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snake.html
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snake.html
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<!DOCTYPE html>
<html>
<body >
<div align="center"><canvas id="canvas" width="600px" height= "600px" ></canvas></div>
<div style=" position: absolute; top: 80px; width: 200px; height: 100px;" >
<p>Type a color:</p>
<p>.</p>
<p>Snack Color:<input value="#741b47" align="center" type="textbox" id="color1" valign="top"></input></p>
<p>Land Color:<input value="#d9d2e9" align="center" type="textbox" id="color2" valign="top"></input></p>
<p>Food Color:<input value="#999999" align="center" type="textbox" id="color3" valign="top"></input></p>
<p>Border Color<input value="gray" align="center" type="textbox" id="color4" valign="top"></input></p>
<p>
<input type="button" value="Color" align="center" id="color" valign="top" onclick="play()"></input>
<input type="button" value="Default Color" align="center" id="color" valign="top" onclick="uncolor()"></input>
</p>
<p>. </p>
<p>Tips:</p>
<p>You can type colors name<br> like "red" or colors HEX code like "#ff0000" .</p>
</div>
</body>
<head>
<meta charset="utf-8"/>
</head>
</html>
<script type="application/javascript">
var speed=30;
var height=20;
var width=20;
var unit =30;
var tail = 0;
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var snakeLength = 1;
var xPos = [];
var yPos = [];
var abilityMove = 0;
var direction="d";
var food=0;
var snakeColor = "#741b47";
var snakeBorderColor = "gray";
var planeColor = "#d9d2e9";
var planeBorderColor = "gray";
var foodColor = "#999999";
var foodBorderColor = "gray";
var xFood;
var yFood;
var start;
var everyI;
function lose(){
var alrt = snakeLength-tail+1;
alert("Your score is "+alrt+" . Play again?");
height=20;
width=20;
unit =30;
tail = 0;
canvas = document.getElementById("canvas");
ctx = canvas.getContext("2d");
snakeLength = 1;
xPos = [];
yPos = [];
abilityMove = 0;
direction="d";
food=0;
xFood;
yFood;
start;
everyI;
plane();
createVariables();
snake();
createFood();
}
function format(){
for (i = tail; i <= snakeLength; i++) {
rect((i-1)*unit,0,unit,unit,snakeColor,1,snakeBorderColor);
}
}
function color(){
var qqwe = document.getElementById("color1").value;
var aqwe = document.getElementById("color2").value;
var zqwe = document.getElementById("color3").value;
var xqwe = document.getElementById("color4").value;
snakeColor = qqwe ;
planeColor = aqwe ;
foodColor = zqwe ;
snakeBorderColor =xqwe ;
planeBorderColor = xqwe ;
foodBorderColor = xqwe ;
}
function uncolor(){
snakeColor = "#004d66" ;
planeColor = "#ccf2ff" ;
foodColor = "gray" ;
snakeBorderColor = "gray" ;
planeBorderColor = "gray" ;
foodBorderColor = "gray" ;
plane();
snake()
rect(xFood,yFood,unit,unit,foodColor,1,foodBorderColor);
}
function plane (){
for (i = 0; i < width; i++) {
for (j = 0; j < height; j++) {
rect(i*unit,j*unit,unit,unit,planeColor,1,planeBorderColor);
}
}
}
function snake(){
if(xPos[snakeLength]==0 && yPos[snakeLength]==0){
for (i = tail; i <= snakeLength; i++) {
rect((i-1)*unit,0,unit,unit,snakeColor,1,snakeBorderColor);
}
}
}
function moveRight(){
rect(xPos[snakeLength]+unit,yPos[snakeLength],unit,unit,snakeColor,1,snakeBorderColor);
rect(xPos[tail],yPos[tail],unit,unit,planeColor,1,planeBorderColor);
history();
xPos[snakeLength]=xPos[snakeLength]+unit;
}
function moveLeft(){
rect(xPos[snakeLength]-unit,yPos[snakeLength],unit,unit,snakeColor,1,snakeBorderColor);
rect(xPos[tail],yPos[tail],unit,unit,planeColor,1,planeBorderColor);
history();
xPos[snakeLength]=xPos[snakeLength]-unit;
}
function moveUp(){
rect(xPos[snakeLength],yPos[snakeLength]-unit,unit,unit,snakeColor,1,snakeBorderColor);
rect(xPos[tail],yPos[tail],unit,unit,planeColor,1,planeBorderColor);
history();
yPos[snakeLength]=yPos[snakeLength]-unit;
}
function moveDown(){
rect(xPos[snakeLength],yPos[snakeLength]+unit,unit,unit,snakeColor,1,snakeBorderColor);
rect(xPos[tail],yPos[tail],unit,unit,planeColor,1,planeBorderColor);
history();
yPos[snakeLength]=yPos[snakeLength]+unit;
}
function move(){
if(direction=="d" ){
moveRight();
}
if(direction=="a" ){
moveLeft();
}
if(direction=="w" ){
moveUp()
}
if(direction=="s" ){
moveDown();
}
}
function hitWall(){
if(direction=="a" && xPos[snakeLength]==0){
lose();
}
if(direction=="w" && yPos[snakeLength]==0){
lose();
}
if(direction=="d" && xPos[snakeLength]==(width-1)*unit){
lose();
}
if(direction=="s" && yPos[snakeLength]==(height-1)*unit){
lose();
}
}
function growUp(){
tail = tail-1;
history();
rect(xPos[tail],yPos[tail],unit,unit,snakeColor,1,snakeBorderColor);
}
function eat(){
if(direction=="d" && xPos[snakeLength]+unit==xFood && yPos[snakeLength]==yFood){
growUp();
createFood();
}
if(direction=="a" && xPos[snakeLength]-unit==xFood && yPos[snakeLength]==yFood){
growUp();
createFood();
}
if(direction=="w" && xPos[snakeLength]==xFood && yPos[snakeLength]-unit==yFood){
growUp();
createFood();
}
if(direction=="s" && xPos[snakeLength]==xFood && yPos[snakeLength]+unit==yFood){
growUp();
createFood();
}
}
function createFood(){
everyI=0;
xFood = Math.random();
yFood = Math.random();
xFood = xFood * (width-1);
yFood = yFood * (height-1);
xFood = xFood.toFixed(0)
yFood = yFood.toFixed(0)
xFood = xFood*unit;
yFood = yFood*unit;
for(i=tail; i<=snakeLength; i++){
if(xPos[i] == xFood && yPos[i] == yFood){
//alert("ERROR!!")
createFood();
return 0;
}
}
rect(xFood,yFood,unit,unit,foodColor,1,foodBorderColor);
}
function loose(){
var alrt = snakeLength-tail+1;
alert("Your score is "+alrt+". Play again?");
location.reload();
}
function hitItSelf(){
for (i = tail; i < snakeLength-1; i++) {
if(direction=="d" && xPos[snakeLength]+unit==xPos[i] && yPos[snakeLength]==yPos[i]){
lose();
break;
}
if(direction=="a" && xPos[snakeLength]-unit==xPos[i] && yPos[snakeLength]==yPos[i]){
lose();
break;
}
if(direction=="w" && xPos[snakeLength]==xPos[i] && yPos[snakeLength]-unit==yPos[i]){
lose();
break;
}
if(direction=="s" && xPos[snakeLength]==xPos[i] && yPos[snakeLength]+unit==yPos[i]){
lose();
break;
}
}
}
function history(){
for (i = tail; i < snakeLength; i++) {
xPos[i]=xPos[i+1];
yPos[i]=yPos[i+1];
}
}
function go(){
start = setInterval(function(){ main2(); }, speed);
}
function main(){
hitItSelf();
hitWall();
eat();
move();
}
function main2(){
if(abilityMove==1){
hitItSelf();
hitWall();
eat();
move();
}
}
createVariables();
function createVariables(){
for (i = tail; i <= snakeLength; ++i) {
xPos[i] = unit*(i-1);
yPos[i] = 0;
}
}
function rect(xPos,yPos,width,height,color,borderunit,borderColor){
ctx.fillStyle = color;
ctx.fillRect (xPos, yPos, width, height);
//value of the inside rectangles
ctx.strokeStyle = borderColor;
ctx.lineWidth = borderunit;
ctx.strokeRect(xPos,yPos, width,height);
//value of the outside rectangles..Border
}
function myFunction(){abilityMove=1;}
window.onkeydown = function(event) {
if (event.keyCode == 38 && direction !== "s") {
abilityMove=0;
direction="w";
main();
setTimeout(myFunction, speed);
}
if (event.keyCode == 39 && direction !== "a") {
abilityMove=0;
direction="d";
main();
setTimeout(myFunction, speed);
}
if (event.keyCode == 40 && direction !== "w") {
abilityMove=0;
direction="s";
main();
setTimeout(myFunction, speed);
}
if (event.keyCode == 37 && direction !== "d") {
abilityMove=0;
direction="a";
main();
setTimeout(myFunction, speed);
}
if (event.keyCode == 59) {
for(k=0; k<10; k++){
growUp();
}
}
}
function play(){
color();
plane();
snake()
rect(xFood,yFood,unit,unit,foodColor,1,foodBorderColor);
}
plane();
snake();
go();
createFood();
</script>