<HTML><HEAD>
<!--
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DICE Game
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-->
<SCRIPT LANGUAGE="JavaScript"><!-- hide from old browsers
/*
THE JAVASCRIPT COOKBOOK by Erica Sadun, webrx@mindspring.com
Copyright (c)2000 by Charles River Media. All Rights Reserved.
This applet can only be re-used or modifed by license holders of the
JavaScript Cookbook CD-ROM. Credit must be given in the source
code and this copyright notice must be maintained. If you do
not hold a license to the JavaScript Cookbook, you may NOT
duplicate or modify this code for your own use.
Use at your own risk. No warranty is given or implied of the suitability
of this applet for any specific application. Neither Erica Sadun nor
Charles River Media will be held responsible for any unwanted effects
due to the use of this applet or any derivative.
*/
//------------------RANDOM NUMBERS----------------------------
var js_mult1=3141
var js_mult2=5821
var js_m1=100000000
var js_m2=10000
var js_iseed=0
var js_iseed1=0
var js_iseed2=0
// Return a Random Integer between 1 and N
// (adapted from cookbook standard 0 to N-1)
function random(n)
{
if (js_iseed == 0)
{
now = new Date()
js_iseed = now.getHours() + now.getMinutes() * 60
+ now.getSeconds() * 3600
}
js_iseed1 = js_iseed / js_m2
js_iseed2 = js_iseed % js_m2
var tmp = (((js_iseed2 * js_mult1 + js_iseed1 * js_mult2) % js_m2) *
js_m2 + (js_iseed2 * js_mult2)) % js_m1
js_iseed = (tmp + 1) % js_m1
return (Math.floor((js_iseed/js_m1) * n) + 1)
}
//----------------------PATH UTILITIES--------------------------
// Get the grandparent directory and append aDir
function getSibling(aDir)
{
var loc = ""+document.location
// get this dir, then parent
var base = loc.substring(0, loc.lastIndexOf("/"))
base = base.substring(0, base.lastIndexOf("/")+1)
return base+aDir+'/'
}
//----------------------DICE UTILITIES--------------------------
function dice(aform)
{
// Determine Number of Dice and Sides
var num = aform.number.options.selectedIndex + 1
var sides = aform.sides.options.selectedIndex + 2
// Get the Dice Image Directory
var baseRef = getSibling("GRAFX/DICE")
// Frame the body
var s1 = "<BODY BGCOLOR=\"ffffff\"><FONT SIZE=6 COLOR=\"770000\"><CENTER>"
var s2 = "</CENTER></FONT></BODY>"
// Frame the table
var t1 = "<TABLE BORDER=1><TR>"
var t2 = "</TABLE></TR>"
// Frame the specific images
var i1 = "<TD><IMG SRC=\""+baseRef+((sides > 9) ? "NDIE" : "DIE")
var i2 = ".GIF\" HEIGHT=32 WIDTH=32></TD>"
// Initialize dice window
parent.JCdice.document.open()
parent.JCdice.document.write(s1+t1)
// Init counter
var count = 0
// Get each die
for (var xx=0; xx<num; xx++) {
var yy = random(sides)
parent.JCdice.document.write(i1+yy+i2)
count += yy
}
// Conclude dice with the count
parent.JCdice.document.write(
"<TD width=32 align=center>["+count+"]</TD>"+t2+s2)
parent.JCdice.document.close()
}
<!-- done hiding --></SCRIPT></HEAD>
<BODY bgcolor="ffffff" link="0000ff" vlink="770077">
<FONT COLOR="007777"><H1><IMG SRC="../GRAFX/SPICE.JPG" WIDTH=37 HEIGHT=72
ALIGN = LEFT>Fantasy Rollplaying Dice</H1></FONT>
<BLOCKQUOTE><FONT COLOR="770000">
Many Fantasy Rollplaying (FRP) systems require the
players to cast die of varying types during the
execution of the game.
This script permits a player to select the number
and sides of dice to be played.
</FONT></BLOCKQUOTE>
<!-- Ugly PRE Formatting Follows -->
<FONT SIZE=4><FORM>
<CENTER>
<INPUT TYPE="BUTTON" VALUE=" Roll Dice "
onClick="dice(this.form)"><p>
Number of Dice:
<SELECT NAME="number" SIZE="1">
<OPTION>1
<OPTION SELECTED>2
<OPTION>3
<OPTION>4
<OPTION>5
<OPTION>6
<OPTION>7
<OPTION>8
</SELECT><p>
Sides of Dice
<SELECT NAME="sides" SIZE="1">
<OPTION>2
<OPTION>3
<OPTION>4
<OPTION>5
<OPTION SELECTED>6
<OPTION>7
<OPTION>8
<OPTION>9
<OPTION>10
<OPTION>11
<OPTION>12
<OPTION>13
<OPTION>14
<OPTION>15
<OPTION>16
<OPTION>17
<OPTION>18
<OPTION>19
<OPTION>20
<OPTION>21
<OPTION>22
<OPTION>23
<OPTION>24
</SELECT>
</CENTER></FORM>
</FONT></BLOCKQUOTE>
<BR><BR>
<FONT COLOR="007777"><H2>Discussion</H2></FONT>
<FONT SIZE=4>
Netscape needs to know the correct path to load these
graphic images. The <FONT COLOR="770000">getSibling</FONT>
function recovers the parent's path from the document
location and adds directions to a sibling or nephew
folder. It strips off the document name and then the
current directory.
</FONT>
<FONT COLOR="770000" SIZE=3><PRE>
// Get the grandparent directory and append aDir
function getSibling(aDir)
{
var loc = ""+document.location
// get this dir, then parent
var base = loc.substring(0, loc.lastIndexOf("/"))
base = base.substring(0, base.lastIndexOf("/")+1)
return base+aDir+'/'
}
<h5>Copyright ©1996 by Charles River Media, All Rights Reserved</h5>
</BODY>
</HTML>