Programming Intro

This lab covers making Global and PlayerContollerSimple scripts, while covering programming basics.

1. Adding scripts to Godot

Download the Assets folder
Create a new Godot Project or use the Default Project Template
Add folders for Scripts, Scenes, Sprites and TileSets

2. Create the Global.gd script

Go to the Script view
Create a new Script called Global.gd
Add Global.gd to Project Settings > AutoLoad

3. Add player and scenery to the default scene

Use the Scene from the Godot Intro or create a new one
Open DefaultScene and add the Player and Camera
Add some scenery for the player to walk around in

4. Add movement to Player

Create a new script called PlayerController.gd
Add variables for movement
Update movement
Update animations to follow movement

5. Add one of the following to the script

Add new animations for up and down movement
Extra challenge: Add two players with different controls for local two player setup

6. Documentation

Add screen shots or video on Open Lab

Resources

Godot API

Full Global.gd script

extends Node

# comments
# anything after # is ignored by godot
# use it to make notes for yourself, other developers

# Global saves values that are tracked throughout all game scenes

var total_lives = 3 # how many lives player starts with
var player_lives = 3 # use this to keep track of player lives
var item_count = 0 # count generic items, can add more, use specific names like apple_count

Full PlayerControllerSimple.gd script

extends KinematicBody2D

# controls player movement

# physics settings 
export var speed = 100

# member vars
var is_alive = true
var velocity = Vector2()

func _physics_process(delta):
	if is_alive:
		player_update(delta)
	
func player_update(delta):
	# assume player not moving
	velocity.x = 0
	velocity.y = 0
	
	if Input.is_action_pressed("move_right"):
		# += is short hand for  x = x + speed
		velocity.x += speed 

	if Input.is_action_pressed("move_left"):
		velocity.x -= speed

	if Input.is_action_pressed("move_up"):
		velocity.y -= speed

	if Input.is_action_pressed("move_down"):
		velocity.y += speed
	
	velocity = move_and_slide(velocity, Vector2.UP)
		
	# set animation
	if velocity.length_squared() > 1:
		$AnimatedSprite.play("Walk")
	else:
		$AnimatedSprite.play("Idle")

	if velocity.x > 1:
		$AnimatedSprite.flip_h = false
	
	if velocity.x < -1:
		$AnimatedSprite.flip_h = true