PicoTurtle

• A simple Turtle programming environment.
• Turtle programs are written in Lua in cross-platform GUI.

Image Courtesy fastsdxl.ai -> https://fastsdxl.ai/share/ot110dfvy5kl

Status

Currently an early dev only alpla release. Expect many changes.

Install

Windows 64-bit

Latest release installer is PicoTurtle 0.2.0-alpha.7

Linux

See Build

Macos

See Build

Build

• Uses cmake and vcpkg for build. See the CMakeLists.txt file for details.
• Use the Makefile target make genbuild build to generate a cmake build and then call the build for your platform.
• Detailed build instructions will be provided in subsequent releases.

Run

• Use make target make run to run the program.
• Editor will load with a sample program.
• Look under <project_dir>/lua for sample programs which will run with PicoTurtle.

Documentation

See PicoTurtle Docs

Sample Turtle Program

-- fern.lua
-- Author: Abhishek Mishra
-- Date: 15/01/2022
--
-- Draws a fern
--

-- fern: function which
-- calls itself recursively
-- till the size is less than 1
-- to draw the fern.

local picoturtle = require "picoturtle"

-- if called from another script, t will be set to a turtle object
-- if t is not set to a turtle (i.e. it is nil) then create a new one.
local t = t or picoturtle.new()

-- reset turtle in case we are reusing a passed turtle object
t:reset()

function fern(size, sign)
    if (size < 1) then
        return
    end

    t:forward(size)

    t:right(70 * sign)
    fern(size / 2, sign * -1)
    t:left(70 * sign)

    t:forward(size)

    t:left(70 * sign)
    fern(size / 2, sign)
    t:right(70 * sign)

    t:right(7 * sign)
    fern(size - 2, sign)
    t:left(7 * sign)

    t:forward(-size)
    t:forward(-size)
end

t:penup()
t:back(200)

t:right(90)
t:back(20)
t:pencolor(200, 200, 0)
t:font('Calibri', 50)
t:filltext('Fern')
t:forward(20)
t:left(90)
t:forward(50)

t:pencolor(128, 128, 0)
t:pendown()
fern(25, 1)