35 lines
919 B
C++
35 lines
919 B
C++
#include "Lightmap.hpp"
|
|
|
|
#include "util/data_io.hpp"
|
|
|
|
#include <cassert>
|
|
#include <cstring>
|
|
|
|
void Lightmap::set(const Lightmap* lightmap) {
|
|
set(lightmap->map);
|
|
}
|
|
|
|
void Lightmap::set(const light_t* map) {
|
|
std::memcpy(this->map, map, sizeof(light_t) * CHUNK_VOL);
|
|
}
|
|
|
|
static_assert(sizeof(light_t) == 2, "replace dataio calls to new light_t");
|
|
|
|
std::unique_ptr<ubyte[]> Lightmap::encode() const {
|
|
auto buffer = std::make_unique<ubyte[]>(LIGHTMAP_DATA_LEN);
|
|
for (uint i = 0; i < CHUNK_VOL; i+=2) {
|
|
buffer[i/2] = ((map[i] >> 12) & 0xF) | ((map[i+1] >> 8) & 0xF0);
|
|
}
|
|
return buffer;
|
|
}
|
|
|
|
std::unique_ptr<light_t[]> Lightmap::decode(const ubyte* buffer) {
|
|
auto lights = std::make_unique<light_t[]>(CHUNK_VOL);
|
|
for (uint i = 0; i < CHUNK_VOL; i+=2) {
|
|
ubyte b = buffer[i/2];
|
|
lights[i] = ((b & 0xF) << 12);
|
|
lights[i+1] = ((b & 0xF0) << 8);
|
|
}
|
|
return lights;
|
|
}
|