public void AddLiquid(int amount, Vector2 pos)
{
if (amount <= 0)
return;
if (pos.X < 0)
pos.X = 0;
if (pos.Y < 0)
pos.Y = 0;
if (pos.X >= W)
pos.X = W - 1;
if (pos.Y >= H)
pos.Y = H - 1;
fixed (TileMapElement* tptr = tileMap)
for (int i = 0; i < W * H; i++)
(*(tptr + i)).updated = false;
List<long> open = new List<long>();
int curind = 0;
fixed (TileMapElement* ptrmap = tileMap)
{
open.Add((long)(ptrmap + (int)pos.X * H + (int)pos.Y));
while (open.Count > curind && amount > 0)
{
a = (TileMapElement*)((long)open[curind]);
curind++;
//(*a).updated = true;
if ((*a).Free && (*a).level < MaxLevel)
{
if ((*a).level + amount >= MaxLevel)
{
wasChanged = true;
amount -= (MaxLevel - (*a).level);
(*a).level = MaxLevel;
}
else
{
wasChanged = true;
(*a).level += amount;
amount = 0;
}
}
if ((*a).x > 0 && !(*(l = a - H)).updated)//left
{
open.Add((long)l);
(*l).updated = true;
}
if ((*a).x < W - 1 && !(*(l = a + H)).updated)//right
{
open.Add((long)l);
(*l).updated = true;
}
if ((*a).y > 0 && !(*(l = a - 1)).updated)//up
{
open.Add((long)l);
(*l).updated = true;
}
if ((*a).y < H - 1 && !(*(l = a + 1)).updated)//down
{
open.Add((long)l);
(*l).updated = true;
}
}
}
}
//TODO optimize
private unsafe void _updatePass()
{
if (!wasChanged)
{
return;
}
wasChanged = false;
int x, y;
updateSideSwapper++;
if (updateSideSwapper >= 3)
{
updateSideSwapper = 0;
}
bool ussb = updateSideSwapper > 0;
int inc = ussb ? 1 : -1;
int start = ussb ? 0 : W - 1;
fixed(TileMapElement *ptrmap = tileMap)
{
for (y = H - 1; y >= 0; y--)
{
//swapps between starting from left and starting from right
for (x = start; (ussb && x < W) || (!ussb && x >= 0); x += inc)
{
a = ptrmap + y + x * H;
if ((*a).level != 0)
{
l = x > 0 ? ptrmap + y + (x - 1) * H : null;
r = x < W - 1 ? ptrmap + y + (x + 1) * H : null;
d = y < H - 1 ? ptrmap + (y + 1) + x * H : null;
l = (l != null && (*l).Free) ? l : null;
r = (r != null && (*r).Free) ? r : null;
d = (d != null && (*d).Free) ? d : null;
if (d != null && (*d).level != MaxLevel)//drop down
{
wasChanged = true;
if ((*d).level + (*a).level <= MaxLevel)
{
(*d).level += (*a).level;
(*a).level = 0;
continue;
}
else
{
(*a).level -= MaxLevel - (*d).level;
(*d).level = MaxLevel;
}
}
//split left and right
if (r != null)
{
if (l == null)
{
if ((*a).level < 2 && (*r).level < 2)
{
continue;
}
int lev = (*r).level + (*a).level;
if ((*a).level != lev / 2)
{
wasChanged = true;
}
(*r).level = lev / 2;
(*a).level = (*r).level;
if (lev % 2 == 1)
{
(*r).level++;
}
continue;
}
else
{
if ((*a).level < 2 && (*r).level < 2 && (*l).level < 2)
{
continue;
}
int lev = (*l).level + (*a).level + (*r).level;
if ((*a).level != lev / 3)
{
wasChanged = true;
}
(*l).level = lev / 3;
(*r).level = (*l).level;
(*a).level = (*l).level;
if (lev % 3 >= 1)
{
(*r).level++;
}
if (lev % 3 == 2)
{
(*l).level++;
}
continue;
}
}
if (l != null)
{
if ((*a).level < 2 && (*l).level < 2)
{
continue;
}
int lev = (*l).level + (*a).level;
if ((*a).level != lev / 2)
{
wasChanged = true;
}
(*l).level = lev / 2;
(*a).level = (*l).level;
if (lev % 2 == 1)
{
(*l).level++;
}
continue;
}
}
}
}
}
}
//TODO optimize
private unsafe void _updatePass()
{
if (!wasChanged)
return;
wasChanged = false;
int x, y;
updateSideSwapper++;
if (updateSideSwapper >= 3)
updateSideSwapper = 0;
bool ussb = updateSideSwapper > 0;
int inc = ussb ? 1 : -1;
int start = ussb ? 0 : W - 1;
fixed (TileMapElement* ptrmap = tileMap)
{
for (y = H - 1; y >= 0; y--)
{
//swapps between starting from left and starting from right
for (x = start; (ussb && x < W) || (!ussb && x >= 0); x += inc)
{
a = ptrmap + y + x * H;
if ((*a).level != 0)
{
l = x > 0 ? ptrmap + y + (x - 1) * H : null;
r = x < W - 1 ? ptrmap + y + (x + 1) * H : null;
d = y < H - 1 ? ptrmap + (y + 1) + x * H : null;
l = (l != null && (*l).Free) ? l : null;
r = (r != null && (*r).Free) ? r : null;
d = (d != null && (*d).Free) ? d : null;
if (d != null && (*d).level != MaxLevel)//drop down
{
wasChanged = true;
if ((*d).level + (*a).level <= MaxLevel)
{
(*d).level += (*a).level;
(*a).level = 0;
continue;
}
else
{
(*a).level -= MaxLevel - (*d).level;
(*d).level = MaxLevel;
}
}
//split left and right
if (r != null)
{
if (l == null)
{
if ((*a).level < 2 && (*r).level < 2)
continue;
int lev = (*r).level + (*a).level;
if ((*a).level != lev / 2)
wasChanged = true;
(*r).level = lev / 2;
(*a).level = (*r).level;
if (lev % 2 == 1)
(*r).level++;
continue;
}
else
{
if ((*a).level < 2 && (*r).level < 2 && (*l).level < 2)
continue;
int lev = (*l).level + (*a).level + (*r).level;
if ((*a).level != lev / 3)
wasChanged = true;
(*l).level = lev / 3;
(*r).level = (*l).level;
(*a).level = (*l).level;
if (lev % 3 >= 1)
(*r).level++;
if (lev % 3 == 2)
(*l).level++;
continue;
}
}
if (l != null)
{
if ((*a).level < 2 && (*l).level < 2)
continue;
int lev = (*l).level + (*a).level;
if ((*a).level != lev / 2)
wasChanged = true;
(*l).level = lev / 2;
(*a).level = (*l).level;
if (lev % 2 == 1)
(*l).level++;
continue;
}
}
}
}
}
}
public void SetAmount(int amount)
{
if (amount < 0)
return;
if (amount == 0)
{
fixed (TileMapElement* ptrmap = tileMap)
{
for (int i = 0; i < W*H; i++)
{
(*(ptrmap + i)).level = 0;
}
return;
}
}
wasChanged = true;
fixed (TileMapElement* ptrmap = tileMap)
{
for (int y = H - 1; y >= 0 && amount > 0; y--)
for (int x = 0; x < W && amount > 0; x++)
{
if ((*(a = ptrmap + y + x * H)).Free)
{
if (amount > MaxLevel)
{
(*a).level = MaxLevel;
amount -= MaxLevel;
}
else
{
(*a).level = amount;
amount = 0;
}
}
}
}
}
public void RemoveFromTop(int amount)
{
if (amount <= 0)
return;
wasChanged = true;
fixed (TileMapElement* ptrmap = tileMap)
{
for (int y = 0; y < H; y++)
for (int x = 0; x < W; x++)
{
if ((*(a = ptrmap + y + x * H)).Free && (*a).level > 0)
{
if ((*a).level > amount)
{
(*a).level -= amount;
return;
}
else
{
amount -= (*a).level;
(*a).level = 0;
}
}
}
}
}
public void RemoveFromBottom(int amount)
{
if (amount <= 0)
return;
wasChanged = true;
int t = amount > W * 4 ? 4 : amount / 4 / W + 1;
fixed (TileMapElement* ptrmap = tileMap)
{
while (true)//for if t < 4 and not enough after all passes
{
for (int y = H - 1; y >= 0; y--)
for (int x = 0; x < W; x++)
{
if ((*(a = ptrmap + y + x * H)).Free && (*a).level > 0)
{
if (t >= amount && (*a).level >= amount)
{
(*a).level -= amount;
return;
}
else
{
amount -= t;
(*a).level -= t;
}
}
}
}
}
}
public int GetHeightAt(int x)
{
if (x < 0)
x = 0;
if (x >= W)
x = W - 1;
fixed (TileMapElement* ptrmap = tileMap)
{
int h = 0;
for (int y = H - 1; y >= 0; y--)
{
if ((*(a = ptrmap + y + x * H)).Free && (*a).level == 4)
h++;
else
return h;
}
return h;
}
}
