The Draw Loop

Prior to the lesson on the draw loop, all the instructions we have programmed were executed in what order?

• Sequential order (from top to bottom).

• Random order

• Order determined by the computer to be most efficient

• First it executes the drawing commands, then it executes the sprite commands, and lastly, it executes the text commands.

What is a flipbook?

• A book with drawings on each page that look like movement when you flip through the pages.

• A gymnastic move that inspired people at code.org

• When you flip the order that the computer executes instructions.

• A way to measure frames per second (fps)

How is an animation created?

• Draw a series of images that are similar but have changes. then show each image in turn.

• Use a video camera to create a movie.

• Program the computer to record a movie.

• Animations are not related to computers.

What is the purpose of the draw function in Game Lab?

• To reset the program

• To generate random numbers

• To create real animations

• To draw a single rectangle

What does the fill command do inside the draw loop?

• Reset the program

• Choose a new color

• Draw a new shape

• Generate random numbers

What is the effect of the draw loop in the program?

• Repeats the commands in a loop

• Draws a single shape

• Generates random numbers

• Resets the program

What commands are executed first?

• Commands outside of the draw loop

• Commands inside the draw loop

• Commands not related to the draw loop

• Commands from the Draw toolkit

How many times will a command inside a draw loop be executed?

• Infinite times or until the program is terminated

• Each command is executed twice

• Repeatedly until the loop runs out of energy

• Commands are repeated up to 1000 times

What will the following code do?

• Draw green circles in random places all over the screen until the screen is covered in circles

• Draw one green circle in the center of the screen

• Draw an ellipse in the bottom corner

• Nothing, there is an error

What will the following code do?

• Draw one circle on a red background. The circle will move around the screen randomly

• Draw circles all over the screen until the screen is covered in circles

• Draw a circle in the bottom corner

• Nothing, there is an error