<snapdata remixID="9347434"><project name="M6L4A2" 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" 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AoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQIHLFxAWmhEwHPAAAAAElFTkSuQmCC</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="Brick-drawer" idx="1" x="0" y="0" 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="131" y="26"><block s="receiveGo"></block><block s="gotoXY"><l>100</l><l>0</l></block><block s="clear"></block><custom-block s="draw a brick wall with %s rows"><l>10</l></custom-block></script><script x="32" y="44"><block s="clear"></block></script><script x="42" y="154"><block s="gotoXY"><l>0</l><l>0</l></block></script></scripts></sprite><watcher scope="Brick-drawer" s="xPosition" style="normal" x="10" y="10" color="74,108,212"/><watcher scope="Brick-drawer" s="yPosition" style="normal" x="10" y="31.000001999999995" color="74,108,212"/></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="row A %&apos;bricks&apos; %&apos;length&apos; %&apos;width&apos; %&apos;thickness&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input><input type="%s"></input><input type="%s"></input></inputs><script><block s="doRepeat"><block var="bricks"/><script><custom-block s="draw brick, length: %n width: %n"><block var="length"/><block var="width"/></custom-block><block s="forward"><block var="thickness"/></block></script></block></script></block-definition><block-definition s="row B %&apos;bricks&apos; %&apos;length&apos; %&apos;width&apos; %&apos;thickness&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input><input type="%s"></input><input type="%s"></input></inputs><script><custom-block s="draw brick, length: %n width: %n"><block s="reportDifference"><block s="reportQuotient"><block var="length"/><l>2</l></block><l>3</l></block><block var="width"/></custom-block><block s="forward"><block var="thickness"/></block><block s="doRepeat"><block s="reportDifference"><block var="bricks"/><l>1</l></block><script><custom-block s="draw brick, length: %n width: %n"><block var="length"/><block var="width"/></custom-block><block s="forward"><block var="thickness"/></block></script></block><custom-block s="draw brick, length: %n width: %n"><block s="reportDifference"><block s="reportQuotient"><block var="length"/><l>2</l></block><l>3</l></block><block var="width"/></custom-block></script></block-definition><block-definition s="even? %&apos;number&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%n"></input></inputs><script><block s="doIfElse"><block s="reportEquals"><block s="reportModulus"><block var="number"/><l>2</l></block><l>0</l></block><script><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script><script><block s="doReport"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block></script></block-definition><block-definition s="%&apos;number 1&apos; divisible by %&apos;number 2&apos; ?" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input></inputs><script><block s="doIfElse"><block s="reportEquals"><block s="reportModulus"><block var="number 1"/><block var="number 2"/></block><l>0</l></block><script><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script><script><block s="doReport"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block></script></block-definition><block-definition s="Draw Brick Wall with rows: %&apos;rows&apos; bricks per row: %&apos;bricks&apos; of brick length: %&apos;length&apos; Width: %&apos;width&apos; Gap Thickness: %&apos;thickness&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input><input type="%n"></input><input type="%n"></input><input type="%n"></input></inputs><script><block s="gotoXY"><l>200</l><l>-150</l></block><block s="doIfElse"><custom-block s="even? %n"><block var="rows"/></custom-block><script><block s="doRepeat"><block s="reportQuotient"><block var="rows"/><l>2</l></block><script><custom-block s="row A %s %s %s %s"><block var="bricks"/><block 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s="changeYPosition"><l>-15</l></block></script></block></script></block></script></block-definition><block-definition s="row B" type="command" category="pen"><header></header><code></code><translations></translations><inputs></inputs><script><block s="forward"><l>6</l></block><custom-block s="draw brick, length: %n width: %n"><l>12</l><l>10</l></custom-block><block s="forward"><l>6</l></block><block s="doRepeat"><l>5</l><script><custom-block s="draw brick, length: %n width: %n"><l>30</l><l>10</l></custom-block><block s="forward"><l>6</l></block></script></block><custom-block s="draw brick, length: %n width: %n"><l>12</l><l>10</l></custom-block></script></block-definition><block-definition s="row A" type="command" category="pen"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doRepeat"><l>6</l><script><custom-block s="draw brick, length: %n width: %n"><l>30</l><l>10</l></custom-block><block 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