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#include "server/movement/movement.hh"
namespace server {
namespace movement {
// Gets blocks from chunks, returning nullopt if it doesn't exist.
static std::optional<shared::world::block>
maybe_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<shared::movement::blocks>
maybe_make_blocks(server::client& client,
server::resources::chunk_map& chunks) noexcept {
shared::movement::blocks blocks;
const auto xy = shared::movement::get_move_xy(server::state.tickrate,
client.get_player());
for (int x = -xy.x; x <= xy.x; ++x) {
for (int y = -xy.y; y <= xy.y; ++y) {
for (int z = -xy.x; z <= xy.x; ++z) {
const glm::ivec3 rel_pos =
glm::ivec3{x, y, z} +
glm::ivec3{client.get_player().get_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().get_chunk_pos(), rel_pos.x,
rel_pos.z);
const glm::ivec3 norm_pos =
shared::world::chunk::get_normalised_coords(rel_pos);
const auto block =
maybe_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().get_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};
blocks.push_back(
shared::movement::block{.block = *block,
.aabb = aabb,
.chunk_pos = norm_chunk_pos,
.pos = norm_pos});
}
}
}
return blocks;
}
void move(client& client, resources::chunk_map& chunks) noexcept {
if (!client.has_initialised()) {
return;
}
const auto blocks = maybe_make_blocks(client, chunks);
if (!blocks.has_value()) {
return;
}
auto& player = client.get_player();
const shared::animate result =
shared::movement::move(player, *blocks, state.tickrate);
player.get_mutable_velocity() = result.get_velocity();
player.get_mutable_local_pos() = result.get_local_pos();
player.get_mutable_chunk_pos() = result.get_chunk_pos();
}
} // namespace movement
} // namespace server
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