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Go Reference GitHub Action Coverage Status Go Report Card

TCG - terminal cell graphics

Go Graphics library for use in a text terminal. Only 1bit graphics can be used with two colors. Used unicode block symbols for drawing. 2x3 mode is supported by the Iosevka font or some terminals (like default on Ubuntu).

Features

Install

go get github.com/msoap/tcg

Usage

package main

import (
	"log"
	"time"

	"github.com/gdamore/tcell/v2"
	"github.com/msoap/tcg"
)

func main() {
	tg, err := tcg.New(tcg.Mode2x3) // each terminal symbol contains a 2x3 pixels grid, also you can use 1x1, 1x2, and 2x2 modes
	if err != nil {
		log.Fatalf("create tcg: %s", err)
	}

	i := 0
	for {
		pixColor := tg.Buf.At(10, 10)      // get color of pixel
		tg.Buf.Set(11, 11, pixColor)       // draw one pixel with color from 10,10
		tg.Buf.Line(0, 0, i, i, tcg.Black) // draw a diagonal line
		tg.Show()                          // synchronize buffer with screen

		if tg.TCellScreen.HasPendingEvent() {
			if ev, ok := tg.TCellScreen.PollEvent().(*tcell.EventKey); ok && ev.Rune() == 'q' {
				break // exit by 'q' key
			}
		}
		i++
		time.Sleep(time.Second)
	}

	tg.Finish() // finish application and restore screen
}

See more examples in examples folder.

Screenshot

Game of Life example in iTerm2 terminal:

TCG library example screenshot for Game of Life

See more screenshots.

TODO

  • fonts support
  • sprites
  • animation in sprite

See also

Unicode symbols:

Supported fonts (for "2x3" mode):