├── .gitignore ├── LICENSE ├── README.md ├── burn.go ├── cmd └── burn │ └── main.go └── term.go /.gitignore: -------------------------------------------------------------------------------- 1 | # Binaries for programs and plugins 2 | *.exe 3 | *.dll 4 | *.so 5 | *.dylib 6 | 7 | # Test binary, build with `go test -c` 8 | *.test 9 | 10 | # Output of the go coverage tool, specifically when used with LiteIDE 11 | *.out 12 | 13 | # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736 14 | .glide/ 15 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # termburn 2 | 3 | ![tty.gif](https://user-images.githubusercontent.com/80381/29080896-05d73028-7c9c-11e7-996c-1fcd5be4c224.gif) 4 | 5 | 6 | ## Requiements 7 | 8 | - https://github.com/nsf/termbox-go 9 | 10 | 11 | ## Installation 12 | 13 | ``` 14 | go get github.com/sugyan/termburn/cmd/burn 15 | ``` 16 | -------------------------------------------------------------------------------- /burn.go: -------------------------------------------------------------------------------- 1 | package termburn 2 | 3 | import ( 4 | "math/rand" 5 | "time" 6 | 7 | "github.com/nsf/termbox-go" 8 | ) 9 | 10 | func init() { 11 | rand.Seed(time.Now().UnixNano()) 12 | } 13 | 14 | func Run() { 15 | if err := termbox.Init(); err != nil { 16 | panic(err) 17 | } 18 | defer termbox.Close() 19 | 20 | termbox.Clear(termbox.ColorDefault, termbox.ColorDefault) 21 | termbox.SetOutputMode(termbox.Output256) 22 | 23 | ch := make(chan termbox.Event) 24 | go func() { 25 | for { 26 | ch <- termbox.PollEvent() 27 | } 28 | }() 29 | 30 | width, height := termbox.Size() 31 | t := newTerminal(width, height) 32 | loop: 33 | for { 34 | select { 35 | case ev := <-ch: 36 | switch ev.Type { 37 | case termbox.EventKey: 38 | if ev.Key == termbox.KeyCtrlC || ev.Key == termbox.KeyEsc { 39 | break loop 40 | } 41 | case termbox.EventResize: 42 | t = newTerminal(ev.Width, ev.Height) 43 | } 44 | break 45 | default: 46 | if err := t.update(); err != nil { 47 | panic(err) 48 | } 49 | time.Sleep(time.Millisecond * 150) 50 | } 51 | } 52 | } 53 | -------------------------------------------------------------------------------- /cmd/burn/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import "github.com/sugyan/termburn" 4 | 5 | func main() { 6 | termburn.Run() 7 | } 8 | -------------------------------------------------------------------------------- /term.go: -------------------------------------------------------------------------------- 1 | package termburn 2 | 3 | import ( 4 | "math/rand" 5 | 6 | "github.com/nsf/termbox-go" 7 | ) 8 | 9 | var colors = []uint16{16, 52, 88, 124, 160, 196, 202, 208, 214, 220, 226, 231} 10 | 11 | type terminal struct { 12 | col, row int 13 | values [][]float32 14 | } 15 | 16 | func newTerminal(col, row int) *terminal { 17 | row++ 18 | values := make([][]float32, row) 19 | for i := 0; i < row; i++ { 20 | values[i] = make([]float32, col) 21 | } 22 | for i := 0; i < col; i++ { 23 | values[row-1][i] = rand.Float32() 24 | } 25 | return &terminal{ 26 | col: col, 27 | row: row, 28 | values: values, 29 | } 30 | } 31 | 32 | func (t *terminal) update() (err error) { 33 | for i := 0; i < t.col; i++ { 34 | val := t.values[t.row-1][i] + rand.Float32()*0.5 - 0.25 35 | t.values[t.row-1][i] = clip(val) 36 | } 37 | for i := t.row - 2; i >= 0; i-- { 38 | for j := 0; j < t.col; j++ { 39 | num, sum := 1, t.values[i+1][j] 40 | if j-1 > 0 { 41 | num++ 42 | sum += t.values[i+1][j-1] 43 | } 44 | if j+1 < t.col-1 { 45 | num++ 46 | sum += t.values[i+1][j+1] 47 | } 48 | if i+2 < t.row-1 { 49 | num++ 50 | sum += t.values[i+1][j] 51 | } 52 | val := sum / float32(num) 53 | val += 0.1*(rand.Float32()-0.5) - 0.5/float32(t.row) 54 | t.values[i][j] = clip(val) 55 | } 56 | } 57 | return t.render() 58 | } 59 | 60 | func (t *terminal) render() (err error) { 61 | for i := 0; i < t.row-1; i++ { 62 | for j := 0; j < t.col; j++ { 63 | value := t.values[i][j] 64 | color := colors[int(value*float32(len(colors)-1))] 65 | termbox.SetCell(j, i, ' ', termbox.ColorDefault, termbox.Attribute(color+1)) 66 | } 67 | } 68 | if err = termbox.Flush(); err != nil { 69 | return 70 | } 71 | return nil 72 | } 73 | 74 | func clip(value float32) float32 { 75 | if value > 1.0 { 76 | return 1.0 77 | } 78 | if value < 0.0 { 79 | return 0.0 80 | } 81 | return value 82 | } 83 | --------------------------------------------------------------------------------