<snapdata remixID="11954589"><project name="U5L2-Simulation" app="Snap! 7, https://snap.berkeley.edu" version="2"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><scenes select="1"><scene name="U5L2-Simulation"><notes></notes><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"><block s="reportDifference"><block var="population input"/><block s="reportQuotient"><block s="reportVariadicProduct"><list><block var="percent initially infected input"/><block var="population input"/></list></block><l>100</l></block></block><script><block s="doSwitchToCostume"><l>well</l></block><block s="createClone"><l><option>myself</option></l></block></script><comment w="136.66666666666666" collapsed="true">Create the clones.</comment></block><block s="doRepeat"><block s="reportQuotient"><block s="reportVariadicProduct"><list><block var="percent initially infected input"/><block var="population input"/></list></block><l>100</l></block><script><block s="createClone"><l><option>myself</option></l></block></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"><block s="reportEquals"><block s="reportEquals"><block s="getCostumeIdx"></block><l>2</l></block><block s="reportAnd"><block s="reportAttributeOf"><l><option>costume #</option></l><block s="reportGet"><l><option>self</option></l></block></block><block s="reportAttributeOf"><l><option>costume #</option></l><block s="reportGet"><l><option>neighbors</option></l></block></block></block></block><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><list></list></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="reportVariadicSum"><list><l></l><l></l></list></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="reportVariadicProduct"><list><block var="population"/><block s="reportQuotient"><block var="percent initially infected"/><l>100</l></block></list></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><block s="doIf"><block s="reportEquals"><block s="reportAnd"><block s="reportTouchingObject"><block var="neighbor"/></block><block s="reportEquals"><block s="reportAttributeOf"><l><option>costume #</option></l><block var="neighbor"/></block><l>2</l></block></block><block s="reportBoolean"><l><bool>true</bool></l></block></block><script><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script></block></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"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script><scripts><script x="126" y="300.8"><block s="doReport"><l></l></block></script><script x="89.9951171875" y="266.8"><block s="reportBoolean"><l><bool>true</bool></l></block></script><script x="279" y="227.63333333333333"><block s="doSwitchToCostume"><l>sick</l></block></script></scripts></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><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="false" hyperops="true" codify="false" inheritance="true" sublistIDs="false" id="244"><pentrails>data:image/png;base64,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</pentrails><costumes><list struct="atomic" id="245"></list></costumes><sounds><list struct="atomic" id="246"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites select="1"><sprite name="Sprite" idx="1" x="9" y="95" heading="78.5" scale="0.5" volume="100" pan="0" rotation="0" draggable="true" hidden="true" costume="1" color="80,80,80,1" pen="tip" id="251"><costumes><list id="252"><item><ref mediaID="Sprite_cst_well"></ref></item><item><ref mediaID="Sprite_cst_sick"></ref></item></list></costumes><sounds><list struct="atomic" id="253"></list></sounds><blocks></blocks><variables><variable name="infected?"><bool>false</bool></variable></variables><scripts><script x="384.6666666666665" y="32.16666666666697"><block s="receiveGo"></block><block s="doSetVar"><l>elapsed time</l><l>0</l></block><block s="doAsk"><l>what size population do you want?1-300</l></block><block s="doSetVar"><l>population</l><block s="getLastAnswer"></block></block><block s="doAsk"><l>what precent is infected? 1-100</l></block><block s="doSetVar"><l>percent initially infected</l><block s="getLastAnswer"></block></block><block s="doAsk"><l>What speed does the population move ?1-10</l></block><block s="doSetVar"><l>speed</l><block s="getLastAnswer"></block></block><block s="doReport"><custom-block s="simulate disease, population: %n percent infected: %n speed: %n"><block var="population"/><block var="percent initially infected"/><block var="speed"/></custom-block></block></script><script x="30" y="30"><block s="receiveOnClone"></block><block s="doResetTimer"></block><custom-block s="initialize clone"></custom-block><block s="doWaitUntil"><block var="clones ready?"/></block><block s="doUntil"><block s="reportEquals"><block var="number infected"/><block var="population"/></block><script><block s="doIf"><block s="reportEquals"><custom-block s="touching infected person?"></custom-block><block s="reportBoolean"><l><bool>true</bool></l></block></block><script><block s="doIf"><block s="reportEquals"><block s="getCostumeIdx"></block><l>1</l></block><script><block s="doSwitchToCostume"><l>sick</l></block><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></script></block></script></block><block s="forward"><block var="speed"/></block><block s="bounceOffEdge"></block></script></block><block s="doUntil"><block s="reportEquals"><block var="number infected"/><block var="population"/></block><script><block s="doSetVar"><l>elapsed time</l><block s="getTimer"></block></block></script></block><block s="doSetVar"><l>elapsed time</l><block s="getTimer"></block></block><block s="doReport"><block var="elapsed time"/></block></script></scripts></sprite><watcher scope="Sprite" var="infected?" style="normal" x="9.999999999999545" y="10.000000000000007" color="243,118,29" hidden="true"/><watcher var="elapsed time" style="normal" x="3" y="2" color="243,118,29"/><watcher var="number infected" style="normal" x="0.9999999999995453" y="27.000001999999995" color="243,118,29"/><watcher var="speed" style="normal" x="2" y="52.00000399999999" color="243,118,29"/><watcher var="population" style="normal" x="-1" y="76.00000599999998" color="243,118,29"/><watcher var="percent initially infected" style="normal" x="-1" y="101.00000799999998" color="243,118,29"/><watcher var="clones ready?" style="normal" x="-2" y="126.000002" color="243,118,29"/></sprites></stage><variables><variable name="number infected"><l>100</l></variable><variable name="population"><l>100</l></variable><variable name="percent initially infected"><l>50</l></variable><variable name="speed"><l>5</l></variable><variable name="clones ready?"><bool>true</bool></variable><variable name="elapsed time"><l>5.8</l></variable></variables></scene></scenes></project><media name="U5L2-Simulation" app="Snap! 7, https://snap.berkeley.edu" version="2"><costume name="well" center-x="12" center-y="26" 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