func horiz() bool {
var lev [MAXN]int
h := 0
for i := 0; i < NY; i++ {
for j := 0; board[i][j] != 0; j++ {
if j == NX-1 {
lev[h] = i
h++
break
}
}
}
if h == 0 {
return false
}
r := rboard
newscreen = false
for j := 0; j < h; j++ {
r.Min.Y = rboard.Min.Y + lev[j]*pcsz
r.Max.Y = r.Min.Y + pcsz
draw.DrawMask(screen, r, image.White, image.ZP, whitemask, image.ZP, draw.Over)
display.FlushImage()
}
PlaySound(whoosh)
for i := 0; i < 3; i++ {
pause(250)
if newscreen {
drawboard()
break
}
for j := 0; j < h; j++ {
r.Min.Y = rboard.Min.Y + lev[j]*pcsz
r.Max.Y = r.Min.Y + pcsz
draw.DrawMask(screen, r, image.White, image.ZP, whitemask, image.ZP, draw.Over)
}
display.FlushImage()
}
r = rboard
for j := 0; j < h; j++ {
i := NY - lev[j] - 1
score(250 + 10*i*i)
r.Min.Y = rboard.Min.Y
r.Max.Y = rboard.Min.Y + lev[j]*pcsz
draw.Draw(screen, r.Add(image.Pt(0, pcsz)), screen, r.Min)
r.Max.Y = rboard.Min.Y + pcsz
draw.Draw(screen, r, image.White, image.ZP)
for k := lev[j] - 1; k >= 0; k-- {
board[k+1] = board[k]
}
board[0] = [NX]byte{}
}
display.FlushImage()
return true
}
func undrawpiece() {
var mask image.Image
if collider(pos, br.Max) {
mask = bbmask
}
draw.DrawMask(screen, br.Add(pos), image.White, bbr.Min, mask, bbr.Min, draw.Over)
}
func setpiece(p *Piece) {
draw.Draw(bb, bbr, image.White, image.ZP)
draw.Draw(bbmask, bbr, image.Transparent, image.ZP)
br = image.Rect(0, 0, 0, 0)
br2 = br
piece = p
if p == nil {
return
}
var op image.Point
var r image.Rectangle
r.Min = bbr.Min
for i, pt := range p.d {
r.Min.X += pt.X * pcsz
r.Min.Y += pt.Y * pcsz
r.Max.X = r.Min.X + pcsz
r.Max.Y = r.Min.Y + pcsz
if i == 0 {
draw.Draw(bb, r, image.Black, image.ZP)
draw.Draw(bb, r.Inset(1), txpix[piece.tx], image.ZP)
draw.Draw(bbmask, r, image.Opaque, image.ZP)
op = r.Min
} else {
draw.Draw(bb, r, bb, op)
draw.Draw(bbmask, r, bbmask, op)
}
if br.Max.X < r.Max.X {
br.Max.X = r.Max.X
}
if br.Max.Y < r.Max.Y {
br.Max.Y = r.Max.Y
}
}
br.Max = br.Max.Sub(bbr.Min)
delta := image.Pt(0, DY)
br2.Max = br.Max.Add(delta)
r = br.Add(bb2r.Min)
r2 := br2.Add(bb2r.Min)
draw.Draw(bb2, r2, image.White, image.ZP)
draw.Draw(bb2, r.Add(delta), bb, bbr.Min)
draw.Draw(bb2mask, r2, image.Transparent, image.ZP)
draw.DrawMask(bb2mask, r, image.Opaque, bbr.Min, bbmask, image.ZP, draw.Over)
draw.DrawMask(bb2mask, r.Add(delta), image.Opaque, bbr.Min, bbmask, image.ZP, draw.Over)
}
func movepiece() bool {
var mask image.Image
if collide(image.Pt(pos.X, pos.Y+pcsz), piece) {
return false
}
if collider(pos, br2.Max) {
mask = bb2mask
}
draw.DrawMask(screen, br2.Add(pos), bb2, bb2r.Min, mask, bb2r.Min, draw.Over)
pos.Y += DY
display.FlushImage()
return true
}
func (c *conn) FlushImageRect(r image.Rectangle) {
c.flushLock.Lock()
draw.DrawMask(c.bufimg, r, c.img, r.Min, nil, image.ZP, draw.Src)
c.dirty = c.dirty.Union(r)
// We do the send (the <- operator) in an expression context, rather than in
// a statement context, so that it does not block, and fails if the buffered
// channel is full (in which case there already is a flush request pending).
// We send with the lock held to avoid the flusher picking up our flush
// notification after it has actually dealt with it.
select {
case c.flush <- false:
default:
}
c.flushLock.Unlock()
}
func drawboard() {
draw.Border(screen, rboard.Inset(-2), 2, image.Black, image.ZP)
draw.Draw(screen, image.Rect(rboard.Min.X, rboard.Min.Y-2, rboard.Max.X, rboard.Min.Y),
image.White, image.ZP)
for i := 0; i < NY; i++ {
for j := 0; j < NX; j++ {
if board[i][j] != 0 {
drawsq(screen, image.Pt(rboard.Min.X+j*pcsz, rboard.Min.Y+i*pcsz), int(board[i][j]-16))
}
}
}
score(0)
if suspended {
draw.DrawMask(screen, screenr, image.White, image.ZP, whitemask, image.ZP, draw.Over)
}
}
func (t *Tile) Draw(dst draw.Image, clipr draw.Rectangle) {
r := t.r.Clip(clipr)
draw.DrawMask(dst, r, t.image, r.Min.Sub(t.r.Min), nil, draw.ZP, draw.Src)
}
func drawpiece() {
draw.DrawMask(screen, br.Add(pos), bb, bbr.Min, bbmask, image.ZP, draw.Over)
if suspended {
draw.DrawMask(screen, br.Add(pos), image.White, image.ZP, whitemask, image.ZP, draw.Over)
}
}