<snapdata remixID="8783267"><project name="U2L4-brickwall" 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="0" y="-200.00000000000148" 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="53.18717347916663" y="56.33333333333334"><custom-block s="draw brick, length: %n width: %n"><l>50</l><l>10</l></custom-block></script><script x="214.5205068125" y="195"><custom-block s="Draw brick wall with %n rows"><l>20</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="Draw brick wall with %&apos;number of rows&apos; rows" 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>-200</l><l>100</l></block><block s="doIfElse"><custom-block s="even? %n"><block var="number of rows"/></custom-block><script><block s="doRepeat"><block s="reportQuotient"><block var="number of rows"/><l>2</l></block><script><block s="setXPosition"><l>-100</l></block><custom-block s="row a"></custom-block><block s="changeYPosition"><l>-15</l></block><block s="setXPosition"><l>-100</l></block><custom-block s="row b"></custom-block><block s="changeYPosition"><l>-15</l></block></script></block></script><script><block s="doRepeat"><block s="reportQuotient"><block var="number of rows"/><l>2</l></block><script><block s="setXPosition"><l>-100</l></block><custom-block s="row a"></custom-block><block s="changeYPosition"><l>-15</l></block><block s="setXPosition"><l>-100</l></block><custom-block s="row b"></custom-block><block s="changeYPosition"><l>-15</l></block></script></block><block s="setXPosition"><l>-100</l></block><custom-block s="row a"></custom-block><block s="changeYPosition"><l>-15</l></block></script></block></script></block-definition><block-definition s="row a" type="command" category="motion"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doRepeat"><l>3</l><script><custom-block s="draw brick, length: %n width: %n"><l>30</l><l>10</l></custom-block><block s="forward"><l>5</l></block></script></block></script></block-definition><block-definition s="row b" type="command" category="motion"><header></header><code></code><translations></translations><inputs></inputs><script><custom-block s="draw brick, length: %n width: %n"><l>15</l><l>10</l></custom-block><block s="forward"><l>5</l></block><block s="doRepeat"><l>1</l><script><custom-block s="draw brick, length: %n width: %n"><l>30</l><l>10</l></custom-block><block s="forward"><l>5</l></block></script></block><custom-block s="draw brick, length: %n width: %n"><l>30</l><l>10</l></custom-block><block s="forward"><l>5</l></block><custom-block s="draw brick, length: %n width: %n"><l>10</l><l>10</l></custom-block></script></block-definition><block-definition s="%&apos;a number #&apos; between? %&apos;number 1 #&apos; and %&apos;number 2 #&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="doIfElse"><block s="reportOr"><block s="reportAnd"><block s="errorObsolete"></block><block s="errorObsolete"></block></block><block s="reportAnd"><block s="errorObsolete"></block><block s="errorObsolete"></block></block></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 a&apos; divisable by %&apos;number b #&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input></inputs><script><block s="doIf"><block s="reportEquals"><block s="reportModulus"><block var="number a"/><block var="number b #"/></block><l>0</l></block><script><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script></block><block s="doReport"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block-definition><block-definition s="even? %&apos;a number&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%n"></input></inputs><script><block s="doIfElse"><custom-block s="%s divisable by %s"><block var="a number"/><l>2</l></custom-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="integer? %&apos;a number&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%n"></input></inputs><script><block s="doIfElse"><custom-block s="%s divisable by %s"><block s="reportRound"><block var="a number"/></block><l>1</l></custom-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></blocks><variables></variables></project><media name="U2L4-brickwall" app="Snap! 5.1, http://snap.berkeley.edu" version="1"></media></snapdata>