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image="data:image/png;base64,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" id="10"/></item><item><costume name="sick" center-x="12" center-y="26" image="data:image/png;base64,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" id="11"/></item></list></costumes><sounds><list struct="atomic" id="12"></list></sounds><blocks></blocks><variables><variable name="infected?"><bool>false</bool></variable></variables><scripts><script x="13.333333333333334" y="30.888888888888914"><custom-block s="simulate disease, population: %n percent infected: %n speed: %n"><l>100</l><l>5</l><l>2</l></custom-block></script><script x="17" y="61.44444444444442"><custom-block s="touching infected person?"></custom-block></script><script x="16.666666666666668" y="89.5555555555557"><block s="receiveOnClone"></block><custom-block s="initialize clone"></custom-block><block s="doWaitUntil"><block var="clones ready?"><comment w="295.3333333333333" collapsed="true">This will be true when all the clones have been created.</comment></block></block><block s="doUntil"><block s="reportEquals"><block var="number infected"/><block var="population"/></block><script></script><comment w="220" collapsed="false">Move the clone and&#xD;make it infected if it&apos;s touching an infected one.</comment></block></script><comment x="11.333333333333334" y="6.666666666666667" w="331.3333333333333" collapsed="true">There are things to write inside these blocks:</comment></scripts></sprite><watcher scope="Sprite" var="infected?" style="normal" x="9.999999999999545" y="10.000000000000007" color="243,118,29" hidden="true"/><watcher var="number infected" style="normal" x="9.999999999999545" y="40.000001999999995" color="243,118,29" hidden="true"/></sprites></stage><hidden></hidden><headers></headers><code></code><blocks><block-definition s="simulate disease, population: %&apos;population input&apos; percent infected: %&apos;percent initially infected input&apos; speed: %&apos;speed input&apos;" type="reporter" category="other"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input><input type="%n"></input></inputs><script><block s="doDeclareVariables"><list><l>elapsed time</l><l>start time</l></list></block><block s="doSetVar"><l>clones ready?</l><block s="reportBoolean"><l><bool>false</bool></l></block></block><custom-block s="initialize simulation %n %n %n"><block var="population input"/><block var="percent initially infected input"/><block var="speed input"/></custom-block><block s="show"></block><block s="doRepeat"><l></l><script></script><comment w="136.66666666666666" collapsed="true">Create the clones.</comment></block><block s="hide"></block><block s="doSetVar"><l>start time</l><block s="reportDate"><l><option>time in milliseconds</option></l></block></block><block s="doSetVar"><l>clones ready?</l><block s="reportBoolean"><l><bool>true</bool></l></block></block><block s="doWaitUntil"><l/><comment w="135.33333333333334" collapsed="false">Wait until everyone is&#xD;infected.</comment></block><block s="doSetVar"><l>elapsed time</l><block s="reportQuotient"><block s="reportDifference"><block s="reportDate"><l><option>time in milliseconds</option></l></block><block var="start time"/></block><l>1000</l></block></block><block s="doBroadcast"><l>vanish</l></block><block s="doReport"><block var="elapsed time"/></block></script></block-definition><block-definition s="average time for disease spread with population size: %&apos;size&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%n"></input></inputs><script><block s="bubble"><l></l></block><block s="doReport"><block s="reportQuotient"><block s="reportCombine"><block s="reportMap"><block s="reifyReporter"><autolambda><custom-block s="simulate disease, population: %n percent infected: %n speed: %n"><block var="size"/><l>10</l><l>2</l></custom-block></autolambda><list></list></block><block s="reportNumbers"><l>1</l><l>10</l></block></block><block s="reifyReporter"><autolambda><block s="reportSum"><l></l><l></l></block></autolambda><list></list></block></block><l>10</l></block></block></script></block-definition><block-definition s="initialize clone" type="command" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doIf"><block s="reportLessThan"><block var="number infected"/><block s="reportProduct"><block var="population"/><block s="reportQuotient"><block var="percent initially infected"/><l>100</l></block></block></block><script><block s="doChangeVar"><l>number infected</l><l>1</l></block><block s="doSetVar"><l>infected?</l><block s="reportBoolean"><l><bool>true</bool></l></block></block><block s="doSwitchToCostume"><l>sick</l></block></script></block><block s="doGotoObject"><l><option>random position</option></l></block><block s="doFaceTowards"><l><option>random position</option></l></block></script></block-definition><block-definition s="touching infected person?" type="predicate" category="sensing"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doForEach"><l>neighbor</l><block s="reportGet"><l><option>neighbors</option></l></block><script></script><comment w="174.66666666666666" collapsed="false">Fill in the blank to check whether&#xD;this clone is touching an infected one.</comment></block><block s="doReport"><l></l></block></script></block-definition><block-definition s="initialize simulation %&apos;pop&apos; %&apos;inf&apos; %&apos;sp&apos;" type="command" category="variables"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input><input type="%n"></input></inputs><script><block s="doSetVar"><l>population</l><block var="pop"/><comment w="216.66666666666666" collapsed="true">Make global so &quot;when I start&quot; can use it.</comment></block><block s="doSetVar"><l>percent initially infected</l><block var="inf"/></block><block s="doSetVar"><l>speed</l><block var="sp"/></block><block s="doSetVar"><l>clones ready?</l><block s="reportBoolean"><l><bool>false</bool></l></block></block><block s="doSetVar"><l>number infected</l><l>0</l></block><block s="doSetVar"><l>infected?</l><block s="reportBoolean"><l><bool>false</bool></l></block></block><block s="doSwitchToCostume"><l>well</l></block><block s="setScale"><l>50</l></block></script></block-definition></blocks><variables><variable name="number infected"><l>0</l></variable><variable name="population"><l>100</l></variable><variable name="percent initially infected"><l>5</l></variable><variable name="speed"><l>2</l></variable><variable name="clones ready?"><bool>true</bool></variable></variables></project>