); img.src = url; return img; } var editorUrl= "http://jsbeautifier.org/?without-codemirror"; var HowToPlay; ;(function() { player = new PlayerClass(160, 1600); joystick = new JoystickClass(260, 370, 35, 0); joystick2 = new JoystickClass(140, 360,30, 1); camera = new CameraClass(160, 300, 50); switchButton = new SwitchClass(10, 370, 30); explosionImg = processImg(imgResources[2]); missileImg = processImg(imgResources[3]); mapsheet = [ "..........", ".**--*--*.", ".*+*+****.", ".-****+**.", ".++**+*--.", ".-*+**+-*.", ".*****+++.", ".-*+*****.", ".*****+-*.", ".-*+**+-*.", ".********.", ".--*+*+*-.", ".+++***++.", ".--******.", ".***++**+.", ".****+--*.", ".--+*+++*.", ".-+**--++.", ".+++*****.", ".****+-*+.", ".***++**-.", ".........." ] initMap = function(m) { var t; var s = 80; var x = -s; var y = -s; for (var i in m) { var ms = m[i]; y += s; x = -s; ms = ms.split(""); for (var k in ms) { x += s; map.push(new MapClass(x, y, ms[k], s)); } } } initEnemies = function() { for (var m in map) { if (map[m].t !== "-") continue; enemies.push( new EnemeyClass(map[m].x + map[m].size / 2, map[m].y + map[m].size / 2, m)); } } initMap(mapsheet); initEnemies(); event.on = function(ev, func) { window.addEventListener(ev, func); return event; } resetTouch(); })(); function PlayerClass(x, y) { this.size = 60 * k; this.x = x * k; this.y = y * k; this.vx = 0; this.vy = 0; this.ang = π / 2; this.speed = 1.4 * k; this.bullets = []; this.gunReload = 10; this.canUseGun = true; this.health = 100; this.img = [processImg(imgResources[0]), processImg(imgResources[1]) ]; this.imgState = 1; this.render = function() { ctx.save(); ctx.translate(this.x, this.y); ctx.rotate(π - this.ang + π / 4); ctx.drawImage(this.img[this.imgState], -this.size * 0.4, -this.size * 0.6, this.size, this.size); ctx.restore(); } this.renderHealth = function(x, y) { ctx.font = "bold " + 15 * k + "px arial"; ctx.fillStyle = "black"; ctx.fillText("HP", x, y + 10 * k); ctx.beginPath(); ctx.fillStyle = "white"; ctx.rect(x + 30 * k, y, 100 * k, 10 * k); ctx.fill(); ctx.stroke(); ctx.beginPath(); if (this.health > 15) ctx.fillStyle = "green"; else ctx.fillStyle = "red"; ctx.rect(x + 30 * k, y, this.health * k, 10 * k); ctx.fill(); } this.move = function() { this.x += this.vx; this.y += this.vy; } this.checkCollisions = function() { for (var m in map) { if (!IsOnScreen(map[m].x, map[m].y) || map[m].t == "*" || map[m].t == "-" ) continue; var cx = map[m].x + map[m].size / 2; var cy = map[m].y + map[m].size / 2; var sx = map[m].x + map[m].size + this.size / 2; var sy = map[m].y + map[m].size + this.size / 2; var test = IsInRect(this, map[m].x - this.size / 2, map[m].y - this.size / 2, sx, sy); if (test) { var ang = Ang(this.x, this.y, cx, cy) + π / 2; this.x -= Math.sin(ang) * this.speed*2; this.y -= Math.cos(ang) * this.speed*2; break; } } for (var e in enemies) { var en = enemies[e] if (!IsOnScreen(en.x, en.y) || !enemies[e].exist) continue; var dist = Dist(this.x, this.y, en.x, en.y); if (dist < (this.size + en.size) * 0.7) { var ang = Ang(this.x, this.y, en.x, en.y) + π / 2; this.x -= Math.sin(ang) * this.speed*2; this.y -= Math.cos(ang) * this.speed*2; } } for(var p in pickUps){ var en = pickUps[p] if (!IsOnScreen(en.x, en.y)) continue; var dist=Dist(this.x,this.y,en.x,en.y); if(dist 15) ctx.fillStyle = "green"; else ctx.fillStyle = "red"; ctx.rect(this.x - this.size, this.y + this.size + 10 * k, this.health * k, 10 * k); ctx.fill(); } this.checkSight = function() { var dist1 = Dist(this.x, this.y, player.x, player.y); var ang1 = Math.abs(Ang(this.x, this.y, player.x, player.y)); var lineBreak = false; for (var m in map) { if (!IsOnScreen(map[m].x, map[m].y) || map[m].t == "*" || map[m].t == "." || m == this.refMap ) continue; var mx = map[m].x + map[m].size / 2; var my = map[m].y + map[m].size / 2; var dist2 = Dist(this.x, this.y, mx, my); var distDiff = (40 * k) / (dist2); if (dist1 < dist2) continue; var ang2 = Math.abs(Ang(this.x, this.y, mx, my)); var diff = Math.abs(ang2 - ang1); if (diff < distDiff) { lineBreak = true break; } } if (!lineBreak && this.missiles.length < 1) this.isInSight = true; else this.isInSight = false; } } function BulletClass(x, y, ang, t) { this.x = x; this.y = y; this.ang = ang; this.speed = 6 * k; this.size = 3 * k; this.type = t; this.exist = true; this.move = function() { this.x += Math.sin(this.ang) * this.speed; this.y += Math.cos(this.ang) * this.speed; } this.render = function() { if (this.type == 1) { ctx.save(); ctx.beginPath(); ctx.translate(this.x, this.y); ctx.rotate(π - this.ang); ctx.fillStyle = "black"; ctx.rect(-this.size / 2, -this.size * 1.5, this.size, this.size * 6) ctx.fill(); ctx.restore(); } else if (this.type == 0) { ctx.beginPath(); ctx.fillStyle = "red"; ctx.arc(this.x, this.y, 3 * k, 0, π); ctx.fill(); ctx.stroke(); } } this.checkCollisions = function() { for (var m in map) { if (!IsOnScreen(map[m].x, map[m].y) || map[m].t == "*" || map[m].t == "." || map[m].t == "-" ) continue; var spacing = 5 * k; var sx = map[m].x + map[m].size + spacing; var sy = map[m].y + map[m].size + spacing; var test = IsInRect(this, map[m].x - spacing, map[m].y - spacing, sx, sy); if (test) { this.exist = false; } } for (var e in enemies) { var en = enemies[e]; if (!IsOnScreen(en.x, en.y) || !enemies[e].exist) continue; var dist = Dist(this.x, this.y, en.x, en.y); if (dist < en.size) { this.exist = false; if (this.type == 0) en.health -= 6; else en.health -= 2; break; } } } } function MissileClass(x, y, ang, n) { this.x = x; this.y = y; this.ang = ang; this.speed = 3 * k; this.w = 10 * k; this.h = 20 * k; this.power = n / 2; this.exist = true; this.move = function() { this.x += Math.sin(this.ang) * this.speed; this.y += Math.cos(this.ang) * this.speed; } this.render = function() { ctx.save(); ctx.translate(this.x, this.y); ctx.rotate((π - this.ang) + π / 2); ctx.drawImage(missileImg, -this.w / 2, -this.h / 2, this.w, this.h); ctx.restore(); } this.checkCollisions = function() { for (var m in map) { if (!IsOnScreen(map[m].x, map[m].y) || map[m].t == "*" || map[m].t == "." || map[m].t == "-" ) continue; var spacing = 5 * k; var sx = map[m].x + map[m].size + spacing; var sy = map[m].y + map[m].size + spacing; var test = IsInRect(this, map[m].x - spacing, map[m].y - spacing, sx, sy); if (test) { this.exist = false; return; } } var dist = Dist(this.x, this.y, player.x, player.y); if (dist < player.size / 2) { this.exist = false; player.hit(this.power); } } } function JoystickClass(x, y, s, t) { this.x = x * k; this.y = y * k; this.s = s * k; this.ox = x * k; this.oy = y * k; this.os = s / 2 * k; this.t = t; this.render = function() { ctx.save(); ctx.beginPath(); ctx.lineWidth = 2; ctx.globalAlpha = 0.5; ctx.fillStyle = "#aaaaaa"; ctx.arc(this.x, this.y, this.s, 0, π); ctx.fill(); ctx.stroke(); ctx.restore(); ctx.beginPath(); ctx.lineWidth = 2; if (this.t == 0) ctx.fillStyle = "#3333ff"; else if (this.t == 1) ctx.fillStyle = "#ff3333"; ctx.arc(this.ox, this.oy, this.os, 0, π); ctx.fill(); ctx.stroke(); } } function CameraClass(x, y) { this.ox = x * k; this.oy = y * k; this.x = x * k; this.y = y * k; this.update = function() { ctx.translate(-player.x + this.x, -player.y + this.y); } } function MapClass(x, y, t, s) { this.x = x * k; this.y = y * k; this.size = s * k; this.t = t; this.render = function() { ctx.beginPath(); ctx.lineWidth = 2; if (this.t == ".") ctx.fillStyle = "red"; else if (this.t == "+") ctx.fillStyle = "#ff6666"; else if (this.t == "*" || this.t == "-") ctx.fillStyle = "grey"; ctx.rect(this.x, this.y, this.size, this.size); ctx.fill(); ctx.stroke(); } } function ExplodeClass(x, y, s) { this.x = x; this.y = y; this.s = s; this.sx = 0; this.sy = 0; this.incX = 63.1; this.incY = 64; this.exist = true; this.frame = 0; this.render = function() { ctx.drawImage(explosionImg, this.sx, this.sy, 67, 67, this.x, this.y, this.s, this.s); } this.newFrame = function() { this.frame += 0.5; if (this.frame % 4 == 0) { this.sx = 0; this.sy += this.incY; } if (this.frame == 23) { this.exist = false; } if (this.frame % 1 == 0) this.sx += this.incX; } } function SwitchClass(x, y, s) { this.x = x * k; this.y = y * k; this.w = s * 2 * k; this.h = s * k; this.render = function() { ctx.beginPath(); ctx.fillStyle = "yellow" ctx.rect(this.x, this.y, this.w, this.h); ctx.fill(); ctx.stroke() ctx.beginPath(); ctx.fillStyle = "white" ctx.rect(this.x, this.y + this.h + 4 * k, 60 * k, 10 * k); ctx.fill(); ctx.stroke(); ctx.beginPath(); ctx.fillStyle = "green" ctx.rect(this.x, this.y + this.h + 4 * k, player.gunReload * 6 * k, 10 * k); ctx.fill(); ctx.font = this.h * 0.6 + "px georgia"; ctx.fillText("🔫🔄", this.x + 5 * k, this.y + 20 * k); } } function PickUpClass(x,y,s){ this.x=x; this.y=y; this.size=s; this.exist=true; this.render=function(){ ctx.font = this.size * 0.8 + "px georgia"; ctx.fillText("⚙️",x,y); } } ;(HowToPlay = function() { ongoingTouches = []; alert("Thanks to burey\'s help you can now control two joysticks at a time\n\nThis Game requires repetitive playing and mastery to finalize\n\nYour mission is simple..you have a soldier..eliminate every polygonal tank in the map to declare victory\n\nTap on the player/soldier to see 'THIS' instructions again.\n\nCamera:\nswipe or move across the screen to move camera\n\nBlocks:\nReddish blocks represent walls.grey blocks represent open floor\n\nHealth-kit:\nHealth-kit\'s are now created when you destroy eight sides enemies.collect them to boost your health.\n\nJoysticks:\nthere are two joysticks.The red one at the middle is for shooting in a particular direction.The blue at your right is for moving in a direction.\n\nWeapons:\nYou have two weapons.pistols,rifle.rifles deal way more damage than pistols.but rifles have to load sometimes.Tap the yellow rectangular bar at the right to switch weapons\n\nHints:\n#1:Dont shoot at tanks in open spaces,hide behind walls for cover e.t.c\n#2:The more sides a polygonal tank has,the more damage it deals\n#3:Your general movement direction should be upward/north\n Goodluck->Hope You Never Destroy All The Tanks"); } )(); function GameOver() { var restart = "

restart

" alertDom.style.display = "block"; alertDom.innerHTML = "You lost
Killcount:" + killCount + " out of "+enemies.length+"
time:" + ~~gameTimer + " seconds🕑" + restart; gamePlay = false; } function GameWon() { var restart = "

restart

" alertDom.style.display = "block"; alertDom.innerHTML = "You Won🎂🎂
Killcount:" + killCount + " out of "+enemies.length+"
time:" + ~~gameTimer + " seconds🕑" + restart; gamePlay = false; } function RestartGame() { alertDom.style.display = "none"; enemies = []; explosions = []; map = []; killCount = 0; gameTimer = 0; player = new PlayerClass(160, 1600); switchButton = new SwitchClass(30, 370, 30); camera = new CameraClass(160, 300, 50); initMap(mapsheet); initEnemies(); resetTouch(); gamePlay = true; RenderAll(); BulletTimer(); } function RenderAll() { if (!gamePlay) return; ctx.clearRect(0, 0, canvas.width, canvas.height); ctx.save(); camera.update(); for (var m in map) { if (!IsOnScreen(map[m].x, map[m].y)) continue; map[m].render(); } for (var b in player.bullets) { var bullet = player.bullets[b]; bullet.render(); bullet.move(); bullet.checkCollisions(); var dist = Dist(player.x, player.y, bullet.x, bullet.y); if (dist > 300 * k || !bullet.exist) player.bullets.splice(b, 1); } for (var e in enemies) { if (!IsOnScreen(enemies[e].x, enemies[e].y) || !enemies[e].exist ) continue; for (var em in enemies[e].missiles) { var m = enemies[e].missiles[em]; m.render(); m.move(); m.checkCollisions(); var dist = Dist(m.x, m.y, enemies[e].x, enemies[e].y); if (m.exist == false || dist > 300 * k) { enemies[e].missiles.splice(m, 1); } } enemies[e].render(); enemies[e].checkSight(); if (enemies[e].isInSight) { enemies[e].ang = π - Ang( player.x, player.y, enemies[e].x, enemies[e].y); } if (enemies[e].health < 1) { map[enemies[e].refMap].t = "*" enemies[e].exist = false; explosions.push(new ExplodeClass( enemies[e].x - enemies[e].size, enemies[e].y - enemies[e].size, enemies[e].size * 2)); if(enemies[e].sides>7){ pickUps.push(new PickUpClass( enemies[e].x-15*k,enemies[e].y+10*k,30*k )); } if (player.health < 95) player.health += 5; killCount++; } } for (var i in explosions) { if (!explosions[i].exist) { explosions.splice(i, 1); continue; } else if(!IsOnScreen(explosions[i].x, explosions[i].y)){ continue; } explosions[i].newFrame(); explosions[i].render(); } for(var p in pickUps){ if(!pickUps[p].exist) { pickUps.splice(p,1); continue ; } else if( !IsOnScreen(pickUps[p].x,pickUps[p].y)|| player.health>95 ) { continue; } pickUps[p].render(); } player.render(); ctx.restore(); for(var i = 0; i < ongoingTouches.length; i++){ var t = ongoingTouches[i]; if (t.isControl) { player.move(); player.checkCollisions(); } } joystick.render(); joystick2.render(); switchButton.render(); player.renderHealth(10 * k, 10); if (player.health < 0) GameOver(); else if (killCount == enemies.length) GameWon(); window.requestAnimationFrame(RenderAll); } function BulletTimer() { if (!gamePlay) return; gameTimer += 0.3; if (!player.canUseGun) { if (player.gunReload > 10) { player.gunReload = 10; player.canUseGun = true } else player.gunReload += 0.05; } if (player.imgState == 0 && player.canUseGun == false) { window.setTimeout(BulletTimer, 300); return; } for(var i = 0; i < ongoingTouches.length; i++){ var t = ongoingTouches[i]; if (t.isShoot && t.canShoot && player.bullets.length < 4) { var extraAng = -0.27; var x = Math.sin(player.ang + extraAng) * player.size / 2 + player.x; var y = Math.cos(player.ang + extraAng) * player.size / 2 + player.y; player.bullets.push( new BulletClass(x, y, player.ang, player.imgState)); if (player.imgState == 0) { if (player.canUseGun) { player.gunReload -= 1; } else { resetTouch(); player.imgState = 1; } if (player.gunReload == 0) player.canUseGun = false } } } for (var e in enemies) { var en = enemies[e]; if (!IsOnScreen(en.x, en.y) || !en.exist || !en.isInSight || en.missiles.length > 0) continue; en.timer++; if (en.timer % 3 != 0) continue; en.missiles.push( new MissileClass(en.x, en.y, π - en.ang, en.sides)); } window.setTimeout(BulletTimer, 300); } function switchGun() { player.imgState = (++player.imgState) % 2; } window.onload = function() { if (w > h) { alert("Oops this game has no PC support.."); return; } alertDom = document.querySelector("#alertDom"); canvas = document.querySelector("canvas"); canvas.width = w; canvas.height = h; ctx = canvas.getContext("2d"); var on=window.addEventListener; on("touchstart", startTouch); on("touchmove", startMove); on("touchend", endMove); RenderAll(); BulletTimer(); } /** returns the index of the touch by it's id from the global ongoing touches array */ function getTouchIndex(id){ for(var i = 0; i < ongoingTouches.length; i++){ var t = ongoingTouches[i]; if(t.id === id){ return i; } } } function startTouch(e) { if(!gamePlay) return; // iterate on all touches for(var i = 0; i < e.changedTouches.length; i++){ // initialize new touch object var t = {}; t.id = e.changedTouches[i].identifier; t.x = ~~e.changedTouches[i].pageX; t.y = ~~e.changedTouches[i].pageY; var dist = Dist(t.x, t.y, joystick.x, joystick.y); var dist2 = Dist(t.x, t.y, joystick2.x, joystick2.y); var dist3 = Dist(t.x, t.y, camera.x, camera.y); var sx = switchButton.x + switchButton.w; var sy = switchButton.y + switchButton.h; if (dist < joystick.s) t.isControl = true; else if (dist2 < joystick2.s) t.isShoot = true; else if (t.x > switchButton.x && t.x < sx && t.y > switchButton.y && t.y < sy) switchGun(); else if (dist3 < player.size) HowToPlay(); else if (e.changedTouches.length == 1) t.isMoveCamera = true; // add the touch object to the ongoing touches array ongoingTouches.push(t); } } function startMove(e) { if(!gamePlay) return; for(var i = 0; i < e.changedTouches.length; i++){ // find the relevant touch in the ongoing touches array (match by id) var touchIndex = getTouchIndex(e.changedTouches[i].identifier); var t = ongoingTouches[touchIndex]; // update the ongoing touch t.ex = ~~e.changedTouches[i].pageX; t.ey = ~~e.changedTouches[i].pageY; // act upon touch data which was initialized in the startTouch function if (t.isControl) { playerMove(t, joystick); } else if (t.isShoot) { playerShoot(t, joystick2); } else if (t.isMoveCamera) moveCamera(e.changedTouches, t, camera); } } function playerMove(t, j) { var dist = Dist(t.ex, t.ey, j.x, j.y); var ang = Ang(t.ex, t.ey, j.x, j.y); if (dist < j.s / 2) { j.ox = t.ex; j.oy = t.ey; } else { j.ox = Math.sin(ang) * j.s / 2 + j.x; j.oy = Math.cos(ang) * j.s / 2 + j.y; } // check if there is a shooting touch present var isShoot = false; for(var i = 0; i < ongoingTouches.length; i++){ var t = ongoingTouches[i]; if(t.isShoot){ isShoot = true; } } // skip angle update for player movement if there is a shoot touch (user ongoing touch on shoot joystick) // this will prevent the player from rapidly switching angles when both joysticks are in use and gives priority to the shoot joystick angle if(!isShoot){ player.ang = ang; } player.vx = Math.sin(ang) * player.speed; player.vy = Math.cos(ang) * player.speed; } function playerShoot(t, j) { var dist = Dist(t.ex, t.ey, j.x, j.y); var ang = Ang(t.ex, t.ey, j.x, j.y); if (dist < j.s) { j.ox = t.ex; j.oy = t.ey; } else { j.ox = Math.sin(ang) * j.s + j.x; j.oy = Math.cos(ang) * j.s + j.y; } player.ang = ang + π / 2; if (dist > j.s ) t.canShoot = true else t.canShoot = false; } function moveCamera(ev, t, c) { if (ev.length != 1) return; var x = t.ex - t.x; var y = t.ey - t.y; if (c.x < 30 * k || c.x > 270 * k || c.y < 30 * k || c.y > 400 * k) { c.x = c.ox; c.y = c.oy; resetTouch(); return; } c.x += x / 30; c.y += y / 30; } function endMove(e) { for(var i = 0; i < e.changedTouches.length; i++){ // find which touch was ended and remove it corresponding touch from the ongoing touches array var touchIndex = getTouchIndex(e.changedTouches[i].identifier); ongoingTouches.splice(touchIndex, 1); } if(!gamePlay) return; resetTouch(); } function resetTouch() { // since touch object is now obsolete, only reset the joysticks state // possible improvement: reset individual joystick if there are no move touches or shoot touches /*touch.x = NaN; touch.y = NaN; touch.ex = NaN; touch.ey = NaN;*/ joystick.ox = joystick.x; joystick.oy = joystick.y; joystick2.ox = joystick2.x; joystick2.oy = joystick2.y; /*touch.isControl = false; touch.isShoot = false; touch.canShoot = false; touch.isMoveCamera = false;*/ } function Rand(min, max) { return Math.floor(Math.random() * (max - min) + min); } function Ang(a, b, c, d) { return Math.atan2(a - c, b - d); } function Dist(a, b, c, d) { var x = a - c; var y = b - d; return Math.sqrt(x * x + y * y); } function IsInRect(obj, x, y, x2, y2) { if (obj.x > x && obj.x < x2 && obj.y > y && obj.y < y2) { return true; } else return false } function IsOnScreen(x, y) { if ( x < (player.x - camera.x - 150 * k) || x > (player.x + (w - camera.x + 100 * k)) || y < (player.y - camera.y - 150 * k) || y > (player.y + (h - camera.y + 100 * k))) return false; else return true; } CanvasRenderingContext2D.prototype.drawPolygon = function(x, y, s, n) { var ang = 0; var angInc = π / n; for (var i = 0; i < n + 1; i++) { var a = Math.sin(ang) * s + x; var b = Math.cos(ang) * s + y; ctx.lineTo(a, b); ang += angInc; } }

Fall Of The Polygonal Tanks