README.md

Godot Mechanics Lab

All examples in this repo runs in Godot v3.5.3.

Description

This project contains a series of experiments, scripts and studies I've made in Godot through all this years.

Every DemoScene implements one mechanic I've created, or a mechanic existing in another game that I tried to replicate.

I hope you can use my scripts as an example or as a base for your studies in this amazing engine 😃

Enjoy! 👾

Demo scenes

001 - Parallax Background

• No scripts required, you can make parallax effects in Godot only using the ParallaxBackground and ParallaxLayer nodes

002 - Look at Mouse Position

• It's simple to make a Node always "look" at the mouse position, just use the look_at() function

func _process(delta):
    look_at(get_global_mouse_position())

003 - Create Tilesets

• To create a tileset, create your Nodes in a separate scene, and convert the whole scene in menu Scene -> Convert To -> TileSet

004 - Using Tilesets

• To use a tilemap to create your levels, add a Tilemap Node in your scene, and load the tileset created in last step

005 - Basic Player

• This is the most simple and basic 2D platform player you can have. He can walk, he can jump, and have Idle, walking, and jumping animations. You can check the code here

006 - Slow Motion Effect

• In this example, I tried to simulate a slow motion effect, just changing gradativally the time_scale value of the engine. You can check the code here

007 - Arcade Car 3D

• This example implements a 3D arcade race car mechanic. This technique uses a sphere to run all the physics, and visually replace the sphere for the car 3D model
• This technique I've learned from this amazing tutorial

008 - Advanced Player

• In this new character script, gravity is not a fixed value randomly chosen by you. Instead, you set the blocks UNIT_SIZE of your tilemap, and all values will be calculated according to your blocks
• This way, it's easier to control how high (in blocks) and how much distance (in blocks) your character can reach in a jump
• Holding the "jump" button will make your character jump higher
• This player also had a Tween node to make some cool animations when you're jumping and when you're landing. You can configure how much the character will "deform" changing the "squash" value.
• And here's the code

009 - Boomerang

• A simple and smooth boomerang
• Go towards mouse click coordinates
• Always return to the player
• Code here

Tips and tricks

• To get the direction (Vector2) between 2 positions (Vector2)

var direction = (target - start_position).normalized()

• To move your object towards this direction

position += direction.rotated(rotation) * speed * delta

• To calc the distance between 2 positions

var distance_to_target = position.distance_to(target)

010 - The Messenger Jump

• In this demo, I tried to reproduce the "3 steps jump animation" used in The Messenger
• This jump uses 3 animations, one when the character is upping, one when he's on top, and another when he's falling.
• I made this script to obtain this result

func animate():
    if !is_on_floor():
        if abs(motion.y) > JUMP / 2:
            if motion.y < 0:
                animator.play("Jump_up")
            else:
                animator.play("Jump_down")
        else:
            animator.play("Jump_roll")

011 - Rolling Ball

• With this simple script you can control a rolling ball through a 2D scenario
• You can roll to the left, right, and you can jump

012 - Full screen Shader

• This is a simple example of a shader covering the whole screen
• How I make:
  • Add a TextureRect node
  • Add a simple white image as a texture to your TextureRect node
  • Check the expand option
  • Adjust the rect size to fill your whole window (you can check your window size in Project → Project settings → Window)
  • In Material section, add a ShaderMaterial
  • Load your shader
• For this example, I used this screen glitch shader
• You can find some amazing shaders ready to use in your game in Godot Shaders website, or in Shadertoy (but shaders from Shadertoy need to be converted)

013 - Olija Spear

• In this example, I tried to reproduce the Olija spear effect
• You can throw your spear in any direction using the Mouse Left
• The spear sticks to any physic body it hits
• If you press R, you pick you spear back
• If you press Mouse Right, your character teleports to spear position
• You can check how I made this effect here

014 - Raycast Weapon

• A 2D raycast weapon, with some nice bullet trail, animation hit, and cartridge ejection effects
• Shoots in mouse direction
• Automatic and semi automatic modes
• Emit signals when it shoot, reload, hit, etc
• Shoot, reload, and empty bullets sounds
• Adjustable damage, spread rate, recoil time, bullets and reload time
• Script here

Assets

• Kenney
• The Spriters Resource
• Sound Bible
• Screen Glitch Shader