alert("Collect more than 500 points to WIN!"); /*-----------ONLOAD INITIALIZATION-----------*/ window.onload = function(){ var canvas = document.querySelector("canvas"); var c = canvas.getContext("2d"); canvas.width = window.innerWidth; canvas.height = window.innerHeight; /*-----------MOUSE/TOUCH & CONTROLS-----------*/ //mouse and touch objects var mouse = { x: window.innerWidth/2, y: window.innerHeight-33 }; var touch = { x: window.innerWidth/2, y: window.innerHeight-33 }; //event listener for mouse object canvas.addEventListener("mousemove", function(event){ mouse.x = event.clientX; //mouse.y = event.clientY; }); //eventListener to mouse object canvas.addEventListener("touchmove", function(event){ var rect = canvas.getBoundingClientRect(); var root = document.documentElement; var touch = event.changedTouches[0]; var touchX = parseInt(touch.clientX); var touchY = parseInt(touch.clientY) - rect.top - root.scrollTop; event.preventDefault(); mouse.x = touchX; //mouse.y = touchY; }); /*-----------GAME VARIABLES-----------*/ //player var _players = []; var player_width = 64; var player_height = 64; var playerImg = new Image(); playerImg.src = "https://i.ibb.co/k9xW3wx/jet.png"; var health = 100; //bullet array var _bullets = []; //array to hold n bullets var bullet_width = 6; var bullet_height = 8; var bullet_speed = 8; var _bullets2 = []; //array to hold n bullets [boss] //health array var _healthkits = []; //array to hold n health kits var healthkitImg = new Image(); healthkitImg.src = "https://image.ibb.co/iTrjuU/hospital.png"; //"https://image.ibb.co/gFvSEU/first_aid_kit.png"; var healthkit_width = 32; var healthkit_height = 32; //boss array var _boss = []; //array for boss var bossImg = new Image(); //boss image bossImg.src = "https://i.ibb.co/L8g3tSX/airplane.png"; //boss src image var boss_width = 64; var boss_height = 64; var boss_speed = 2; //speed of boss var boss_health = 100; //timing variables - this variables are used in main game loop function for handling delayed function calling var lastTime = 0; var lastTime2 = 0; var lastTime3 = 0; /*-----------GAME OBJECTS-----------*/ //Player object function Player(x, y, width, height){ this.x = x; this.y = y; this.width = width; this.height = height; this.draw = function(){ c.beginPath(); c.drawImage(playerImg, mouse.x - player_width/2, mouse.y - player_height/2); //draw player and center cursor }; this.update = function(){ this.draw(); }; } //Bullet object function Bullet(x, y, width, height, speed){ this.x = x; this.y = y; this.width = width; this.height = height; this.speed = speed; this.draw = function(){ c.beginPath(); c.rect(this.x, this.y, this.width, this.height); c.fillStyle = "#fff"; c.fill(); c.stroke(); }; this.update = function(){ this.y -= this.speed; this.draw(); }; } //Health kit object function Healthkit(x, y, width, height, speed){ this.x = x; this.y = y; this.width = width; this.height = height; this.speed = speed; this.draw = function(){ c.beginPath(); c.drawImage(healthkitImg, this.x, this.y); }; this.update = function(){ this.x += this.speed; this.draw(); }; } //Boss object function Boss(x, y, width, height, speed){ this.x = x; this.y = y; this.width = width; this.height = height; this.speed = speed; this.draw = function(){ c.beginPath(); c.drawImage(bossImg, this.x, this.y); }; this.update = function(){ //this.x += this.speed; if(this.x + boss_width/2 + 5 < mouse.x){ // 5 for smooth this.x += this.speed; } else if(this.x + boss_width/2 > mouse.x) { this.x -= this.speed; } this.draw(); }; } /*-----------_new OBJECT-----------*/ //draw Player for (var _ = 0; _<1; _++){ //draw player, only once var __player = new Player(mouse.x, mouse.y, player_width, player_height); _players.push(__player); } function drawBoss(){ //draw boss, only once for (var _ = 0; _<1; _++){ var x = Math.random()*(canvas.width - boss_width); var y = 0; var width = boss_width; var height = boss_height; var speed = boss_speed; var __boss = new Boss(x, y, width, height, speed); _boss.push(__boss); //push boss to my boss array } }drawBoss(); /* ******************** NOTE FOR ME ********************* By moving function drawHealthkits() from ln 198 to animate function (gameloop) and by using vars lastTime, lastTime2, lastTime3 I can manage timing of each function with currentTime and lastTime comparision. currentTime and lastTime in function: function animate(currentTime){ .. if(currentTime > lastTime + 1000){ // + 1000 gives me 1000ms (1s) delay lastTime = currentTime } } */ /* DRAW HEALTHKITS is moved to animate function (gameloop) to avoid setInterval //draw health kits function drawHealthkits(){ for (var _ = 0; _<1; _++){ //healthkits var x = -healthkit_width; var y = canvas.height/2; var width = healthkit_width; var height = healthkit_height; var speed = Math.random()*2.6; var __healthkit = new Healthkit(x, y, width, height, speed); _healthkits.push(__healthkit); //push enemy to my array of enemies } }setInterval(drawHealthkits, 9000); //draw healthkits every 9000ms (9s) */ //draw bullet //var __bullet = new Bullet(mouse.x-bullet_width/2, mouse.y-player_height, bullet_width, bullet_height, bullet_speed); /*Older fire function - called with setInterval - now moved to animate func (game loop) //fire bullet function function fire(){ //fire bullet from mouse.x on x axis, y axis, width, height, speed for (var _ = 0; _<1; _++){ var x = mouse.x-bullet_width/2; var y = mouse.y-player_height; var speed = bullet_speed; var __bullet = new Bullet(x, y, bullet_width, bullet_height, bullet_speed); _bullets.push(__bullet); //push bullet to my array of bullets } }//setInterval(fire, 1234); */ //event listener for fire function - now disabled canvas.addEventListener("click", function(){ //fire(); }); /*-----------COLLISION DETECTION-----------*/ function collision(a,b){ return a.x < b.x + b.width && a.x + a.width > b.x && a.y < b.y + b.height && a.y + a.height > b.y; } function collision2(a,b){ return mouse.x - a.width/2 < b.x + b.width && mouse.x + a.width/2 > b.x && mouse.y < b.y + b.height && mouse.y + a.height > b.y; } /*-----------BOSS_HEALTH-----------*/ c.fillStyle = "white"; c.font = "1em Arial"; /*-----------DIRTY ERROR HANDLING-----------*/ function stoperror() { return true; } window.onerror = stoperror; /*-----------GAME LOOP-----------*/ function animate(currentTime){ //currentTime for handling timing (firing, drawing healthkits) requestAnimationFrame(animate); //animate c.beginPath(); //begin c.clearRect(0, 0, window.innerWidth, window.innerHeight); //clear canvas c.fillText(health, mouse.x + 32, mouse.y); //health for(var i=0; i<_boss.length; i++){ c.fillText(boss_health, _boss[i].x + boss_width , 20); //boss_health } /*-----------__player, __bullet, __enemy update, __healthkit update-----------*/ //update _player for (var i=0; i < _players.length; i++){ _players[i].update(); //console.log(_players[i].hp); //deleted this.hp for clarity } //update bullets from bullets array for (var i=0; i < _bullets.length; i++){ _bullets[i].update(); if (_bullets[i].y < 0 || _bullets[i].y > canvas.height){ _bullets.splice(i, 1); } } //update bullets2 from bullets array for (var i=0; i < _bullets2.length; i++){ _bullets2[i].update(); if (_bullets2[i].y < 0 || _bullets2[i].y > canvas.height){ _bullets2.splice(i, 1); } } //draw healthkits for(var h=0; h < _healthkits.length; h++){ _healthkits[h].update(); } /**************** FIRE BULLETS FUNCTION ****************/ function fire(){ //fire bullet from mouse.x on x axis, y axis, width, height, speed for (var _ = 0; _<1; _++){ if(currentTime >= lastTime2 + 1000){ //fire every 1000ms (1s) lastTime2 = currentTime; var x = mouse.x-bullet_width/2; var y = mouse.y-player_height; var speed = bullet_speed; var __bullet = new Bullet(x, y, bullet_width, bullet_height, bullet_speed); _bullets.push(__bullet); //push bullet to my array of bullets } } }fire(); /**************** BOSS FIRE BULLETS FUNCTION ****************/ //with currentTime and lastTime comparison we can shoot every .5 second (500ms) for(var i=0; i<_boss.length; i++){ _boss[i].update(); if(currentTime >= lastTime + 500){ lastTime = currentTime; for (var _ = 0; _<1; _++){ var x = _boss[i].x+boss_width/2; var y = boss_height; var speed = 10; var __bullet2 = new Bullet(x, y, bullet_width, bullet_height, -speed); _bullets2.push(__bullet2); //push bullet to my array of bullets } } } /**************** DRAW HEALTHKITS FUNCTION ****************/ function drawHealthkits(){ //draw health kits every 9000ms (9s) for(var _ = 0; _<1; _++){ //draw healthkit if(currentTime >= lastTime3 + 9000){ //draw it every 9s with currentTime and lastTime comparision lastTime3 = currentTime; var x = -healthkit_width; //starting x axis position var y = canvas.height/2; //y axis postion - centered var width = healthkit_width; var height = healthkit_height; var speed = Math.random()*3.5; //healthkit's speed var __healthkit = new Healthkit(x, y, width, height, speed); _healthkits.push(__healthkit); //push healthkits to array } } }drawHealthkits(); /* ****************** COLLISIONS, BOOM! ****************** _ ,-, _ ,--, /: :\/': :`\/: :\ |`; ' `,' `.; `: | | | | ' | |. | : | |BOOM!| || | :. | : | : | : | \ \__/: :.. : :.. | :.. | ) `---',\___/,\___/ /' `==._ .. . /' `-::-' */ /***********BOSS AND BULLETS COLLISIONS***********/ //1. loop over both boss and bullets to detect collisions for(var jl = _boss.length-1; jl >= 0; jl--){ for(var ll = _bullets.length-1; ll >= 0; ll--){ if(collision(_boss[jl], _bullets[ll])){ _bullets.splice(ll, 1); //boss.splice(jl, 1); boss_health -= 10; if(boss_health == 0){ alert("You WON this round! You get extra hp!"); health += 100; boss_health = 100; } else if(health >= 500){ alert("You WON! You collected more than 500 points!"); health = 100; boss_health = 100; } } } } /***********PLAYER AND BULLETS COLLISIONS***********/ //2. loop over both player and bullets to detect collisions for(var q2 = _players.length-1; q2 >= 0; q2--){ for(var q3 = _bullets2.length-1; q3 >= 0; q3--){ if(collision2(_players[q2], _bullets2[q3])){ _bullets2.splice(q3, 1); health -= 10; if(health == 0){ alert("You LOST this round! Boss now gets extra hp!"); health = 100; boss_health += 100; } else if(boss_health >= 500){ alert("You LOST! Enemy collected more than 500 points!"); health = 100; boss_health = 100; } } } } /***********HEALTHKITS AND BULLETS COLLISIONS***********/ //loop over both healthkits and bullets to detect collisions for(var hh = _healthkits.length-1; hh >= 0; hh--){ for(var hhh = _bullets.length-1; hhh >= 0; hhh--){ if(collision(_healthkits[hh], _bullets[hhh])){ _healthkits.splice(hh, 1); _bullets.splice(hhh, 1); health += 100; } } } /***********HEALTHKITS AND BULLETS [FROM BOSS] COLLISIONS***********/ //loop over both healthkits and bullets to detect collisions [boss bullets] for(var hh = _healthkits.length-1; hh >= 0; hh--){ for(var hhh = _bullets2.length-1; hhh >= 0; hhh--){ if(collision(_healthkits[hh], _bullets2[hhh])){ _healthkits.splice(hh, 1); _bullets2.splice(hhh, 1); boss_health += 100; } } } } //animate func animate(); }; //end of onload func

Jets shootout