<snapdata remixID="9248919"><project name="U2L4-brickwall" app="Snap! 5.4, http://snap.berkeley.edu" version="1"><notes></notes><thumbnail>data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKAAAAB4CAYAAAB1ovlvAAADy0lEQVR4Xu3dQU5bMRhF4bKOroftVGLQVTCo1O2wnq4jlZAyABK4z657If46re0bH588P/uPxN3pdDp98w+BEoE7ApbIi30mQEAiVAkQsIpfOAE5UCVAwCp+4QTkQJUAAav4hROQA1UCBKziF05ADlQJELCKXzgBOVAlQMAqfuEE5ECVAAGr+IUTkANVAgSs4hdOQA5UCRCwil84ATlQJUDAKn7hBORAlQABq/iFE5ADVQIErOIXTkAOVAkQsIpfOAE5UCVAwCp+4QTkQJUAAav4hROQA1UCBKziF05ADlQJELCKXzgBOVAlQMAqfuEE5ECVAAGr+IUTkANVAgSs4hdOQA5UCRCwil84ATlQJUDAKn7hBORAlQABq/iFE5ADVQIErOIXTkAOVAkQsIpfOAE5UCVAwCp+4QTkQJUAAav4hROQA1UCBKziFx4L+PTwGNG6//Xzud1u7SM4Gr0hEAv4+/t9hO/Hn6fndru1j+BoRMCPHBj9An00rv+/TCB+Au62pR6dL8HGCMQCjg2vFwLvE4gFfP1E2PWwcY0D0cYIxAK+PlSMvivd2uHkzGEMv14EnDzdE3DuSxQLaAu+fL95fhWZW4Z9e8cC7ovIzFcSiAU8ei2xW/uVi3TLY8cC3trh4dqijh6ublmSlXMj4Cu6BFyp29uxYwF321KPzvf/LtvtpMUC3s6UzeQzEYgFdA3jGmaFuLGAKiGXf2bmInpOSwKqhMwZNNk7FtAWbAuedO1i91jAFeHGRCAW8Oi1xG7tqTRGIBZQJeQyYIeQMfHOvQioEjJn0GTvWMDdttSj851ch227xwJuS8jElxKIBXQN4xpmhYmxgCohKiEEfIfA6M+oZk/3TsFzWsZPQFuwLXhOtcu9YwFXhBsTgVjAo9cSu7Wn0hiBWMDZd6VrH6/17vavP88Yfr0IqBJS/RbEAu62pR6db3UVv3B4LOAXnqOP/okJxAK6hnENs8LjWECVEJUQAqqErHCgOmb8BLQF24JXmBoLuCLcmAjEAh69ltitPZXGCMQCqoRcBuzXMGPinXsRUCVkzqDJ3rGAu22pR+c7uQ7bdo8F3JaQiS8lEAvoGsY1zAoTYwFVQlRCCKgSssKB6pjxE9AWbAteYWos4IpwYyIQC3j0WmK39lQaIxALqBKiEjKm2Pu9CKgSssKreMxYwN221KPzjYlr+IJALCBuCKwgEAvoGsY1TFVAlRCVEAKqhKxwoDqmLfjhMVqA819Gv/YqEg2i0RsCsYDYIbCCQCzg0WuJ3dqvWJwdxowFVAlRCVnxhfgLR7uq5L+PrNcAAAAASUVORK5CYII=</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="0" y="-300" 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="467" y="77"><block s="gotoXY"><l>0</l><l>0</l></block><block s="clear"></block></script><script x="96" y="81"><custom-block s="draw nrick wall %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="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 s="forward"><l>6</l></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 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