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- #include "Chunk.h"
-
- #include <SFML/System/Clock.hpp>
- #include <zlib.h>
-
- #include "World.h"
- #include "Game.h"
- #include "Win.h"
-
- namespace Swan {
-
- sf::Uint8 *Chunk::renderbuf = new sf::Uint8[CHUNK_WIDTH * TILE_SIZE * CHUNK_HEIGHT * TILE_SIZE * 4];
-
- Tile::ID *Chunk::getTileData() {
- keepActive();
- return (Tile::ID *)data_.get();
- }
-
- Tile::ID Chunk::getTileID(RelPos pos) {
- return getTileData()[pos.y * CHUNK_WIDTH + pos.x];
- }
-
- void Chunk::setTileID(RelPos pos, Tile::ID id) {
- getTileData()[pos.y * CHUNK_WIDTH + pos.x] = id;
- }
-
- void Chunk::drawBlock(RelPos pos, const Tile &t) {
- keepActive();
-
- //visuals_->tex_.update(*t.image_, pos.x * TILE_SIZE, pos.y * TILE_SIZE);
- visuals_->dirty_ = true;
- }
-
- void Chunk::compress() {
- if (isCompressed())
- return;
-
- sf::Clock clock;
-
- // We only need a fixed-length temp buffer;
- // if the compressed data gets too big, there's no point in compressing
- uint8_t dest[CHUNK_WIDTH * CHUNK_HEIGHT * sizeof(Tile::ID)];
-
- uLongf destlen = sizeof(dest);
- int ret = compress2(
- (Bytef *)dest, &destlen,
- (Bytef *)data_.get(), CHUNK_WIDTH * CHUNK_HEIGHT * sizeof(Tile::ID),
- Z_BEST_COMPRESSION);
-
- if (ret == Z_OK) {
- data_.reset(new uint8_t[destlen]);
- memcpy(data_.get(), dest, destlen);
-
- visuals_.reset();
- compressed_size_ = destlen;
-
- fprintf(stderr, "Compressed chunk %i,%i from %lu bytes to %lu bytes in %.3fs.\n",
- pos_.x, pos_.y, CHUNK_WIDTH * CHUNK_HEIGHT * sizeof(Tile::ID), destlen,
- clock.getElapsedTime().asSeconds());
- } else if (ret == Z_BUF_ERROR) {
- fprintf(stderr, "Didn't compress chunk %i,%i because compressing it would've made it bigger.\n",
- pos_.x, pos_.y);
- } else {
- fprintf(stderr, "Chunk compression error: %i (Out of memory?)\n", ret);
- }
- }
-
- void Chunk::decompress() {
- if (!isCompressed())
- return;
-
- sf::Clock clock;
-
- uint8_t *dest = new uint8_t[CHUNK_WIDTH * CHUNK_HEIGHT * sizeof(Tile::ID)];
- uLongf destlen = CHUNK_WIDTH * CHUNK_HEIGHT * sizeof(Tile::ID);
- int ret = uncompress(
- dest, &destlen,
- (Bytef *)data_.get(), compressed_size_);
-
- if (ret != Z_OK) {
- fprintf(stderr, "Decompressing chunk failed: %i\n", ret);
- delete[] dest;
- abort();
- }
-
- data_.reset(dest);
- visuals_.reset(new Visuals());
- visuals_->tex_.create(CHUNK_WIDTH * TILE_SIZE, CHUNK_HEIGHT * TILE_SIZE);
- visuals_->sprite_ = sf::Sprite();
- visuals_->dirty_ = true;
- need_render_ = true;
- fprintf(stderr, "Decompressed chunk %i,%i from %li bytes to %lu bytes in %.3fs.\n",
- pos_.x, pos_.y, compressed_size_, CHUNK_WIDTH * CHUNK_HEIGHT * sizeof(Tile::ID),
- clock.getElapsedTime().asSeconds());
- compressed_size_ = -1;
- }
-
- void Chunk::render(const Context &ctx) {
- Tile::ID prevID = Tile::INVALID_ID;
- Tile *tile = ctx.game.invalid_tile_.get();
-
- for (int x = 0; x < CHUNK_WIDTH; ++x) {
- for (int y = 0; y < CHUNK_HEIGHT; ++y) {
- Tile::ID id = getTileID(RelPos(x, y));
- if (id != prevID) {
- prevID = id;
- tile = &ctx.world.getTileByID(id);
- }
-
- const sf::Uint8 *imgptr = NULL;
- //const sf::Uint8 *imgptr = tile->image->getPixelsPtr();
- for (int imgy = 0; imgy < TILE_SIZE; ++imgy) {
- int pixx = x * TILE_SIZE;
- int pixy = y * TILE_SIZE + imgy;
- sf::Uint8 *pix = renderbuf +
- pixy * CHUNK_WIDTH * TILE_SIZE * 4 +
- pixx * 4;
- memcpy(pix, imgptr + imgy * TILE_SIZE * 4, TILE_SIZE * 4);
- }
- }
- }
-
- visuals_->tex_.update(renderbuf, CHUNK_WIDTH * TILE_SIZE, CHUNK_HEIGHT * TILE_SIZE, 0, 0);
- visuals_->dirty_ = true;
- }
-
- void Chunk::draw(const Context &ctx, Win &win) {
- if (isCompressed())
- return;
-
- if (need_render_) {
- render(ctx);
- need_render_ = false;
- }
-
- if (visuals_->dirty_) {
- visuals_->sprite_.setTexture(visuals_->tex_);
- visuals_->dirty_ = false;
- }
-
- win.setPos(pos_ * Vec2i(CHUNK_WIDTH, CHUNK_HEIGHT));
- win.draw(visuals_->sprite_);
- }
-
- void Chunk::tick(float dt) {
- if (deactivate_timer_ <= 0)
- return;
-
- deactivate_timer_ -= dt;
- if (deactivate_timer_ <= 0) {
- compress();
- }
- }
-
- bool Chunk::keepActive() {
- bool wasActive = isActive();
- deactivate_timer_ = DEACTIVATE_INTERVAL;
-
- if (wasActive)
- return false;
-
- decompress();
- return true;
- }
-
- }
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