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CNIT155Lab02-SpriteCommunication - Lab 02 Multiple Sprites...

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Lab 02: Multiple Sprites in Scratch CNIT 15500 bring headphones to lab Fall 2011 Prof. Harriger Due: Monday, 9/12/11, 10 pm 15 Points Description You are going to continue using Scratch to create more advanced animations. We will use the features covered in the first and third sets of video lessons found on http://learnscratch.org . These lessons include more detailed explanations of some things we covered in last week’s lab as well as new features that we didn’t cover. You should complete these video lessons to gain a firmer grounding of the topics below: UNIT 1: Motion & Looks Palettes Move, turn and point Go and glide, changing positions Bouncing, locating the sprite Changing costumes Speaking, thinking and graphic effects Size, presence and layers UNIT 3: Control Palette Beginning and waiting Repeating actions Broadcasting Conditional actions Stopping In-Lab Activity You will create an animation where the cat will throw a ball into a pond. While the action is taking place, you’ll see the clouds moving in the background. The cat will send a play ball message and a throw ball message. When the ball receives the play ball message, it will be positioned in the cat’s arm. When it receives the throw ball message, it will fly through the sky in an arc. The ball will land in the pond, causing it to send a splash message, change its coloring, and disappear. When the cat receives the splash message, it realizes disappointingly that the game is over. When the pond receives the splash message, it sounds the water rippling effect and switches to the splash costume.
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