Fall With Gravity

Part of the Input and Movement section of Coddy's Godot journey. Lesson 12 of 28.

This game is seen from the side, and the hero starts in the air. Gravity makes it fall faster and faster, because it adds to the falling speed every frame.

Down is more y, so gravity adds to velocity.y:

var gravity = 1000

func _physics_process(delta):
	velocity.y += gravity * delta
	move_and_slide()

gravity is how much the falling speed grows in one second. One frame gets gravity * delta of it. velocity itself still never gets delta.

When the hero lands on the floor, move_and_slide() stops it and sets velocity.y to 0.

Challenge

Easy

Make the hero fall with gravity. Add gravity * delta to velocity.y every physics frame, before move_and_slide(). It should fall faster and faster and land on the floor.

Try it yourself

extends CharacterBody2D

var gravity = 1000

func _physics_process(delta):
	move_and_slide()

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Input and Movement

1Input Actions

Press to Move Left and Right One Axis Four Directions Just Pressed Unhandled Input

4Smooth Movement

Speed Up Slowly Friction Face the Way You Move Clamp to the Screen Clamp Both Axes

2CharacterBody2D

CharacterBody2D Walk With Velocity Walls Stop You Walk Everywhere Fair Diagonals

5Project: Platformer Hero

Hero: Run Hero: Jump

Hero: Smooth Run

Hero: Face the Way

Hero: Back to the Start

Hero: Reach the Ledge

3Gravity and Jumping

Fall With GravityJump Up Only From the Floor Run and Jump Variable Jump Double Jump

Practice on your own: Godot playground