perf: Significantly improved rendering performance

src/main/java/cz/jzitnik/game/Game.java

@@ -116,11 +116,11 @@ public class Game {
         world[cords[1]][cords[0]].remove(player.getPlayerBlock2());
         world[cords[1] - 1][cords[0] + 1].add(player.getPlayerBlock1());
         world[cords[1] - 1][cords[0]].remove(player.getPlayerBlock1());
-        screenRenderer.render(this);
+        new Thread(() -> screenRenderer.render(this)).start();
 
         stats.setBlocksTraveled(stats.getBlocksTraveled() + 1);
 
-        entitySpawnProvider.update(this, terminal);
+        new Thread(() -> entitySpawnProvider.update(this, terminal)).start();
 
         playMovePlayerSound(cords[0] + 1, cords[1]);
 
@@ -147,11 +147,11 @@ public class Game {
         world[cords[1]][cords[0]].remove(player.getPlayerBlock2());
         world[cords[1] - 1][cords[0] - 1].add(player.getPlayerBlock1());
         world[cords[1] - 1][cords[0]].remove(player.getPlayerBlock1());
-        screenRenderer.render(this);
+        new Thread(() -> screenRenderer.render(this)).start();
 
         stats.setBlocksTraveled(stats.getBlocksTraveled() + 1);
 
-        entitySpawnProvider.update(this, terminal);
+        new Thread(() -> entitySpawnProvider.update(this, terminal)).start();
 
         playMovePlayerSound(cords[0] - 1, cords[1]);
 

src/main/java/cz/jzitnik/game/sprites/SimpleSprite.java

@@ -12,6 +12,6 @@ public class SimpleSprite extends Sprite {
     }
 
     public String getSprite(Enum key) {
-        throw new RuntimeException("Imposible state");
+        throw new RuntimeException("Impossible state");
     }
 }

src/main/java/cz/jzitnik/game/threads/list/InputHandlerThread.java

@@ -8,9 +8,11 @@ import cz.jzitnik.tui.MouseHandler;
 import cz.jzitnik.tui.ScreenRenderer;
 import org.jline.terminal.MouseEvent;
 import org.jline.terminal.Terminal;
+
 import java.io.IOException;
 import java.nio.BufferUnderflowException;
 import java.util.Optional;
+
 import cz.jzitnik.game.annotations.ThreadRegistry;
 
 /**
@@ -69,13 +71,11 @@ public class InputHandlerThread extends Thread {
                                         screenRenderer);
                                 case ESC -> game.getGameStates().dependencies.escape.mouse(mouseEvent, terminal,
                                         screenRenderer);
-                                case SAVE_EXIT -> {
-                                }
                                 case OPTIONS -> game.getGameStates().dependencies.options.handleMouse(mouseEvent,
                                         terminal, screenRenderer);
                                 case DEATH_SCREEN -> game.getGameStates().dependencies.deathScreen
                                         .handleMouse(mouseEvent, terminal, screenRenderer, game);
-                                case SAVED -> {
+                                case SAVE_EXIT, SAVED -> {
                                 }
                             }
                         }
@@ -86,11 +86,9 @@ public class InputHandlerThread extends Thread {
                     case '1', '2', '3', '4', '5', '6', '7', '8', '9' -> game.changeSlot(key - 49, screenRenderer);
                     case 'a' -> {
                         game.movePlayerLeft(screenRenderer, terminal);
-                        screenRenderer.render(game);
                     }
                     case 'd' -> {
                         game.movePlayerRight(screenRenderer, terminal);
-                        screenRenderer.render(game);
                     }
                     case ' ' -> {
                         game.movePlayerUp(screenRenderer);

src/main/java/cz/jzitnik/tui/MouseHandler.java

@@ -189,6 +189,6 @@ public class MouseHandler {
             screenRenderer.setSelectedBlock(Optional.empty());
         }
 
-        screenRenderer.render(game);
+        new Thread(() -> screenRenderer.render(game)).start();
     }
 }

src/main/java/cz/jzitnik/tui/ScreenRenderer.java

@@ -27,6 +27,7 @@ import java.util.Optional;
 public class ScreenRenderer {
     private final SpriteList spriteList;
     private final Terminal terminal;
+    private boolean rendering = false;
 
     /**
      * Constructs a {@code ScreenRenderer} with the given sprite list and terminal.
@@ -98,6 +99,10 @@ public class ScreenRenderer {
      * @param game Current game state to render.
      */
     public synchronized void render(Game game) {
+        if (rendering) {
+            return;
+        }
+        rendering = true;
         log.debug("Rendering frame");
         var world = game.getWorld();
         StringBuilder main = new StringBuilder();
@@ -216,6 +221,7 @@ public class ScreenRenderer {
 
         log.debug("Frame rendered");
         System.out.println(main);
+        rendering = false;
     }
 
     /**