Lua-Inverse-Kinematics

A simple Inverse Kinematics library for LÖVE

Requirements

• LÖVE
• vector.lua

Installation

Put the IK.lua file in your project folder and require it. You also need to put the vector.lua file in your project folder and require it.

local IK = require 'IK'

Example

local IK = require 'IK'

local ik

function love.load()
    ik = IK()

    for i = 1, 20 do
        ik:addSegment(20)
    end

    ik:setFixedPoint(love.graphics.getWidth() / 2, love.graphics.getHeight())
    ik:setTarget(love.mouse.getPosition())
    ik.debug = true
end

function love.update(dt)
    ik:setTarget(love.mouse.getPosition())
    ik:update()
end

function love.draw()
    ik:draw()
end

Documentation

IK()

Creates a new IK object.

IK.debug

A boolean value that determines whether the IK object is drawn or not.

IK:addSegment(length)

Adds a segment to the IK object.

IK:setFixedPoint(x, y)

Sets the fixed point of the IK object.

IK:setTarget(x, y)

Sets the target of the IK object.

IK:update()

Updates the IK object.

Segment:getMediumPoint()

Returns the medium point of the Segment object.

Segment:pullTo(x, y, strength)

Pulls the Segment object to the given point.

IK:draw()

Draws the IK object.