// Draw the "fall" view onto the given PixMap.
func Draw(pm nimble.PixMap, invaders []Invader) {
if pm.Width() != background.Width() || pm.Height() != background.Height() {
panic("fall.Draw: pm and background differ in size")
}
drawDot := false
time := nimble.Now()
if time-lastDotTime >= dotTimeInterval {
lastDotTime = time
drawDot = true
}
pm.Copy(0, 0, &background)
xScale := float32(pm.Width() - tickHalfWidth) // Avoid clipping tic on right side
yScale := float32(pm.Height() - tickHalfHeight) // Avoid clippling tic on bottom
xOffset := float32(0)
yOffset := float32(0)
for _, inv := range invaders {
x := int32(inv.Amplitude*xScale + xOffset)
y := int32(inv.Progress*yScale + yOffset)
r := nimble.Rect{
Left: x - tickHalfWidth,
Top: y - tickHalfHeight,
Right: x + tickHalfWidth,
Bottom: y + tickHalfHeight,
}
pm.DrawRect(r, inv.Color)
background.DrawRect(r, nimble.Black)
if drawDot {
if doty := r.Top - 1; background.Contains(x, doty) {
background.SetPixel(x, doty, inv.Color)
}
}
}
}
func DrawMenuBar(pm nimble.PixMap, menuBar []*Menu) {
// Draw menu
x := int32(0)
for _, m := range menuBar {
m.Draw(pm, x, 0)
w, _ := m.TabSize()
x += w
}
h := menuFont.Height()
pm.DrawRect(nimble.Rect{Top: 0, Left: x, Bottom: h, Right: pm.Width()}, backgroundColor)
pm.DrawRect(nimble.Rect{Top: h, Left: x, Bottom: h + 1, Right: pm.Width()}, separatorColor)
}
// drawFrequonsFourier draws the frequency-domain representation of Frequons.
func drawFrequonsFourier(pm nimble.PixMap) {
c := universe.Zoo
h := harmonicStorage[:len(c)]
var ampScale float32
if autoGain.Value {
// Compute L1 norm of amplitudes
norm := float32(0)
for i := range c {
norm += math32.Abs(c[i].Amplitude)
}
ampScale = 1 / norm
} else {
ampScale = 1 / float32(len(c))
}
fracX, fracY := universe.BoxFraction()
fracX *= zoomCompression
fracY *= zoomCompression
sizeX, sizeY := pm.Size()
// Set up harmonics
// (cx,cy) is center of fourier view
cx, cy := 0.5*float32(sizeX)*fracX, 0.5*float32(sizeY)*fracY
α, β := -0.5*cx, -0.5*cy
ωScale := 200. / float32(sizeX*sizeY)
for i := range h {
ωx := (c[i].Sx - cx) * ωScale
ωy := (c[i].Sy - cy) * ωScale
h[i].Ωx = ωx
h[i].Ωy = ωy
h[i].Phase = α*ωx + β*ωy + phaseRoll
// Scale amplitude so that DFT values fit within domain of color lookup table.
h[i].Amplitude = c[i].Amplitude * ampScale
}
marginX := int32(math32.Round(0.5 * float32(sizeX) * (1 - fracX)))
marginY := int32(math32.Round(0.5 * float32(sizeY) * (1 - fracY)))
fourier.Draw(pm.Intersect(nimble.Rect{
Left: marginX,
Right: sizeX - marginX,
Top: marginY,
Bottom: sizeY - marginY,
}), h, universe.Scheme())
if marginX != 0 || marginY != 0 {
pm.DrawRect(nimble.Rect{Left: 0, Right: sizeX, Top: 0, Bottom: marginY}, nimble.Black)
pm.DrawRect(nimble.Rect{Left: 0, Right: sizeX, Top: sizeY - marginY, Bottom: sizeY}, nimble.Black)
pm.DrawRect(nimble.Rect{Left: 0, Right: marginX, Top: marginY, Bottom: sizeY - marginY}, nimble.Black)
pm.DrawRect(nimble.Rect{Left: sizeX - marginX, Right: sizeX, Top: marginY, Bottom: sizeY - marginY}, nimble.Black)
}
}
func (context) Render(pm nimble.PixMap) {
dt := updateClock()
// Advance the boot sequence
advanceBootSequence(dt)
// Draw dividers
for i, r := range divider {
if i < dividerCount {
pm.DrawRect(r, nimble.White)
} else {
pm.DrawRect(r, nimble.Black)
}
}
if fourierIsVisible {
// Update universe
xf, yf := fourierPort.RelativeToLeftTop(mouseX, mouseY)
switch universe.Update(dt, xf, yf) {
case universe.GameWin:
youWin()
case universe.GameLose:
youLose()
}
updateZoom(dt)
// Fourier view
if rollPhase.Value {
updatePhaseRoll(dt)
}
drawFrequonsFourier(pm.Intersect(fourierPort))
drawFrequonsSpatial(pm.Intersect(fourierPort), xf, yf)
tallyFourierFrame()
} else {
// Teletype view
teletype.Draw(pm.Intersect(fourierPort))
}
// Fall view
if fallIsVisible {
inv := invStorage[:len(universe.Zoo)-1]
for k := range inv {
c := &universe.Zoo[k+1]
inv[k] = fall.Invader{
Progress: c.Progress,
Amplitude: c.Amplitude,
Color: pastels.Pixel(0, int32(c.Id)),
}
}
fall.Draw(pm.Intersect(fallPort), inv)
} else {
pm.DrawRect(fallPort, nimble.Black)
}
// Radar view
if radarIsVisible {
radar.Draw(pm.Intersect(radarPort), universe.Scheme(), radarIsRunning)
} else {
pm.DrawRect(radarPort, nimble.Black)
}
// Score
if scoreIsVisible {
score.Draw(pm.Intersect(scorePort), universe.NKill())
} else {
pm.DrawRect(scorePort, nimble.Black)
}
// Menu bar
if len(menuBar) > 0 {
menu.DrawMenuBar(pm, menuBar)
}
// Cursor
showCursor := true
switch currentMode {
case modeGame:
showCursor = false
case modeTraining:
showCursor = !fourierPort.Contains(mouseX, mouseY)
}
if showCursor != cursorIsVisible {
nimble.ShowCursor(showCursor)
cursorIsVisible = showCursor
}
}
// Draw draws the menu with its upper left corner at (x,y)
func (m *Menu) Draw(pm nimble.PixMap, x, y int32) {
// Draw the tab
if m.tabWidth == 0 {
// Lazily compute tabWidth and itemHeight
m.computeTabSize()
}
var back, fore nimble.Pixel
if m.hilightRow != showNone {
back = tabHilightColor
fore = backgroundColor
} else {
back = backgroundColor
fore = foregroundColor
}
m.tabRect = nimble.MakeRect(x, y, 2*marginWidth+int32(m.tabWidth), int32(m.itemHeight))
pm.DrawRect(m.tabRect, back)
pm.DrawText(x+marginWidth, y, m.Label, fore, menuFont)
pm.DrawRect(nimble.Rect{Left: m.tabRect.Left, Top: m.tabRect.Bottom, Right: m.tabRect.Right, Bottom: m.tabRect.Bottom + 1}, separatorColor)
if m.hilightRow != showNone {
if m.itemWidth == 0 {
// Lazily compute itemsWidth
w := int32(m.tabWidth)
for i := range m.Items {
p := m.Items[i].GetItem()
w0, _ := menuFont.Size(p.Label)
if w0 > w {
w = w0
}
}
m.itemWidth = uint16(checkWidth + w + 3 + 4*marginWidth)
}
w := int32(m.itemWidth)
h := int32(m.itemHeight)
m.itemsRect = nimble.MakeRect(x, m.tabRect.Bottom, w, h*int32(len(m.Items)))
r := m.itemsRect
r.Left += 1
r.Right -= 1
pm.DrawRect(r, backgroundColor)
// Draw left border
r.Left -= 1
r.Right = r.Left + 1
pm.DrawRect(r, separatorColor)
// Draw middle border
r.Left += 1 + checkWidth + 2*marginWidth
r.Right = r.Left + 1
pm.DrawRect(r, separatorColor)
// Draw right border
r.Left = m.itemsRect.Right - 1
r.Right = r.Left + 1
pm.DrawRect(r, separatorColor)
// Draw the items
checkX := x + 1 + marginWidth
labelX := x + 2 + 3*marginWidth + checkWidth
for i := range m.Items {
mi := m.Items[i].GetItem()
yi := m.itemsRect.Top + h*int32(i)
if i == int(m.hilightRow-hilightBase) {
pm.DrawRect(nimble.MakeRect(x, yi, int32(m.itemWidth), h), itemHilightColor)
}
if i == 0 {
pm.DrawRect(nimble.Rect{x, yi, m.itemsRect.Right - 1, yi + 1}, separatorColor)
} else if mi.Flags&Separator != 0 || i == 0 {
pm.DrawRect(nimble.Rect{labelX - marginWidth, yi, m.itemsRect.Right - 1, yi + 1}, separatorColor)
}
fore := choose(mi.Flags&Disabled != 0, disabledForegroundColor, foregroundColor)
if mi.Check != 0 {
pm.DrawText(checkX, yi, string(mi.Check), fore, checkFont)
}
pm.DrawText(labelX, yi, mi.Label, fore, menuFont)
}
}
}