From 3bb147aad670c9cecebf214735e175c69f531804 Mon Sep 17 00:00:00 2001
From: retuci0 <retucio@gmail.com>
Date: Tue, 17 Mar 2026 08:55:06 +0100
Subject: [PATCH] added zoom with F

---
 Minecraft.Client/GameRenderer.cpp             | 22 +++++++++++--------
 .../Windows64/KeyboardMouseInput.h            |  1 +
 .../Windows64/Windows64_Minecraft.cpp         | 14 ++++++++++++
 3 files changed, 28 insertions(+), 9 deletions(-)

diff --git a/Minecraft.Client/GameRenderer.cpp b/Minecraft.Client/GameRenderer.cpp
index 8c9dd5916..09ccde8ca 100644
--- a/Minecraft.Client/GameRenderer.cpp
+++ b/Minecraft.Client/GameRenderer.cpp
@@ -578,17 +578,21 @@ void GameRenderer::moveCameraToPlayer(float a)
 
 }
 
+// fixed - retucio
+void GameRenderer::zoomRegion(double zoom, double xa, double ya) {
+	// clamp zoom to reasonable range to avoid degenerate matrices
+	if (zoom < 0.1) zoom = 0.1;
+	if (zoom > 10.0) zoom = 10.0;
 
-void GameRenderer::zoomRegion(double zoom, double xa, double ya)
-{
-	zoom = zoom;
-	zoom_x = xa;
-	zoom_y = ya;
+	this->zoom = zoom;
+	this->zoom_x = xa;
+	this->zoom_y = ya;
 }
 
-void GameRenderer::unZoomRegion()
-{
-	zoom = 1;
+void GameRenderer::unZoomRegion() {
+	this->zoom = 1.0;
+	this->zoom_x = 0.0;
+	this->zoom_y = 0.0;
 }
 
 // 4J added as we have more complex adjustments to make for fov & aspect on account of viewports
@@ -2249,4 +2253,4 @@ int GameRenderer::getFpsCap(int option)
 void GameRenderer::updateAllChunks()
 {
 	//	mc->levelRenderer->updateDirtyChunks(mc->cameraTargetPlayer, true);
-}
+}
\ No newline at end of file
diff --git a/Minecraft.Client/Windows64/KeyboardMouseInput.h b/Minecraft.Client/Windows64/KeyboardMouseInput.h
index 2079a72a1..5d54dd895 100644
--- a/Minecraft.Client/Windows64/KeyboardMouseInput.h
+++ b/Minecraft.Client/Windows64/KeyboardMouseInput.h
@@ -26,6 +26,7 @@ public:
 	static const int KEY_CRAFTING = 'C';
 	static const int KEY_CRAFTING_ALT = 'R';
 	static const int KEY_CHAT = 'T';
+	static const int KEY_ZOOM = 'F';
 	static const int KEY_CONFIRM = VK_RETURN;
 	static const int KEY_CANCEL = VK_ESCAPE;
 	static const int KEY_PAUSE = VK_ESCAPE;
diff --git a/Minecraft.Client/Windows64/Windows64_Minecraft.cpp b/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
index 81430ffcc..1f5ffda77 100644
--- a/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
+++ b/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
@@ -562,6 +562,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 			vk = (lParam & (1 << 24)) ? VK_RCONTROL : VK_LCONTROL;
 		else if (vk == VK_MENU)
 			vk = (lParam & (1 << 24)) ? VK_RMENU : VK_LMENU;
+
 		g_KBMInput.OnKeyDown(vk);
 		return DefWindowProc(hWnd, message, wParam, lParam);
 	}
@@ -1821,6 +1822,19 @@ int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
 			SetFocus(g_hWnd);
 		}
 
+		// zoom with F - retucio
+		if (!ui.GetMenuDisplayed(0) && pMinecraft->screen == NULL) {
+			Minecraft* mc = Minecraft::GetInstance();
+			if (mc && mc->gameRenderer) {
+				if (g_KBMInput.IsKeyDown(KeyboardMouseInput::KEY_ZOOM)) {
+					mc->gameRenderer->zoomRegion(5.0, 0.0, 0.0);
+				} else {
+					mc->gameRenderer->unZoomRegion();
+				}
+			}
+		}
+	
+
 #if 0
 		// has the game defined profile data been changed (by a profile load)
 		if(app.uiGameDefinedDataChangedBitmask!=0)