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#include "common.hpp"
namespace world {
sector_index_t sector_index_at(v2f_t x)
{
return sector_index_t(floor(x[0] / SECTOR_SIZE),
floor(x[1] / SECTOR_SIZE));
}
world_t::world_t(void)
{
prng.seed(124);
perlin.generate(&prng, 32);
}
void world_t::generate_tile(tile_t *tile, tile_index_t x)
{
float waterlevel, height;
waterlevel = perlin.get(x, 1000.0f) * 0.3f +
perlin.get(x, 500.0f) * 0.1f;
height = perlin.get(x, 60.0f) * 0.6f +
perlin.get(x, 30.0f) * 0.25f +
perlin.get(x, 14.0f) * 0.1f +
perlin.get(x, 6.0f) * 0.05f;
if (height < waterlevel - 0.2f)
tile->type = -1;
else if (height < waterlevel)
tile->type = 0;
else if (height < waterlevel + 0.05f)
tile->type = 1;
else {
if (perlin.get(x, 5.0f) > 0.0f)
tile->type = 3;
else
tile->type = 2;
}
}
void world_t::generate(sector_t *sector, sector_index_t index)
{
sector->index = index;
sector->bounds.left = index[0] * SECTOR_SIZE;
sector->bounds.top = index[1] * SECTOR_SIZE;
sector->bounds.width = SECTOR_SIZE;
sector->bounds.height = SECTOR_SIZE;
std::cout << "generating " << index << "\n";
for (ssize_t ly = 0; ly < SECTOR_SIZE; ly++)
for (ssize_t lx = 0; lx < SECTOR_SIZE; lx++)
generate_tile(sector->tiles + ly * SECTOR_SIZE + lx,
tile_index_t(index[0] * SECTOR_SIZE + lx,
index[1] * SECTOR_SIZE + ly));
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[0] = divide_rmi(x, (ssize_t)SECTOR_SIZE, &tx);
index[1] = divide_rmi(y, (ssize_t)SECTOR_SIZE, &ty);
sector = get_sector(index);
return sector->tiles + ty * SECTOR_SIZE + tx;
}
std::list<sector_t*> world_t::get_sectors(sf::FloatRect rect)
{
sector_index_t base, upper;
std::list<sector_t*> list;
base = sector_index_at(v2f_t(rect.left, rect.top));
upper = sector_index_at(v2f_t(rect.left + rect.width, rect.top + rect.height));
for (int64_t y = base[1]; y <= upper[1]; y++)
for (int64_t x = base[0]; x <= upper[0]; x++) {
sector_index_t index(x, y);
list.push_back(get_sector(index));
}
return list;
}
std::list<entity_t*> world_t::get_render_entities(sf::FloatRect rect)
{
static size_t cookie = 0;
std::list<entity_t*> list;
cookie++;
for (sector_t *sector : get_sectors(rect))
for (entity_t *ent : sector->ents) {
if (ent->cookie == cookie)
continue;
if (!rect.intersects(ent->render_bounds))
continue;
ent->cookie = cookie;
list.push_back(ent);
}
return list;
}
std::list<entity_t*> world_t::get_entities(sf::FloatRect rect)
{
static size_t cookie = 0;
std::list<entity_t*> list;
cookie++;
for (sector_t *sector : get_sectors(rect))
for (entity_t *ent : sector->ents) {
if (ent->cookie == cookie)
continue;
if (!rect.intersects(ent->bounds))
continue;
ent->cookie = cookie;
list.push_back(ent);
}
return list;
}
void world_t::debug_point(sf::Vector2f point)
{
sector_index_t index = sector_index_at(point);
printf("sector (%zd, %zd)\n", index[0], index[1]);
}
void entity_t::link_to_sector(sector_t *sector)
{
parents.push_back(sector);
sector->ents.insert(this);
}
void entity_t::link(world_t *world)
{
//sf::FloatRect total_bounds;
float fx, fy;
sector_index_t base;
float xlip, ylip;
size_t xsecs, ysecs;
// TODO
//total.bounds.left = std::min(bounds.left, render_bounds.left);
//total.bounds.top = std::min(bounds.top, render_bounds.top);
//total.bounds.width = std::max(bounds.width, render_bounds.width);
//total.bounds.height = std::max(bounds.height, render_bounds.height);
fx = floor(bounds.left);
fy = floor(bounds.top);
base = sector_index_at(v2f_t(fx, fy));
xlip = bounds.left + bounds.width - (base[0] + 1) * SECTOR_SIZE;
ylip = bounds.top + bounds.height - (base[1] + 1) * SECTOR_SIZE;
if (xlip > 0.0f)
xsecs = ceil(xlip / SECTOR_SIZE) + 1;
else
xsecs = 1;
if (ylip > 0.0f)
ysecs = ceil(ylip / SECTOR_SIZE) + 1;
else
ysecs = 1;
for (int64_t y = 0; y < (int64_t)ysecs; y++)
for (int64_t x = 0; x < (int64_t)xsecs; x++) {
sector_index_t index = sector_index_at(v2f_t(base[0] + x, base[1] + y));
sector_t *sector;
sector = world->get_sector(index);
link_to_sector(sector);
}
}
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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