topical media & game development
game-javascript-casual-minesweeper-game.htm / htm
<!-- ONE STEP TO INSTALL MINESWEEPER:
1. Copy the coding into the BODY of your HTML document -->
<!-- STEP ONE: Paste this code into the BODY of your HTML document -->
<BODY>
<SCRIPT LANGUAGE="JavaScript">
<!-- Original: Peter Occil (poccil@yahoo.com) -->
<!-- Web Site: http://www.geocities.com/poccil -->
<!-- Based on original code by Jason Hotchkiss -->
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Begin
dir = "";
var mines = [];
var shown = [];
var gridx, gridy, maxmines;
gridx = window.prompt("Please enter a width.","8");
gridxverify();
function gridxaccept(){
gridy = window.prompt("Please enter a height.","8");
gridyverify();
}
function gridyaccept(){
maxmines = window.prompt("Please enter the number of mines you want.","10");
maxminesverify();
}
function gridxverify(){
if (gridx > 50){
alert("That width is too big. Please enter a new width.");
gridxreenter();
}
else if (gridx < 8){
alert("That width is too small. Please enter a new width.");
gridxreenter();
}
else gridxaccept();
}
function gridyverify(){
if (gridy > 50){
alert("That height is too big. Please enter a new height.");
gridyreenter();
}
else if (gridy < 8){
alert("That height is too small. Please enter a new height.");
gridyreenter();
}
else gridyaccept();
}
function maxminesverify(){
if (maxmines > 500){
alert("That number is too big. Please enter a new number of mines.");
maxminesreenter();
}
else if (maxmines < 10){
alert("That number is too small. Please enter a new number of mines.");
maxminesreenter();
}
else accepted();
}
// Functions for reentering key variables, if necessary.
function gridxreenter(){
gridx = window.prompt("Please enter a width.","8");
gridxverify();
}
function gridyreenter(){
gridy = window.prompt("Please enter a height.","8");
gridyverify();
}
function maxminesreenter(){
maxmines = window.prompt("Please enter the number of mines you want.","10");
maxminesverify();
}
function accepted(){
var squaresleft, flagsleft;
var elapsedtime;
var playing;
var placeflag;
var clicked;
}
var gridSq = gridx * 16;
var grid8 = gridSq - 128;
var grid16 = gridx - 8
var grid32 = grid16 * 8
var grid64 = grid16 * 16
var topBarWidth = 8 + grid64;
var menuBarWidth = 86 + grid64;
var wideWidth = gridx * 16;
var highHeight = gridy * 16;
var cplLeft = 6 + grid32;
var cplRight = 4 + grid32;
var totalWidth = gridSq + 32;
var tW6 = totalWidth - 6;
var ww2 = wideWidth + 2;
num=new Array(10);
for (var i=0;i<10;i++) {
num[i]=new Image()
num[i].src= "game-javascript-casual-minesweeper-"+i+".gif"
}
function keyDown(e) {
if(document.layers)
placeflag = (e.modifiers & Event.CONTROL_MASK) > 0;
else
placeflag = window.event.ctrlKey;
setStatus();
}
function keyUp(e) {
placeflag = false;
setStatus();
}
function newgame() {
// reset state arrays. mines holds the position of each mine. shown keeps
// track of the image shown at each grid location
var y;
for(y = 0; y < gridy; ++y)
{
mines[y] = [false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false];
shown[y] = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
}
// Place the mines, making sure positions are unique
var m;
for(m = 0; m < maxmines; ++m) {
var x,y;
do {
x = Math.floor(Math.random() * gridx);
y = Math.floor(Math.random() * gridy);
} while(mines[y][x]);
mines[y][x] = true;
}
// initialize game variables
squaresleft = gridy * gridx;
flagsleft = maxmines;
elapsedtime = 0;
playing = true;
clicked = false
placeflag = false;
// insert the grid into the document
buildgrid();
// Set up keypress handlers
if (document.layers)
window.captureEvents(Event.KEYDOWN | Event.KEYUP);
window.onKeyDown = keyDown;
window.onKeyUp = keyUp;
// start the clock
setInterval("ticker()", 1000);
}
// clock tick handler
function ticker() {
if (playing) {
if (clicked) {
elapsedtime++;
setStatus();
}
}
}
// Refreshing control panel
function setStatus() {
document.images.elapse3.src=num[elapsedtime-(Math.floor(elapsedtime/10))*10].src;
document.images.elapse2.src=num[Math.floor((elapsedtime-(Math.floor(elapsedtime/100))*100)/10)].src;
document.images.elapse1.src=num[Math.floor(elapsedtime/100)].src;
document.images.flag3.src=num[flagsleft-(Math.floor(flagsleft/10))*10].src;
document.images.flag2.src=num[Math.floor((flagsleft-(Math.floor(flagsleft/100))*100)/10)].src;
document.images.flag1.src=num[Math.floor(flagsleft/100)].src;
}
//function to insert all the IMG tags into the document
function buildgrid() {
document.write("<!-- Window --><DIV align=center> "
+"<!-- Top Bar --> <table width="
+ totalWidth
+" border=0 cells"
+"pacing=0 cellpadding=0> <tr bgcolor=#bbbbbb heigh"
+"t=1> <td width=1 bgcolor=#bbbbbb></td><td width"
+"=1 bgcolor=#bbbbbb></td> <td width=1 bgcolor=#bbb"
+"bbb></td><td width="
+ tW6
+" bgcolor=#bbbbbb></td> <t"
+"d width=1 bgcolor=#bbbbbb></td> <td width=1 bgcol"
+"or=#bbbbbb></td> <td width=1 bgcolor=#000000></td"
+"></tr><tr height=1><td width=1 bgcolor=#bbbb"
+"bb></td><td width=1 bgcolor=#ffffff></td><td w"
+"idth=1 bgcolor=#ffffff></td><td bgcolor=#ffffff>"
+"</td><td width=1 bgcolor=#ffffff></td><td widt"
+"h=1 bgcolor=#888888></td><td width=1 bgcolor=#00"
+"0000></td></tr><tr height=1><td width=1 bgco"
+"lor=#bbbbbb></td><td width=1 bgcolor=#ffffff></t"
+"d><td width=1 bgcolor=#bbbbbb></td><td bgcolor"
+"=#bbbbbb></td><td width=1 bgcolor=#bbbbbb></td> "
+"<td width=1 bgcolor=#888888></td><td width=1 bg"
+"color=#000000></td></tr></table><!-- Title -->"
+"<table border=0 cellspacing=0 cellpadding=0><t"
+"r height=18><td width=1 bgcolor=#bbbbbb></td><"
+"td width=1 bgcolor=#ffffff></td><td width=1 bgco"
+"lor=#bbbbbb></td><td bgcolor=#000088><img src='game-javascript-casual-minesweeper-t"
+"itle.gif'><img src='game-javascript-casual-minesweeper-a.gif' height=1 width="
+ topBarWidth
+" name="
+"'titleBarEmptySpace'></td><td><img src='game-javascript-casual-minesweeper-buttons."
+"gif'></td><td width=1 bgcolor=#bbbbbb></td><td"
+" width=1 bgcolor=#888888></td><td width=1 bgcolo"
+"r=#000000></td></tr></table><!-- Menu Bar --> "
+"<table border=0 cellspacing=0 cellpadding=0> <tr"
+" height=20 bgcolor=#bbbbbb> <td width=1 bgcolor=#"
+"bbbbbb></td> <td><img src='game-javascript-casual-minesweeper-menu.gif'></td><td> <"
+"img src='game-javascript-casual-minesweeper-a.gif' height=1 width="
+ menuBarWidth
+" name='menuBarEmp"
+"tySpace'></td> <td width=1 bgcolor=#bbbbbb></td> "
+"<td width=1 bgcolor=#888888></td> <td width=1 bg"
+"color=#000000></td> </tr></table> <!-- Mine Fiel"
+"d --> <table border=0 cellspacing=0 cellpadding=0"
+"> <tr height=11 width=160> <td width=1 bgcolor=#"
+"bbbbbb></td> <td width=1 bgcolor=#ffffff></td> <"
+"td width=1 bgcolor=#bbbbbb></td> <td><img src='game-javascript-casual-minesweeper-tl"
+".gif'></td> <td><img src='game-javascript-casual-minesweeper-header.gif' width="
+ ww2
+" height=11></td> <td><img src='game-javascript-casual-minesweeper-tr.gif'></td><td><"
+"img src='game-javascript-casual-minesweeper-right.gif' width=5 height=11></td> </tr>"
+"</table><table width="
+ totalWidth
+" border=0 cellspacing=0 cellpadd"
+"ing=0> <tr height=33> <td width=1 bgcolor=#bbbbb"
+"b></td> <td width=1 bgcolor=#ffffff></td> <td wi"
+"dth=1 bgcolor=#bbbbbb></td> <td><img src='game-javascript-casual-minesweeper-cplleft"
+".gif' height=33 width=11></td> <td> <!-- Control"
+" Panel --> <table width="
+ ww2
+" border=0 cellspacing="
+"0 cellpadding=0><tr height=4 width="
+ ww2
+"><td bgcolor=#bbbbbb"
+"></td></tr></table> <table width="
+ ww2
+" border=0 cel"
+"lspacing=0 cellpadding=0><tr height=26><td "
+"width=5 bgcolor=#bbbbbb></td><td><!-- Mines Remai"
+"ning --> <table width=41 border=0 cellspacing=0 c"
+"ellpadding=0><tr bgcolor=#888888><td></td><td>"
+"</td><td></td> <td></td><td></td><td></td> <td><"
+"/td><td></td> <td width=1 bgcolor=#bbbbbb></td></"
+"tr> <tr bgcolor=#000000> <td width=1 bgcolor=#88"
+"8888></td> <td></td><td></td> <td></td><td></td>"
+"<td></td><td></td><td></td> <td width=1 bgcolor"
+"=#ffffff></td></tr> <tr bgcolor=#000000> <td wid"
+"th=1 bgcolor=#888888></td> <td width=1 bgcolor=#0"
+"00000></td> <td><img src='game-javascript-casual-minesweeper-0.gif' name='flag1'></t"
+"d><td width=2></td><td><img src='game-javascript-casual-minesweeper-1.gif' name='"
+"flag2'></td><td width=2></td><td><img src='game-javascript-casual-minesweeper-0.g"
+"if' name='flag3'></td><td width=1></td> <td wid"
+"th=1 bgcolor=#ffffff></td></tr> <tr bgcolor=#0000"
+"00> <td width=1 bgcolor=#888888></td> <td></td><"
+"td></td> <td></td><td></td><td></td> <td></td><t"
+"d></td> <td width=1 bgcolor=#ffffff></td></tr> <"
+"tr bgcolor=#ffffff> <td width=1 bgcolor=#bbbbbb><"
+"/td> <td></td><td></td> <td></td><td></td><td></"
+"td> <td></td><td></td> <td></td></tr><"
+"tr bgcolor=#bbbbbb> <td width=1 bgcolor=#bbbbbb><"
+"/td> <td></td><td></td> <td></td><td></td><td></"
+"td> <td></td><td></td> <td></td></tr></table><!--"
+" End Mines Remaini"
+"ng --> </td> <td bgcolor=#bbbbbb><img height=1 "
+"src='a.gif' width=" + cplLeft + "name='cplLeft'>"
+"<td><img src='game-javascript-casual-minesweeper-btnsmile.gif' name='condition' onmo"
+"usedown='document.images.condition.s"
+'rc="game-javascript-casual-minesweeper-btnsmil2.gif"'
+";' onmouseu"
+"p='document.images.condition.s"
+'rc="game-javascript-casual-minesweeper-btnsmile.gif";location.reload();'
+";'></td> <td width=4 bgcolor=#bbbbbb>"
+"<img height=1 src='game-javascript-casual-minesweeper-a.gif'"
+" width=" + cplRight + ">"
+"</td> <td> <!-- Elapsed Time --> <table width=4"
+"1 border=0 cellspacing=0 cellpadding=0> <tr bgcol"
+"or=#888888> <td></td><td></td><td></td> <td></td"
+"><td></td><td></td><td></td><td></td> <td width"
+"=1 bgcolor=#bbbbbb></td></tr> <tr bgcolor=#000000"
+"> <td width=1 bgcolor=#888888></td> <td></td><td"
+"></td> <td></td><td></td><td></td> <td></td><td>"
+"</td> <td width=1 bgcolor=#ffffff></td></tr> <tr"
+" bgcolor=#000000> <td width=1 bgcolor=#888888></t"
+"d> <td width=1 bgcolor=#000000></td> <td><img sr"
+"c='game-javascript-casual-minesweeper-0.gif' name='elapse1'></td> <td width=2></td> "
+"<td><img src='game-javascript-casual-minesweeper-0.gif' name='elapse2'></td> <td wi"
+"dth=2></td> <td><img src='game-javascript-casual-minesweeper-0.gif' name='elapse3'><"
+"/td> <td width=1></td> <td width=1 bgcolor=#ffff"
+"ff></td></tr> <tr bgcolor=#000000> <td width=1 b"
+"gcolor=#888888></td> <td></td><td></td> <td></td"
+"><td></td><td></td> <td></td><td></td> <td width"
+"=1 bgcolor=#ffffff></td></tr> <tr bgcolor=#ffffff"
+"> <td width=1 bgcolor=#bbbbbb></td> <td></td><td"
+"></td> <td></td><td></td><td></td> <td></td><td>"
+"</td> <td></td></tr> <"
+"tr bgcolor=#bbbbbb> <td width=1 bgcolor=#bbbbbb><"
+"/td> <td></td><td></td> <td></td><td></td><td></"
+"td> <td></td><td></td> <td></td></tr> "
+"</table> <!-- End Elapsed Time --> </td> <td "
+"width=7 bgcolor=#bbbbbb></td></tr></table><table "
+"width="
+ ww2
+" border=0 cellspacing=0 cellpadding=0> "
+"<tr height=3><td bgcolor=#bbbbbb></td></tr></table"
+"> <!-- End Control Panel --> </td> <td><img src"
+"='game-javascript-casual-minesweeper-cplright.gif' height=33 width=11></td> <td><img"
+" src='game-javascript-casual-minesweeper-right.gif' height=33 width=5></td> </tr></t"
+"able><!-- Separator --> <table border=0 cells"
+"pacing=0 cellpadding=0> <tr height=11 width="
+ totalWidth
+"> "
+"<td width=1 bgcolor=#bbbbbb></td> <td width=1 bg"
+"color=#ffffff></td> <td width=1 bgcolor=#bbbbbb><"
+"/td> <td><img src='ml.gif'></td><td><img src='"
+"game-javascript-casual-minesweeper-separatr.gif' width="
+ wideWidth
+" height=11></td><td><img"
+" src='mr.gif'></td><td><img src='game-javascript-casual-minesweeper-right.gif' width"
+"=5></td></tr></table> <!-- Mine Field --> <table"
+" width="
+ totalWidth
+" border=0 cellspacing=0 cellpadding=0> "
+"<tr height="
+ highHeight
+"> <td width=1 bgcolor=#bbbbbb></td>"
+" <td width=1 bgcolor=#ffffff></td> <td width=1 b"
+"gcolor=#bbbbbb></td> <td><img src='game-javascript-casual-minesweeper-fielside.gif' "
+"width=12 height="
+ highHeight
+"></td> <td> <!-- Game Field -"
+"->");
var s = "";
var x, y;
for(y = 0; y < gridy; ++y) {
for(x = 0; x < gridx; ++x) {
s = s + '<a href="javascript:gridclick(' + y + ',' + x +');">' +
'<img src="' + dir + 'game-javascript-casual-minesweeper-sqt0.gif" name="grd'+y+'_'+x+'" border=0></a>'
}
s = s + "<br>";
}
document.write(s);
document.write('<!-- End Game Field --></td><td'
+' valign=right><img src="game-javascript-casual-minesweeper-fielside.gif" width=12 heig'
+'ht='
+ highHeight
+'></td> <td valign=right><img src="game-javascript-casual-minesweeper-right.gif'
+'" width=5 height='
+ highHeight
+'></td></tr></table><!-- En'
+'d Mine Field --><!-- Footer --><table width='
+ totalWidth
+' border=0 cellspacing=0 cellpadding=0><tr heigh'
+'t=12> <td width=1 bgcolor=#bbbbbb></td> <td widt'
+'h=1 bgcolor=#ffffff></td> <td width=1 bgcolor=#bb'
+'bbbb></td> <td><img src="game-javascript-casual-minesweeper-bl.gif"></td> <td><img '
+'src="game-javascript-casual-minesweeper-footer.gif" width='
+ wideWidth
+' height=12></td> <td><i'
+'mg src="game-javascript-casual-minesweeper-br.gif"></td> <td><img src="game-javascript-casual-minesweeper-right.gif" he'
+'ight=12></td></tr></table><!-- Bottom --> <ta'
+'ble width='
+ totalWidth
+' border=0 cellspacing=0 cellpadding=0'
+'> <tr bgcolor=#bbbbbb height=1> <td width=1 bgco'
+'lor=#bbbbbb></td><td width=1 bgcolor=#ffffff></t'
+'d> <td width=1 bgcolor=#bbbbbb></td><td width='
+ tW6
+' bgcolor=#bbbbbb></td><td width=1 bgcolor=#bbb'
+'bbb></td> <td width=1 bgcolor=#888888></td> <td '
+'width=1 bgcolor=#000000></td> </tr> <tr height=1'
+'> <td width=1 bgcolor=#bbbbbb></td> <td width=1 '
+'bgcolor=#888888></td> <td width=1 bgcolor=#888888'
+'></td> <td bgcolor=#888888></td> <td width=1 bgc'
+'olor=#888888></td> <td width=1 bgcolor=#888888></'
+'td> <td width=1 bgcolor=#000000></td> </tr> <tr'
+' height=1> <td width=1 bgcolor=#000000></td> <td'
+' width=1 bgcolor=#000000></td> <td width=1 bgcolo'
+'r=#000000></td> <td bgcolor=#000000></td> <td wi'
+'dth=1 bgcolor=#000000></td> <td width=1 bgcolor=#'
+'000000></td> <td width=1 bgcolor=#000000></td> <'
+'/tr></table> </div>');
}
// Function to calculate the number of mines adjacent to a grid location
function surrounding(y,x) {
var count = 0;
if (y > 0 && x > 0 && mines[y-1][x-1]) count++;
if (y > 0 && mines[y-1][x]) count++;
if (y > 0 && x < gridx-1 && mines[y-1][x+1]) count++;
if (x > 0 && mines[y][x-1]) count++;
if (x < gridx-1 && mines[y][x+1]) count++;
if (y < gridy-1 && x > 0 && mines[y+1][x-1]) count++;
if (y < gridy-1 && mines[y+1][x]) count++;
if (y < gridy-1 && x < gridx-1 && mines[y+1][x+1]) count++;
return count;
}
// Recursive function to 'roll back' the grid when user clicks on a tile
// with no surrounding mines
function rollback(y,x) {
if (y >= 0 && y < gridy && x >=0 && x < gridx) {
if (shown[y][x] != 3) {
var c = surrounding(y,x);
shown[y][x] = 3;
squaresleft--;
document.images["grd"+y+"_"+x].src = dir + "game-javascript-casual-minesweeper-sq"+c+".gif";
if (c == 0) {
rollback(y-1,x-1);
rollback(y-1,x);
rollback(y-1,x+1);
rollback(y,x-1);
rollback(y,x+1);
rollback(y+1,x-1);
rollback(y+1,x);
rollback(y+1,x+1);
}
}
}
}
// Function called when player steps on a mine. All mine locations are uncovered
function dead() {
var y, x;
for(y = 0; y < gridy; ++y) {
for(x = 0; x < gridx; ++x) {
if (mines[y][x]) {
if (shown[y][x] != 1) {
document.images["grd"+y+"_"+x].src = dir + "game-javascript-casual-minesweeper-mine.gif";
}
}
else if (shown[y][x] == 1) {
document.images["grd"+y+"_"+x].src = dir + "game-javascript-casual-minesweeper-nomine.gif";
}
}
}
document.images.condition.src = dir + "game-javascript-casual-minesweeper-btndead.gif";
playing = false;
clicked = false;
}
// handler called whenever the grid is clicked
function gridclick(y, x) {
if (playing) {
clicked = true;
if (placeflag) {
if (shown[y][x] < 3) {
var s = shown[y][x];
var change = true;
if (s == 1) {
flagsleft++;
squaresleft++;
}
if (flagsleft == 0 && s == 0) {
change = false;
}
else {
if (s == 2) s = 0;
else s++;
if (s == 1) {
flagsleft--;
squaresleft--;
}
}
if (change) {
shown[y][x] = s;
document.images["grd"+y+"_"+x].src = dir + "game-javascript-casual-minesweeper-sqt"+s+".gif";
setStatus();
}
if (squaresleft == 0) {
document.images.condition.src = dir + "game-javascript-casual-minesweeper-btncool.gif";
playing = false;
}
}
}
// check not flagged as a mine
else if (shown[y][x] != 1) {
if (mines[y][x]) {
document.images["grd"+y+"_"+x].src = dir + "game-javascript-casual-minesweeper-minered.gif";
dead();
}
else {
rollback(y,x);
}
}
}
}
// Start the game
newgame();
// End -->
</script>
<p><center>
<font face="arial, helvetica" size="-2">Free JavaScripts provided<br>
by <a href="http://javascriptsource.com">The JavaScript Source</a></font>
</center><p>
<!-- Script Size: 15.73 KB -->
(C) Æliens
20/2/2008
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.
