//---------------------------------------------------------------------------
// drawing "rainbow" box around the terminal screen
//---------------------------------------------------------------------------
func drawBox(seed uint16) {
w := termbox.Width()
h := termbox.Height()
color := uint16(seed)
var x, x2, y, y2 uint
x2 = w - 1
y2 = h - 1
// horizontal
for x = 0; x < w; x++ {
termbox.ChangeCell(x, y, ' ', termbox.BLACK, color)
termbox.ChangeCell(x, y2, ' ', termbox.BLACK, color)
color++
if color > 7 {
color = 0
}
}
x = 0
// overdrawing corners here, but it's ok
// vertical
for y = 0; y < h; y++ {
termbox.ChangeCell(x, y, ' ', termbox.BLACK, color)
termbox.ChangeCell(x2, y, ' ', termbox.BLACK, color)
color++
if color > 7 {
color = 0
}
}
}
//---------------------------------------------------------------------------
// utility function for drawing strings
//---------------------------------------------------------------------------
func drawString(x uint, y uint, s string, fg uint16, bg uint16) {
for _, r := range s {
termbox.ChangeCell(x, y, r, fg, bg)
x++
}
}