func UpdateSimulation() {
cellw := SCREEN_WIDTH / (SEA_SUBDIVISION - 1)
var col1, col2 color.ColorRGB
// Update time of day
if speed == 0.0 {
timet = GetTime()
} else {
timet += Delta() * speed
if timet >= 24.0 {
timet -= 24.0
}
}
seq_id = int(timet / 3)
seq_residue = timet/3 - float64(seq_id)
zenith := -(timet/12.0*hge.Pi - hge.Pi_2)
// Interpolate sea and sky colors
col1.SetHWColor(skyTopColors[seq[seq_id]])
col2.SetHWColor(skyTopColors[seq[seq_id+1]])
colSkyTop = col2.MulScalar(seq_residue).Add(col1.MulScalar(1.0 - seq_residue))
col1.SetHWColor(skyBtmColors[seq[seq_id]])
col2.SetHWColor(skyBtmColors[seq[seq_id+1]])
colSkyBtm = col2.MulScalar(seq_residue).Add(col1.MulScalar(1.0 - seq_residue))
col1.SetHWColor(seaTopColors[seq[seq_id]])
col2.SetHWColor(seaTopColors[seq[seq_id+1]])
colSeaTop = col2.MulScalar(seq_residue).Add(col1.MulScalar(1.0 - seq_residue))
col1.SetHWColor(seaBtmColors[seq[seq_id]])
col2.SetHWColor(seaBtmColors[seq[seq_id+1]])
colSeaBtm = col2.MulScalar(seq_residue).Add(col1.MulScalar(1.0 - seq_residue))
var a float64
// Update stars
if seq_id >= 6 || seq_id < 2 {
for i := 0; i < NUM_STARS; i++ {
a = 1.0 - starY[i]/STARS_HEIGHT
a *= rand.Float64(0.6, 1.0)
if seq_id >= 6 {
a *= math.Sin((timet - 18.0) / 6.0 * hge.Pi_2)
} else {
a *= math.Sin((1.0 - timet/6.0) * hge.Pi_2)
}
starA[i] = a
}
}
// Calculate sun position, scale and colors
if seq_id == 2 {
a = math.Sin(seq_residue * hge.Pi_2)
} else if seq_id == 5 {
a = math.Cos(seq_residue * hge.Pi_2)
} else if seq_id > 2 && seq_id < 5 {
a = 1.0
} else {
a = 0.0
}
colSun.SetHWColor(0xFFEAE1BE)
colSun = colSun.MulScalar(1 - a).Add(colWhite.MulScalar(a))
a = (math.Cos(timet/6.0*hge.Pi) + 1.0) / 2.0
if seq_id >= 2 && seq_id <= 6 {
colSunGlow = colWhite.MulScalar(a)
colSunGlow.A = 1.0
} else {
colSunGlow.SetHWColor(0xFF000000)
}
sunX = SCREEN_WIDTH*0.5 + math.Cos(zenith)*ORBITS_RADIUS
sunY = SKY_HEIGHT*1.2 + math.Sin(zenith)*ORBITS_RADIUS
sunS = 1.0 - 0.3*math.Sin((timet-6.0)/12.0*hge.Pi)
sunGlowS = 3.0*(1.0-a) + 3.0
// Calculate moon position, scale and colors
if seq_id >= 6 {
a = math.Sin((timet - 18.0) / 6.0 * hge.Pi_2)
} else {
a = math.Sin((1.0 - timet/6.0) * hge.Pi_2)
}
colMoon.SetHWColor(0x20FFFFFF)
colMoon = colMoon.MulScalar(1 - a).Add(colWhite.MulScalar(a))
colMoonGlow = colWhite
colMoonGlow.A = 0.5 * a
moonX = SCREEN_WIDTH*0.5 + math.Cos(zenith-hge.Pi)*ORBITS_RADIUS
moonY = SKY_HEIGHT*1.2 + math.Sin(zenith-hge.Pi)*ORBITS_RADIUS
moonS = 1.0 - 0.3*math.Sin((timet+6.0)/12.0*hge.Pi)
moonGlowS = a*0.4 + 0.5
// Calculate sea glow
if timet > 19.0 || timet < 4.5 { // moon
a = 0.2 // intensity
if timet > 19.0 && timet < 20.0 {
a *= (timet - 19.0)
} else if timet > 3.5 && timet < 4.5 {
a *= 1.0 - (timet - 3.5)
}
colSeaGlow = colMoonGlow
colSeaGlow.A = a
seaGlowX = moonX
seaGlowSX = moonGlowS * 3.0
seaGlowSY = moonGlowS * 2.0
} else if timet > 6.5 && timet < 19.0 { // sun
a = 0.3 // intensity
if timet < 7.5 {
a *= (timet - 6.5)
} else if timet > 18.0 {
a *= 1.0 - (timet - 18.0)
}
colSeaGlow = colSunGlow
colSeaGlow.A = a
seaGlowX = sunX
seaGlowSX = sunGlowS
seaGlowSY = sunGlowS * 0.6
} else {
colSeaGlow.A = 0.0
}
var dwCol1 hge.Dword
// Move waves and update sea color
for i := 1; i < SEA_SUBDIVISION-1; i++ {
a = float64(i) / (SEA_SUBDIVISION - 1)
col1 = colSeaTop.MulScalar(1 - a).Add(colSeaBtm.MulScalar(a))
dwCol1 = col1.HWColor()
fTime := 2.0 * Time()
a *= 20
for j := 0; j < SEA_SUBDIVISION; j++ {
sea.SetColor(j, i, dwCol1)
dy := a * math.Sin(seaP[i]+(float64(j)/(SEA_SUBDIVISION-1)-0.5)*hge.Pi*16.0-fTime)
sea.SetDisplacement(j, i, 0.0, dy, dist.DISP_NODE)
}
}
dwCol1 = colSeaTop.HWColor()
dwCol2 := colSeaBtm.HWColor()
for j := 0; j < SEA_SUBDIVISION; j++ {
sea.SetColor(j, 0, dwCol1)
sea.SetColor(j, SEA_SUBDIVISION-1, dwCol2)
}
var posX float64
// Calculate light path
if timet > 19.0 || timet < 5.0 { // moon
a = 0.12 // intensity
if timet > 19.0 && timet < 20.0 {
a *= (timet - 19.0)
} else if timet > 4.0 && timet < 5.0 {
a *= 1.0 - (timet - 4.0)
}
posX = moonX
} else if timet > 7.0 && timet < 17.0 { // sun
a = 0.14 // intensity
if timet < 8.0 {
a *= (timet - 7.0)
} else if timet > 16.0 {
a *= 1.0 - (timet - 16.0)
}
posX = sunX
} else {
a = 0.0
}
if a != 0.0 {
k := int(math.Floor(posX / float64(cellw)))
s1 := (1.0 - (posX-float64(k*cellw))/float64(cellw))
s2 := (1.0 - (float64((k+1)*cellw)-posX)/float64(cellw))
if s1 > 0.7 {
s1 = 0.7
}
if s2 > 0.7 {
s2 = 0.7
}
s1 *= a
s2 *= a
for i := 0; i < SEA_SUBDIVISION; i += 2 {
a = math.Sin(float64(i) / (SEA_SUBDIVISION - 1) * hge.Pi_2)
col1.SetHWColor(sea.Color(k, i))
col1.AddEqual(colSun.MulScalar(s1 * (1 - a)))
col1.Clamp()
sea.SetColor(k, i, col1.HWColor())
col1.SetHWColor(sea.Color(k+1, i))
col1.AddEqual(colSun.MulScalar(s2 * (1 - a)))
col1.Clamp()
sea.SetColor(k+1, i, col1.HWColor())
}
}
}
func NewGUIMenuItem(id int, font *Font.Font, snd *Effect, x, y, delay float64, title string) *gui.GUIObject {
mi := new(GUIMenuItem)
mi.GUIObject.Initialize()
mi.GUIObject.Id = id
mi.font = font
mi.snd = snd
mi.delay = delay
mi.title = title
mi.color.SetHWColor(0xFFFFE060)
mi.shadow.SetHWColor(0x30000000)
mi.offset = 0.0
mi.timer = -1.0
mi.timer2 = -1.0
mi.GUIObject.Static = false
mi.GUIObject.Visible = true
mi.GUIObject.Enabled = true
w := font.GetStringWidth(title)
mi.GUIObject.Rect.Set(x-w/2, y, x+w/2, y+mi.font.GetHeight())
mi.GUIObject.Render = func() {
mi.font.SetColor(mi.shadow.HWColor())
mi.font.Render(mi.GUIObject.Rect.X1+mi.offset+3, mi.GUIObject.Rect.Y1+3, Font.TEXT_LEFT, mi.title)
mi.font.SetColor(mi.color.HWColor())
mi.font.Render(mi.GUIObject.Rect.X1-mi.offset, mi.GUIObject.Rect.Y1-mi.offset, Font.TEXT_LEFT, mi.title)
}
mi.GUIObject.Update = func(dt float64) {
if mi.timer2 != -1.0 {
mi.timer2 += dt
if mi.timer2 >= mi.delay+0.1 {
mi.color = mi.scolor2.Add(mi.dcolor2)
mi.shadow = mi.sshadow.Add(mi.dshadow)
mi.offset = 0.0
mi.timer2 = -1.0
} else {
if mi.timer2 < mi.delay {
mi.color = mi.scolor2
mi.shadow = mi.sshadow
} else {
mi.color = mi.scolor2.Add(mi.dcolor2.MulScalar((mi.timer2 - mi.delay) * 10))
mi.shadow = mi.sshadow.Add(mi.dshadow.MulScalar((mi.timer2 - mi.delay) * 10))
}
}
} else if mi.timer != -1.0 {
mi.timer += dt
if mi.timer >= 0.2 {
mi.color = mi.scolor.Add(mi.dcolor)
mi.offset = mi.soffset + mi.doffset
mi.timer = -1.0
} else {
mi.color = mi.scolor.Add(mi.dcolor.MulScalar(mi.timer * 5))
mi.offset = mi.soffset + mi.doffset*mi.timer*5
}
}
}
mi.GUIObject.Enter = func() {
var tcolor2 Color.ColorRGB
mi.scolor2.SetHWColor(0x00FFE060)
tcolor2.SetHWColor(0xFFFFE060)
mi.dcolor2 = tcolor2.Sub(mi.scolor2)
mi.sshadow.SetHWColor(0x00000000)
tcolor2.SetHWColor(0x30000000)
mi.dshadow = tcolor2.Sub(mi.sshadow)
mi.timer2 = 0.0
}
mi.GUIObject.Leave = func() {
var tcolor2 Color.ColorRGB
mi.scolor2.SetHWColor(0xFFFFE060)
tcolor2.SetHWColor(0x00FFE060)
mi.dcolor2 = tcolor2.Sub(mi.scolor2)
mi.sshadow.SetHWColor(0x30000000)
tcolor2.SetHWColor(0x00000000)
mi.dshadow = tcolor2.Sub(mi.sshadow)
mi.timer2 = 0.0
}
mi.GUIObject.IsDone = func() bool {
if mi.timer2 == -1.0 {
return true
}
return false
}
mi.GUIObject.Focus = func(focused bool) {
var tcolor Color.ColorRGB
if focused {
snd.Play()
mi.scolor.SetHWColor(0xFFFFE060)
tcolor.SetHWColor(0xFFFFFFFF)
mi.soffset = 0
mi.doffset = 4
} else {
mi.scolor.SetHWColor(0xFFFFFFFF)
tcolor.SetHWColor(0xFFFFE060)
mi.soffset = 4
mi.doffset = -4
}
mi.dcolor = tcolor.Sub(mi.scolor)
mi.timer = 0.0
}
mi.GUIObject.MouseOver = func(over bool) {
if over {
mi.GUIObject.GUI.SetFocus(mi.GUIObject.Id)
}
}
mi.GUIObject.MouseLButton = func(down bool) bool {
if !down {
mi.offset = 4
return true
}
snd.Play()
mi.offset = 0
return false
}
mi.GUIObject.KeyClick = func(key Key, chr int) bool {
if key == K_ENTER || key == K_SPACE {
mi.GUIObject.MouseLButton(true)
return mi.GUIObject.MouseLButton(false)
}
return false
}
return &mi.GUIObject
}