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Enhancing Game Logic: Sensing Events and Keeping Score

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This guide aims to teach you how to sense events in games and maintain the score through variables. You will learn how to detect events, such as whether a shark is touching a fish, and how to utilize variables to store and retrieve player data like names and scores. The example game Shark Attack will be developed, allowing players to control a shark and score points by eating fish. Additionally, extensions will help enhance gameplay features, such as changing the shark's costume and implementing a game over stage.

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Enhancing Game Logic: Sensing Events and Keeping Score

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  1. Sensing and Variables

  2. Learning Objective • “Learn how to sense events and keep score”. • Write this Learning Objective onto Page 1 of your workbook. Friday, 20 February 2009

  3. Sensing • Sensing can be used to detect when something has happened in a game. Like touch in this example: Is shark touching fish? No Yes Add to score. Learn how to sense events and keep score.

  4. Variables • Variables are used to store data. • In order for a game to “remember” what a players score is it must store it in a variable. Think of variables as boxes to store data which can be retrieved later. PLAYER NAMES LIFE SCORE Learn how to sense events and keep score

  5. The Game • Use the instructions on page 10 of your workbooks to create this Shark Attack game: Score shown here. Shark will move up and down using  cursor keys. Fish will start in a different place each time. Learn how to sense events and keep score

  6. Extension Task • Make your game better by adding some more features: • Change the sharks costume so it closes it’s mouth to eat the fish. • Add a GAME OVER stage to be displayed if the fish doesn’t get eaten. Learn how to sense events and keep score

  7. Learning Objective • “Learn how to sense events and keep score”. • Put  or  onto your Self Assessment page to show whether or not you have achieved today’s learning objective. Friday, 20 February 2009

  8. What can you remember? • What do X and Y mean when talking about the position of a sprite? • What is a variable used for? • What does broadcast mean? Learn how to sense events and keep score

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