dbngo

A tiny Design By Numbers clone written in Go.
Generate PNG adn GIF from .dbn files.

Example

// gradient.dbn

Repeat A 0 100 {
  Pen A
  Set Y (100 - A)
  Line 0 Y 100 Y
}

$ dbngo -i gradient.dbn -p gradient.png -g gradient.gif -s 2

Live demo with wasm

https://dbngo.tnantoka.com/

Commands

• Paper
• Pen
• Line
• Set
• Set (Dot)
• Set (Copy)
• Repeat
• Same/Notsame
• Smaller/Notsmaller
• Command
• Load
• Number
• Mouse
• Forever
• Key
• Net
• Time
• Array

Built-in libraries

• Letters

Diffs

Command	DBN	dbngo
Load	Load lib.dbn	Load "lib.dbn"

Examples

• amoebic
• bandedclock
• calculate
• commands
• dancinguy
• dancingy
• dots
• grainsofrain
• graymachine
• headsortails
• intersecting
• line
• looping
• meeber
• merging
• nervousguy
• nesting1
• nesting2
• painting
• paper
• paramecium
• plaid
• probing
• quantitative
• questions
• raininglines
• reactive
• repeating
• rocket2
• rockettime
• thehunt
• time1
• time2
• tuftball
• variable
• mitpress/*

Development

$ go install golang.org/x/tools/cmd/goyacc@latest

$ goyacc -o parser/parser.go parser/parser.go.y

$ go fmt ./...

$ go test $(go list ./... | grep -v /wasm) -coverprofile=cover_broken.out && \
  cat cover_broken.out | grep -v yaccpar | grep -v .y > cover.out && \
  go tool cover -html=cover.out -o coverage.html

$ go run main.go -i testdata/hello.dbn -p tmp/dbngo.png -g tmp/dbngo.gif -s 2

Acknowledgements

• Design By Numbers
• Writing An Interpreter In Go

Author

tnantoka