public static bool HasLineOfSight(Board board, int x0, int y0, int x1, int y1, SmartEntity troop, SmartEntity target, out BoardCell hitShieldCell)
{
bool overWalls = troop.ShooterComp.ShooterVO.OverWalls;
bool isFlying = troop.TroopComp.TroopType.IsFlying;
hitShieldCell = null;
int num = (x1 <= x0) ? -1 : 1;
int num2 = (x1 - x0) * num;
int num3 = (y1 <= y0) ? -1 : 1;
int num4 = (y1 - y0) * num3;
if (num2 > num4)
{
int num5 = num4 * 2 - num2;
int num6 = num4 * 2;
int num7 = (num4 - num2) * 2;
int num8 = x0;
int num9 = y0;
while (num8 != x1)
{
if (num5 <= 0)
{
num5 += num6;
num8 += num;
}
else
{
num5 += num7;
num8 += num;
num9 += num3;
}
BoardCell cellAt = board.GetCellAt(num8, num9);
if (BoardUtils.UpdateHitShieldCellAndReturnIfItIsFromTarget(target, cellAt, ref hitShieldCell))
{
return(true);
}
if (num8 == x1)
{
return(true);
}
if (BoardUtils.IsCellBlockingLineOfSight(cellAt, overWalls, isFlying))
{
return(BoardUtils.CheckIfCellContainsTarget(target, cellAt));
}
}
}
else
{
int num10 = num2 * 2 - num4;
int num11 = num2 * 2;
int num12 = (num2 - num4) * 2;
int num13 = x0;
int num14 = y0;
while (num14 != y1)
{
if (num10 <= 0)
{
num10 += num11;
num14 += num3;
}
else
{
num10 += num12;
num13 += num;
num14 += num3;
}
BoardCell cellAt = board.GetCellAt(num13, num14);
if (BoardUtils.UpdateHitShieldCellAndReturnIfItIsFromTarget(target, cellAt, ref hitShieldCell))
{
return(true);
}
if (num14 == y1)
{
return(true);
}
if (BoardUtils.IsCellBlockingLineOfSight(cellAt, overWalls, isFlying))
{
return(BoardUtils.CheckIfCellContainsTarget(target, cellAt));
}
}
}
return(true);
}
public unsafe static long $Invoke5(long instance, long *args)
{
return(GCHandledObjects.ObjectToGCHandle(BoardUtils.IsCellBlockingLineOfSight((BoardCell <Entity>)GCHandledObjects.GCHandleToObject(*args), *(sbyte *)(args + 1) != 0, *(sbyte *)(args + 2) != 0)));
}