public static void calculateFOV(Level level)
{
level.setLit(level.getHeroLocation(), 0);
scanOctant1(level, level.getHeroLocation(), 1, 1, 0);
scanOctant2(level, level.getHeroLocation(), 1, 1, 0);
scanOctant3(level, level.getHeroLocation(), 1, 1, 0);
scanOctant4(level, level.getHeroLocation(), 1, 1, 0);
scanOctant5(level, level.getHeroLocation(), 1, 1, 0);
scanOctant6(level, level.getHeroLocation(), 1, 1, 0);
scanOctant7(level, level.getHeroLocation(), 1, 1, 0);
scanOctant8(level, level.getHeroLocation(), 1, 1, 0);
}
private static void scanOctant1(Level level, Location heroLocation, int depth, double startSlope, double endSlope)
{
if (depth >= Hero.MAX_SIGHT_DISTANCE)
{
return;
}
int y = heroLocation.y - depth;
int x = heroLocation.x - (int)(startSlope * depth);
while (getSlope(x, y, heroLocation.x, heroLocation.y, false) >= endSlope)
{
if (level.blocksSight(new Location(x, y)))
{
if (!level.blocksSight(new Location(x - 1, y)))
{
double newEndSlope = getSlope(x - 0.5, y + 0.5, heroLocation.x, heroLocation.y, false);
scanOctant1(level, heroLocation, depth + 1, startSlope, newEndSlope);
}
}
else
{
if (level.blocksSight(new Location(x - 1, y)))
{
startSlope = getSlope(x - 0.5, y - 0.5, heroLocation.x, heroLocation.y, false);
}
}
level.setLit(new Location(x, y), 0);
x++;
}
x--;
if (depth < Hero.MAX_SIGHT_DISTANCE && !level.blocksSight(new Location(x, y)))
{
scanOctant1(level, heroLocation, depth + 1, startSlope, endSlope);
}
}
private static void initLighting(Level level, Rect bounds)
{
for (int x = bounds.x1; x <= bounds.x2; x++)
{
for (int y = bounds.y1; y <= bounds.y2; y++)
{
if (isDark(level, new Location(x, y)))
{
level.setLit(new Location(x, y), Entity.LIT_FULL_DARK);
}
}
}
}
