End portals storage

src/main/java/ru/betterend/registry/EndPortals.java

@@ -0,0 +1,111 @@
+package ru.betterend.registry;
+
+import java.io.File;
+import java.util.Iterator;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.util.Identifier;
+import ru.betterend.config.ConfigWriter;
+import ru.betterend.util.JsonFactory;
+import ru.betterend.util.MHelper;
+
+public class EndPortals {
+	private static PortalInfo[] portals;
+	
+	public static void loadPortals() {
+		File file = new File(ConfigWriter.MOD_CONFIG_DIR, "portals.json");
+		JsonObject json;
+		if (!file.exists()) {
+			file.getParentFile().mkdirs();
+			json = makeDefault(file);
+		}
+		else {
+			json = JsonFactory.getJsonObject(file);
+		}
+		if (!json.has("portals") || !json.get("portals").isJsonArray()) {
+			json = makeDefault(file);
+		}
+		JsonArray array = json.get("portals").getAsJsonArray();
+		if (array.size() == 0) {
+			json = makeDefault(file);
+			array = json.get("portals").getAsJsonArray();
+		}
+		portals = new PortalInfo[array.size()];
+		for (int i = 0; i < portals.length; i++) {
+			portals[i] = new PortalInfo(array.get(i).getAsJsonObject());
+		}
+	}
+	
+	public static ServerWorld getWorld(MinecraftServer server, int state) {
+		if (state >= portals.length) {
+			return server.getOverworld();
+		}
+		return portals[state].getWorld(server);
+	}
+	
+	public static int getColor(int state) {
+		return portals[state].color;
+	}
+	
+	private static JsonObject makeDefault(File file) {
+		JsonObject jsonObject = new JsonObject();
+		JsonFactory.storeJson(file, jsonObject);
+		JsonArray array = new JsonArray();
+		jsonObject.add("portals", array);
+		array.add(makeDefault().toJson());
+		JsonFactory.storeJson(file, jsonObject);
+		return jsonObject;
+	}
+	
+	private static PortalInfo makeDefault() {
+		return new PortalInfo(new Identifier("minecraft:overworld"), 255, 255, 255);
+	}
+	
+	private static class PortalInfo {
+		private final Identifier dimension;
+		private final int color;
+		private ServerWorld world;
+		
+		PortalInfo(JsonObject obj) {
+			this(
+				new Identifier(JsonFactory.getString(obj, "dimension", "minecraft:overworld")),
+				JsonFactory.getInt(obj, "colorRed", 255),
+				JsonFactory.getInt(obj, "colorGreen", 255),
+				JsonFactory.getInt(obj, "colorBlue", 255)
+			);
+		}
+		
+		PortalInfo(Identifier dimension, int r, int g, int b) {
+			this.dimension = dimension;
+			this.color = MHelper.color(r, g, b);
+		}
+		
+		ServerWorld getWorld(MinecraftServer server) {
+			if (world != null) {
+				return world;
+			}
+			Iterator<ServerWorld> iterator = server.getWorlds().iterator();
+			while (iterator.hasNext()) {
+				ServerWorld world = iterator.next();
+				if (world.getRegistryKey().getValue().equals(dimension)) {
+					this.world = world;
+					return world;
+				}
+			}
+			return server.getOverworld();
+		}
+		
+		JsonObject toJson() {
+			JsonObject obj = new JsonObject();
+			obj.addProperty("dimension", dimension.toString());
+			obj.addProperty("colorRed", (color >> 16) & 255);
+			obj.addProperty("colorGreen", (color >> 8) & 255);
+			obj.addProperty("colorBlue", color & 255);
+			return obj;
+		}
+	}
+}