/
keyboard.go
60 lines (53 loc) · 1.24 KB
/
keyboard.go
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package snake
import "github.com/nsf/termbox-go"
type keyboardEventType int
// Keyboard events
const (
MOVE keyboardEventType = 1 + iota
RETRY
END
)
type keyboardEvent struct {
eventType keyboardEventType
key termbox.Key
}
func keyToDirection(k termbox.Key) direction {
switch k {
case termbox.KeyArrowLeft:
return LEFT
case termbox.KeyArrowDown:
return DOWN
case termbox.KeyArrowRight:
return RIGHT
case termbox.KeyArrowUp:
return UP
default:
return 0
}
}
func listenToKeyboard(evChan chan keyboardEvent) {
termbox.SetInputMode(termbox.InputEsc)
for {
switch ev := termbox.PollEvent(); ev.Type {
case termbox.EventKey:
switch ev.Key {
case termbox.KeyArrowLeft:
evChan <- keyboardEvent{eventType: MOVE, key: ev.Key}
case termbox.KeyArrowDown:
evChan <- keyboardEvent{eventType: MOVE, key: ev.Key}
case termbox.KeyArrowRight:
evChan <- keyboardEvent{eventType: MOVE, key: ev.Key}
case termbox.KeyArrowUp:
evChan <- keyboardEvent{eventType: MOVE, key: ev.Key}
case termbox.KeyEsc:
evChan <- keyboardEvent{eventType: END, key: ev.Key}
default:
if ev.Ch == 'r' {
evChan <- keyboardEvent{eventType: RETRY, key: ev.Key}
}
}
case termbox.EventError:
panic(ev.Err)
}
}
}