Yan is a simple instance/UI library for Love2D

• Position and scale UI elements relative to the window size
• UI elements can be parented to other UI elements to make their positioning relative to the parent
• Add instances to scenes, which can be enabled and disabled
• Theming system to easily add colors and hovering/click effects to several different UI elements.
• Tweening system to add smooth animations to UI elements and instances.
• Several UI elements, including text labels, buttons, images, lists, grids, scrollables, and text input fields

Download the yan folder and put it into your Love2D project. Instances can be created by requiring their script, for example:

local instance = require("yan.instance.instance")
local label = require("yan.instance.ui.label")

Create a new instance by calling the New function on any instance, for example:

local player = physicsInstance:New(world, "dynamic", "rectangle", {X = 50, Y = 50}, 0, 1)

For UI elements, you must first create a screen, which is an instance that holds UI elements.

local UIVector2 = require("yan.datatypes.uivector2")
local Vector2 = require("yan.datatype.vector2")
local Color = require("yan.datatype.color")
myScreen = screen:New()
myScreen.Enabled = true
    
text = label:New(myScreen, "Hello world!", 32, "center")
text.Position = UIVector2.new(0.5, 0, 0.5, 0)
text.Size = UIVector2.new(1, 0, 0.5, 0)
text.AnchorPoint = Vector2.new(0.5, 0.5)
text.Color = Color.new(0,1,0,1)
text.ZIndex = 1

To draw instances, call the Draw function on them in love.draw. For UI elements, call Draw on the UIManager module, which will draw all UI elements across all screens at once. With the UIManager module, you'll also need to call some other functions for certain UI elements to function.

local uiManager = require("yan.uimanager")

function love.keypressed(key, scancode, rep)
    uiManager:KeyPressed(key, scancode, rep)
end

function love.textinput(t)
    uiManager:TextInput(t)
end

function love.wheelmoved(x, y)
    uiManager:WheelMoved(x, y)
end

To add instances to a scene, create a new scene with SceneManager:NewScene(), then add the instances to the scene with SceneManager:AddToScene(), for example:

local SceneManager = require("yan.scenemanager")
SceneManager:NewScene("User interface")
SceneManager:AddToScene("User interface", {myScreen})

Scenes can be enabled or disabled with SceneManager:SetSceneEnabled("User interface", true) and SceneManager:SetSceneEnabled("User interface", false)