<snapdata remixID="9204114"><project name="U2L4-brickwall" app="Snap! 5.4, 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" penlog="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="-100" y="-180" 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="232" y="188"><block s="receiveKey"><l><option>space</option></l></block><custom-block s="Brick wall Rows: %n"><l>12</l></custom-block></script></scripts></sprite><watcher var="height" style="normal" x="10" y="10" color="243,118,29" hidden="true"/></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 s="setColor"><color>145,26,68,1</color></block><custom-block s="set flat line ends to %b"><block s="reportBoolean"><l><bool>true</bool></l></block></custom-block><block s="setSize"><block var="width"/></block><block s="down"></block><block s="forward"><block var="length"/></block><block s="up"></block></script></block-definition><block-definition s="set flat line ends to %&apos;flag&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%b"></input></inputs><script><custom-block s="set flag %s to %b"><l>Flat line ends</l><block var="flag"/></custom-block></script></block-definition><block-definition s="brick row" type="command" category="pen"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doRepeat"><l>10</l><script><custom-block s="draw brick, length: %n width: %n"><l>20</l><l>10</l></custom-block><block s="up"></block><block s="forward"><l>5</l></block></script></block></script><scripts><script x="46" y="208"><block s="gotoXY"><l>-50</l><l>0</l></block></script></scripts></block-definition><block-definition s="brick row b" type="command" category="pen"><header></header><code></code><translations></translations><inputs></inputs><script><custom-block s="draw brick, length: %n width: %n"><l>10</l><l>10</l></custom-block><block s="forward"><l>5</l></block><block s="doRepeat"><l>9</l><script><custom-block s="draw brick, length: %n width: %n"><l>20</l><l>10</l></custom-block><block s="up"></block><block s="forward"><l>5</l></block></script></block><custom-block s="draw brick, length: %n width: %n"><l>10</l><l>10</l></custom-block></script></block-definition><block-definition s="Brick wall Rows: %&apos;Rows&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%n"></input></inputs><script><block s="clear"></block><block s="gotoXY"><l>-100</l><l>0</l></block><block s="doSetVar"><l>height</l><l>0</l></block><block s="doRepeat"><block s="reportQuotient"><block var="Rows"/><l>2</l></block><script><custom-block s="brick row"></custom-block><block s="doChangeVar"><l>height</l><l>-15</l></block><block s="gotoXY"><l>-100</l><block var="height"/></block><custom-block s="brick row b"></custom-block><block s="doChangeVar"><l>height</l><l>-15</l></block><block s="gotoXY"><l>-100</l><block var="height"/></block></script></block></script></block-definition></blocks><variables><variable name="height"><l>-180</l></variable></variables></project><media name="U2L4-brickwall" app="Snap! 5.4, http://snap.berkeley.edu" version="1"></media></snapdata>