cn-sensei-guides/01-white/02-03-PY-under-the-stars.js

/**
Ninjas will use their knowledge of the GDP, GDP objects, and the spin function to 
create their own scene.

New Vocabulary and Concepts
* GDP Asset Library
* Negative Numbers

Reinforced Vocabulary and Concepts
* Functions and Parameters
* GDP Objects and Properties
* GDP spin() function
* Object Names and Renaming

Sensei Notes
* The Ninja needs to demonstrate mastery of the GDP by creating a scene from 
scratch.
* There are a lot of Ninja characters, backgrounds, and other images in the GDP 
Assets that can be accessed by clicking on the magnifying glass on the bottom 
white bar.
* The Ninja should compose a scene to the best of their ability.
* Encourage them to experiment with changing shape properties.
* Stress the importance of knowing the name of each object. Step 3 shows how to 
rename an object.

Solution Steps
1 Make sure the Ninja opens the correct scene.
2 Encourage the Ninja to be creative within the bounds of the activity. 
The end goal is to use the spin function on their own game objects. Changing the 
offset of an object will drastically change how the object responds to the spin 
function. By using an offset, you can simulate shooting stars. Encourage them 
create complex items out of the simple shapes. For example, a telescope can be 
made from rectangles for the legs, an ellipse for the body, and a circle for the 
lens.
3 The GDP gives generic names with numbers to all new objects. Help the Ninja 
pick appropriate names.
4 Make sure the Ninja is coding in the scene's Update Every Frame event. If they 
coded somewhere else, help them copy and paste the code into the correct location. 
Because they will be adding to the scene, it is easy to lose track of what object 
is selected. Point out that the name of the selected object is always directly
under the Events tab. If the Ninjas have a hard time understanding a negative 
number, help them write the code and then ask them what changed.
5 Before the Ninjas submit their scene, verify that they have used the spin 
function properly on at least two objects. Ask them what a negative number does 
to the spin direction of an object.
*/

/**All Ninja scripts for this activity should be unique. At minimum, there should 
be two spin functions. One function should have a positive spin rate and the 
other should have a negative spin rate.
**/

spin(firstObject, 48);
spin(secondObject,-330);

/**
Sensei Stops
5 Tell a Sensei how you created your scene. Did you use any GDP assets? How did 
you change the properties?
Explain how you used the spin function.
This is the last activity before new computer science concepts and GDP functions 
are introduced. Ensure that the Ninja can explain in their own words what they 
have learned up to this point.
 */