static bool
_try_door_nolock (world &w, int x, int y, int z, block_data bd)
{
if (bd.ex != BE_DOOR) return false;
w.queue_update_nolock (x, y, z, BT_AIR);
w.queue_physics (x, y, z, bd.id | (bd.meta << 12), nullptr, DOOR_TICK_RATE, nullptr, _door_tick);
return true;
}
void
_door_tick (world &w, int x, int y, int z, int data, std::minstd_rand& rnd)
{
int id = data & 0xFFF;
int meta = (data >> 12) & 0xF;
int elapsed = data >> 16;
if (elapsed == 0)
{
_try_door_lock (w, x - 1, y, z, w.get_block (x - 1, y, z));
_try_door_lock (w, x + 1, y, z, w.get_block (x + 1, y, z));
_try_door_lock (w, x, y, z - 1, w.get_block (x, y, z - 1));
_try_door_lock (w, x, y, z + 1, w.get_block (x, y, z + 1));
if (y > 0) _try_door_lock (w, x, y - 1, z, w.get_block (x, y - 1, z));
if (y < 255) _try_door_lock (w, x, y + 1, z, w.get_block (x, y + 1, z));
}
++ elapsed;
if (elapsed == (5 * 4)) // 4 seconds
w.queue_update (x, y, z, id, meta, BE_DOOR);
else
w.queue_physics (x, y, z, id | (meta << 12) | (elapsed << 16),
nullptr, DOOR_TICK_RATE, nullptr, _door_tick);
}
void
shark::tick (world &w, int x, int y, int z, int data, void *ptr,
std::minstd_rand& rnd)
{
if (y <= 0)
{ w.queue_update (x, y, z, BT_AIR); return; }
if (w.get_final_block (x, y, z).id != BT_SHARK)
return;
int below = w.get_final_block (x, y - 1, z).id;
if (below == BT_AIR || (_is_water (below) && (w.get_final_block (x, y + 1, z).id == BT_AIR)))
{
w.queue_update (x, y, z, _sur_water (w, x, y, z));
w.queue_update (x, y - 1, z, BT_SHARK);
}
else
{
int nx = x, ny = y, nz = z;
// find closest player
player *target = nullptr;
w.get_players ().all (
[x, y, z, &target] (player *pl)
{
double dx = x - pl->pos.x;
double dy = y - pl->pos.y;
double dz = z - pl->pos.z;
double dm = dx*dx + dy*dy + dz*dz;
if (dm > 6*6)
return;
if (!target)
target = pl;
else
{
double pdx = x - target->pos.x;
double pdy = y - target->pos.y;
double pdz = z - target->pos.z;
if (dm < (pdx*pdx + pdy*pdy + pdz*pdz))
target = pl;
}
});
if (!target)
{
// move around in a random fashion
std::uniform_int_distribution<> dis (0, 5);
switch (dis (rnd))
{
case 0: -- ny; break;
case 1: ++ ny; break;
case 2: -- nz; break;
case 3: ++ nz; break;
case 4: -- nx; break;
case 5: ++ nx; break;
}
}
else
{
if (x < target->pos.x)
{
if (_is_water (w.get_final_block (x + 1, ny, nz).id))
++ nx;
}
else if (x > target->pos.x)
{
if (_is_water (w.get_final_block (x - 1, ny, nz).id))
-- nx;
}
if (y < target->pos.y)
{
if (_is_water (w.get_final_block (nx, y + 1, nz).id))
++ ny;
}
else if (y > target->pos.y)
{
if (_is_water (w.get_final_block (nx, y - 1, nz).id))
-- ny;
}
if (z < target->pos.z)
{
if (_is_water (w.get_final_block (nx, ny, z + 1).id))
++ nz;
}
else if (z > target->pos.z)
{
if (_is_water (w.get_final_block (nx, ny, z - 1).id))
-- nz;
}
}
int prev = _try_block (w, nx, ny, nz);
if (prev == -1)
w.queue_physics (x, y, z, 0, nullptr, this->tick_rate ());
else
w.queue_update (x, y, z, prev, 0, 0, 0, nullptr, nullptr, false);
}
}
