120 lines
1.9 KiB
Go
120 lines
1.9 KiB
Go
package main
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import (
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"log"
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"time"
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"github.com/nsf/termbox-go"
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)
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func main() {
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t := NewTB()
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t.Run()
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}
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type TB struct {
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viewX, viewY int
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vcenter int
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hcenter int
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arms [][]rune
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arm int
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}
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func NewTB() *TB {
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return &TB{
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arms: [][]rune{
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{'.', '.'},
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{'.', '.'},
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{'-', '-'},
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{'\\', '/'},
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{'\'', '/'},
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{'\\', '/'},
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{'\\', '\''},
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{'-', '-'},
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},
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}
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}
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func (tb *TB) Run() {
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err := termbox.Init()
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if err != nil {
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log.Fatal(err)
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}
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defer termbox.Close()
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tb.viewX, tb.viewY = termbox.Size()
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tb.vcenter = tb.viewY / 2.0
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tb.hcenter = tb.viewX / 2.0
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events := make(chan termbox.Event)
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go func() {
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for {
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events <- termbox.PollEvent()
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}
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}()
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termbox.HideCursor()
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func() {
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tick := time.Tick(200 * time.Millisecond)
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for {
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termbox.Clear(termbox.ColorBlack, termbox.ColorBlack)
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tb.draw()
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err := termbox.Flush()
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if err != nil {
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log.Fatal(err)
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}
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select {
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case <-tick:
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case event := <-events:
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switch event.Type {
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case termbox.EventKey:
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switch event.Key {
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case termbox.KeyCtrlZ, termbox.KeyCtrlC:
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log.Printf("exiting ...")
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return
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}
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switch event.Ch {
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case 'q':
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return
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}
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case termbox.EventResize:
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tb.viewX, tb.viewY = event.Width, event.Height
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tb.vcenter = tb.viewY / 2.0
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tb.hcenter = tb.viewX / 2.0
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case termbox.EventError:
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log.Fatalf("Quitting because of termbox error: \n%s\n", event.Err)
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}
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}
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}
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}()
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}
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func (tb *TB) draw() {
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termbox.SetCell(
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tb.hcenter-1,
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tb.vcenter,
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tb.arms[tb.arm%len(tb.arms)][0],
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termbox.ColorWhite|termbox.AttrBold, termbox.ColorBlack,
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)
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termbox.SetCell(
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tb.hcenter,
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tb.vcenter,
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'o',
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termbox.ColorWhite|termbox.AttrBold, termbox.ColorBlack,
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)
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termbox.SetCell(
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tb.hcenter+1,
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tb.vcenter,
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tb.arms[tb.arm%len(tb.arms)][1],
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termbox.ColorWhite|termbox.AttrBold, termbox.ColorBlack,
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)
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tb.arm += 1
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}
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