// 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 updateClock() (dt float32) {
t := nimble.Now()
if lastTime > 0 {
dt = float32(t - lastTime)
} else {
dt = 0
}
lastTime = t
return
}
// Draw the teletype contents on the given PixMap.
func Draw(pm nimble.PixMap) {
var r *[]byte = nil
if displayCursor && math.Mod(nimble.Now(), 1) >= 0.5 {
r = lastLine()
}
if r != nil {
*r = append(*r, 0)
}
draw(pm, teletypeDisplay[:])
if r != nil {
*r = (*r)[:len(*r)-1]
}
}
