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TestyourProject

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IntroductionYouaregoingtolearnhowtoprogramyourownanimation!

FollowtheseINSTRUCTIONSonebyone

ClickonthegreenflagtoTESTyourcode

MakesuretoSAVEyourworknow

LostinSpaceScratch

1

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Step1:Animatingaspaceship

Let’smakeaspaceshipthatfliestowardstheEarth!

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StartanewScratchproject,anddeletethecatspritesothat

yourprojectisempty.YoucanfindtheonlineScratcheditor

atjumpto.cc/scratch-new.

Add‘Spaceship’and‘Earth’spritestoyourstage.Youshould

alsoaddthe‘Stars’backdroptoyourstage.Thisishowyour

stageshouldlook:

Clickonyournewspaceshipsprite,andclickthe‘Costumes’

tab.

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Usethearrowtooltoselecttheimage.Thenclickonthe

circularrotatehandle,androtatetheimageuntilitisonits

side.

Addthiscodetoyourspaceshipsprite:

Changethenumbersinthecodeblocks,sothatthecodeis

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exactlythesameasintheimageabove.

Ifyouclickonthecodeblockstorunthecode,youshouldsee

thespaceshipspeak,turnandmovetowardsthecentreofthe

stage.

Thescreenposition x:(0)y:(0) isthecenterofthestage.A

positionlike x:(-150)y:(-150) istowardsthebottom-leftof

thestage,andapositionlike x:(150)y:(150) isnearthetop-

right.

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Ifyouneedtoknowthecoordinatesofapositiononthestage,

movethemousetothepositionyouwantandmakeanoteof

thecoordinates,whicharedisplayedbelowthestage.

Tryoutyouranimation,byclickingonthegreenflagjustabove

thestage.

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Challenge:Improvingyouranimation

Canyouchangethenumbersinyouranimationcode,sothat:

You’llneedtochangethenumbersinthisblock:

ThespaceshipmovesuntilittouchestheEarth?

ThespaceshipmovesmoreslowlytowardstheEarth?

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Step2:Animatingusingloops

Anotherwayofanimatingthespaceshipistotellittomoveasmallamount,

lotsoftimes.

ActivityChecklist

Deletethe glide blockfromyourcode,byright-clickingon

theblockandclicking‘delete’.Youcanalsodeletecodeby

draggingitoffthescriptarea,backintothecodeblocksarea.

Onceyou’veremovedyourcode,addthiscodeinstead:

The repeat blockisusedtorepeatsomethinglotsoftimes,

andisalsoknownasaloop.

Ifyouclicktheflagtotryoutthisnewcode,you’llseethatit

doesprettymuchthesamethingasbefore.

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Youcanaddmorecodetoyourloop,todointerestingthings.

Addthe changecoloreffectby25 blockintotheloop(from

the‘Looks’section),torepeatedlychangethecolourofthe

spaceshipasitmoves:

Clicktheflagtoseeyournewanimation.

Youcanalsomakeyourspaceshipgetsmallerasitmoves

towardstheEarth.

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Testoutyouranimation.Whathappensifyouclicktheflaga

secondtime?Doesyourspaceshipstartofftherightsize?

Canyouusethisblocktofixyouranimation:

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Step3:FloatingMonkey

Let’saddmonkeytoyouranimation,who’slostinspace!

ActivityChecklist

Startbyaddinginthemonkeyspritefromthelibrary.

Ifyouclickonyournewmonkeyspriteandthenclick

‘Costumes’,youcanedithowthemonkeylooks.Clickthe

‘Ellipse’tool,anddrawawhitespacehelmetaroundthe

monkey’shead.

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Nowclick‘Scripts’,andaddthiscodetothemonkey,sothatit

spinsslowlyinacircleforever:

The forever blockisanotherloop,butthistimeonethat

neverends.

Clicktheflagtotestyourmonkey.You’llhavetoclickthestop

button(nexttotheflag)toendthisanimation.

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Step4:BouncingAsteroids

Let’saddsomefloatingspace-rocktoyouranimation.

ActivityChecklist

Adda‘rock’spritetoyouranimation.

Addthiscodetoyourrock,tomakeitbouncearoundthe

stage:

Clicktheflagtotestyourrock.Doesitbouncearoundthe

stage?

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Step5:ShiningStars

Let’scombineloopstomakeashiningstar.

ActivityChecklist

Adda‘star’spritetoyouranimation

Addthiscodetoyourstar:

Clicktheflagtotestoutthisstaranimation.Whatdoesthis

codedo?Well,thestarismadeslightlybigger20times,and

thenmadeslightlysmaller20times,backtoit’soriginalsize.

These2loopsareinsidea forever loop,sotheanimation

keepsrepeating.

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Challenge:Makeyourownanimation

Stopyourspaceanimation,andclick‘File’andthen‘New’,to

startanewproject.

Usewhatyou’velearntinthisprojecttomakeyourown

animation.Itcanbeanythingyoulike,buttrytomakeyour

animationmatchthesetting.Herearesomeexamples:

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