<snapdata remixID="8963225"><project name="L09 Brick Wall" app="Snap! 5.1, http://snap.berkeley.edu" version="1"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="false" volume="100" pan="0" lines="flat" ternary="true" codify="false" inheritance="false" sublistIDs="false" scheduled="false" id="1"><pentrails>data:image/png;base64,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</pentrails><costumes><list struct="atomic" id="2"></list></costumes><sounds><list struct="atomic" id="3"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites><sprite name="Sprite" idx="1" x="230" y="-65" heading="270" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="0" color="145,26,68,1" pen="tip" id="8"><costumes><list struct="atomic" id="9"></list></costumes><sounds><list struct="atomic" id="10"></list></sounds><blocks></blocks><variables></variables><scripts><script x="40.5205068125" y="10"><block s="clear"></block><block s="doSetVar"><l>row</l><l>0</l></block><block s="gotoXY"><l>-220</l><l>70</l></block><block s="setHeading"><l>90</l></block><custom-block s="draw brick wall with %s rows bricks/row %s brick length %s width %s gap thickness %s"><l>20</l><l>10</l><l>35</l><l>10</l><l>10</l></custom-block></script><script x="47.520505812500005" y="161.999999"><custom-block s="rowA"></custom-block><block s="changeYPosition"><l>-15</l></block><block s="turnLeft"><l>180</l></block><custom-block s="rowB"></custom-block><block s="changeYPosition"><l>-15</l></block><block s="turnLeft"><l>180</l></block></script><script x="36.5205068125" y="309"><custom-block s="draw brick, length: %n width: %n"><l>30</l><l>10</l></custom-block></script></scripts></sprite><watcher var="row" style="normal" x="10" y="10" color="243,118,29"/></sprites></stage><hidden></hidden><headers></headers><code></code><blocks><block-definition s="set flag %&apos;which&apos; to %&apos;tf&apos;" type="command" category="sensing"><header></header><code></code><translations></translations><inputs><input type="%s" readonly="true"><options>Presentation mode&#xD;Retina display support&#xD;Long form input dialog&#xD;Plain prototype labels&#xD;Input sliders&#xD;Execute on slider change&#xD;Clicking sound&#xD;Turbo mode&#xD;Flat design&#xD;Keyboard editing&#xD;Table support&#xD;Table lines&#xD;Visible stepping&#xD;Thread safe scripts&#xD;Prefer smooth animations&#xD;Flat line ends&#xD;Codification support&#xD;Inheritance support</options></input><input type="%b"></input></inputs><script><block s="doRun"><block s="reportJSFunction"><list><l>which</l><l>tf</l></list><l>var   stage = this.parentThatIsA(StageMorph),&#xD;        ide = stage.parentThatIsA(IDE_Morph),&#xD;        world = stage.parentThatIsA(WorldMorph);&#xD;&#xD;if (tf != !!tf) return;&#xD;&#xD;try{&#xD;ide.savingPreferences = false;&#xD;&#xD;switch (which) {&#xD;    case &apos;Presentation mode&apos;:&#xD;        if (tf != ide.isAppMode) ide.toggleAppMode();&#xD;        break;&#xD;    case &apos;Retina display support&apos;:&#xD;        if (tf != isRetinaEnabled()) ide.toggleRetina();&#xD;        break;&#xD;    case &apos;Long form input dialog&apos;:&#xD;        if (tf != InputSlotDialogMorph.prototype.isLaunchingExpanded)&#xD;            ide.toggleLongFormInputDialog();&#xD;        break;&#xD;    case &apos;Plain prototype labels&apos;:&#xD;        if (tf != BlockLabelPlaceHolderMorph.prototype.plainLabel)&#xD;            ide.togglePlainPrototypeLabels();&#xD;        break;&#xD;    case &apos;Input sliders&apos;:&#xD;        MorphicPreferences.useSliderForInput = tf;&#xD;        break;&#xD;    case &apos;Execute on slider change&apos;:&#xD;        ArgMorph.prototype.executeOnSliderEdit = tf;&#xD;        break;&#xD;    case &apos;Clicking sound&apos;:&#xD;        if (tf != !!BlockMorph.prototype.snapSound)&#xD;            BlockMorph.prototype.toggleSnapSound();&#xD;        break;&#xD;    case &apos;Turbo mode&apos;:&#xD;        if (tf != stage.isFastTracked)&#xD;            ide.toggleFastTracking();&#xD;        break;&#xD;    case &apos;Flat design&apos;:&#xD;        if (tf == MorphicPreferences.isFlat) break;&#xD;        if (tf)&#xD;            ide.flatDesign();&#xD;        else&#xD;            ide.defaultDesign();&#xD;        break;&#xD;    case &apos;Keyboard editing&apos;:&#xD;            ScriptsMorph.prototype.enableKeyboard = tf;&#xD;        break;&#xD;    case &apos;Table support&apos;:&#xD;            List.prototype.enableTables = tf;&#xD;        break;&#xD;    case &apos;Table lines&apos;:&#xD;                TableMorph.prototype.highContrast = tf;&#xD;        break;&#xD;    case &apos;Visible stepping&apos;:&#xD;        if (tf != Process.prototype.enableSingleStepping)&#xD;            ide.toggleSingleStepping();&#xD;        break;&#xD;    case &apos;Thread safe scripts&apos;:&#xD;        stage.isThreadSafe = tf;&#xD;        break;&#xD;    case &apos;Prefer smooth animations&apos;:&#xD;        if (tf != (StageMorph.prototype.frameRate &gt; 0))&#xD;            ide.toggleVariableFrameRate();&#xD;        break;&#xD;    case &apos;Flat line ends&apos;:&#xD;        SpriteMorph.prototype.useFlatLineEnds = tf;&#xD;        break;&#xD;    case &apos;Codification support&apos;:&#xD;        if (tf != StageMorph.prototype.enableCodeMapping) {&#xD;            StageMorph.prototype.enableCodeMapping = tf;&#xD;            ide.currentSprite.blocksCache.variables = null;&#xD;            ide.currentSprite.paletteCache.variables = null;&#xD;            ide.refreshPalette();&#xD;        }&#xD;        break;&#xD;    case &apos;Inheritance support&apos;:&#xD;        if (tf != StageMorph.prototype.enableInheritance) {&#xD;            StageMorph.prototype.enableInheritance = tf;&#xD;            ide.currentSprite.blocksCache.variables = null;&#xD;            ide.currentSprite.paletteCache.variables = null;&#xD;            ide.refreshPalette();&#xD;        }&#xD;        break;&#xD;};&#xD;}&#xD;finally {&#xD;ide.savingPreferences = false;&#xD;};&#xD;</l></block><list><block var="which"/><block var="tf"/></list></block></script></block-definition><block-definition s="draw brick, length: %&apos;length&apos; width: %&apos;width&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input></inputs><script><block 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