Star Logo TNG Treasure Hunt Game Unit Lesson
- Slides: 19
Star. Logo. TNG Treasure Hunt Game Unit Lesson 1: Basic Movement
Today’s Agenda • • Starlogo TNG basics Mini-lesson on programming movement First programming challenge Wrap-up
What’s What in SLTNG • Programming Window • Spaceland – Palette of “blocks” – Canvas • Runtime Window
Definition of “Agent” • Like a character or object in a game • Can be programmed to have behaviors • Can have more than 1
First Programming “Blocks” • Give an agent behavior instructions by dragging blocks from the palette onto the canvas • Many blocks take arguments • An agents “executes” an instruction when the agent does what the instruction says Arguments
Your First Program • File menu > Open project “first program. sltng” • File menu > Save next version • In runtime window, click once on “set up” and then “run” to start the program. The program will end after 60 seconds. Repeat to run the program again. • Practice: run the game a few times, move around in spaceland try different camera angles using the Guide to Spaceland activity sheets.
About First Program • What did you notice about how first program works? – How did the score change? What do you think the score is based on? – How did the turtle agents behave? What happened when they reached the edge of Spaceland?
How Score is Calculated • The score is the running added total of the height of each patch that a turtle is standing on. • Green patches = 0 (no effect on score) • Blue patches = negative (varies) • Red patches = positive (fixed) • Yellow patches = positive (varies)
Programming Activity • Get the highest score possible by programming additional movement instructions when the turtles detect that they’re on a particular color patch
Movement Blocks Found in Movement drawer: • Forward steps • Back steps • Left degrees • Right degrees Dragged onto canvas
Quick geometry review! • How many degrees are there in a circle? • Degrees for turning left or right are relative to the direction the turtle is currently facing – for example, the labels in the diagram on the right shows the degrees for turning right. • What should be the degree labels if we’re turning left? 0 degrees 45 degrees 270 degrees 90 degrees 180 degrees
About First Program Setup: Create and scatter 20 turtles Time=60 sec? Yes No Run: All turtles move 1 step forward Run: Your instructions Run: Calculate score End
Programming Activity 1 • Get the highest score possible by programming additional movement instructions when the turtles detect that they’re on a particular color patch • For example, how should the turtle behave if it detects that it’s standing on a blue patch?
Programming Activity • Try out different commands and sequences; see what happens to the score each time. There are many ways to achieve a high score. Try to use as few blocks as possible.
One more thing… • Every time you want to test out your program, click setup once (turtles created and scattered) and then run once (wait for green highlight around the run block). • Use the blue slider bar to speed up or slow down the program.
Programming Tip To delete a block, drag it to the trash can in the corner of the canvas
Programming Tip Save often. Save now.
Wrap Up • • • What What strategies did you try? worked? What didn’t work? challenges did you have? was fun? questions do you have?
To get Star. Logo TNG for your home computer Website: http: //education. mit. edu/starlogo-tng/download Register, download, install
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