Add API calls for setting varcs, varbits, etc.

Add API support for arbitrary data storage
Add RememberMyLogin plugin

client/src/main/java/plugin/Plugin.java

@@ -85,6 +85,11 @@ public abstract class Plugin {
      */
     public void OnVarpUpdate(int id, int value) {}
 
+    /**
+     * OnLogin is called when the client processes a login.
+     */
+    public void OnLogin() {}
+
     /**
      * OnLogout is called when the client logs out. This should be used to clear player-relevant plugin state.
      */

client/src/main/java/plugin/PluginRepository.java

@@ -5,7 +5,7 @@ import plugin.api.MiniMenuEntry;
 import plugin.api.MiniMenuType;
 import rt4.*;
 
-import java.io.File;
+import java.io.*;
 import java.net.URL;
 import java.net.URLClassLoader;
 import java.util.Arrays;
@@ -20,6 +20,7 @@ import java.util.stream.Collectors;
  */
 public class PluginRepository {
     static HashMap<PluginInfo, Plugin> loadedPlugins = new HashMap<>();
+    public static HashMap<String, Object> pluginStorage = new HashMap<>();
 
     public static void registerPlugin(PluginInfo info, Plugin plugin) {
         loadedPlugins.put(info, plugin);
@@ -40,6 +41,23 @@ public class PluginRepository {
             return;
         }
 
+        File pluginStorage = new File(GlobalJsonConfig.instance.pluginsFolder + File.separator + "plsto");
+        if (pluginStorage.exists()) {
+           try (FileInputStream fis = new FileInputStream(pluginStorage)) {
+               ObjectInputStream ois = new ObjectInputStream(fis);
+               PluginRepository.pluginStorage = (HashMap<String, Object>) ois.readObject();
+               ois.close();
+           } catch (Exception e) {e.printStackTrace();}
+        }
+
+        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
+            try(FileOutputStream fos = new FileOutputStream(GlobalJsonConfig.instance.pluginsFolder + File.separator + "plsto")) {
+                ObjectOutputStream oos = new ObjectOutputStream(fos);
+                oos.writeObject(PluginRepository.pluginStorage);
+                oos.close();
+            } catch (Exception e) {e.printStackTrace();}
+        }));
+
         try {
             URL[] classPath = {pluginsDirectory.toURI().toURL()};
             URLClassLoader loader = new URLClassLoader(classPath);
@@ -142,4 +160,8 @@ public class PluginRepository {
         API.customMiniMenuIndex = 0;
         loadedPlugins.values().forEach((plugin) -> plugin.OnMiniMenuCreate(API.GetMiniMenuEntries()));
     }
+
+    public static void OnLogin() {
+        loadedPlugins.values().forEach((plugin) -> plugin.OnLogin());
+    }
 }

client/src/main/java/plugin/api/API.java

@@ -1,5 +1,6 @@
 package plugin.api;
 
+import plugin.PluginRepository;
 import rt4.*;
 import rt4.DisplayMode;
 import rt4.Font;
@@ -222,4 +223,34 @@ public class API {
         MiniMenu.size++;
         return entry;
     }
+
+    public static boolean IsLoggedIn() {
+        return client.gameState == 30;
+    }
+
+    public static void StoreData(String key, Object value) {
+        PluginRepository.pluginStorage.put(key, value);
+    }
+
+    public static Object GetData(String key) {
+        return PluginRepository.pluginStorage.get(key);
+    }
+
+    public static void SetVarcStr(int varcId, String str) {
+        VarcDomain.varcstrs[varcId] = JagString.of(str);
+        VarcDomain.updatedVarcstrs[VarcDomain.updatedVarcstrsWriterIndex++] = varcId;
+    }
+
+    public static void SetVarc(int varcId, int value) {
+        VarcDomain.varcs[varcId] = value;
+        VarcDomain.updatedVarcs[VarcDomain.updatedVarcsWriterIndex++] = varcId;
+    }
+
+    public static void SetVarp(int varpId, int value) {
+        VarpDomain.setVarbit(varpId, value);
+    }
+
+    public static void SetVarbit(int varbitId, int value) {
+        VarpDomain.setVarbitClient(varbitId, value);
+    }
 }

client/src/main/java/rt4/client.java

@@ -322,6 +322,9 @@ public final class client extends GameShell {
 		if (gameState == 0) {
 			LoadingBarAwt.clear();
 		}
+		if (gameState == 30) {
+			PluginRepository.OnLogin();
+		}
 		if (arg0 == 40) {
 			LoginManager.clear();
 		}

plugin-playground/src/main/kotlin/RememberMyLogin/plugin.kt

@@ -0,0 +1,44 @@
+package RememberMyLogin
+
+import plugin.Plugin
+import plugin.annotations.PluginMeta
+import plugin.api.API
+import rt4.Component
+import rt4.JagString
+import rt4.Player
+
+@PluginMeta (
+    author = "Ceikry",
+    description = "Stores your last used login for automatic reuse",
+    version = 1.0
+)
+class plugin : Plugin() {
+    var hasRan = false
+    var username = ""
+    var password = ""
+
+    override fun Init() {
+        username = API.GetData("login-user") as? String ?: ""
+        password = API.GetData("login-pass") as? String ?: ""
+    }
+
+    override fun ComponentDraw(componentIndex: Int, component: Component?, screenX: Int, screenY: Int) {
+        if (hasRan || API.IsLoggedIn()) return
+        if (component!!.text == JagString.of("Please Log In")) {
+            API.SetVarcStr(32, username)
+            API.SetVarcStr(33, password)
+            hasRan = true
+        }
+    }
+
+    override fun OnLogin() {
+        username = String(Player.usernameInput.chars)
+        password = String(Player.password.chars)
+        API.StoreData("login-user", username)
+        API.StoreData("login-pass", password)
+    }
+
+    override fun OnLogout() {
+        hasRan = false
+    }
+}