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#include "common.hpp"
namespace world {
sector_index_t::sector_index_t ()
{
}
sector_index_t::sector_index_t (int64_t x_, int64_t y_)
{
x = x_;
y = y_;
}
bool sector_index_t::operator<(sector_index_t B) const
{
if (x < B.x)
return true;
if (x > B.x)
return false;
if (y < B.y)
return true;
return false;
}
world_t::world_t(void)
{
prng.seed(124);
perlin.generate(&prng, 32);
}
void world_t::generate(sector_t *sector, sector_index_t index)
{
sector->bounds.left = index.x * SECTOR_SIZE;
sector->bounds.top = index.y * SECTOR_SIZE;
sector->bounds.width = SECTOR_SIZE;
sector->bounds.height = SECTOR_SIZE;
std::cout << "generating (" << index.x << ", " << index.y << ")\n";
for (ssize_t ly = 0; ly < SECTOR_SIZE; ly++)
for (ssize_t lx = 0; lx < SECTOR_SIZE; lx++) {
ssize_t x, y;
float noise;
x = index.x * SECTOR_SIZE + lx;
y = index.y * SECTOR_SIZE + ly;
noise = perlin.get(x, y, 30.0f) * 0.6f +
perlin.get(x, y, 15.0f) * 0.25f +
perlin.get(x, y, 7.0f) * 0.1f +
perlin.get(x, y, 3.0f) * 0.05f;
sector->tiles[ly * SECTOR_SIZE + lx].type =
(noise + 1) * 100;
}
sector->empty = false;
}
sector_t *world_t::get_sector(sector_index_t index)
{
sector_t *sector;
sector = §ors[index];
if (sector->empty)
generate(sector, index);
return sector;
}
tile_t *world_t::get_tile(ssize_t x, ssize_t y)
{
sector_index_t index;
sector_t *sector;
ssize_t tx, ty;
index.x = divide_rmi(x, (ssize_t)SECTOR_SIZE, &tx);
index.y = divide_rmi(y, (ssize_t)SECTOR_SIZE, &ty);
sector = get_sector(index);
return sector->tiles + ty * SECTOR_SIZE + tx;
}
static sector_index_t get_index(float x, float y)
{
return sector_index_t(floor(x), floor(y));
}
void entity_t::link_to_sector(sector_t *sector)
{
parents.push_back(sector);
sector->ents.insert(this);
}
void entity_t::link(world_t *world)
{
sector_index_t base;
sector_t *sector;
ssize_t dx, dy;
// An entity gets linked to at least one sector.
base = get_index(bounds.left, bounds.top);
sector = world->get_sector(base);
link_to_sector(sector);
// There might be more, though.
//for (dy = 0; dy <
}
void entity_t::unlink(void)
{
for (sector_t *sector : parents)
sector->ents.erase(sector->ents.find(this));
parents.clear();
parent_world = nullptr;
}
} // namespace world
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