Scratch Recycling - Dale Lanedalelane.co.uk › drpbx › codeclubprojects › en-GB ›...

1TheseprojectsareforuseinCodeClubswithintheUK.Forc lubsoutsidetheUK,pleasevisitprojects.codeclubworld.org.Ourcurriculumisdeveloped

intheopenonGitHub(github.com/CodeClub),andweencouragecontributionsfromourcommunity-comeandjoinus!

ActivityChecklist

AllCodeClubsmustberegistered.Registeredclubsappearonthemapatcodeclub.org.uk-ifyourclubisnotonthemapthenvisitjumpto.cc/18CpLPytofindoutwhattodo.

IntroductionWe’regoingtomakearecyclinggame!Catchthefallingitems,andput

theminthecorrectrecyclingbins.

Usethearrowkeystorunleftandright

Pressspacebartothrowwhatyou’recarrying

Gettherubbishinthecorrectrecyclingbin

FollowtheseINSTRUCTIONSonebyone

RecyclingScratch

+



TestyourProject

SaveyourProject

ClickonthegreenflagtoTESTyourcode

MakesuretoSAVEyourworknow



Step1:Createthecharacterthatwillpickuptherubbish

ActivityChecklist

1. StartanewScratchproject.

2. ChangethenameofSprite1tocatbyclickingontheblue i

symbol

3. Makesurethatitwillonlyflipleft-rightwiththeside-to-side

arrow.

4. Createavariable,forthisspriteonly,calledrunningspeed

5. Createavariable,forthisspriteonly,calledmaxspeed

6. Createavariable,forthisspriteonly,calledcats-direction

7. Untickallthreevariablessothey’renotshownontheStage



8. UsetheMakeaBlockbuttoninMoreBlockstocreateanew

customblock

9. Namethenewcustomblockreset

10. Addascripttotheresetblockthatwillputthecatintheright

startingplaceandsetthespeedvariables

11. Createanothercustomblock,calledrun

12. Addthefollowingscripttorun,tomakeitpossibleforthecat

torunattherunningspeed,andslowdowngradually



13. Combinethesewhenthegreenflagisclicked

14. Createacustomblockcalled“changedirectionifneeded”.It

shouldtakeonenumberinputcalleddirection



15. Createacustomblockcalledspeedupifpossiblewhichwill

increasespeed,butonlyuntilthecatreachesmaxspeed

16. Starttobringthesetogetherwithanewcustomblockcalled

handlebuttonpresswhichtakesonenumberinputcalled

button-direction



17. Finally,addascriptblockthatwillusethesecustomblocksto

controlthecat’srunning

18. Duplicateeachofthecat’stwocostumes.Wewanttwoofthe

firstcostume,andtwoofthesecondcostume.Thiswillprevent

therunninganimationfromflickeringtoomuch



TestYourProject

Clickthegreenflag.

Saveyourproject

Usetheleftandrightarrowstorunfromsidetoside

Ifyouletgoofthearrowkeyafterpickingupspeed,thecatshould

slowdowngraduallyinsteadofstoppinginstantly

Ifyouswitchdirectionswhilerunning,thecatshouldskidinthewrong

directionbrieflybeforeswitching



Thingstotry

Tryadjustingthespeeds-thenumberinspeedupif

possiblecontrolshowfastthecataccelerates,the

maxspeedvalueinresetcontrolsthecat’stopspeed.



Step2:Addfallingrubbish

It’stimetomakeitemsforthecattorecycle!

ActivityChecklist

Preparethesprite

1. Uploadanewsprite,choosingResources/can.png

2. SwitchtotheCostumestab,anduploadanothercostume

usingResources/jar.png

3. UploadanothercostumeusingResources/newspaper.png

4. Thespriteshouldnowhavethreecostumes:acan,ajaranda

newspaper



Gettherubbishtofallfromthesky

5. Clickontheblue i nexttothesprite,andrenamethesprite

tobecalledobject

6. ResizethespritebyclickingontheShrinkbuttonatthetop

7. ClickontheSpriteinthemainstagewindowseveraltimes,until

itissmallerthanthecat

1. Createavariablethatwillcontrolthespeedtherubbishfalls,

calledspeed



2. Untickthevariablesothevalueisn’tshownonthemainstage

3. Createacustomblockcalledresetthatwillsetthespeedto0

atthestart

4. Createacustomblockcalledfallingthatwillmaketheobject

fallatthisspeed



5. Createacustomblockcalledgravitythatwillmakeitspeedup

asitfalls,butstopwhenithitstheground

6. Createacustomblockcalledchooseobjecttypethatwill

chooseatypeofrubbish



7. Createacustomblockcalledstartatthetopthatmakes

eachnewbitofrubbishstartatadifferentplace

8. Createacustomblockcallednewobjecteveryfourseconds

9. Bringitalltogetherbycreatingthefollowingscript



TestYourProject

Clickthegreenflag.Thecatshouldstillbeabletorunaround,butnow

rubbishshouldrainfromthesky,spinningasitfalls.

Thingstotry

Step3:Carryingtherubbish

Nowwewanttomakethecattobeabletopickupfallenrubbishandcarryit.

ActivityChecklist

Selecttherubbishobjectsprite.

Createvariablesthatwillletusdescribethedifferentcostumesof

object

Saveyourproject

Trychangingnewobjecteveryfoursecondstomake

rubbishfallmoreorlessoften

Trychanginggravitytochangethespeedthatobjectsfall

1. Createanewvariable,forthisspriteonly,calledcan

2. Createanewvariable,forthisspriteonly,calledjar

3. Createanewvariable,forthisspriteonly,callednewspaper

4. Untickthemallsothey’renotshownonthestage

5. Modifytheexistingresetcustomblocksothatitlookslike

this.Thenumbersshouldmatchthecostumenumbersforthe

sprite.



Createvariablestocontrolwhatthecatiscarrying

Controlhowobjectscanbecarried

1. Createanewvariable,forthisspriteonly,callednothing

2. Createanewvariable,forallsprites,calledcarrying

3. Untickthembothsothey’renotshownonthestage

4. Modifytheexistingresetcustomblock,toincludesettingboth

nothingandcarryingto4.Itshouldenduplookinglikethis.

1. Createanewcustomblockcalledwaittobecarriedthatlets

thecatpickupanobjectifit’snotalreadycarryingsomething.

Thiswillincludecreatinganeweventtobroadcastcarry-



TestYourProject

Tryoutyourgameagain.

Thecatcancarryanitemofrubbish,andwilldropitwhenyoupressthe

spacebar.

change

2. Createanewscriptsoeachnewpieceofrubbishcanbe

carried

Saveyourproject



Step4:Throwingtherubbish

Thenextstepisforthecattobeabletothrowtherubbishit’scarryinginto

theairinsteadofdroppingit.

ActivityChecklist

1. Createacustomblockcalledthrowintheair

2. Modifytheexistingwaittobecarriedblocksothatthecat

throwstheobjectinsteadofdroppingitwhenyoupressspace.

Itshouldenduplikethis.



TestYourProject


Thecatcancarryanitemofrubbish,andwillthrowitintheairwhenyou

pressthespacebar.Itwillfallbacktothegroundandcanbepickedup

again.

Step5:Creatingrecyclingbins

ActivityChecklist

Startbysettingupabackgroundforthebins.

Addbinstothebackground

Saveyourproject

1. ClickonStage

2. ClickontheBackdropstab

3. ClickonChoosebackdropfromlibraryandchoosea

backgroundlikeboardwalk

4. Deletetheoriginalblankbackdrop‘backdrop1’

1. ClickonConverttovector

2. ClickonImportontheBackdropstab



Addlabelstothebins

3. ChooseResources/bin.png

4. ClickonSelect

5. Selectthebinandmoveandresizeittoputitonthe

boardwalkpath

6. Addtwomorebinssoitendsuplookingsomethinglikethis:



Addthebinopenings

1. ClickonText

2. Addlabelstothebins-oneformetal,oneforglass,onefor

paper

1. ClickonPaintnewsprite

2. ClickontheCostumestab

3. ClickonConverttovector

4. Drawafilledovalthatmatchestheopeningforoneofthebins

5. Clickontheblue i andrenametheSpritetobin-can

6. Addascriptthatdrawsthebinbehindthrownrubbish



Gettherubbishtogointhebins

7. Duplicatethesprite

8. Calltheduplicatebin-jar

9. Moveittocoverthesecondbinopening

10. Duplicatethespriteagain

11. Calltheduplicatebin-newspaper

12. Moveittocoverthethirdbinopening

1. Clickontheobjectsprite

2. Createanewcustomblockcalledrubbishbinned

3. Createanewcustomblockcalledgointhebin



4. Modifytheexistingwaittobecarriedcustomblocksothat

thrownobjectscangointhebininsteadoffallingbackdown.

Itshouldenduplookinglikethis.



TestYourProject


Thecatcannowthrowitemsintobins.Itemswillonlygointothecorrect

bins,otherwisethey’llfallbackdownontotheground.

Step6:Keepscore

Saveyourproject

Createanewvariable,forallsprites,calledscore

Movethescorevariableinthestageupintothecorner

Modifythecustomresetblockinthescriptsfortherubbishobjectsto

resetthescoreto0,soitshouldlooklike:

Modifythecustomrubbishbinnedblocksothatitaddstothescore.It

shouldlooklike:



TestYourProject


Thecatgetsapointforeveryitemthatisputintothecorrectrecycling

bin.

Saveyourproject

Welldone,you’vefinished!Nowyoucanenjoyyourgame!

Don’tforgetyoucanshareyourgamewithallyourfriendsandfamilyby

clickingonShareonthemenubar!

Scratch Recycling - Dale Lanedalelane.co.uk › drpbx › codeclubprojects › en-GB ›...

Documents

Transcript of Scratch Recycling - Dale Lanedalelane.co.uk › drpbx › codeclubprojects › en-GB ›...