Godot Math Library

Some useful math and collision tools for various functions in Godot 4.2+ - I cannot guarantee every function will be available in prior versions though most should be.

Note: this is pretty outdated; a primary reason for this library was to solve some issues with move and slide. From the current GDscript perspective this isn't really doable yet.

Also included is an in-progress 3D character motion controller with stair stepping and ramp sliding. It's not complete, but works fairly well, and you might get an idea of how to go forward with your own. It's heavily based off of btan2's Q_Move code. See below. You should use Jolt Physics with this character

If you're looking for a more game-ready character controller, I'd really recommend looking here: https://github.com/ratmarrow/GoldGdt/tree/main

License

GNU GPL v3

You do not need to credit me, but you should credit Btan2 if you use the custom collision code per their request. See the original repositiory: https://github.com/Btan2/Q_Move/tree/main

Usage

Put math.gd somewhere in your project. Usually this goes where your other autoload or singletons go, like src/global.

Then, you can simply access functions with Math.Lib anywhere.

Examples:

func _ready() -> void:
	var flag_a := 1 << 0
	var flag_b := 1 << 2

	var flag_test: int = 0

	var flags: Array[int] = [flag_a, flag_b]

	prints("Flags now:", flag_test)
	prints("Get flags", Math.Lib.get_flags(flag_test, flags.size()))
	prints("Has flag A", Math.Lib.has_flag(flag_test, flag_a))
	prints("Has flag B", Math.Lib.has_flag(flag_test, flag_b))
	prints("Has each flag A, B:", Math.Lib.has_all_flags(flag_test, flag_a + flag_b))
	flag_test = Math.Lib.set_flag(flag_test, flag_a)

	prints("Flags now:", flag_test)
	prints("Get flags", Math.Lib.get_flags(flag_test, flags.size()))
	prints("Has flag A", Math.Lib.has_flag(flag_test, flag_a))
	prints("Has flag B", Math.Lib.has_flag(flag_test, flag_b))
	prints("Has each flag A, B:", Math.Lib.has_all_flags(flag_test, flag_a + flag_b))

	flag_test = Math.Lib.set_flag(flag_test, flag_b)
	prints("Flags now:", flag_test)
	prints("Get flags", Math.Lib.get_flags(flag_test, flags.size()))
	prints("Has flag A", Math.Lib.has_flag(flag_test, flag_a))
	prints("Has flag B", Math.Lib.has_flag(flag_test, flag_b))
	prints("Has each flag A, B:", Math.Lib.has_all_flags(flag_test, flag_a + flag_b))

	flag_test = Math.Lib.clear_flag(flag_test, flag_a)
	prints("Flags now:", flag_test)
	prints("Get flags", Math.Lib.get_flags(flag_test, flags.size()))
	prints("Has flag A", Math.Lib.has_flag(flag_test, flag_a))
	prints("Has flag B", Math.Lib.has_flag(flag_test, flag_b))
	prints("Has each flag A, B:", Math.Lib.has_all_flags(flag_test, flag_a + flag_b))

	flag_test = Math.Lib.toggle_flag(flag_test, flag_b)
	prints("Flags now:", flag_test)
	prints("Get flags", Math.Lib.get_flags(flag_test, flags.size()))
	prints("Has flag A", Math.Lib.has_flag(flag_test, flag_a))
	prints("Has flag B", Math.Lib.has_flag(flag_test, flag_b))
	prints("Has each flag A, B:", Math.Lib.has_all_flags(flag_test, flag_a + flag_b))


# outputs:
# Flags now: 0
# Get flags [false, false]
# Has flag A false
# Has flag B false
# Has each flag A, B: false
# Flags now: 1
# Get flags [true, false]
# Has flag A true
# Has flag B false
# Has each flag A, B: false
# Flags now: 5
# Get flags [true, false]
# Has flag A true
# Has flag B true
# Has each flag A, B: true
# Flags now: 4
# Get flags [false, false]
# Has flag A false
# Has flag B true
# Has each flag A, B: false
# Flags now: 0
# Get flags [false, false]
# Has flag A false
# Has flag B false
# Has each flag A, B: false

Some other misc. functions are included as well, documentation coming at some point