File size: 8,348 Bytes
3ce1a40 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 | #include "assets.h"
#include "../core/core.h"
#include <cstdio>
#include <cstring>
#include <sstream>
namespace unify {
const char* asset_type_name(AssetType t) {
switch (t) {
case AssetType::Texture: return "texture";
case AssetType::Audio: return "audio";
case AssetType::Music: return "music";
case AssetType::Script: return "script";
case AssetType::Prefab: return "prefab";
case AssetType::Map: return "map";
case AssetType::Kernel: return "kernel";
case AssetType::Material: return "material";
case AssetType::Font: return "font";
case AssetType::SaveData: return "save";
}
return "?";
}
bool read_file(const std::string& path, std::vector<uint8_t>& out) {
FILE* f = std::fopen(path.c_str(), "rb");
if (!f) return false;
out.clear();
uint8_t buf[65536];
size_t n;
while ((n = std::fread(buf, 1, sizeof buf, f)) > 0) out.insert(out.end(), buf, buf + n);
std::fclose(f);
return true;
}
bool write_file(const std::string& path, const std::vector<uint8_t>& data) {
std::string tmp = path + ".tmp";
FILE* f = std::fopen(tmp.c_str(), "wb");
if (!f) return false;
bool ok = std::fwrite(data.data(), 1, data.size(), f) == data.size();
ok = std::fclose(f) == 0 && ok;
return ok && std::rename(tmp.c_str(), path.c_str()) == 0; // atomic replace: no torn save files
}
AssetManager::AssetManager(RenderDevice& device, std::string root, size_t budget) : device_(device), root_(std::move(root)), alloc_(budget) {}
AssetManager::~AssetManager() {
for (uint32_t i = 0; i < handles_.capacity(); i++)
if (AssetHandle h = handles_.at(i)) free_payload(records_[i]);
}
std::string AssetManager::path_for(AssetType type, const std::string& name) const {
static const std::map<AssetType, const char*> ext = {
{AssetType::Texture, ".qoi"}, {AssetType::Audio, ".wav"}, {AssetType::Music, ".wav"}, {AssetType::Script, ".lua"},
{AssetType::Prefab, ".lua"}, {AssetType::Map, ".map"}, {AssetType::Kernel, ".cu"}, {AssetType::Material, ".mat"},
{AssetType::Font, ""}, {AssetType::SaveData, ".usav"}};
return root_ + "/" + name + ext.at(type);
}
AssetHandle AssetManager::find(const std::string& name) const {
auto it = by_name_.find(name);
return it == by_name_.end() ? AssetHandle{} : it->second;
}
AssetHandle AssetManager::load(AssetType type, const std::string& name) {
auto it = by_name_.find(name);
if (it != by_name_.end() && handles_.valid(it->second)) {
AssetRecord& r = records_[it->second.index()];
if (r.type != type) { UNIFY_LOG_ERROR("ASSETS", "'%s' already loaded as %s", name.c_str(), asset_type_name(r.type)); return {}; }
r.refs++;
return it->second; // cached: no duplicate load
}
AssetRecord rec;
rec.name = name;
rec.type = type;
rec.path = path_for(type, name);
rec.refs = 1;
if (!load_payload(rec)) {
UNIFY_LOG_ERROR("ASSETS", "failed to load %s '%s' (%s)", asset_type_name(type), name.c_str(), rec.path.c_str());
return {};
}
AssetHandle h = handles_.allocate();
if (h.index() >= records_.size()) records_.resize(h.index() + 1);
records_[h.index()] = std::move(rec);
by_name_[name] = h;
return h;
}
bool AssetManager::acquire(AssetHandle h) {
if (!valid(h)) return false;
records_[h.index()].refs++;
return true;
}
bool AssetManager::release(AssetHandle h) {
if (!valid(h)) return false;
AssetRecord& r = records_[h.index()];
if (--r.refs > 0) return true;
free_payload(r);
by_name_.erase(r.name);
r = AssetRecord{};
handles_.release(h);
return true;
}
static bool parse_map(const std::string& text, TileMap& m) {
std::istringstream in(text);
std::string line;
while (std::getline(in, line)) {
if (!line.empty() && line.back() == '\r') line.pop_back();
if (line.rfind("//", 0) == 0) continue; // comment ('#' is a tile character)
if (line.rfind("tile_size ", 0) == 0) { m.tile_size = std::stof(line.substr(10)); continue; }
m.rows.push_back(line);
m.width = std::max(m.width, int(line.size()));
}
for (auto& r : m.rows) r.resize(size_t(m.width), ' ');
m.height = int(m.rows.size());
return m.height > 0;
}
bool AssetManager::load_payload(AssetRecord& r) {
switch (r.type) {
case AssetType::Texture: {
Image img;
if (!load_image(r.path, img)) return false;
r.texture.texture = device_.create_texture(img);
r.texture.width = img.width;
r.texture.height = img.height;
r.texture.atlas.regions.push_back({"", {0, 0, img.width, img.height}});
// Optional atlas sidecar: "name x y w h" per line.
std::vector<uint8_t> meta;
std::string atlas_path = r.path.substr(0, r.path.size() - 4) + ".atlas";
if (read_file(atlas_path, meta)) {
std::istringstream in(std::string(meta.begin(), meta.end()));
AtlasRegion reg;
while (in >> reg.name >> reg.rect.x >> reg.rect.y >> reg.rect.w >> reg.rect.h) r.texture.atlas.regions.push_back(reg);
}
r.bytes = img.pixels.size();
return bool(r.texture.texture);
}
case AssetType::Audio: {
r.clip = std::make_shared<AudioClip>();
r.clip->name = r.name;
if (!r.clip->load_wav(r.path)) return false;
r.bytes = r.clip->samples.size() * sizeof(float);
return true;
}
case AssetType::Music: {
// Streamed: validate the header only. Nothing but the header is read here.
WavDecoder probe;
if (!probe.open(r.path)) return false;
r.bytes = 0;
return true;
}
case AssetType::Font: return true;
case AssetType::Script: case AssetType::Prefab: case AssetType::Map: case AssetType::Kernel: case AssetType::Material: case AssetType::SaveData: {
std::vector<uint8_t> data;
if (!read_file(r.path, data)) return false;
r.blob = alloc_.allocate(data.size() + 1, asset_type_name(r.type));
if (!r.blob) { UNIFY_LOG_ERROR("ASSETS", "asset budget exhausted loading '%s'", r.name.c_str()); return false; }
std::memcpy(r.blob, data.data(), data.size());
r.blob[data.size()] = 0;
r.text.assign(reinterpret_cast<char*>(r.blob), data.size());
r.bytes = data.size() + 1;
if (r.type == AssetType::Map && !parse_map(r.text, r.map)) return false;
if (r.type == AssetType::Material) {
std::istringstream in(r.text);
std::string key;
while (in >> key) {
if (key == "blend") {
std::string v; in >> v;
r.material.blend = v == "additive" ? BlendMode::Additive : v == "multiply" ? BlendMode::Multiply : v == "opaque" ? BlendMode::Opaque : BlendMode::Alpha;
} else if (key == "tint") {
int cr, cg, cb, ca; in >> cr >> cg >> cb >> ca;
r.material.tint = {uint8_t(cr), uint8_t(cg), uint8_t(cb), uint8_t(ca)};
}
}
}
return true;
}
}
return false;
}
void AssetManager::free_payload(AssetRecord& r) {
if (r.type == AssetType::Texture && r.texture.texture) device_.destroy_texture(r.texture.texture);
if (r.blob) { alloc_.free(r.blob); r.blob = nullptr; }
r.clip.reset();
}
std::shared_ptr<StreamingSource> AssetManager::open_stream(AssetHandle h) {
const AssetRecord* r = get(h);
if (!r || r->type != AssetType::Music) return nullptr;
auto s = std::make_shared<StreamingSource>();
s->name = r->name;
if (!s->open(r->path)) return nullptr;
return s;
}
size_t AssetManager::resident_bytes() const {
size_t n = 0;
for (uint32_t i = 0; i < handles_.capacity(); i++) if (handles_.at(i)) n += records_[i].bytes;
return n;
}
std::vector<std::string> AssetManager::loaded_names() const {
std::vector<std::string> out;
for (auto& kv : by_name_) out.push_back(kv.first);
return out;
}
} // namespace unify
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