<snapdata remixID="9300613"><project name="U5L9disease extra credit" 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="round" ternary="true" codify="false" inheritance="false" sublistIDs="false" scheduled="true" 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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="Person" idx="1" x="-177.31784809505416" y="-33.53416911703647" heading="3" scale="1" volume="100" pan="0" rotation="1" draggable="true" hidden="true" costume="2" color="80,80,80,1" pen="tip" id="8"><costumes><list id="9"><item><costume name="sick" center-x="6" center-y="6.5" image="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAANCAYAAACdKY9CAAAA8ElEQVQoU43Svy4EURTH8e/vmtl5AZVap0BDNFbDzhQaXkGs1gsQHoBWxCOgUSwqoxGNPwmdWuUF1q57ZNzsFDLZ3Fv+7v2cc5JzRcMx1ierWFx9/b/WKDDyDVq2jdcKjuwv9/Rxdse3TsX1ZSgCmCv2SOygqVudDbUv3zuUpZ0FpMexj+sxbFGW5Ec4dqOA51iWrZbYxHIU0M99NdIb0kwUMHuXpfkTYj4O8CxrFedgm1EAXVQduoiTKGDshD2kay/IzY5F5l81uJ0LgM40mc4w2o1IlPRtS9x81F8jwKKNGyxBMhXg8BOfPoheOSr0C+RuSlrAKxc8AAAAAElFTkSuQmCC" id="10"/></item><item><costume name="healthy" center-x="8" center-y="6.75" image="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA4AAAAOCAYAAAAfSC3RAAABAUlEQVQ4T5WSO07DUBBFzzx/EqGYQAkFJWsA07AE1gESbAWQYBthCTR8tgAlBZTgOIKE2G+Q/RQcx3ziV87cc0dv5gqLbyU9JLPHqNkqW2Kf8M0579HlvFRqXJC84pm1hpkzeOOjvz7rVWCQWjzqRosOijKJTOlT9rrpM7Dx46Rm8YVxtOnAzlCRv4d986owWRXBT0/xOVlympNlnAlh8oAx261Aax+FcDjAyEE7UK8ENKY7umkFjnt7biPLnGLmnKNMI+PAIi25Xvy72WKjnhwVKapu4Cd3eLLzK1xAud6T9XerAFRHiglH1xiC2p8tUz57+yC3zcg1tqOxK1XieckXvJFLRgiVQEUAAAAASUVORK5CYII=" id="11"/></item></list></costumes><sounds><list struct="atomic" id="12"></list></sounds><blocks></blocks><variables></variables><scripts><script x="30" y="24.333333333333343"><block s="receiveGo"></block><custom-block s="initialize"></custom-block><block s="show"></block><block s="doRepeat"><block var="population density"/><script><block s="createClone"><l><option>myself</option></l></block></script></block><block s="hide"></block><custom-block s="activateTimer"></custom-block></script><script x="249.33333333333337" y="36.666666666666686"><block s="receiveOnClone"><comment w="90" collapsed="false">Emily Huang pd.1.</comment></block><custom-block s="cloneInitialize"></custom-block><block s="doForever"><script><block s="doIf"><block s="reportGreaterThan"><block var="time elapsed"/><l>0</l></block><script><block s="bounceOffEdge"></block><block s="forward"><block var="speed"/></block><block s="doIf"><block s="reportEquals"><block s="reportAttributeOf"><l><option>costume name</option></l><block s="reportGet"><l><option>self</option></l></block></block><l>healthy</l></block><script><block s="doIf"><custom-block s="collideWithSick?"></custom-block><script><block s="doIf"><block s="reportEquals"><block var="infected counter"/><block s="reportProduct"><block s="reportQuotient"><block var="vaccinated"/><l>100</l></block><block var="population density"/></block></block><script><block s="doSwitchToCostume"><l>sick</l></block><block s="doChangeVar"><l>infected counter</l><l>1</l></block></script></block></script></block></script></block></script></block></script></block></script><script x="444.33333333333337" y="91"><block s="doSwitchToCostume"><l>sick</l></block></script></scripts></sprite><watcher var="speed" style="normal" x="12.3125" y="12.312500000000007" color="243,118,29" hidden="true"/><watcher scope="Stage" s="getTimer" style="normal" x="139.13125000000014" y="6.156257387499977" color="4,148,220" hidden="true"/><watcher var="time elapsed" style="normal" x="4.788194444444343" y="8.345146276388867" color="243,118,29"/><watcher var="vaccinated" style="normal" x="10" y="10" color="243,118,29" hidden="true"/></sprites></stage><hidden></hidden><headers></headers><code></code><blocks><block-definition s="label %&apos;text&apos; of size %&apos;size&apos;" type="command" category="pen"><comment x="0" y="0" w="90" collapsed="false">LABEL will stamp text on the stage at the given font size. The direction of the text is the direction the sprite is facing, and color will match the pen color.</comment><header></header><code></code><translations></translations><inputs><input type="%txt">Hello!</input><input type="%n">12</input></inputs><script><block s="doRun"><block s="reportJSFunction"><list><l>text</l><l>size</l></list><l>var stage = this.parentThatIsA(StageMorph),&#xD;    context = stage.penTrails().getContext(&apos;2d&apos;),&#xD;    rotation = radians(this.direction() - 90),&#xD;    trans = new Point(&#xD;      this.center().x - stage.left(),&#xD;      this.center().y - stage.top()&#xD;    ),&#xD;    isWarped = this.Warped,&#xD;    len,&#xD;    pos;&#xD;&#xD;if (isWarped) {endWarp(); }&#xD;context.save();&#xD;context.font = size + &apos;px monospace&apos;;&#xD;context.textAlign = &apos;left&apos;;&#xD;context.textBaseline = &apos;alphabetic&apos;;&#xD;context.fillStyle = this.color.toString();&#xD;len = context.measureText(text).width;&#xD;trans = trans.multiplyBy(1 / stage.scale);&#xD;context.translate(trans.x, trans.y);&#xD;context.rotate(rotation);&#xD;context.fillText(text, 0, 0);&#xD;context.translate(-trans.x, -trans.y);&#xD;context.restore();&#xD;pos = new Point(&#xD;  len * Math.sin(radians(this.direction())),&#xD;  len * Math.cos(radians(this.direction())));&#xD;pos = pos.add(new Point(this.xPosition(), this.yPosition()));&#xD;this.gotoXY(pos.x, pos.y, false);&#xD;this.changed();&#xD;if (isWarped) {this.startWarp(); }&#xD;stage.changed();</l></block><list><block var="text"/><block var="size"/></list></block></script></block-definition><block-definition s="map %&apos;function&apos; over %&apos;lists&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%repRing"></input><input type="%mult%l"></input></inputs><script><block s="doWarp"><script><block s="doDeclareVariables"><list><l>mapone</l><l>mapmany</l></list></block><block s="doSetVar"><l>mapone</l><block s="reifyScript"><script><block s="doIf"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doReport"><block s="reportNewList"><list></list></block></block></script></block><block s="doReport"><block s="reportCONS"><block s="evaluate"><block var="function"/><list><block s="reportListItem"><l>1</l><block var="data"/></block></list></block><block s="evaluate"><block var="mapone"/><list><block s="reportCDR"><block var="data"/></block></list></block></block></block></script><list><l>data</l></list></block></block><block s="doSetVar"><l>mapmany</l><block s="reifyScript"><script><block s="doIf"><custom-block s="empty? %l"><block s="reportListItem"><l>1</l><block var="data lists"/></block></custom-block><script><block s="doReport"><block s="reportNewList"><list></list></block></block></script></block><block s="doReport"><block s="reportCONS"><block s="evaluate"><block var="function"/><custom-block s="map %repRing over %mult%l"><block s="reifyReporter"><autolambda><block s="reportListItem"><l>1</l><l/></block></autolambda><list></list></block><list><block var="data lists"/></list></custom-block></block><block s="evaluate"><block var="mapmany"/><list><custom-block s="map %repRing over %mult%l"><block s="reifyReporter"><autolambda><block s="reportCDR"><l/></block></autolambda><list></list></block><list><block var="data lists"/></list></custom-block></list></block></block></block></script><list><l>data lists</l></list></block></block><block s="doIfElse"><custom-block s="empty? %l"><block s="reportCDR"><block var="lists"/></block></custom-block><script><block s="doReport"><block s="evaluate"><block var="mapone"/><list><block s="reportListItem"><l>1</l><block var="lists"/></block></list></block></block></script><script><block s="doReport"><block s="evaluate"><block var="mapmany"/><list><block var="lists"/></list></block></block></script></block></script></block></script></block-definition><block-definition s="empty? %&apos;data&apos;" type="predicate" category="lists"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doReport"><block s="reportEquals"><block var="data"/><block s="reportNewList"><list></list></block></block></block></script></block-definition><block-definition s="keep items such that %&apos;pred&apos; from %&apos;data&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%predRing"></input><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doIf"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doReport"><block s="reportNewList"><list></list></block></block></script></block><block s="doIfElse"><block s="evaluate"><block var="pred"/><list><block s="reportListItem"><l>1</l><block var="data"/></block></list></block><script><block s="doReport"><block s="reportCONS"><block s="reportListItem"><l>1</l><block var="data"/></block><custom-block s="keep items such that %predRing from %l"><block var="pred"/><block s="reportCDR"><block var="data"/></block></custom-block></block></block></script><script><block s="doReport"><custom-block s="keep items such that %predRing from %l"><block var="pred"/><block s="reportCDR"><block var="data"/></block></custom-block></block></script></block></script></block></script></block-definition><block-definition s="combine with %&apos;function&apos; items of %&apos;data&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%repRing"></input><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doIf"><custom-block s="empty? %l"><block s="reportCDR"><block var="data"/></block></custom-block><script><block s="doReport"><block s="reportListItem"><l>1</l><block var="data"/></block></block></script></block><block s="doReport"><block s="evaluate"><block var="function"/><list><block s="reportListItem"><l>1</l><block var="data"/></block><custom-block s="combine with %repRing items of %l"><block var="function"/><block s="reportCDR"><block var="data"/></block></custom-block></list></block></block></script></block></script></block-definition><block-definition s="if %&apos;test&apos; then %&apos;true&apos; else %&apos;false&apos;" type="reporter" category="control"><header></header><code></code><translations></translations><inputs><input type="%b"></input><input type="%anyUE"></input><input type="%anyUE"></input></inputs><script><block s="doIfElse"><block var="test"/><script><block s="doReport"><block s="evaluate"><block var="true"/><list></list></block></block></script><script><block s="doReport"><block s="evaluate"><block var="false"/><list></list></block></block></script></block></script></block-definition><block-definition s="for %&apos;i&apos; = %&apos;start&apos; to %&apos;end&apos; %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%n">1</input><input type="%n">10</input><input type="%cs"></input></inputs><script><block s="doDeclareVariables"><list><l>step</l><l>tester</l></list></block><block s="doIfElse"><block s="reportGreaterThan"><block var="start"/><block var="end"/></block><script><block s="doSetVar"><l>step</l><l>-1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportLessThan"><block var="i"/><block var="end"/></block></autolambda><list></list></block></block></script><script><block s="doSetVar"><l>step</l><l>1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportGreaterThan"><block var="i"/><block var="end"/></block></autolambda><list></list></block></block></script></block><block s="doSetVar"><l>i</l><block var="start"/></block><block s="doUntil"><block s="evaluate"><block var="tester"/><list></list></block><script><block s="doRun"><block var="action"/><list></list></block><block s="doChangeVar"><l>i</l><block var="step"/></block></script></block></script></block-definition><block-definition s="join words %&apos;words&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%mult%txt"></input></inputs><script><block s="doWarp"><script><block s="doIf"><custom-block s="empty? %l"><block s="reportCDR"><block var="words"/></block></custom-block><script><block s="doReport"><block s="reportListItem"><l>1</l><block var="words"/></block></block></script></block><block s="doIf"><block s="reportEquals"><l></l><block s="reportListItem"><l>1</l><block var="words"/></block></block><script><block s="doReport"><custom-block s="join words %mult%txt"><block s="reportCDR"><block var="words"/></block></custom-block></block></script></block><block s="doIf"><block s="reportEquals"><l></l><block s="reportListItem"><l>2</l><block var="words"/></block></block><script><block s="doReport"><custom-block s="join words %mult%txt"><block s="reportCONS"><block s="reportListItem"><l>1</l><block var="words"/></block><block s="reportCDR"><block s="reportCDR"><block var="words"/></block></block></block></custom-block></block></script></block><block s="doReport"><block s="reportJoinWords"><list><block s="reportListItem"><l>1</l><block var="words"/></block><l> </l><custom-block s="join words %mult%txt"><block s="reportCDR"><block var="words"/></block></custom-block></list></block></block></script></block></script><scripts><script x="229.00000300000002" y="196.77778077777774"><block s="reportJoinWords"><list><l></l><l></l></list></block></script></scripts></block-definition><block-definition s="list $arrowRight sentence %&apos;data&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doReport"><custom-block s="join words %mult%txt"><block var="data"/></custom-block></block></script></block></script></block-definition><block-definition s="sentence $arrowRight list %&apos;text&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%txt"></input></inputs><script><block s="doWarp"><script><block s="doReport"><block s="reportTextSplit"><block var="text"/><l><option>whitespace</option></l></block></block></script></block></script></block-definition><block-definition s="catch %&apos;tag&apos; %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%cs"></input></inputs><script><block s="doCallCC"><block s="reifyScript"><script><block s="doSetVar"><l>tag</l><block var="cont"/></block><block s="doRun"><block var="action"/><list></list></block></script><list><l>cont</l></list></block></block></script></block-definition><block-definition s="throw %&apos;cont&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">catchtag</input></inputs><script><block s="doRun"><block var="cont"/><list></list></block></script></block-definition><block-definition s="catch %&apos;tag&apos; %&apos;value&apos;" type="reporter" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%anyUE"></input></inputs><script><block s="doCallCC"><block s="reifyScript"><script><block s="doSetVar"><l>tag</l><block var="cont"/></block><block s="doReport"><block s="evaluate"><block var="value"/><list></list></block></block></script><list><l>cont</l></list></block></block></script></block-definition><block-definition s="throw %&apos;tag&apos; %&apos;value&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">catchtag</input><input type="%s"></input></inputs><script><block s="doRun"><block var="tag"/><list><block var="value"/></list></block></script></block-definition><block-definition s="for each %&apos;item&apos; of %&apos;data&apos; %&apos;action&apos;" type="command" category="lists"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%l"></input><input type="%cs"></input></inputs><script><block s="doUntil"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doSetVar"><l>item</l><block s="reportListItem"><l>1</l><block var="data"/></block></block><block s="doRun"><block var="action"/><list><block s="reportListItem"><l>1</l><block var="data"/></block></list></block><block s="doSetVar"><l>data</l><block s="reportCDR"><block var="data"/></block></block></script></block></script></block-definition><block-definition s="if %&apos;test&apos; do %&apos;action&apos; and pause all $pause-1-255-220-0" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%boolUE"></input><input type="%cs"></input></inputs><script><block s="doDeclareVariables"><list><l>breakpoint</l></list></block><block s="doIf"><block s="evaluate"><block var="test"/><list></list></block><script><block s="doSetVar"><l>breakpoint</l><block var="test"/></block><block s="doShowVar"><l>breakpoint</l></block><block s="doRun"><block var="action"/><list></list></block><block s="doPauseAll"></block><block s="doHideVar"><l></l></block></script></block></script></block-definition><block-definition s="word $arrowRight list %&apos;word&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%txt"></input></inputs><script><block s="doWarp"><script><block s="doReport"><block s="reportTextSplit"><block var="word"/><l><option>letter</option></l></block></block></script></block></script></block-definition><block-definition s="ignore %&apos;x&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs></block-definition><block-definition s="tell %&apos;sprite&apos; to %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">Sprite</input><input type="%cs"></input></inputs><script><block s="doRun"><block s="reportAttributeOf"><block var="action"/><block var="sprite"/></block><list></list></block></script></block-definition><block-definition s="ask %&apos;sprite&apos; for %&apos;expression&apos;" type="reporter" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">Sprite</input><input type="%repRing"></input></inputs><script><block s="doReport"><block s="evaluate"><block s="reportAttributeOf"><block var="expression"/><block var="sprite"/></block><list></list></block></block></script></block-definition><block-definition s="list $arrowRight word %&apos;list&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doReport"><block s="reportJoinWords"><block var="list"/></block></block></script></block></script></block-definition><block-definition s="activateTimer" type="command" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doResetTimer"></block><block s="doUntil"><block s="reportEquals"><block var="infected counter"/><block var="population density"/></block><script><block s="doSetVar"><l>time elapsed</l><block s="getTimer"></block></block></script></block><block s="doStopThis"><l><option>all but this script</option></l></block></script></block-definition><block-definition s="initialize" type="command" category="other"><comment w="90" collapsed="false">Emily Huang Pd.1.</comment><header></header><code></code><translations></translations><inputs></inputs><script><block s="doSetVar"><l>time elapsed</l><l>0</l></block><block s="doSetVar"><l>infected counter</l><l>0</l></block><block s="gotoXY"><l>0</l><l>0</l></block><block s="doAsk"><l>How densely populated is the area? 1(sparse) - 250 (very dense)</l></block><block s="doSetVar"><l>population density</l><block s="reportSum"><block s="getLastAnswer"></block><l>1</l></block></block><block s="doAsk"><l>What percentage of the population is infected initially? Enter 1-100.</l></block><block s="doSetVar"><l>percent initially sick</l><block s="getLastAnswer"></block></block><block s="doAsk"><l>How often are people interacting? Enter 1 (not much) - 10 (a lot)</l></block><block s="doSetVar"><l>speed</l><block s="getLastAnswer"></block></block><block s="doAsk"><l>How many percent of people are vaccinated?</l></block><block s="doSetVar"><l>vaccinated</l><block s="getLastAnswer"></block></block></script></block-definition><block-definition s="cloneInitialize" type="command" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doSwitchToCostume"><l>healthy</l></block><block s="doIf"><block s="reportLessThan"><block var="infected counter"/><block s="reportProduct"><block var="population density"/><block s="reportQuotient"><block var="percent initially sick"/><l>100</l></block></block></block><script><block s="doSwitchToCostume"><l>sick</l></block><block s="doChangeVar"><l>infected counter</l><l>1</l></block></script></block><block s="setHeading"><block s="reportRandom"><l>1</l><l>360</l></block></block><block s="gotoXY"><block s="reportRandom"><l>-240</l><l>240</l></block><block s="reportRandom"><l>-180</l><l>180</l></block></block></script></block-definition><block-definition s="collideWithSick?" type="predicate" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><custom-block s="for each %upvar of %l %cs"><l>item</l><block s="reportGet"><l><option>neighbors</option></l></block><script><block s="doIf"><block s="reportAnd"><block s="reportTouchingObject"><block var="item"/></block><block s="reportEquals"><block s="reportAttributeOf"><l><option>costume name</option></l><block var="item"/></block><l>sick</l></block></block><script><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script></block></script></custom-block><block s="doReport"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block-definition><block-definition s="vaccinated" type="reporter" category="variables"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><l></l></block></script></block-definition></blocks><variables><variable name="speed"><l>5</l></variable><variable name="percent initially sick"><l>20</l></variable><variable name="time elapsed"><l>10.9</l></variable><variable name="infected counter"><l>5</l></variable><variable name="population density"><l>21</l></variable><variable name="vaccinated"><l>20</l></variable></variables></project><media name="U5L9disease extra credit" app="Snap! 5.4, http://snap.berkeley.edu" version="1"></media></snapdata>