Menu
CoddyTech
Start learning

Flap the Flyer

Part of the Projects section of Coddy's Godot journey. Lesson 23 of 36.

Space makes the flyer flap. A flap sets the speed to a fixed upward value, so every flap feels the same.

if Input.is_action_just_pressed("jump"):
	velocity.y = FLAP

With FLAP at -300, the flyer goes up, slows down as gravity adds to its speed, then falls.

Use is_action_just_pressed, so one press is one flap. Put the flap between the gravity line and the move line. Then the move uses the new speed in the same frame.

challenge icon

Challenge

Medium

Make the flyer flap.

  1. Add const FLAP = -300.
  2. When jump is just pressed, set velocity.y to FLAP.

Press Play and tap Space: the flyer hops up, then falls. Then Check.

Try it yourself

extends CharacterBody2D

const GRAVITY = 900

func _physics_process(delta):
	velocity.y += GRAVITY * delta
	position += velocity * delta

All lessons in Projects

1Project: Breakout

Breakout PaddleKeep the Paddle on ScreenProject lessonBreakout BallProject lessonBounce Off the PaddleProject lessonA Wall of BricksProject lessonBreak the BricksProject lessonBreakout ScoreProject lessonBreakout LivesProject lessonBreakout Game OverProject lessonClear the WallProject lesson

4Project: Dungeon Crawler

Walk the DungeonPick Up the KeyProject lessonThe Locked DoorProject lessonA Patrolling GuardProject lessonThree HeartsProject lessonHero FlashProject lessonOut of HeartsProject lessonEscape the DungeonProject lesson

2Project: Asteroid Shooter

Turn the ShipFire the EngineProject lessonFly Off the EdgeProject lessonFire BulletsProject lessonSpawn the RocksProject lessonDrifting RocksProject lessonShoot the RocksProject lessonSplit the RocksProject lessonBig and Small RocksProject lessonScore and VictoryProject lessonCrash and RestartProject lesson

3Project: Flappy Flyer

Flyer GravityFlap the FlyerProject lessonPipes on a TimerProject lessonRandom GapsProject lessonCrash Into PipesProject lessonScore a PipeProject lessonTen Pipes to WinProject lesson

Practice on your own: Godot playground