public static int FindIntersectingSolids(AABB bb, Level lvl, ref AABB[] aabbs)
{
Vec3S32 min = bb.BlockMin, max = bb.BlockMax;
int volume = (max.X - min.X + 1) * (max.Y - min.Y + 1) * (max.Z - min.Z + 1);
if (volume > aabbs.Length)
{
aabbs = new AABB[volume];
}
int count = 0;
for (int y = min.Y; y <= max.Y; y++)
{
for (int z = min.Z; z <= max.Z; z++)
{
for (int x = min.X; x <= max.X; x++)
{
BlockID block = lvl.GetBlock((ushort)x, (ushort)y, (ushort)z);
AABB blockBB = lvl.blockAABBs[block];
blockBB.Min.X += x * 32; blockBB.Min.Y += y * 32; blockBB.Min.Z += z * 32;
blockBB.Max.X += x * 32; blockBB.Max.Y += y * 32; blockBB.Max.Z += z * 32;
if (!AABB.Intersects(ref bb, ref blockBB))
{
continue;
}
BlockDefinition def = lvl.GetBlockDef(block);
bool solid = false;
if (def != null)
{
solid = CollideType.IsSolid(def.CollideType);
}
else
{
solid = block == Block.Invalid || !Block.Walkthrough(Block.Convert(block));
}
if (!solid)
{
continue;
}
aabbs[count] = blockBB;
count++;
}
}
}
return(count);
}
public static bool IntersectsSolidBlocks(AABB bb, Level lvl)
{
Vec3S32 min = bb.BlockMin, max = bb.BlockMax;
for (int y = min.Y; y <= max.Y; y++)
{
for (int z = min.Z; z <= max.Z; z++)
{
for (int x = min.X; x <= max.X; x++)
{
ushort xP = (ushort)x, yP = (ushort)y, zP = (ushort)z;
ExtBlock block = lvl.GetBlock(xP, yP, zP);
AABB blockBB = lvl.blockAABBs[block.Index].Offset(x * 32, y * 32, z * 32);
if (!AABB.Intersects(ref bb, ref blockBB))
{
continue;
}
BlockDefinition def = lvl.GetBlockDef(block);
if (def != null)
{
if (CollideType.IsSolid(def.CollideType))
{
return(true);
}
}
else if (block.BlockID == Block.Invalid)
{
if (y < lvl.Height)
{
return(true);
}
}
else if (!Block.Walkthrough(Block.Convert(block.BlockID)))
{
return(true);
}
}
}
}
return(false);
}
public static AABB Make(Vec3S32 pos, Vec3S32 size)
{
return(new AABB(pos.X - size.X / 2, pos.Y, pos.Z - size.Z / 2,
pos.X + size.X / 2, pos.Y + size.Y, pos.Z + size.Z / 2));
}
public AABB(Vec3S32 min, Vec3S32 max)
{
Min = min;
Max = max;
}
