Adventures in Animation Harry Potter Game Pranali Choubal Kunal Shaw Barb Ericson Dec 2007

Adventures in Animation The Game Use the arrow keys to move Harry Potter –to catch the golden snitch –to avoid the bludger

Adventures in Animation Getting Started Start Scratch Delete the cat –Click on scissors and then the cat –or right click on the cat and pick delete

Adventures in Animation Change the Background Click on the stage to select it Click on the Backgrounds tab Click on the import button

Adventures in Animation Select New Background Navigate to HarryPotter folder Select the Stadium and click OK

Adventures in Animation The Stage is Set

Adventures in Animation Add Harry Potter Click on the folder with a star on it to add a sprite from a file Navigate to the HarryPotter folder Add Harry.sprite

Adventures in Animation The Game so Far

Adventures in Animation Making Harry Move Click on the Scripts Tab Click on Control and drag out –When space key pressed –Change to left arrow key Click on Looks and drag out –switch to costume –Change to Harry_Left Click on Motion and drag out –change x by 1 –click on 1 and change to -4

Adventures in Animation Add Other Key Scripts Right arrow –change to Harry_Right costume –change x by 4 Down arrow –change y by -4 Up arrow –change y by 4

Adventures in Animation Add the Golden Snitch Click on the folder with a star on it to add a sprite from a file Navigate to the HarryPotter folder Add snitch.sprite

Adventures in Animation Harry and the Snitch

Adventures in Animation Snitch Behavior In a 'normal' Quidditch game the game is over when the snitch is caught But, in this game you will have to catch 10 snitches to win. –you will need to keep track of the number caught Each time the snitch is caught it will hide and reappear in a new random location

Adventures in Animation Variables To remember how many snitches were caught we will need a variable –the value stored in a variable can change (vary) Click on the Variables button Then click on Make a Variable Enter a name for the variable

Adventures in Animation Starting Scratch games and animations usually start when you click the green flag Click on Stage Click on Scripts Click on Control Drag the "when green flag clicked" tile out Click on Variables –drag the "set Snitches Caught to 0"

Adventures in Animation Messages Scripts can wait for messages and broadcast messages –tiles are in the Control area Click on the snitch sprite, then Scripts then Control To create a message drag out the "when I receive" and click on the down arrow –then on new… Give the message a name –click on OK

Adventures in Animation Responding to Caught Hide the snitch –drag hide from Looks Add one to the number of snitches caught –drag from Variables Change the x and y values –drag from motion –replace values with random numbers from Number Show the snitch –drag from Looks Play a sound –drag from Sound

Adventures in Animation Catching the Snitch If the Harry Potter sprite is touching the snitch sprite –add if Control –add "touching …" and change to "Sprite3" from Sensing Broadcast the Caught message from Control Right click on if part and pick "duplicate" –and add to all the other scripts for Harry Potter

Adventures in Animation Winning the Game In the snitch script that receives the caught message –drag in a if and else from Control –move the last 3 tiles into the else part –drag in a "blank = blank" from Number –drag in "Snitches Caught" from Variables –click on second blank and type in 10 –drag in a broadcast tile Create new message "Won"

Adventures in Animation Telling the User Click on Stage Click on Backgrounds Click on Import Navigate to HarryPotter folder Select Congrats –click on OK

Adventures in Animation Stage Scripts Click on Stage and Scripts Set the initial background to the stadium –when the green flag is clicked from Looks When receive Won message –from Control –switch background to Congrats from Looks

Adventures in Animation Hide Other Sprites If the user has won –hide the other sprites Harry Potter Snitch –You can click on the "when I receive Won" and drag it to the other sprite to copy it

Adventures in Animation When Game Starts If the user wins and Harry and the Snitch hide when you restart the game –they won't show again Add "when green flag clicked" show to: –Harry –Golden Snitch

Adventures in Animation Making it Harder add a Bludger if the Bludger hits Harry he "dies" –start with 3 lives –lose a life each time Harry dies if Harry loses all 3 lives you lose the game

Adventures in Animation Add Lives Variable Click on Variables Click on Make a variable Enter Lives Drag display to top right

Adventures in Animation Start with 3 Lives Click on Stage Click on Scripts Add "set Lives to 0" Click on 0 and change to 3

Adventures in Animation Painting a Bludger You can paint a new sprite –click on the paintbrush with a star on it Click the color Click the circle shape tool Click and drag to make the circle Click on OK

Adventures in Animation Bludger Scripts When the green flag is clicked loop forever –set x –hide –wait for some random amount of time –show –Glide to opposite side random y Also loop forever –check if touching Harry play sound change number of lives check if lost wait till not touching Harry

Adventures in Animation Tell User Game Over Click on Stage Click on Backgrounds Click on Import Select HarryPotter folder Select Game Over Click OK

Adventures in Animation New Stage Script Click on Scripts Add "when I receive Lost" –from Control Add "switch background Game Over" –from Looks Add "stop all" –from Control

Adventures in Animation Hide Sprites When Lose When the game is lost –hide Harry –hide the Snitch

Adventures in Animation Project Notes Click on the notepad in the top right corner Type in project notes You can upload your project to the Scratch web site –Click on Share! –See it at

Adventures in Animation Extensions Speed up the Bludger each time after 5 snitches have been caught –Will need a variable "Time to Cross" Add background music –Import Theme.wav