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<!--
Winhweel.js wheel of fortune example by Douglas McKechie @ www.dougtesting.net
See website for tutorials and other documentation.
The MIT License (MIT)
Copyright (c) 2016 Douglas McKechie
Permission is hereby granted, free of charge, to any person obtaining a copy
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copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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SOFTWARE.
-->
<html>
<head>
<title>HTML5 Canvas Winning Wheel</title>
<link rel="stylesheet" href="main.css" type="text/css" />
<script type="text/javascript" src="../../Winwheel.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/gsap/latest/TweenMax.min.js"></script>
</head>
<body>
<div align="center">
<h1>Winwheel.js example wheel - wheel of fortune</h1>
<p>Here is an example of a code-drawn Wheel of Fortune looking wheel which spins to a stop with the prize won alerted to the user.</p>
<br />
<p>
With some additional coding it could be made so that the prize won is added to a total after each spin rather than
just alerting the prize to make a proper wheel of fortune like game.
</p>
<br />
<p>Choose a power setting then press the Spin button. You will be alerted to the prize won when the spinning stops.</p>
<br />
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td>
<div class="power_controls">
<br />
<br />
<table class="power" cellpadding="10" cellspacing="0">
<tr>
<th align="center">Power</th>
</tr>
<tr>
<td width="78" align="center" id="pw3" onClick="powerSelected(3);">High</td>
</tr>
<tr>
<td align="center" id="pw2" onClick="powerSelected(2);">Med</td>
</tr>
<tr>
<td align="center" id="pw1" onClick="powerSelected(1);">Low</td>
</tr>
</table>
<br />
<img id="spin_button" src="spin_off.png" alt="Spin" onClick="startSpin();" />
<br /><br />
&nbsp;&nbsp;<a href="#" onClick="resetWheel(); return false;">Play Again</a><br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(reset)
</div>
</td>
<td width="438" height="582" class="the_wheel" align="center" valign="center">
<canvas id="canvas" width="434" height="434">
<p style="{color: white}" align="center">Sorry, your browser doesn't support canvas. Please try another.</p>
</canvas>
</td>
</tr>
</table>
<script>
// Create new wheel object specifying the parameters at creation time.
var theWheel = new Winwheel({
'outerRadius' : 212, // Set outer radius so wheel fits inside the background.
'innerRadius' : 75, // Make wheel hollow so segments don't go all way to center.
'textFontSize' : 24, // Set default font size for the segments.
'textOrientation' : 'vertical', // Make text vertial so goes down from the outside of wheel.
'textAlignment' : 'outer', // Align text to outside of wheel.
'numSegments' : 24, // Specify number of segments.
'segments' : // Define segments including colour and text.
[ // font size and test colour overridden on backrupt segments.
{'fillStyle' : '#ee1c24', 'text' : '300'},
{'fillStyle' : '#3cb878', 'text' : '450'},
{'fillStyle' : '#f6989d', 'text' : '600'},
{'fillStyle' : '#00aef0', 'text' : '750'},
{'fillStyle' : '#f26522', 'text' : '500'},
{'fillStyle' : '#000000', 'text' : 'BANKRUPT', 'textFontSize' : 16, 'textFillStyle' : '#ffffff'},
{'fillStyle' : '#e70697', 'text' : '3000'},
{'fillStyle' : '#fff200', 'text' : '600'},
{'fillStyle' : '#f6989d', 'text' : '700'},
{'fillStyle' : '#ee1c24', 'text' : '350'},
{'fillStyle' : '#3cb878', 'text' : '500'},
{'fillStyle' : '#f26522', 'text' : '800'},
{'fillStyle' : '#a186be', 'text' : '300'},
{'fillStyle' : '#fff200', 'text' : '400'},
{'fillStyle' : '#00aef0', 'text' : '650'},
{'fillStyle' : '#ee1c24', 'text' : '1000'},
{'fillStyle' : '#f6989d', 'text' : '500'},
{'fillStyle' : '#f26522', 'text' : '400'},
{'fillStyle' : '#3cb878', 'text' : '900'},
{'fillStyle' : '#000000', 'text' : 'BANKRUPT', 'textFontSize' : 16, 'textFillStyle' : '#ffffff'},
{'fillStyle' : '#a186be', 'text' : '600'},
{'fillStyle' : '#fff200', 'text' : '700'},
{'fillStyle' : '#00aef0', 'text' : '800'},
{'fillStyle' : '#ffffff', 'text' : 'LOOSE TURN', 'textFontSize' : 12}
],
'animation' : // Specify the animation to use.
{
'type' : 'spinToStop',
'duration' : 8, // Duration in seconds.
'spins' : 3, // Default number of complete spins.
'callbackFinished' : alertPrize
}
});
// Vars used by the code in this page to do power controls.
var wheelPower = 0;
var wheelSpinning = false;
// -------------------------------------------------------
// Function to handle the onClick on the power buttons.
// -------------------------------------------------------
function powerSelected(powerLevel)
{
// Ensure that power can't be changed while wheel is spinning.
if (wheelSpinning == false)
{
// Reset all to grey incase this is not the first time the user has selected the power.
document.getElementById('pw1').className = "";
document.getElementById('pw2').className = "";
document.getElementById('pw3').className = "";
// Now light up all cells below-and-including the one selected by changing the class.
if (powerLevel >= 1)
{
document.getElementById('pw1').className = "pw1";
}
if (powerLevel >= 2)
{
document.getElementById('pw2').className = "pw2";
}
if (powerLevel >= 3)
{
document.getElementById('pw3').className = "pw3";
}
// Set wheelPower var used when spin button is clicked.
wheelPower = powerLevel;
// Light up the spin button by changing it's source image and adding a clickable class to it.
document.getElementById('spin_button').src = "spin_on.png";
document.getElementById('spin_button').className = "clickable";
}
}
// -------------------------------------------------------
// Click handler for spin button.
// -------------------------------------------------------
function startSpin()
{
// Ensure that spinning can't be clicked again while already running.
if (wheelSpinning == false)
{
// Based on the power level selected adjust the number of spins for the wheel, the more times is has
// to rotate with the duration of the animation the quicker the wheel spins.
if (wheelPower == 1)
{
theWheel.animation.spins = 3;
}
else if (wheelPower == 2)
{
theWheel.animation.spins = 6;
}
else if (wheelPower == 3)
{
theWheel.animation.spins = 9;
}
// Disable the spin button so can't click again while wheel is spinning.
document.getElementById('spin_button').src = "spin_off.png";
document.getElementById('spin_button').className = "";
// Begin the spin animation by calling startAnimation on the wheel object.
theWheel.startAnimation();
// Set to true so that power can't be changed and spin button re-enabled during
// the current animation. The user will have to reset before spinning again.
wheelSpinning = true;
}
}
// -------------------------------------------------------
// Function for reset button.
// -------------------------------------------------------
function resetWheel()
{
theWheel.stopAnimation(false); // Stop the animation, false as param so does not call callback function.
theWheel.rotationAngle = 0; // Re-set the wheel angle to 0 degrees.
theWheel.draw(); // Call draw to render changes to the wheel.
document.getElementById('pw1').className = ""; // Remove all colours from the power level indicators.
document.getElementById('pw2').className = "";
document.getElementById('pw3').className = "";
wheelSpinning = false; // Reset to false to power buttons and spin can be clicked again.
}
// -------------------------------------------------------
// Called when the spin animation has finished by the callback feature of the wheel because I specified callback in the parameters.
// -------------------------------------------------------
function alertPrize(indicatedSegment)
{
// Just alert to the user what happened.
// In a real project probably want to do something more interesting than this with the result.
if (indicatedSegment.text == 'LOOSE TURN')
{
alert('Sorry but you loose a turn.');
}
else if (indicatedSegment.text == 'BANKRUPT')
{
alert('Oh no, you have gone BANKRUPT!');
}
else
{
alert("You have won " + indicatedSegment.text);
}
}
</script>
</body>
</html>