From 1eea0a701e2daac58fd3f01068baf0b16796c238 Mon Sep 17 00:00:00 2001
From: jzitnik-dev <email@jzitnik.dev>
Date: Fri, 2 Jan 2026 00:40:38 +0100
Subject: [PATCH] fix: Rerender part after item added to inventory

---
 .../handlers/InventoryRerenderHandler.java     | 18 ++++++++++++++++--
 src/main/java/cz/jzitnik/game/Player.java      |  2 ++
 .../java/cz/jzitnik/game/objects/Chest.java    |  3 +++
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/main/java/cz/jzitnik/events/handlers/InventoryRerenderHandler.java b/src/main/java/cz/jzitnik/events/handlers/InventoryRerenderHandler.java
index f934fe0..9a5f284 100644
--- a/src/main/java/cz/jzitnik/events/handlers/InventoryRerenderHandler.java
+++ b/src/main/java/cz/jzitnik/events/handlers/InventoryRerenderHandler.java
@@ -1,9 +1,12 @@
 package cz.jzitnik.events.handlers;
 
+import com.googlecode.lanterna.TerminalPosition;
 import com.googlecode.lanterna.TerminalSize;
 import com.googlecode.lanterna.TextColor;
 import cz.jzitnik.annotations.EventHandler;
+import cz.jzitnik.annotations.injectors.InjectDependency;
 import cz.jzitnik.events.InventoryRerender;
+import cz.jzitnik.events.RerenderScreen;
 import cz.jzitnik.game.GameRoom;
 import cz.jzitnik.game.GameState;
 import cz.jzitnik.game.ResourceManager;
@@ -17,11 +20,14 @@ import cz.jzitnik.utils.DependencyManager;
 import cz.jzitnik.utils.RerenderUtils;
 import cz.jzitnik.utils.StateManager;
 import cz.jzitnik.utils.events.AbstractEventHandler;
+import cz.jzitnik.utils.events.EventManager;
 
 import java.awt.image.BufferedImage;
 
 @EventHandler(InventoryRerender.class)
 public class InventoryRerenderHandler extends AbstractEventHandler<InventoryRerender> {
+    @InjectDependency
+    private EventManager eventManager;
 
     private static final int ITEMS_X = 3;
     private static final int ITEMS_Y = 5;
@@ -49,7 +55,9 @@ public class InventoryRerenderHandler extends AbstractEventHandler<InventoryRere
         super(dm);
     }
 
-    public static void renderInventoryRerender(DependencyManager dm) {
+    public record RenderResponse(int offsetX, int offsetY) {}
+
+    public static RenderResponse renderInventoryRerender(DependencyManager dm) {
         StateManager stateManager = dm.getDependencyOrThrow(StateManager.class);
         ResourceManager resourceManager = dm.getDependencyOrThrow(ResourceManager.class);
 
@@ -91,10 +99,16 @@ public class InventoryRerenderHandler extends AbstractEventHandler<InventoryRere
         for (int y = 0; y < grid.getHeight(); y++) {
             System.arraycopy(internalBuffer[y], 0, buffer[y + OFFSET_Y], OFFSET_X, grid.getWidth());
         }
+
+        return new RenderResponse(OFFSET_X, OFFSET_Y);
     }
 
     @Override
     public void handle(InventoryRerender event) {
-        renderInventoryRerender(dm);
+        RenderResponse renderResponse = renderInventoryRerender(dm);
+        eventManager.emitEvent(new RerenderScreen(new RerenderScreen.ScreenPart(
+                new TerminalPosition(renderResponse.offsetX, renderResponse.offsetY),
+                new TerminalPosition(renderResponse.offsetX + INVENTORY_WIDTH, renderResponse.offsetY + INVENTORY_HEIGHT)
+        )));
     }
 }
diff --git a/src/main/java/cz/jzitnik/game/Player.java b/src/main/java/cz/jzitnik/game/Player.java
index 2d9439b..9292d26 100644
--- a/src/main/java/cz/jzitnik/game/Player.java
+++ b/src/main/java/cz/jzitnik/game/Player.java
@@ -2,6 +2,8 @@ package cz.jzitnik.game;
 
 import cz.jzitnik.game.items.GameItem;
 import cz.jzitnik.game.utils.RoomCords;
+import cz.jzitnik.utils.DependencyManager;
+import cz.jzitnik.utils.events.EventManager;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.Setter;
diff --git a/src/main/java/cz/jzitnik/game/objects/Chest.java b/src/main/java/cz/jzitnik/game/objects/Chest.java
index fccdc8d..5825b14 100644
--- a/src/main/java/cz/jzitnik/game/objects/Chest.java
+++ b/src/main/java/cz/jzitnik/game/objects/Chest.java
@@ -7,6 +7,7 @@ import cz.jzitnik.annotations.injectors.InjectConfig;
 import cz.jzitnik.annotations.injectors.InjectDependency;
 import cz.jzitnik.annotations.injectors.InjectState;
 import cz.jzitnik.config.Debugging;
+import cz.jzitnik.events.InventoryRerender;
 import cz.jzitnik.events.MouseAction;
 import cz.jzitnik.events.RerenderScreen;
 import cz.jzitnik.game.GameRoom;
@@ -268,6 +269,8 @@ public final class Chest extends GameObject implements UIClickHandler {
 
         GameItem item = items.get(itemIndex);
         gameState.getPlayer().getInventory().add(item);
+        eventManager.emitEvent(new InventoryRerender());
+
         items.remove(item);
 
         if (items.isEmpty()) {