GlitterIDE

Beginners Tutorial 1

This is a first in a series of tutorials for the beginner coder to learn the basics of programming and Glitter IDE.

Concepts

• Basic GlitterIDE usage
• Basic script Editor usage
• Simple commands for moving sprite
• The concept of a block (defined with "{ }" curly brackets)
• Event blocks, flag block used
• Repeat count control structure
• Compiling and running a project (ctrl-F9)
• Single line comments

Related Video

(Audio is a bit quiet as my microphone was the wrong way around)

Downloads

• Tutorial GlitterIDE project (.gtr)
• Related Example Scratch project (.sb3)

Commands Introduced

• turnLeft(x) Turn the sprite left "x" degrees
• turnRight(x) Turn the sprite right "x" degrees
• move(x) Move the sprite forward "x" steps (pixels)
• penDown() Make the sprite leave a trail when it moves

Control Structures Introduced

• { } Curly brackets define a "block" of code, which the computer sees as being connected
• repeat (x) { } Repeat a block of code "x" times

Event Structures Introduced

• flag { } The code block attached to a flag block is performed every time the green flag is clicked

Related Code

	// Comments
	flag {
		penDown()
		repeat(36) {
			repeat(4) {
				turnRight(90)
				move(100)
			}	
			turnLeft(10);
		}
	}	
	

Next parts

Part 2

function(argument) values, and variables are discussed.

• Introduced functions: print(), sin(), goXY(), moveTo()
• System variables: mouseX, mouseY, spriteX, spriteY
• Control structures: forever { }
• Others: declaring, reading, assigning to variables,
• Variable types: string, int(egers), floats/doubles
• Keywords: let,var,forever

Part 3

while and repeat until loops, if and if/else statements, conditional expressions (don't know how to type in youtube description!), += statements, and the randomInt() function

• Introduced functions: randomInt()
• Control structures: while() {}, repeat until() { }, if() { }, if() { } else {}
• Others: increasing/decreasing variables
• Variable types: booleans (implicitly)
• Keywords: while, repeat, until, if, else

Part 4

creating "blocks" (functions) to allow code to be reused, and how to use blocks to run things quickly

• Keywords: block, block!