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<h1 class="title">snake.js Example File</h1>
<span class="small-subtitle">demos/declarative/snake/qml/snake/content/snake.js</span>
<!-- $$$demos/declarative/snake/qml/snake/content/snake.js-description -->
<div class="descr"> <a name="details"></a>
<pre class="js"> var <span class="name">snake</span> = new <span class="name">Array</span>;
var <span class="name">board</span> = new <span class="name">Array</span>;
var <span class="name">links</span> = new <span class="name">Array</span>;
var <span class="name">scheduledDirections</span> = new <span class="name">Array</span>;
var <span class="name">numRows</span> = <span class="number">1</span>;
var <span class="name">numColumns</span> = <span class="number">1</span>;
var <span class="name">linkComponent</span> = <span class="name">Qt</span>.<span class="name">createComponent</span>(<span class="string">"content/Link.qml"</span>); <span class="comment">// XXX should resolve relative to script, not component</span>
var <span class="name">cookieComponent</span> = <span class="name">Qt</span>.<span class="name">createComponent</span>(<span class="string">"content/Cookie.qml"</span>);
var <span class="name">cookie</span>;
var <span class="name">linksToGrow</span> = <span class="number">0</span>;
var <span class="name">linksToDie</span> = <span class="number">0</span>;
var <span class="name">waitForCookie</span> = <span class="number">0</span>;
var <span class="name">growType</span> = <span class="number">0</span>;
var <span class="name">skullMovementsBeforeDirectionChange</span> = <span class="number">0</span>;
<span class="keyword">function</span> <span class="name">rand</span>(<span class="name">n</span>)
{
<span class="keyword">return</span> (<span class="name">Math</span>.<span class="name">floor</span>(<span class="name">Math</span>.<span class="name">random</span>() <span class="operator">*</span> <span class="name">n</span>));
}
<span class="keyword">function</span> <span class="name">scheduleDirection</span>(<span class="name">dir</span>)
{
<span class="keyword">if</span> (<span class="name">state</span> <span class="operator">==</span> <span class="string">"starting"</span>) {
<span class="name">direction</span> <span class="operator">=</span> <span class="name">dir</span>;
<span class="name">headDirection</span> <span class="operator">=</span> <span class="name">direction</span>;
<span class="name">head</span>.<span class="name">rotation</span> <span class="operator">=</span> <span class="name">headDirection</span>;
} else <span class="keyword">if</span> (<span class="name">state</span> <span class="operator">==</span> <span class="string">"running"</span>){
<span class="name">direction</span> <span class="operator">=</span> <span class="name">dir</span>;
<span class="keyword">if</span>(<span class="name">scheduledDirections</span>[<span class="name">scheduledDirections</span>.<span class="name">length</span><span class="operator">-</span><span class="number">1</span>]<span class="operator">!=</span><span class="name">direction</span>)
<span class="name">scheduledDirections</span>.<span class="name">push</span>(<span class="name">direction</span>);
}
}
<span class="keyword">function</span> <span class="name">startNewGame</span>()
{
<span class="keyword">if</span> (<span class="name">state</span> <span class="operator">==</span> <span class="string">"starting"</span>) {
<span class="keyword">return</span>;
}
<span class="keyword">if</span> (<span class="name">activeGame</span>) {
<span class="name">endGame</span>();
<span class="name">startNewGameTimer</span>.<span class="name">running</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="keyword">return</span>;
}
<span class="name">state</span> <span class="operator">=</span> <span class="string">"starting"</span>;
<span class="name">numRows</span> <span class="operator">=</span> <span class="name">numRowsAvailable</span>;
<span class="name">numColumns</span> <span class="operator">=</span> <span class="name">numColumnsAvailable</span>;
<span class="name">board</span> <span class="operator">=</span> new <span class="name">Array</span>(<span class="name">numRows</span> <span class="operator">*</span> <span class="name">numColumns</span>);
<span class="name">snake</span> <span class="operator">=</span> new <span class="name">Array</span>;
<span class="name">scheduledDirections</span> <span class="operator">=</span> new <span class="name">Array</span>;
<span class="name">growType</span> <span class="operator">=</span> <span class="number">0</span>;
<span class="name">skull</span>.<span class="name">z</span> <span class="operator">=</span> <span class="name">numRows</span> <span class="operator">*</span> <span class="name">numColumns</span> <span class="operator">+</span> <span class="number">1</span>;
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">i</span> = <span class="number">0</span>; <span class="name">i</span> <span class="operator"><</span> <span class="name">numRows</span> <span class="operator">*</span> <span class="name">numColumns</span>; ++<span class="name">i</span>) {
<span class="keyword">if</span> (<span class="name">i</span> <span class="operator"><</span> <span class="name">links</span>.<span class="name">length</span>) {
var <span class="name">link</span> = <span class="name">links</span>[<span class="name">i</span>];
<span class="name">link</span>.<span class="name">spawned</span> <span class="operator">=</span> <span class="number">false</span>;
<span class="name">link</span>.<span class="name">dying</span> <span class="operator">=</span> <span class="number">false</span>;
} else {
<span class="keyword">if</span>(<span class="name">linkComponent</span>.<span class="name">status</span> <span class="operator">!=</span> <span class="name">Component</span>.<span class="name">Ready</span>) {
<span class="keyword">if</span>(<span class="name">linkComponent</span>.<span class="name">status</span> <span class="operator">==</span> <span class="name">Component</span>.<span class="name">Error</span>)
<span class="name">console</span>.<span class="name">log</span>(<span class="name">linkComponent</span>.<span class="name">errorString</span>());
else
<span class="name">console</span>.<span class="name">log</span>(<span class="string">"Still loading linkComponent"</span>);
<span class="keyword">continue</span>;<span class="comment">//TODO: Better error handling?</span>
}
var <span class="name">link</span> = <span class="name">linkComponent</span>.<span class="name">createObject</span>(<span class="name">playfield</span>);
<span class="name">link</span>.<span class="name">z</span> <span class="operator">=</span> <span class="name">numRows</span> <span class="operator">*</span> <span class="name">numColumns</span> <span class="operator">+</span> <span class="number">1</span> <span class="operator">-</span> <span class="name">i</span>;
<span class="name">link</span>.<span class="name">type</span> <span class="operator">=</span> <span class="name">i</span> <span class="operator">==</span> <span class="number">0</span> ? <span class="number">2</span> : <span class="number">0</span>;
<span class="name">link</span>.<span class="name">spawned</span> <span class="operator">=</span> <span class="number">false</span>;
<span class="name">link</span>.<span class="name">dying</span> <span class="operator">=</span> <span class="number">false</span>;
<span class="name">links</span>.<span class="name">push</span>(<span class="name">link</span>);
}
}
<span class="name">head</span> <span class="operator">=</span> <span class="name">links</span>[<span class="number">0</span>];
<span class="name">snake</span>.<span class="name">push</span>(<span class="name">head</span>);
<span class="name">head</span>.<span class="name">row</span> <span class="operator">=</span> <span class="name">numRows</span><span class="operator">/</span><span class="number">2</span> <span class="operator">-</span><span class="number">1</span>;
<span class="name">head</span>.<span class="name">column</span> <span class="operator">=</span> <span class="name">numColumns</span><span class="operator">/</span><span class="number">2</span> <span class="operator">-</span><span class="number">1</span>;
<span class="name">head</span>.<span class="name">spawned</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="name">linksToGrow</span> <span class="operator">=</span> <span class="number">5</span>;
<span class="name">linksToDie</span> <span class="operator">=</span> <span class="number">0</span>;
<span class="name">waitForCookie</span> <span class="operator">=</span> <span class="number">5</span>;
<span class="name">score</span> <span class="operator">=</span> <span class="number">0</span>;
<span class="name">startHeartbeatTimer</span>.<span class="name">running</span> <span class="operator">=</span> <span class="number">true</span>;
}
<span class="keyword">function</span> <span class="name">endGame</span>()
{
<span class="name">activeGame</span> <span class="operator">=</span> <span class="number">false</span>;
<span class="keyword">for</span>(<span class="keyword">var</span> <span class="name">i</span> in <span class="name">snake</span>)
<span class="name">snake</span>[<span class="name">i</span>].<span class="name">dying</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="keyword">if</span> (<span class="name">cookie</span>) {
<span class="name">cookie</span>.<span class="name">dying</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="name">cookie</span> <span class="operator">=</span> <span class="number">0</span>;
}
<span class="name">lastScore</span> <span class="operator">=</span> <span class="name">score</span>;
<span class="name">highScores</span>.<span class="name">saveScore</span>(<span class="name">lastScore</span>);
<span class="name">state</span> <span class="operator">=</span> <span class="string">""</span>;
}
<span class="keyword">function</span> <span class="name">move</span>() {
<span class="keyword">if</span> (!<span class="name">head</span>)
<span class="keyword">return</span>;
var <span class="name">dir</span> = <span class="name">direction</span>;
<span class="keyword">if</span> (<span class="name">scheduledDirections</span>.<span class="name">length</span>) {
<span class="name">dir</span> <span class="operator">=</span> <span class="name">scheduledDirections</span>.<span class="name">shift</span>();
}
<span class="keyword">if</span> (<span class="name">state</span> <span class="operator">==</span> <span class="string">"starting"</span>) {
var <span class="name">turn</span> = (<span class="name">dir</span> <span class="operator">-</span> <span class="name">headDirection</span>);
<span class="name">head</span>.<span class="name">rotation</span> <span class="operator">+=</span> <span class="name">turn</span> <span class="operator">==</span> -<span class="number">3</span> ? <span class="number">1</span> : (<span class="name">turn</span> <span class="operator">==</span> <span class="number">3</span> ? -<span class="number">1</span> : <span class="name">turn</span> );
<span class="name">headDirection</span> <span class="operator">=</span> <span class="name">dir</span>;
<span class="keyword">return</span>;
}
var <span class="name">row</span> = <span class="name">head</span>.<span class="name">row</span>;
var <span class="name">column</span> = <span class="name">head</span>.<span class="name">column</span>;
<span class="keyword">if</span> (<span class="name">dir</span> <span class="operator">==</span> <span class="number">0</span>) {
<span class="name">row</span> <span class="operator">=</span> <span class="name">row</span> <span class="operator">-</span> <span class="number">1</span>;
} else <span class="keyword">if</span> (<span class="name">dir</span> <span class="operator">==</span> <span class="number">1</span>) {
<span class="name">column</span> <span class="operator">=</span> <span class="name">column</span> <span class="operator">+</span> <span class="number">1</span>
} else <span class="keyword">if</span> (<span class="name">dir</span> <span class="operator">==</span> <span class="number">2</span>) {
<span class="name">row</span> <span class="operator">=</span> <span class="name">row</span> <span class="operator">+</span> <span class="number">1</span>;
} else <span class="keyword">if</span> (<span class="name">dir</span> <span class="operator">==</span> <span class="number">3</span>) {
<span class="name">column</span> <span class="operator">=</span> <span class="name">column</span> <span class="operator">-</span> <span class="number">1</span>;
}
<span class="comment">//validate the new position</span>
<span class="keyword">if</span> (<span class="name">row</span> <span class="operator"><</span> <span class="number">0</span> <span class="operator">||</span> <span class="name">row</span> <span class="operator">>=</span> <span class="name">numRows</span>
<span class="operator">||</span> <span class="name">column</span> <span class="operator"><</span> <span class="number">0</span> <span class="operator">||</span> <span class="name">column</span> <span class="operator">>=</span> <span class="name">numColumns</span>
<span class="operator">||</span> (<span class="name">row</span> <span class="operator">==</span> <span class="name">skull</span>.<span class="name">row</span> <span class="operator">&&</span> <span class="name">column</span> <span class="operator">==</span> <span class="name">skull</span>.<span class="name">column</span>)
<span class="operator">||</span> !<span class="name">isFree</span>(<span class="name">row</span>, <span class="name">column</span>)) {
var <span class="name">turn</span> = (<span class="name">dir</span> <span class="operator">-</span> <span class="name">headDirection</span>);
<span class="name">head</span>.<span class="name">rotation</span> <span class="operator">+=</span> <span class="name">turn</span> <span class="operator">==</span> -<span class="number">3</span> ? <span class="number">1</span> : (<span class="name">turn</span> <span class="operator">==</span> <span class="number">3</span> ? -<span class="number">1</span> : <span class="name">turn</span> );
<span class="name">headDirection</span> <span class="operator">=</span> <span class="name">dir</span>;
<span class="name">endGame</span>();
<span class="keyword">return</span>;
}
var <span class="name">newLink</span>;
<span class="keyword">if</span> (<span class="name">linksToGrow</span> <span class="operator">></span> <span class="number">0</span>) {
--<span class="name">linksToGrow</span>;
<span class="name">newLink</span> <span class="operator">=</span> <span class="name">links</span>[<span class="name">snake</span>.<span class="name">length</span>];
<span class="name">newLink</span>.<span class="name">spawned</span> <span class="operator">=</span> <span class="number">false</span>;
<span class="name">newLink</span>.<span class="name">rotation</span> <span class="operator">=</span> <span class="name">snake</span>[<span class="name">snake</span>.<span class="name">length</span><span class="operator">-</span><span class="number">1</span>].<span class="name">rotation</span>;
<span class="name">newLink</span>.<span class="name">type</span> <span class="operator">=</span> <span class="name">growType</span>;
<span class="name">newLink</span>.<span class="name">dying</span> <span class="operator">=</span> <span class="number">false</span>;
<span class="name">snake</span>.<span class="name">push</span>(<span class="name">newLink</span>);
} else {
var <span class="name">lastLink</span> = <span class="name">snake</span>[<span class="name">snake</span>.<span class="name">length</span><span class="operator">-</span><span class="number">1</span>];
<span class="name">board</span>[<span class="name">lastLink</span>.<span class="name">row</span> <span class="operator">*</span> <span class="name">numColumns</span> <span class="operator">+</span> <span class="name">lastLink</span>.<span class="name">column</span>] <span class="operator">=</span> <span class="name">undefined</span>;
}
<span class="keyword">if</span> (<span class="name">waitForCookie</span> <span class="operator">></span> <span class="number">0</span>) {
<span class="keyword">if</span> (--<span class="name">waitForCookie</span> <span class="operator">==</span> <span class="number">0</span>)
<span class="name">createCookie</span>(<span class="name">cookie</span>? (<span class="name">cookie</span>.<span class="name">value</span><span class="operator">+</span><span class="number">1</span>) : <span class="number">1</span>);
}
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">i</span> = <span class="name">snake</span>.<span class="name">length</span><span class="operator">-</span><span class="number">1</span>; <span class="name">i</span> <span class="operator">></span> <span class="number">0</span>; --<span class="name">i</span>) {
<span class="name">snake</span>[<span class="name">i</span>].<span class="name">row</span> <span class="operator">=</span> <span class="name">snake</span>[<span class="name">i</span><span class="operator">-</span><span class="number">1</span>].<span class="name">row</span>;
<span class="name">snake</span>[<span class="name">i</span>].<span class="name">column</span> <span class="operator">=</span> <span class="name">snake</span>[<span class="name">i</span><span class="operator">-</span><span class="number">1</span>].<span class="name">column</span>;
<span class="name">snake</span>[<span class="name">i</span>].<span class="name">rotation</span> <span class="operator">=</span> <span class="name">snake</span>[<span class="name">i</span><span class="operator">-</span><span class="number">1</span>].<span class="name">rotation</span>;
}
<span class="keyword">if</span> (<span class="name">newLink</span>) {
<span class="name">newLink</span>.<span class="name">spawned</span> <span class="operator">=</span> <span class="number">true</span>;
}
<span class="comment">// move the head</span>
<span class="name">head</span>.<span class="name">row</span> <span class="operator">=</span> <span class="name">row</span>;
<span class="name">head</span>.<span class="name">column</span> <span class="operator">=</span> <span class="name">column</span>;
<span class="name">board</span>[<span class="name">row</span> <span class="operator">*</span> <span class="name">numColumns</span> <span class="operator">+</span> <span class="name">column</span>] <span class="operator">=</span> <span class="name">head</span>;
var <span class="name">turn</span> = (<span class="name">dir</span> <span class="operator">-</span> <span class="name">headDirection</span>);
<span class="name">head</span>.<span class="name">rotation</span> <span class="operator">+=</span> <span class="name">turn</span> <span class="operator">==</span> -<span class="number">3</span> ? <span class="number">1</span> : (<span class="name">turn</span> <span class="operator">==</span> <span class="number">3</span> ? -<span class="number">1</span> : <span class="name">turn</span> );
<span class="name">headDirection</span> <span class="operator">=</span> <span class="name">dir</span>;
var <span class="name">value</span> = <span class="name">testCookie</span>(<span class="name">row</span>, <span class="name">column</span>);
<span class="keyword">if</span> (<span class="name">value</span> <span class="operator">></span> <span class="number">0</span>) {
<span class="name">linksToGrow</span> <span class="operator">+=</span> <span class="name">value</span>;
<span class="name">score</span> <span class="operator">+=</span> <span class="name">value</span>;
}
}
<span class="keyword">function</span> <span class="name">isFree</span>(<span class="name">row</span>, column)
{
<span class="keyword">return</span> <span class="name">board</span>[<span class="name">row</span> <span class="operator">*</span> <span class="name">numColumns</span> <span class="operator">+</span> <span class="name">column</span>] <span class="operator">==</span> <span class="name">undefined</span>;
}
<span class="keyword">function</span> <span class="name">isHead</span>(<span class="name">row</span>, column)
{
<span class="keyword">return</span> <span class="name">head</span>.<span class="name">column</span> <span class="operator">==</span> <span class="name">column</span> <span class="operator">&&</span> <span class="name">head</span>.<span class="name">row</span> <span class="operator">==</span> <span class="name">row</span>;
}
<span class="keyword">function</span> <span class="name">testCookie</span>(<span class="name">row</span>, column)
{
<span class="keyword">if</span> (<span class="name">cookie</span> <span class="operator">&&</span> !<span class="name">cookie</span>.<span class="name">dying</span> <span class="operator">&&</span> <span class="name">cookie</span>.<span class="name">row</span> <span class="operator">==</span> <span class="name">row</span> <span class="operator">&&</span> <span class="name">cookie</span>.<span class="name">column</span> <span class="operator">==</span> <span class="name">column</span>) {
var <span class="name">value</span> = <span class="name">cookie</span>.<span class="name">value</span>;
<span class="name">waitForCookie</span> <span class="operator">=</span> <span class="name">value</span>;
<span class="name">growType</span> <span class="operator">=</span> <span class="name">snake</span>[<span class="name">snake</span>.<span class="name">length</span><span class="operator">-</span><span class="number">1</span>].<span class="name">type</span> <span class="operator">==</span> <span class="number">1</span> ? <span class="number">0</span> : <span class="number">1</span>;
<span class="name">cookie</span>.<span class="name">dying</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="name">cookie</span>.<span class="name">z</span> <span class="operator">=</span> <span class="name">numRows</span> <span class="operator">*</span> <span class="name">numColumns</span> <span class="operator">+</span> <span class="number">2</span>;
<span class="keyword">return</span> <span class="name">value</span>;
}
<span class="keyword">return</span> <span class="number">0</span>;
}
<span class="keyword">function</span> <span class="name">moveSkull</span>()
{
<span class="keyword">if</span> (<span class="name">linksToDie</span> <span class="operator">></span> <span class="number">0</span>) {
--<span class="name">linksToDie</span>;
var <span class="name">link</span> = <span class="name">snake</span>.<span class="name">pop</span>();
<span class="name">link</span>.<span class="name">dying</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="name">board</span>[<span class="name">link</span>.<span class="name">row</span> <span class="operator">*</span> <span class="name">numColumns</span> <span class="operator">+</span> <span class="name">link</span>.<span class="name">column</span>] <span class="operator">=</span> <span class="name">undefined</span>;
<span class="keyword">if</span> (<span class="name">score</span> <span class="operator">></span> <span class="number">0</span>)
--<span class="name">score</span>;
<span class="keyword">if</span> (<span class="name">snake</span>.<span class="name">length</span> <span class="operator">==</span> <span class="number">0</span>) {
<span class="name">endGame</span>();
<span class="keyword">return</span>;
}
}
var <span class="name">row</span> = <span class="name">skull</span>.<span class="name">row</span>;
var <span class="name">column</span> = <span class="name">skull</span>.<span class="name">column</span>;
<span class="keyword">if</span> (<span class="name">isHead</span>(<span class="name">row</span>, <span class="name">column</span>)) {
<span class="name">endGame</span>();
<span class="keyword">return</span>;
}
<span class="name">row</span> <span class="operator">+=</span> <span class="name">skull</span>.<span class="name">verticalMovement</span>;
<span class="name">column</span> <span class="operator">+=</span> <span class="name">skull</span>.<span class="name">horizontalMovement</span>;
var <span class="name">attempts</span> = <span class="number">4</span>;
<span class="keyword">while</span> (<span class="name">skullMovementsBeforeDirectionChange</span> <span class="operator">==</span> <span class="number">0</span> <span class="operator">||</span> <span class="name">row</span> <span class="operator"><</span> <span class="number">0</span> <span class="operator">||</span> <span class="name">row</span> <span class="operator">>=</span> <span class="name">numRows</span>
<span class="operator">||</span> <span class="name">column</span> <span class="operator"><</span> <span class="number">0</span> <span class="operator">||</span> <span class="name">column</span> <span class="operator">>=</span> <span class="name">numColumns</span>
<span class="operator">||</span> (!<span class="name">isFree</span>(<span class="name">row</span>, <span class="name">column</span>) <span class="operator">&&</span> !<span class="name">isHead</span>(<span class="name">row</span>, <span class="name">column</span>))) {
var <span class="name">d</span> = <span class="name">rand</span>(<span class="number">8</span>);
<span class="name">skull</span>.<span class="name">verticalMovement</span> <span class="operator">=</span> <span class="number">0</span>;
<span class="name">skull</span>.<span class="name">horizontalMovement</span> <span class="operator">=</span> <span class="number">0</span>;
<span class="name">skullMovementsBeforeDirectionChange</span> <span class="operator">=</span> <span class="name">rand</span>(<span class="number">20</span>)<span class="operator">+</span><span class="number">1</span>;
<span class="keyword">if</span> (<span class="name">d</span> <span class="operator">==</span> <span class="number">0</span>) {
<span class="name">skull</span>.<span class="name">verticalMovement</span> <span class="operator">=</span> -<span class="number">1</span>
} else <span class="keyword">if</span> (<span class="name">d</span> <span class="operator">==</span> <span class="number">1</span>) {
<span class="name">skull</span>.<span class="name">horizontalMovement</span> <span class="operator">=</span> -<span class="number">1</span>;
} else <span class="keyword">if</span> (<span class="name">d</span> <span class="operator">==</span> <span class="number">2</span>) {
<span class="name">skull</span>.<span class="name">verticalMovement</span> <span class="operator">=</span> <span class="number">1</span>
} else <span class="keyword">if</span> (<span class="name">d</span> <span class="operator">==</span> <span class="number">3</span>){
<span class="name">skull</span>.<span class="name">horizontalMovement</span> <span class="operator">=</span> <span class="number">1</span>;
} else <span class="keyword">if</span> (<span class="name">cookie</span>) {
var <span class="name">rd</span> = <span class="name">cookie</span>.<span class="name">row</span> <span class="operator">-</span> <span class="name">skull</span>.<span class="name">row</span>;
var <span class="name">rc</span> = <span class="name">cookie</span>.<span class="name">column</span> <span class="operator">-</span> <span class="name">skull</span>.<span class="name">column</span>;
<span class="keyword">if</span> (<span class="name">Math</span>.<span class="name">abs</span>(<span class="name">rd</span>) <span class="operator">></span> <span class="name">Math</span>.<span class="name">abs</span>(<span class="name">rc</span>)) {
<span class="name">skull</span>.<span class="name">verticalMovement</span> <span class="operator">=</span> <span class="name">rd</span> <span class="operator">></span> <span class="number">0</span> ? <span class="number">1</span> : -<span class="number">1</span>;
<span class="name">skullMovementsBeforeDirectionChange</span> <span class="operator">=</span> <span class="name">Math</span>.<span class="name">abs</span>(<span class="name">rd</span>);
} else {
<span class="name">skull</span>.<span class="name">horizontalMovement</span><span class="operator">=</span> <span class="name">rc</span> <span class="operator">></span> <span class="number">0</span> ? <span class="number">1</span> : -<span class="number">1</span>;
<span class="name">skullMovementsBeforeDirectionChange</span> <span class="operator">=</span> <span class="name">Math</span>.<span class="name">abs</span>(<span class="name">rc</span>);
}
}
<span class="name">row</span> <span class="operator">=</span> <span class="name">skull</span>.<span class="name">row</span> <span class="operator">+</span> <span class="name">skull</span>.<span class="name">verticalMovement</span>;
<span class="name">column</span> <span class="operator">=</span> <span class="name">skull</span>.<span class="name">column</span> <span class="operator">+</span> <span class="name">skull</span>.<span class="name">horizontalMovement</span>;
<span class="keyword">if</span> (--<span class="name">attempts</span> <span class="operator">==</span> <span class="number">0</span>)
<span class="keyword">return</span>;
}
<span class="name">skull</span>.<span class="name">row</span> <span class="operator">=</span> <span class="name">row</span>;
<span class="name">skull</span>.<span class="name">column</span> <span class="operator">=</span> <span class="name">column</span>;
--<span class="name">skullMovementsBeforeDirectionChange</span>;
var <span class="name">value</span> = <span class="name">testCookie</span>(<span class="name">row</span>, <span class="name">column</span>);
<span class="keyword">if</span> (<span class="name">value</span> <span class="operator">></span> <span class="number">0</span>)
<span class="name">linksToDie</span> <span class="operator">+=</span> <span class="name">value</span><span class="operator">/</span><span class="number">2</span>;
<span class="keyword">if</span> (<span class="name">isHead</span>(<span class="name">row</span>, <span class="name">column</span>))
<span class="name">endGame</span>();
}
<span class="keyword">function</span> <span class="name">createCookie</span>(<span class="name">value</span>) {
<span class="keyword">if</span> (<span class="name">numRows</span> <span class="operator">*</span> <span class="name">numColumns</span> <span class="operator">-</span> <span class="name">snake</span>.<span class="name">length</span> <span class="operator"><</span> <span class="number">10</span>)
<span class="keyword">return</span>;
var <span class="name">column</span> = <span class="name">rand</span>(<span class="name">numColumns</span>);
var <span class="name">row</span> = <span class="name">rand</span>(<span class="name">numRows</span>);
<span class="keyword">while</span> (!<span class="name">isFree</span>(<span class="name">row</span>, <span class="name">column</span>)) {
column++;
<span class="keyword">if</span> (<span class="name">column</span> <span class="operator">==</span> <span class="name">numColumns</span>) {
<span class="name">column</span> <span class="operator">=</span> <span class="number">0</span>;
row++;
<span class="keyword">if</span> (<span class="name">row</span> <span class="operator">==</span> <span class="name">numRows</span>)
<span class="name">row</span> <span class="operator">=</span> <span class="number">0</span>;
}
}
<span class="keyword">if</span>(<span class="name">cookieComponent</span>.<span class="name">status</span> <span class="operator">!=</span> <span class="name">Component</span>.<span class="name">Ready</span>) {
<span class="keyword">if</span>(<span class="name">cookieComponent</span>.<span class="name">status</span> <span class="operator">==</span> <span class="name">Component</span>.<span class="name">Error</span>)
<span class="name">console</span>.<span class="name">log</span>(<span class="name">cookieComponent</span>.<span class="name">errorString</span>());
else
<span class="name">console</span>.<span class="name">log</span>(<span class="string">"Still loading cookieComponent"</span>);
<span class="keyword">return</span>;<span class="comment">//TODO: Better error handling?</span>
}
<span class="name">cookie</span> <span class="operator">=</span> <span class="name">cookieComponent</span>.<span class="name">createObject</span>(<span class="name">head</span>.<span class="name">parent</span>);
<span class="name">cookie</span>.<span class="name">value</span> <span class="operator">=</span> <span class="name">value</span>;
<span class="name">cookie</span>.<span class="name">row</span> <span class="operator">=</span> <span class="name">row</span>;
<span class="name">cookie</span>.<span class="name">column</span> <span class="operator">=</span> <span class="name">column</span>;
}</pre>
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<!-- @@@demos/declarative/snake/qml/snake/content/snake.js -->
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