From ae07a848bf19f6d54909c2cac7ec3d51ee28198a Mon Sep 17 00:00:00 2001
From: jzitnik-dev <email@jzitnik.dev>
Date: Wed, 31 Dec 2025 23:16:04 +0100
Subject: [PATCH] feat: Microphone detection

---
 .idea/misc.xml                                |  2 +-
 src/main/java/cz/jzitnik/Game.java            |  4 +
 src/main/java/cz/jzitnik/Main.java            |  8 +-
 .../jzitnik/annotations/ThreadRegistry.java   | 11 +++
 .../events/handlers/ExitEventHandler.java     | 12 ++-
 .../events/handlers/FullRoomDrawHandler.java  |  4 +-
 .../handlers/MouseActionEventHandler.java     |  6 +-
 .../handlers/PlayerMoveEventHandler.java      |  6 +-
 src/main/java/cz/jzitnik/game/GameState.java  |  6 +-
 .../java/cz/jzitnik/states/RenderState.java   |  1 +
 .../java/cz/jzitnik/states/SoundState.java    | 10 +++
 .../cz/jzitnik/threads/MicrophoneThread.java  | 75 +++++++++++++++++++
 .../cz/jzitnik/utils/ShutdownableThread.java  |  6 ++
 .../java/cz/jzitnik/utils/ThreadManager.java  | 47 ++++++++++++
 14 files changed, 183 insertions(+), 15 deletions(-)
 create mode 100644 src/main/java/cz/jzitnik/annotations/ThreadRegistry.java
 create mode 100644 src/main/java/cz/jzitnik/states/SoundState.java
 create mode 100644 src/main/java/cz/jzitnik/threads/MicrophoneThread.java
 create mode 100644 src/main/java/cz/jzitnik/utils/ShutdownableThread.java
 create mode 100644 src/main/java/cz/jzitnik/utils/ThreadManager.java

diff --git a/.idea/misc.xml b/.idea/misc.xml
index 039a9d1..65ff655 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -8,7 +8,7 @@
       </list>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_22" default="true" project-jdk-name="22" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_X" default="true" project-jdk-name="openjdk-25" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/src/main/java/cz/jzitnik/Game.java b/src/main/java/cz/jzitnik/Game.java
index cb4934f..9848c14 100644
--- a/src/main/java/cz/jzitnik/Game.java
+++ b/src/main/java/cz/jzitnik/Game.java
@@ -2,6 +2,7 @@ package cz.jzitnik;
 
 import cz.jzitnik.game.setup.GameSetup;
 import cz.jzitnik.utils.DependencyManager;
+import cz.jzitnik.utils.ThreadManager;
 import org.reflections.Reflections;
 
 public class Game {
@@ -11,7 +12,10 @@ public class Game {
         Cli cli = dependencyManager.getDependencyOrThrow(Cli.class);
 
         GameSetup gameSetup = dependencyManager.getDependencyOrThrow(GameSetup.class);
+        ThreadManager threadManager = dependencyManager.getDependencyOrThrow(ThreadManager.class);
+
         gameSetup.setup();
+        threadManager.startAll();
 
         cli.run();
     }
diff --git a/src/main/java/cz/jzitnik/Main.java b/src/main/java/cz/jzitnik/Main.java
index 5f7d51f..884a74a 100644
--- a/src/main/java/cz/jzitnik/Main.java
+++ b/src/main/java/cz/jzitnik/Main.java
@@ -1,5 +1,7 @@
-import cz.jzitnik.Game;
+package cz.jzitnik;
 
-void main() {
-    new Game().start();
+public class Main {
+    public static void main(String[] args) {
+        new Game().start();
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/cz/jzitnik/annotations/ThreadRegistry.java b/src/main/java/cz/jzitnik/annotations/ThreadRegistry.java
new file mode 100644
index 0000000..ea4dfdd
--- /dev/null
+++ b/src/main/java/cz/jzitnik/annotations/ThreadRegistry.java
@@ -0,0 +1,11 @@
+package cz.jzitnik.annotations;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.lang.annotation.ElementType;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface ThreadRegistry {
+}
diff --git a/src/main/java/cz/jzitnik/events/handlers/ExitEventHandler.java b/src/main/java/cz/jzitnik/events/handlers/ExitEventHandler.java
index 69bf627..7fed6a5 100644
--- a/src/main/java/cz/jzitnik/events/handlers/ExitEventHandler.java
+++ b/src/main/java/cz/jzitnik/events/handlers/ExitEventHandler.java
@@ -1,22 +1,30 @@
 package cz.jzitnik.events.handlers;
 
 import cz.jzitnik.annotations.EventHandler;
+import cz.jzitnik.annotations.injectors.InjectDependency;
+import cz.jzitnik.annotations.injectors.InjectState;
 import cz.jzitnik.events.ExitEvent;
 import cz.jzitnik.states.RunningState;
 import cz.jzitnik.utils.DependencyManager;
 import cz.jzitnik.utils.StateManager;
+import cz.jzitnik.utils.ThreadManager;
 import cz.jzitnik.utils.events.AbstractEventHandler;
 
 @EventHandler(ExitEvent.class)
 public class ExitEventHandler extends AbstractEventHandler<ExitEvent> {
+    @InjectDependency
+    private ThreadManager threadManager;
+
+    @InjectState
+    private RunningState runningState;
+
     public ExitEventHandler(DependencyManager dm) {
         super(dm);
     }
 
     @Override
     public void handle(ExitEvent event) {
-        StateManager stateManager = dm.getDependencyOrThrow(StateManager.class);
-        RunningState runningState = stateManager.getOrThrow(RunningState.class);
+        threadManager.shutdownAll();
         runningState.setRunning(false);
         System.exit(0); // Pls don't blame me
     }
diff --git a/src/main/java/cz/jzitnik/events/handlers/FullRoomDrawHandler.java b/src/main/java/cz/jzitnik/events/handlers/FullRoomDrawHandler.java
index 4dfb578..788fc29 100644
--- a/src/main/java/cz/jzitnik/events/handlers/FullRoomDrawHandler.java
+++ b/src/main/java/cz/jzitnik/events/handlers/FullRoomDrawHandler.java
@@ -121,11 +121,11 @@ public class FullRoomDrawHandler extends AbstractEventHandler<FullRoomDraw> {
                 eventManager.emitEvent(new RerenderScreen(partsToRerender.toArray(RerenderScreen.ScreenPart[]::new)));
             }
 
-            gameState.setTerminalTooSmall(false);
+            renderState.setTerminalTooSmall(false);
         } catch (ArrayIndexOutOfBoundsException e) {
             // Screen too small to fit the room
             eventManager.emitEvent(new TerminalTooSmallEvent());
-            gameState.setTerminalTooSmall(true);
+            renderState.setTerminalTooSmall(true);
         }
     }
 }
diff --git a/src/main/java/cz/jzitnik/events/handlers/MouseActionEventHandler.java b/src/main/java/cz/jzitnik/events/handlers/MouseActionEventHandler.java
index 0fc6b4b..09e082e 100644
--- a/src/main/java/cz/jzitnik/events/handlers/MouseActionEventHandler.java
+++ b/src/main/java/cz/jzitnik/events/handlers/MouseActionEventHandler.java
@@ -8,6 +8,7 @@ import cz.jzitnik.events.MouseMoveEvent;
 import cz.jzitnik.game.GameState;
 import cz.jzitnik.game.objects.GameObject;
 import cz.jzitnik.game.objects.Interactable;
+import cz.jzitnik.states.RenderState;
 import cz.jzitnik.utils.DependencyManager;
 import cz.jzitnik.utils.UIClickHandlerRepository;
 import cz.jzitnik.utils.events.AbstractEventHandler;
@@ -30,6 +31,9 @@ public class MouseActionEventHandler extends AbstractEventHandler<MouseAction> {
     @InjectState
     private GameState gameState;
 
+    @InjectState
+    private RenderState renderState;
+
     @Override
     public void handle(MouseAction event) {
         if (gameState.getScreen() != null) {
@@ -37,7 +41,7 @@ public class MouseActionEventHandler extends AbstractEventHandler<MouseAction> {
             return;
         }
 
-        if (gameState.isTerminalTooSmall()) {
+        if (renderState.isTerminalTooSmall()) {
             return;
         }
 
diff --git a/src/main/java/cz/jzitnik/events/handlers/PlayerMoveEventHandler.java b/src/main/java/cz/jzitnik/events/handlers/PlayerMoveEventHandler.java
index f662e45..daa87af 100644
--- a/src/main/java/cz/jzitnik/events/handlers/PlayerMoveEventHandler.java
+++ b/src/main/java/cz/jzitnik/events/handlers/PlayerMoveEventHandler.java
@@ -16,6 +16,7 @@ import cz.jzitnik.game.GameState;
 import cz.jzitnik.game.Player;
 import cz.jzitnik.game.ResourceManager;
 import cz.jzitnik.game.utils.RoomCords;
+import cz.jzitnik.states.RenderState;
 import cz.jzitnik.states.ScreenBuffer;
 import cz.jzitnik.states.TerminalState;
 import cz.jzitnik.utils.DependencyManager;
@@ -54,9 +55,12 @@ public class PlayerMoveEventHandler extends AbstractEventHandler<PlayerMoveEvent
     @InjectConfig
     private PlayerConfig playerConfig;
 
+    @InjectState
+    private RenderState renderState;
+
     @Override
     public void handle(PlayerMoveEvent event) {
-        if (gameState.isTerminalTooSmall()) {
+        if (renderState.isTerminalTooSmall()) {
             return;
         }
 
diff --git a/src/main/java/cz/jzitnik/game/GameState.java b/src/main/java/cz/jzitnik/game/GameState.java
index f6b5316..efe580e 100644
--- a/src/main/java/cz/jzitnik/game/GameState.java
+++ b/src/main/java/cz/jzitnik/game/GameState.java
@@ -11,7 +11,7 @@ import lombok.Setter;
 @RequiredArgsConstructor
 @State
 public class GameState {
-    private final DependencyManager dependencyManager;
+    private final DependencyManager dependencyManager; // Maybe transient in the future
 
     @Getter
     @Setter
@@ -28,10 +28,6 @@ public class GameState {
     @Getter
     private Screen screen;
 
-    @Getter
-    @Setter
-    private boolean terminalTooSmall = false;
-
     public void setScreen(Screen screen) {
         if (screen != null) {
             dependencyManager.inject(screen);
diff --git a/src/main/java/cz/jzitnik/states/RenderState.java b/src/main/java/cz/jzitnik/states/RenderState.java
index 81fe07d..faf2ea5 100644
--- a/src/main/java/cz/jzitnik/states/RenderState.java
+++ b/src/main/java/cz/jzitnik/states/RenderState.java
@@ -9,4 +9,5 @@ import lombok.Setter;
 @Setter
 public class RenderState {
     private boolean isFirstRender = true;
+    private boolean terminalTooSmall = false;
 }
diff --git a/src/main/java/cz/jzitnik/states/SoundState.java b/src/main/java/cz/jzitnik/states/SoundState.java
new file mode 100644
index 0000000..bc90706
--- /dev/null
+++ b/src/main/java/cz/jzitnik/states/SoundState.java
@@ -0,0 +1,10 @@
+package cz.jzitnik.states;
+
+import cz.jzitnik.annotations.State;
+import lombok.Data;
+
+@Data
+@State
+public class SoundState {
+    private double soundVolume;
+}
diff --git a/src/main/java/cz/jzitnik/threads/MicrophoneThread.java b/src/main/java/cz/jzitnik/threads/MicrophoneThread.java
new file mode 100644
index 0000000..83a0756
--- /dev/null
+++ b/src/main/java/cz/jzitnik/threads/MicrophoneThread.java
@@ -0,0 +1,75 @@
+package cz.jzitnik.threads;
+
+import cz.jzitnik.annotations.ThreadRegistry;
+import cz.jzitnik.annotations.injectors.InjectState;
+import cz.jzitnik.states.SoundState;
+import cz.jzitnik.utils.ShutdownableThread;
+
+import javax.sound.sampled.*;
+
+@ThreadRegistry
+public class MicrophoneThread extends ShutdownableThread {
+    @InjectState
+    private SoundState soundState;
+
+    private volatile boolean running = true;
+
+    @Override
+    public void run() {
+        AudioFormat format = new AudioFormat(44100, 16, 1, true, false);
+        DataLine.Info info = new DataLine.Info(TargetDataLine.class, format);
+
+        if (!AudioSystem.isLineSupported(info)) {
+            System.err.println("Line not supported: " + info);
+            return;
+        }
+
+        TargetDataLine line = null;
+
+        try {
+            line = (TargetDataLine) AudioSystem.getLine(info);
+            line.open(format);
+            line.start();
+
+            byte[] buffer = new byte[2048];
+
+            while (running && !Thread.currentThread().isInterrupted()) {
+                int bytesRead = line.read(buffer, 0, buffer.length);
+
+                if (bytesRead > 0) {
+                    double volume = calculateRMS(buffer, bytesRead);
+                    soundState.setSoundVolume(volume);
+                }
+            }
+        } catch (LineUnavailableException e) {
+            System.err.println("Microphone line unavailable: " + e.getMessage());
+        } finally {
+            if (line != null) {
+                line.stop();
+                line.close();
+            }
+        }
+    }
+
+    public void shutdown() {
+        this.running = false;
+        this.interrupt();
+    }
+
+    private double calculateRMS(byte[] buffer, int bytesRead) {
+        long sum = 0;
+
+        for (int i = 0; i < bytesRead; i += 2) {
+            int low = buffer[i];
+            int high = buffer[i + 1];
+
+            int sample = (high << 8) | (low & 0xFF);
+
+            sum += (long) sample * sample;
+        }
+
+        double rms = Math.sqrt(sum / (bytesRead / 2.0));
+
+        return (rms / 32768.0) * 100;
+    }
+}
diff --git a/src/main/java/cz/jzitnik/utils/ShutdownableThread.java b/src/main/java/cz/jzitnik/utils/ShutdownableThread.java
new file mode 100644
index 0000000..20d7c13
--- /dev/null
+++ b/src/main/java/cz/jzitnik/utils/ShutdownableThread.java
@@ -0,0 +1,6 @@
+package cz.jzitnik.utils;
+
+public abstract class ShutdownableThread extends Thread {
+    public abstract void run();
+    public abstract void shutdown();
+}
diff --git a/src/main/java/cz/jzitnik/utils/ThreadManager.java b/src/main/java/cz/jzitnik/utils/ThreadManager.java
new file mode 100644
index 0000000..789e881
--- /dev/null
+++ b/src/main/java/cz/jzitnik/utils/ThreadManager.java
@@ -0,0 +1,47 @@
+package cz.jzitnik.utils;
+
+import cz.jzitnik.annotations.Dependency;
+import cz.jzitnik.annotations.ThreadRegistry;
+import org.reflections.Reflections;
+
+import java.lang.reflect.InvocationTargetException;
+import java.util.HashSet;
+
+@Dependency
+public class ThreadManager {
+    private final HashSet<ShutdownableThread> threads = new HashSet<>();
+    private final DependencyManager dependencyManager;
+
+    public ThreadManager(Reflections reflections, DependencyManager dependencyManager) {
+        this.dependencyManager = dependencyManager;
+
+        var classes = reflections.getTypesAnnotatedWith(ThreadRegistry.class);
+        for (Class<?> clazz : classes) {
+            if (!ShutdownableThread.class.isAssignableFrom(clazz)) {
+                continue;
+            }
+
+            try {
+                var instance = (ShutdownableThread) clazz.getDeclaredConstructor().newInstance();
+
+                threads.add(instance);
+            } catch (InstantiationException | IllegalAccessException | InvocationTargetException |
+                     NoSuchMethodException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    public void startAll() {
+        for (ShutdownableThread thread : threads) {
+            dependencyManager.inject(thread);
+            thread.start();
+        }
+    }
+
+    public void shutdownAll() {
+        for (ShutdownableThread thread : threads) {
+            thread.shutdown();
+        }
+    }
+}