<snapdata remixID="11042338"><project name="Yaozhou Wu U2L12-brickwall - starter" app="Snap! 6, https://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" penlog="false" volume="100" pan="0" lines="flat" ternary="true" hyperops="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="-50" y="90" heading="90" 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="20.66666666666663" y="10"><custom-block s="draw brick, length: %n width: %n"><l>30</l><l>10</l></custom-block></script><script x="13.999999999999943" y="60.25000000000048"><custom-block s="draw row B with Bricks per row: %s with Brick length: %s Width: %s Gap Thickness: %s"><l></l><l></l><l></l><l></l></custom-block></script><script x="10" y="125.22222222222226"><custom-block s="draw row A with Bricks per row: %s with Brick length: %s Width: %s Gap Thickness %s"><l></l><l></l><l></l><l></l></custom-block></script><script x="11.499999999999943" y="193.02777777777786"><block s="clear"></block><block s="gotoXY"><l>-50</l><l>0</l></block><custom-block s="draw Brick Wall with %s rows with bricks per row: %s with Brick length: %s Width: %s Gap Thickness: %s"><l>9</l><l>5</l><l>40</l><l>5</l><l>10</l></custom-block></script></scripts></sprite></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;            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