func handleInput(stdscr *gc.Window, ship *Ship) bool {
lines, cols := stdscr.MaxYX()
y, x := ship.YX()
k := stdscr.GetChar()
switch byte(k) {
case 0:
break
case 'a':
x--
if x < 2 {
x = 2
}
case 'd':
x++
if x > cols-3 {
x = cols - 3
}
case 's':
y++
if y > lines-4 {
y = lines - 4
}
case 'w':
y--
if y < 2 {
y = 2
}
case ' ':
objects = append(objects, newBullet(y+1, x+4))
objects = append(objects, newBullet(y+3, x+4))
default:
return false
}
ship.MoveWindow(y, x)
return true
}
func main() {
stdscr, err := gc.Init()
if err != nil {
log.Fatal(err)
}
defer gc.End()
// Turn off character echo, hide the cursor and disable input buffering
gc.Echo(false)
gc.CBreak(true)
gc.Cursor(0)
stdscr.Print("Use arrow keys to move the window. Press 'q' to exit")
stdscr.NoutRefresh()
// Determine the center of the screen and offset those coordinates by
// half of the window size we are about to create. These coordinates will
// be used to move our window around the screen
rows, cols := stdscr.MaxYX()
height, width := 5, 10
y, x := (rows-height)/2, (cols-width)/2
// Create a new window centered on the screen and enable the use of the
// keypad on it so the arrow keys are available
var win *gc.Window
win, err = gc.NewWindow(height, width, y, x)
if err != nil {
log.Fatal(err)
}
win.Keypad(true)
main:
for {
// Clear the section of screen where the box is currently located so
// that it is blanked by calling Erase on the window and refreshing it
// so that the chances are sent to the virtual screen but not actually
// output to the terminal
win.Erase()
win.NoutRefresh()
// Move the window to it's new location (if any) and redraw it
win.MoveWindow(y, x)
win.Box(gc.ACS_VLINE, gc.ACS_HLINE)
win.NoutRefresh()
// Update will flush only the characters which have changed between the
// physical screen and the virtual screen, minimizing the number of
// characters which must be sent
gc.Update()
// In order for the window to display correctly, we must call GetChar()
// on it rather than stdscr
switch win.GetChar() {
case 'q':
break main
case gc.KEY_LEFT:
if x > 0 {
x--
}
case gc.KEY_RIGHT:
if x < cols-width {
x++
}
case gc.KEY_UP:
if y > 1 {
y--
}
case gc.KEY_DOWN:
if y < rows-height {
y++
}
}
}
win.Delete()
}
func printmenu(w *gc.Window, menu []string, active int) {
y, x := 2, 2
w.Box(0, 0)
for i, s := range menu {
if i == active {
w.AttrOn(gc.A_REVERSE)
w.MovePrint(y+i, x, s)
w.AttrOff(gc.A_REVERSE)
} else {
w.MovePrint(y+i, x, s)
}
}
w.Refresh()
}
func main() {
f, err := os.Create("err.log")
if err != nil {
log.Fatal(err)
}
defer f.Close()
log.SetOutput(f)
var stdscr *gc.Window
stdscr, err = gc.Init()
if err != nil {
log.Println("Init:", err)
}
defer gc.End()
rand.Seed(time.Now().Unix())
gc.StartColor()
gc.Cursor(0)
gc.Echo(false)
gc.HalfDelay(1)
gc.InitPair(1, gc.C_WHITE, gc.C_BLACK)
gc.InitPair(2, gc.C_YELLOW, gc.C_BLACK)
gc.InitPair(3, gc.C_MAGENTA, gc.C_BLACK)
gc.InitPair(4, gc.C_RED, gc.C_BLACK)
gc.InitPair(5, gc.C_BLUE, gc.C_BLACK)
gc.InitPair(6, gc.C_GREEN, gc.C_BLACK)
lines, cols := stdscr.MaxYX()
pl, pc := lines, cols*3
ship := newShip(lines/2, 5)
objects = append(objects, ship)
field := genStarfield(pl, pc)
text := stdscr.Duplicate()
c := time.NewTicker(time.Second / 2)
c2 := time.NewTicker(time.Second / 16)
px := 0
loop:
for {
text.MovePrintf(0, 0, "Life: [%-5s]", lifeToText(ship.life))
stdscr.Erase()
stdscr.Copy(field.Window, 0, px, 0, 0, lines-1, cols-1, true)
drawObjects(stdscr)
stdscr.Overlay(text)
stdscr.Refresh()
select {
case <-c.C:
spawnAsteroid(stdscr.MaxYX())
if px+cols >= pc {
break loop
}
px++
case <-c2.C:
updateObjects(stdscr.MaxYX())
drawObjects(stdscr)
default:
if !handleInput(stdscr, ship) || ship.Expired(-1, -1) {
break loop
}
}
}
msg := "Game Over"
end, err := gc.NewWindow(5, len(msg)+4, (lines/2)-2, (cols-len(msg))/2)
if err != nil {
log.Fatal("game over:", err)
}
end.MovePrint(2, 2, msg)
end.Box(gc.ACS_VLINE, gc.ACS_HLINE)
end.Refresh()
gc.Nap(2000)
}
func (s *Ship) Draw(w *gc.Window) {
w.Overlay(s.Window)
}
func (e *Explosion) Draw(w *gc.Window) {
w.Overlay(e.Window)
}
func (b *Bullet) Draw(w *gc.Window) {
w.Overlay(b.Window)
}
func (a *Asteroid) Draw(w *gc.Window) {
w.Overlay(a.Window)
}
