func genStarfield(pl, pc int) *gc.Pad {
pad, err := gc.NewPad(pl, pc)
if err != nil {
log.Fatal(err)
}
stars := int(float64(pc*pl) * density)
planets := int(float64(pc*pl) * planet_density)
for i := 0; i < stars; i++ {
y, x := rand.Intn(pl), rand.Intn(pc)
c := int16(rand.Intn(4) + 1)
pad.AttrOn(gc.A_BOLD | gc.ColorPair(c))
pad.MovePrint(y, x, ".")
pad.AttrOff(gc.A_BOLD | gc.ColorPair(c))
}
for i := 0; i < planets; i++ {
y, x := rand.Intn(pl), rand.Intn(pc)
c := int16(rand.Intn(2) + 5)
pad.ColorOn(c)
if i%2 == 0 {
pad.MoveAddChar(y, x, 'O')
}
pad.MoveAddChar(y, x, 'o')
pad.ColorOff(c)
}
return pad
}
func main() {
_, err := gc.Init()
if err != nil {
log.Fatal(err)
}
defer gc.End()
// create a new pad of 50 rows and 200 columns...
var pad *gc.Pad
pad, err = gc.NewPad(50, 200)
if err != nil {
log.Fatal(err)
}
// ...and fill it with some characters
for x := 0; x < 50; x++ {
pad.MovePrint(x, x, "This is a pad.")
}
// Refresh the pad to show only a portion of the pad. Understanding
// what these coordinates mean can be a bit tricky. The first two
// coordinates are the position in the pad, in this case 0,5 (remember
// the coordinates in ncurses are y,x). The second set of numbers are the
// coordinates on the screen on which to display the content, so row 5,
// column 10. The last set of numbers tell how high and how wide the
// rectangle to displayed should be, in this case 15 rows long and 25
// columns wide.
pad.Refresh(0, 5, 5, 10, 15, 25)
pad.GetChar()
}