1 files changed, 143 insertions, 0 deletions

diff --git a/code/graphics/AssetManager.cpp b/code/graphics/AssetManager.cpp
new file mode 100644
index 0000000..1840c63
--- /dev/null
+++ b/code/graphics/AssetManager.cpp
@@ -0,0 +1,143 @@
+#include "AssetManager.hpp"
+
+const std::string pathToAssets = "./assets/";
+const std::string pathToObjects = pathToAssets + "objects/";
+const std::string pathToIndexFile = pathToAssets + "indexes/1.11.json";
+const std::string pathToAssetsMc = "./assetsMc/";
+
+const std::map<Asset::AssetType, std::string> assetTypeFileExtensions{
+        std::make_pair(Asset::AssetType::Texture, ".png"),
+        std::make_pair(Asset::AssetType::Lang, ".lang"),
+        std::make_pair(Asset::AssetType::Sound, ".ogg"),
+};
+
+AssetManager::AssetManager() {
+    std::ifstream indexFile(pathToIndexFile);
+    if (!indexFile) {
+        std::cerr << "Can't open file " << pathToIndexFile << std::endl;
+    }
+    nlohmann::json json = nlohmann::json::parse(indexFile)["objects"];
+    for (auto it = json.begin(); it != json.end(); ++it) {
+        size_t fileNameExtensionPos = -1;
+        std::string name = it.key();
+        Asset::AssetType type = Asset::Unknown;
+        for (auto &it:assetTypeFileExtensions) {
+            if ((fileNameExtensionPos = name.find(it.second)) != std::string::npos) {
+                type = it.first;
+                name = name.substr(0, fileNameExtensionPos);
+                break;
+            }
+        }
+        std::string hash = it.value()["hash"].get<std::string>();
+        size_t size = it.value()["size"].get<int>();
+        Asset asset{name, hash, Asset::AssetData(), size, type};
+        this->assets[name] = asset;
+    }
+}
+
+AssetManager::~AssetManager() {
+
+}
+
+Asset &AssetManager::GetAsset(std::string AssetName) {
+    if (instance().assets.find(AssetName) == instance().assets.end() || !instance().assets[AssetName].isParsed())
+        LoadAsset(AssetName);
+    return instance().assets[AssetName];
+}
+
+void AssetManager::LoadAsset(std::string AssetName) {
+    if (instance().assets.find(AssetName) != instance().assets.end() && instance().assets[AssetName].isParsed())
+        return;
+    std::string AssetFileName = GetPathToAsset(AssetName);
+    Asset &asset = instance().assets[AssetName];
+
+
+    if (asset.type == Asset::Texture) {
+        asset.data.texture = new Texture(AssetFileName,GL_CLAMP_TO_BORDER,GL_NEAREST);
+        //asset.data.texture.loadFromFile((asset.name + assetTypeFileExtensions.at(asset.type)));
+    }
+}
+
+std::string AssetManager::GetPathToAsset(std::string AssetName) {
+    if (instance().assets.find(AssetName) != instance().assets.end()){
+        auto it = instance().assets.find(AssetName);
+        return pathToObjects + std::string(instance().assets[AssetName].hash.c_str(), 2) + "/" +
+               instance().assets[AssetName].hash;
+    }
+
+    instance().assets[AssetName].hash="";
+    instance().assets[AssetName].type=Asset::AssetType::Texture;
+    instance().assets[AssetName].name=AssetName;
+    instance().assets[AssetName].size=0;
+    return pathToAssetsMc + "" + instance().assets[AssetName].name +
+           assetTypeFileExtensions.at(instance().assets[AssetName].type);
+}
+
+std::string AssetManager::GetAssetNameByBlockId(unsigned short id) {
+    std::string assetBase = "minecraft/textures/blocks/";
+    std::string textureName;
+    switch (id){
+        case 0:
+            textureName="air";
+            break;
+        case 1:
+            textureName="stone";
+            break;
+        case 2:
+            textureName="grass";
+            break;
+        case 3:
+            textureName="dirt";
+            break;
+        case 16:
+            textureName="coal_ore";
+            break;
+        case 17:
+            textureName="log_oak";
+            break;
+        case 31:
+            textureName="air";
+            break;
+        default:
+            //std::cout<<id<<std::endl;
+            textureName="beacon";
+            break;
+    }
+    return assetBase+textureName;
+}
+
+bool Asset::isParsed() {
+    switch (type) {
+        case Unknown:
+            return false;
+            break;
+        case Texture:
+            return this->data.texture != nullptr;
+            break;
+        case Sound:
+            return false;
+            break;
+        case Model:
+            return false;
+            break;
+        case Lang:
+            return false;
+            break;
+    }
+}
+
+Asset::~Asset() {
+    switch (type) {
+        case Unknown:
+            break;
+        case Texture:
+            delete this->data.texture;
+            break;
+        case Sound:
+            break;
+        case Model:
+            break;
+        case Lang:
+            break;
+    }
+}