<snapdata remixID="9192329"><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="-5" 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="21" y="17"><block s="receiveGo"></block><block s="clear"></block><block s="up"></block><block s="gotoXY"><l>-100</l><l>100</l></block><block s="down"></block><custom-block s="draw Brick Wall with %s rows"><l>7</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;            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="rowA" type="command" category="pen"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doRepeat"><l>7</l><script><custom-block s="draw brick, length: %n width: %n"><l>30</l><l>10</l></custom-block><block s="up"></block><block s="forward"><l>5</l></block><block s="down"></block></script></block></script></block-definition><block-definition s="rowB" type="command" category="pen"><header></header><code></code><translations></translations><inputs></inputs><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>10</l></block><block s="down"></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="up"></block><block s="forward"><l>8</l></block><block s="down"></block></script></block><custom-block s="draw brick, length: %n width: %n"><l>20</l><l>10</l></custom-block></script></block-definition><block-definition s="%&apos;input&apos; between? %&apos;x&apos; and %&apos;y&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input><input type="%s"></input></inputs><script><block s="doReport"><block s="reportAnd"><block s="reportLessThan"><block var="x"/><block var="input"/></block><block s="reportGreaterThan"><block var="y"/><block var="input"/></block></block></block></script></block-definition><block-definition s="%&apos;numerator&apos; divisible by %&apos;denominator&apos; ?" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input></inputs><script><block s="doReport"><block s="reportEquals"><block s="reportModulus"><block var="numerator"/><block var="denominator"/></block><l>0</l></block></block></script></block-definition><block-definition s="even? %&apos;input&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doReport"><custom-block s="%s divisible by %s ?"><block var="input"/><l>2</l></custom-block></block></script></block-definition><block-definition s="integer? %&apos;input&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doReport"><block s="reportEquals"><block s="reportRound"><block var="input"/></block><block var="input"/></block></block></script></block-definition><block-definition s="draw Brick Wall with %&apos;# of rows&apos; rows" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doFor"><l>i</l><l>1</l><block var="# of rows"/><script><block s="doIfElse"><custom-block s="even? %s"><block var="i"/></custom-block><script><custom-block s="rowA"></custom-block><block s="up"></block><block s="gotoXY"><block s="reportDifference"><block s="xPosition"></block><l>245</l></block><block s="reportDifference"><block s="yPosition"></block><l>15</l></block></block><block s="down"></block></script><script><custom-block s="rowB"></custom-block><block s="up"></block><block s="gotoXY"><block s="reportDifference"><block s="xPosition"></block><l>240</l></block><block s="reportDifference"><block s="yPosition"></block><l>15</l></block></block><block s="down"></block></script></block></script></block></script></block-definition></blocks><variables></variables></project><media name="U2L4-Brickwall" app="Snap! 5.4, http://snap.berkeley.edu" version="1"></media></snapdata>