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Snake Game in Javascrip JS Bin// source https://jsbin.com/vihegiw
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta name="description" content="Snake Game in Javascript"> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width"> | |
| <title>JS Bin</title> | |
| <style id="jsbin-css"> | |
| #canvas{ | |
| border : 2px solid green; | |
| width : 400px; | |
| height : 400px; | |
| position : relative; | |
| } | |
| .block , .food{ | |
| width :20px; | |
| height :20px; | |
| background : yellow; | |
| position : absolute; | |
| border : 1px solid green; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="canvas" tabindex="-1"> | |
| </div> | |
| <button id="clear_btn" onClick="clearRects()">Clear</button> | |
| <button onClick="startGame()">START</button> | |
| <button onClick="stopGame()">STOP</button> | |
| <script id="jsbin-javascript"> | |
| const canvas = document.getElementById("canvas"); | |
| let canvasP = null , Food = {}; | |
| //SPEED 1-10 -> slow-fast | |
| let LEFT = 0 , TOP = 0 , DIR = "RIGHT" , SPEED = 6; | |
| function bindEvents(){ | |
| document.addEventListener("keyup",(ev) => { | |
| if(ev.keyCode == "38"){ //UP | |
| DIR = "UP" | |
| }else if(ev.keyCode == "40"){ //down | |
| DIR = "DOWN" | |
| }else if(ev.keyCode == "37"){ //left | |
| DIR = "LEFT" | |
| }else if(ev.keyCode == "39"){ //right | |
| DIR = "RIGHT" | |
| } | |
| }) | |
| } | |
| function drawASq(arg){ | |
| if(arg == undefined){//BASE-CASE | |
| if(LEFT == Food.left && TOP == Food.top){ | |
| canvas.getElementsByClassName("food")[0].remove(); | |
| canvasP.appendChild(drawASq("true")); | |
| Food = getFoodPosition(); | |
| drawFood(Food); | |
| } | |
| } | |
| if(LEFT >= 400){ | |
| LEFT = 0; | |
| }else if(LEFT < 0){ | |
| LEFT = 380; | |
| } | |
| if(TOP >= 400){ | |
| TOP = 0; | |
| }else if( TOP < 0){ | |
| TOP = 380; | |
| } | |
| let block = document.createElement("div"); | |
| block.classList.add("block"); | |
| switch(DIR){ | |
| case "UP" : { | |
| block.style.top = TOP+"px"; | |
| block.style.left = LEFT+"px"; | |
| TOP -= 20; | |
| break; | |
| } | |
| case "DOWN" : { | |
| block.style.top = TOP+"px"; | |
| block.style.left = LEFT+"px"; | |
| TOP += 20; | |
| break; | |
| } | |
| case "RIGHT" : { | |
| block.style.left = LEFT+"px"; | |
| block.style.top = TOP+"px"; | |
| LEFT += 20; | |
| break; | |
| } | |
| case "LEFT" : { | |
| block.style.left = LEFT+"px"; | |
| block.style.top = TOP+"px"; | |
| LEFT -= 20; | |
| break; | |
| } | |
| } | |
| return block; | |
| } | |
| let intervalRef = null; | |
| function initGame(){ | |
| intervalRef = setInterval(() => { | |
| removeRect(); | |
| drawRects(1); | |
| },(10 - SPEED )*100) | |
| } | |
| function removeRect(){ | |
| canvasP.children[0].remove(); | |
| } | |
| function clearRects(){ | |
| stopGame(); | |
| canvasP.remove(); | |
| } | |
| function stopGame(){ | |
| LEFT = 0 ; TOP = 0 ; DIR = "RIGHT"; | |
| canvas.getElementsByClassName("food")[0].remove(); | |
| clearInterval(intervalRef); | |
| } | |
| function drawRects(num){ | |
| for(var i=0;i<num ;i++){ | |
| canvasP.appendChild(drawASq()); | |
| } | |
| } | |
| function getFoodPosition(){ | |
| //400 is our LIMIT so 20*20 | |
| return { | |
| top : parseInt(Math.random() * 20) * 20, | |
| left : parseInt(Math.random() * 20) * 20 | |
| } | |
| } | |
| function drawFood(){ | |
| let block = document.createElement("div"); | |
| block.classList.add("food"); | |
| block.style.background = "red"; | |
| block.style.left = Food.left+"px"; | |
| block.style.top = Food.top+"px"; | |
| canvas.appendChild(block); | |
| } | |
| function startGame(){ | |
| if(canvas.children[0] == undefined || canvasP == null){ | |
| canvasP = canvas.appendChild(document.createElement("div")) | |
| drawRects(4); | |
| } | |
| bindEvents(); | |
| Food = getFoodPosition() | |
| drawFood() | |
| initGame(); | |
| } | |
| </script> | |
| <script id="jsbin-source-css" type="text/css"> | |
| #canvas{ | |
| border : 2px solid green; | |
| width : 400px; | |
| height : 400px; | |
| position : relative; | |
| } | |
| .block , .food{ | |
| width :20px; | |
| height :20px; | |
| background : yellow; | |
| position : absolute; | |
| border : 1px solid green; | |
| }</script> | |
| <script id="jsbin-source-javascript" type="text/javascript">const canvas = document.getElementById("canvas"); | |
| let canvasP = null , Food = {}; | |
| //SPEED 1-10 -> slow-fast | |
| let LEFT = 0 , TOP = 0 , DIR = "RIGHT" , SPEED = 6; | |
| function bindEvents(){ | |
| document.addEventListener("keyup",(ev) => { | |
| if(ev.keyCode == "38"){ //UP | |
| DIR = "UP" | |
| }else if(ev.keyCode == "40"){ //down | |
| DIR = "DOWN" | |
| }else if(ev.keyCode == "37"){ //left | |
| DIR = "LEFT" | |
| }else if(ev.keyCode == "39"){ //right | |
| DIR = "RIGHT" | |
| } | |
| }) | |
| } | |
| function drawASq(arg){ | |
| if(arg == undefined){//BASE-CASE | |
| if(LEFT == Food.left && TOP == Food.top){ | |
| canvas.getElementsByClassName("food")[0].remove(); | |
| canvasP.appendChild(drawASq("true")); | |
| Food = getFoodPosition(); | |
| drawFood(Food); | |
| } | |
| } | |
| if(LEFT >= 400){ | |
| LEFT = 0; | |
| }else if(LEFT < 0){ | |
| LEFT = 380; | |
| } | |
| if(TOP >= 400){ | |
| TOP = 0; | |
| }else if( TOP < 0){ | |
| TOP = 380; | |
| } | |
| let block = document.createElement("div"); | |
| block.classList.add("block"); | |
| switch(DIR){ | |
| case "UP" : { | |
| block.style.top = TOP+"px"; | |
| block.style.left = LEFT+"px"; | |
| TOP -= 20; | |
| break; | |
| } | |
| case "DOWN" : { | |
| block.style.top = TOP+"px"; | |
| block.style.left = LEFT+"px"; | |
| TOP += 20; | |
| break; | |
| } | |
| case "RIGHT" : { | |
| block.style.left = LEFT+"px"; | |
| block.style.top = TOP+"px"; | |
| LEFT += 20; | |
| break; | |
| } | |
| case "LEFT" : { | |
| block.style.left = LEFT+"px"; | |
| block.style.top = TOP+"px"; | |
| LEFT -= 20; | |
| break; | |
| } | |
| } | |
| return block; | |
| } | |
| let intervalRef = null; | |
| function initGame(){ | |
| intervalRef = setInterval(() => { | |
| removeRect(); | |
| drawRects(1); | |
| },(10 - SPEED )*100) | |
| } | |
| function removeRect(){ | |
| canvasP.children[0].remove(); | |
| } | |
| function clearRects(){ | |
| stopGame(); | |
| canvasP.remove(); | |
| } | |
| function stopGame(){ | |
| LEFT = 0 ; TOP = 0 ; DIR = "RIGHT"; | |
| canvas.getElementsByClassName("food")[0].remove(); | |
| clearInterval(intervalRef); | |
| } | |
| function drawRects(num){ | |
| for(var i=0;i<num ;i++){ | |
| canvasP.appendChild(drawASq()); | |
| } | |
| } | |
| function getFoodPosition(){ | |
| //400 is our LIMIT so 20*20 | |
| return { | |
| top : parseInt(Math.random() * 20) * 20, | |
| left : parseInt(Math.random() * 20) * 20 | |
| } | |
| } | |
| function drawFood(){ | |
| let block = document.createElement("div"); | |
| block.classList.add("food"); | |
| block.style.background = "red"; | |
| block.style.left = Food.left+"px"; | |
| block.style.top = Food.top+"px"; | |
| canvas.appendChild(block); | |
| } | |
| function startGame(){ | |
| if(canvas.children[0] == undefined || canvasP == null){ | |
| canvasP = canvas.appendChild(document.createElement("div")) | |
| drawRects(4); | |
| } | |
| bindEvents(); | |
| Food = getFoodPosition() | |
| drawFood() | |
| initGame(); | |
| } | |
| </script></body> | |
| </html> |
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| #canvas{ | |
| border : 2px solid green; | |
| width : 400px; | |
| height : 400px; | |
| position : relative; | |
| } | |
| .block , .food{ | |
| width :20px; | |
| height :20px; | |
| background : yellow; | |
| position : absolute; | |
| border : 1px solid green; | |
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| const canvas = document.getElementById("canvas"); | |
| let canvasP = null , Food = {}; | |
| //SPEED 1-10 -> slow-fast | |
| let LEFT = 0 , TOP = 0 , DIR = "RIGHT" , SPEED = 6; | |
| function bindEvents(){ | |
| document.addEventListener("keyup",(ev) => { | |
| if(ev.keyCode == "38"){ //UP | |
| DIR = "UP" | |
| }else if(ev.keyCode == "40"){ //down | |
| DIR = "DOWN" | |
| }else if(ev.keyCode == "37"){ //left | |
| DIR = "LEFT" | |
| }else if(ev.keyCode == "39"){ //right | |
| DIR = "RIGHT" | |
| } | |
| }) | |
| } | |
| function drawASq(arg){ | |
| if(arg == undefined){//BASE-CASE | |
| if(LEFT == Food.left && TOP == Food.top){ | |
| canvas.getElementsByClassName("food")[0].remove(); | |
| canvasP.appendChild(drawASq("true")); | |
| Food = getFoodPosition(); | |
| drawFood(Food); | |
| } | |
| } | |
| if(LEFT >= 400){ | |
| LEFT = 0; | |
| }else if(LEFT < 0){ | |
| LEFT = 380; | |
| } | |
| if(TOP >= 400){ | |
| TOP = 0; | |
| }else if( TOP < 0){ | |
| TOP = 380; | |
| } | |
| let block = document.createElement("div"); | |
| block.classList.add("block"); | |
| switch(DIR){ | |
| case "UP" : { | |
| block.style.top = TOP+"px"; | |
| block.style.left = LEFT+"px"; | |
| TOP -= 20; | |
| break; | |
| } | |
| case "DOWN" : { | |
| block.style.top = TOP+"px"; | |
| block.style.left = LEFT+"px"; | |
| TOP += 20; | |
| break; | |
| } | |
| case "RIGHT" : { | |
| block.style.left = LEFT+"px"; | |
| block.style.top = TOP+"px"; | |
| LEFT += 20; | |
| break; | |
| } | |
| case "LEFT" : { | |
| block.style.left = LEFT+"px"; | |
| block.style.top = TOP+"px"; | |
| LEFT -= 20; | |
| break; | |
| } | |
| } | |
| return block; | |
| } | |
| let intervalRef = null; | |
| function initGame(){ | |
| intervalRef = setInterval(() => { | |
| removeRect(); | |
| drawRects(1); | |
| },(10 - SPEED )*100) | |
| } | |
| function removeRect(){ | |
| canvasP.children[0].remove(); | |
| } | |
| function clearRects(){ | |
| stopGame(); | |
| canvasP.remove(); | |
| } | |
| function stopGame(){ | |
| LEFT = 0 ; TOP = 0 ; DIR = "RIGHT"; | |
| canvas.getElementsByClassName("food")[0].remove(); | |
| clearInterval(intervalRef); | |
| } | |
| function drawRects(num){ | |
| for(var i=0;i<num ;i++){ | |
| canvasP.appendChild(drawASq()); | |
| } | |
| } | |
| function getFoodPosition(){ | |
| //400 is our LIMIT so 20*20 | |
| return { | |
| top : parseInt(Math.random() * 20) * 20, | |
| left : parseInt(Math.random() * 20) * 20 | |
| } | |
| } | |
| function drawFood(){ | |
| let block = document.createElement("div"); | |
| block.classList.add("food"); | |
| block.style.background = "red"; | |
| block.style.left = Food.left+"px"; | |
| block.style.top = Food.top+"px"; | |
| canvas.appendChild(block); | |
| } | |
| function startGame(){ | |
| if(canvas.children[0] == undefined || canvasP == null){ | |
| canvasP = canvas.appendChild(document.createElement("div")) | |
| drawRects(4); | |
| } | |
| bindEvents(); | |
| Food = getFoodPosition() | |
| drawFood() | |
| initGame(); | |
| } |
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