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#include "server/movement.hh"
// Gets blocks from chunks, returning nullopt if it doesn't exist.
static std::optional<shared::world::block>
get_block(const shared::math::coords& pos, server::resources::chunk_map& chunks,
const glm::ivec3& block_pos) noexcept {
const auto find_it = chunks.find(pos);
if (find_it == std::end(chunks)) {
return std::nullopt;
}
auto& chunk_data = find_it->second;
if (!chunk_data->has_initialised()) {
return std::nullopt;
}
return chunk_data->get_chunk().get_block(block_pos);
}
static std::optional<std::vector<shared::movement::blockinfo>>
make_blockinfos(server::client& client,
server::resources::chunk_map& chunks) noexcept {
std::vector<shared::movement::blockinfo> blockinfos;
constexpr int width = shared::movement::move_width;
constexpr int height = shared::movement::move_height;
for (int x = -width; x <= width; ++x) {
for (int y = -height; y <= height; ++y) {
for (int z = -width; z <= width; ++z) {
const glm::ivec3 rel_pos =
glm::ivec3{x, y, z} +
glm::ivec3{client.get_player().local_pos};
if (rel_pos.y < 0 ||
rel_pos.y >= shared::world::chunk::HEIGHT) {
continue;
}
const shared::math::coords norm_chunk_pos =
shared::world::chunk::get_normalised_chunk(
client.get_player().chunk_pos, rel_pos.x, rel_pos.z);
const glm::ivec3 norm_pos =
shared::world::chunk::get_normalised_coords(rel_pos);
const auto block = get_block(norm_chunk_pos, chunks, norm_pos);
if (!block.has_value()) {
return std::nullopt;
}
const glm::vec3 pos =
glm::vec3{rel_pos} - client.get_player().local_pos;
const shared::movement::aabb aabb = {
.min = glm::vec3{0.0f, 0.0f, 0.0f} + pos,
.max = glm::vec3{1.0f, 1.0f, 1.0f} + pos};
blockinfos.push_back(
shared::movement::blockinfo{.block = *block,
.aabb = aabb,
.chunk_pos = norm_chunk_pos,
.pos = norm_pos});
}
}
}
return blockinfos;
}
void server::movement::move(server::client& client,
server::resources::chunk_map& chunks) noexcept {
if (!client.has_initialised()) {
return;
}
const auto blockinfos = make_blockinfos(client, chunks);
if (!blockinfos.has_value()) {
return;
}
const float deltatime = 1.0f / static_cast<float>(server::state.tickrate);
shared::movement::move(client.get_player(), *blockinfos, deltatime);
}
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