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<!DOCTYPE HTML>
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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">playground</a></div>
<h1 title="Class SpaceInvadersLevel" class="title">Class SpaceInvadersLevel</h1>
</div>
<div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
<div class="inheritance"><a href="Playground.html" title="class in playground">playground.Playground</a>
<div class="inheritance">playground.SpaceInvadersLevel</div>
</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="Level1.html" title="class in playground">Level1</a></code>, <code><a href="Level2.html" title="class in playground">Level2</a></code>, <code><a href="Level3.html" title="class in playground">Level3</a></code>, <code><a href="Level4.html" title="class in playground">Level4</a></code>, <code><a href="LevelBoss.html" title="class in playground">LevelBoss</a></code>, <code><a href="LevelHitTwice.html" title="class in playground">LevelHitTwice</a></code>, <code><a href="LevelMovingHitObjects.html" title="class in playground">LevelMovingHitObjects</a></code>, <code><a href="LevelMovingObjects.html" title="class in playground">LevelMovingObjects</a></code>, <code><a href="LevelWithBox.html" title="class in playground">LevelWithBox</a></code>, <code><a href="SpaceInvadersLevelAua.html" title="class in playground">SpaceInvadersLevelAua</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">SpaceInvadersLevel</span>
<span class="extends-implements">extends <a href="Playground.html" title="class in playground">Playground</a></span></div>
<div class="block">Class that realizes all the game logic of a very simple game level. The level contains for now
only two objects that are <a href="../gameobjects/GameObject.html" title="class in gameobjects"><code>GameObject</code></a> subclasses: <a href="../gameobjects/FallingStar.html" title="class in gameobjects"><code>FallingStar</code></a> and
<a href="../gameobjects/EgoObject.html" title="class in gameobjects"><code>EgoObject</code></a>. Functions performed by this class are:
<ul>
<li>initially set up the level, spawn all object etc., in method <a href="#prepareLevel(java.lang.String)"><code>prepareLevel(java.lang.String)</code></a>
<li>React to game events in <code>actionIfEgoCollidesWithCollect(GameObject, GameObject)</code> ,
<code>actionIfEgoCollidesWithEnemy(GameObject, GameObject)</code>, etc.
<li>define basic object movement rules for all objects in the level in the various
ObjectController subclasses: <a href="../controller/EgoController.html" title="class in controller"><code>EgoController</code></a> and <a href="../controller/FallingStarController.html" title="class in controller"><code>FallingStarController</code></a>.
</ul></div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- =========== FIELD SUMMARY =========== -->
<li>
<section class="field-summary" id="field-summary">
<h2>Field Summary</h2>
<div class="caption"><span>Fields</span></div>
<div class="summary-table three-column-summary">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Field</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color"><code>static final double</code></div>
<div class="col-second even-row-color"><code><a href="#EGOSPEED" class="member-name-link">EGOSPEED</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>static final double</code></div>
<div class="col-second odd-row-color"><code><a href="#SHOTSPEED" class="member-name-link">SHOTSPEED</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
</div>
<div class="inherited-list">
<h3 id="fields-inherited-from-class-playground.Playground">Fields inherited from class&nbsp;playground.<a href="Playground.html" title="class in playground">Playground</a></h3>
<code><a href="Playground.html#FLAGS_ALL">FLAGS_ALL</a>, <a href="Playground.html#FLAGS_GLOBAL">FLAGS_GLOBAL</a>, <a href="Playground.html#FLAGS_LEVEL">FLAGS_LEVEL</a></code></div>
</section>
</li>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<li>
<section class="constructor-summary" id="constructor-summary">
<h2>Constructor Summary</h2>
<div class="caption"><span>Constructors</span></div>
<div class="summary-table two-column-summary">
<div class="table-header col-first">Constructor</div>
<div class="table-header col-last">Description</div>
<div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E()" class="member-name-link">SpaceInvadersLevel</a>()</code></div>
<div class="col-last even-row-color">&nbsp;</div>
</div>
</section>
</li>
<!-- ========== METHOD SUMMARY =========== -->
<li>
<section class="method-summary" id="method-summary">
<h2>Method Summary</h2>
<div id="method-summary-table">
<div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
<div id="method-summary-table.tabpanel" role="tabpanel">
<div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#applyGameLogic()" class="member-name-link">applyGameLogic</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">applies the logic of the level: For now, this is just about deleting shots that are leaving the
screen and calling methods 'actionIf..' in case objects collide.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#gameOver()" class="member-name-link">gameOver</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#levelFinished()" class="member-name-link">levelFinished</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#preferredSizeX()" class="member-name-link">preferredSizeX</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">calculates and returns the preferred size of the level (in pixel) for X-direction</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#preferredSizeY()" class="member-name-link">preferredSizeY</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">calculates and returns the preferred size of the level (in pixel) for Y-direction</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#prepareLevel(java.lang.String)" class="member-name-link">prepareLevel</a><wbr>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;id)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">initially sets up the level.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#redrawLevel(java.awt.Graphics2D)" class="member-name-link">redrawLevel</a><wbr>(<a href="https://docs.oracle.com/javase/8/docs/api/java/awt/Graphics2D.html" title="class or interface in java.awt" class="external-link">Graphics2D</a>&nbsp;g2)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">(re)draws the level but NOT the objects, they draw themselves.</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-playground.Playground">Methods inherited from class&nbsp;playground.<a href="Playground.html" title="class in playground">Playground</a></h3>
<code><a href="Playground.html#addObject(gameobjects.GameObject)">addObject</a>, <a href="Playground.html#addObjectNow(gameobjects.GameObject)">addObjectNow</a>, <a href="Playground.html#collectObjects(java.lang.String,boolean)">collectObjects</a>, <a href="Playground.html#deleteObject(java.lang.String)">deleteObject</a>, <a href="Playground.html#deleteObjectNow(java.lang.String)">deleteObjectNow</a>, <a href="Playground.html#getGameTime()">getGameTime</a>, <a href="Playground.html#getGlobalFlag(java.lang.String)">getGlobalFlag</a>, <a href="Playground.html#getKeyEvents()">getKeyEvents</a>, <a href="Playground.html#getLevelFlag(java.lang.String)">getLevelFlag</a>, <a href="Playground.html#getMouseEvents()">getMouseEvents</a>, <a href="Playground.html#getObject(java.lang.String)">getObject</a>, <a href="Playground.html#getOrCreateGlobalFlag(java.lang.String,java.lang.Object)">getOrCreateGlobalFlag</a>, <a href="Playground.html#getOrCreateLevelFlag(java.lang.String,java.lang.Object)">getOrCreateLevelFlag</a>, <a href="Playground.html#getSizeX()">getSizeX</a>, <a href="Playground.html#getSizeY()">getSizeY</a>, <a href="Playground.html#getTimestep()">getTimestep</a>, <a href="Playground.html#isPaused()">isPaused</a>, <a href="Playground.html#processKeyEvents(java.util.Stack)">processKeyEvents</a>, <a href="Playground.html#processMouseEvents(java.util.Stack)">processMouseEvents</a>, <a href="Playground.html#redraw(java.awt.Graphics2D)">redraw</a>, <a href="Playground.html#reset()">reset</a>, <a href="Playground.html#resetFlags(int)">resetFlags</a>, <a href="Playground.html#setGameTime(double)">setGameTime</a>, <a href="Playground.html#setGlobalFlag(java.lang.String,java.lang.Object)">setGlobalFlag</a>, <a href="Playground.html#setLevelFlag(java.lang.String,java.lang.Object)">setLevelFlag</a>, <a href="Playground.html#setPaused(boolean)">setPaused</a>, <a href="Playground.html#setTimestep(double)">setTimestep</a>, <a href="Playground.html#togglePause()">togglePause</a>, <a href="Playground.html#updateObjects()">updateObjects</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
</section>
</li>
</ul>
</section>
<section class="details">
<ul class="details-list">
<!-- ============ FIELD DETAIL =========== -->
<li>
<section class="field-details" id="field-detail">
<h2>Field Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="SHOTSPEED">
<h3>SHOTSPEED</h3>
<div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">SHOTSPEED</span></div>
<dl class="notes">
<dt>See Also:</dt>
<dd>
<ul class="see-list">
<li><a href="../constant-values.html#playground.SpaceInvadersLevel.SHOTSPEED">Constant Field Values</a></li>
</ul>
</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="EGOSPEED">
<h3>EGOSPEED</h3>
<div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">EGOSPEED</span></div>
<dl class="notes">
<dt>See Also:</dt>
<dd>
<ul class="see-list">
<li><a href="../constant-values.html#playground.SpaceInvadersLevel.EGOSPEED">Constant Field Values</a></li>
</ul>
</dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<li>
<section class="constructor-details" id="constructor-detail">
<h2>Constructor Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="&lt;init&gt;()">
<h3>SpaceInvadersLevel</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">SpaceInvadersLevel</span>()</div>
</section>
</li>
</ul>
</section>
</li>
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="prepareLevel(java.lang.String)">
<h3>prepareLevel</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">prepareLevel</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;id)</span></div>
<div class="block">initially sets up the level. Not called by user interaction, but called every time a layer is
restarted from scratch. So make sure that this is possible. Here, resources are loaded only
once even if method is called several times.</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="Playground.html#prepareLevel(java.lang.String)">prepareLevel</a></code>&nbsp;in class&nbsp;<code><a href="Playground.html" title="class in playground">Playground</a></code></dd>
<dt>Parameters:</dt>
<dd><code>id</code> - String identifies level.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="redrawLevel(java.awt.Graphics2D)">
<h3>redrawLevel</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">redrawLevel</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/javase/8/docs/api/java/awt/Graphics2D.html" title="class or interface in java.awt" class="external-link">Graphics2D</a>&nbsp;g2)</span></div>
<div class="block">(re)draws the level but NOT the objects, they draw themselves. Called by the main game loop.
This method mainly draws the background and the scoreboard.</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="Playground.html#redrawLevel(java.awt.Graphics2D)">redrawLevel</a></code>&nbsp;in class&nbsp;<code><a href="Playground.html" title="class in playground">Playground</a></code></dd>
<dt>Parameters:</dt>
<dd><code>g2</code> - Graphics2D object that can, and should be, draw on.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="applyGameLogic()">
<h3>applyGameLogic</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">applyGameLogic</span>()</div>
<div class="block">applies the logic of the level: For now, this is just about deleting shots that are leaving the
screen and calling methods 'actionIf..' in case objects collide.</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="Playground.html#applyGameLogic()">applyGameLogic</a></code>&nbsp;in class&nbsp;<code><a href="Playground.html" title="class in playground">Playground</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="gameOver()">
<h3>gameOver</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">gameOver</span>()</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="Playground.html#gameOver()">gameOver</a></code>&nbsp;in class&nbsp;<code><a href="Playground.html" title="class in playground">Playground</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="levelFinished()">
<h3>levelFinished</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">levelFinished</span>()</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="Playground.html#levelFinished()">levelFinished</a></code>&nbsp;in class&nbsp;<code><a href="Playground.html" title="class in playground">Playground</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="preferredSizeX()">
<h3>preferredSizeX</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">preferredSizeX</span>()</div>
<div class="block">calculates and returns the preferred size of the level (in pixel) for X-direction</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="Playground.html#preferredSizeX()">preferredSizeX</a></code>&nbsp;in class&nbsp;<code><a href="Playground.html" title="class in playground">Playground</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="preferredSizeY()">
<h3>preferredSizeY</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">preferredSizeY</span>()</div>
<div class="block">calculates and returns the preferred size of the level (in pixel) for Y-direction</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="Playground.html#preferredSizeY()">preferredSizeY</a></code>&nbsp;in class&nbsp;<code><a href="Playground.html" title="class in playground">Playground</a></code></dd>
</dl>
</section>
</li>
</ul>
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