From 6ea3fef8c69465cdb283195556b9c49d36605dff Mon Sep 17 00:00:00 2001
From: TakaRikka <takarikka@outlook.com>
Date: Sat, 18 Apr 2026 03:38:16 -0700
Subject: [PATCH] fix mirrored shops / projection

---
 src/d/d_shop_system.cpp | 12 ++++++++++++
 src/m_Do/m_Do_lib.cpp   | 12 ++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/src/d/d_shop_system.cpp b/src/d/d_shop_system.cpp
index f1636bb093..e1827b76c1 100644
--- a/src/d/d_shop_system.cpp
+++ b/src/d/d_shop_system.cpp
@@ -1572,10 +1572,22 @@ BOOL dShopSystem_c::checkShopOpen() {
 }
 
 bool dShopSystem_c::checkLeftTrigger(STControl* i_stick) {
+#if TARGET_PC
+    if (dusk::getSettings().game.enableMirrorMode) {
+        return i_stick->checkRightTrigger();
+    }
+#endif
+
     return i_stick->checkLeftTrigger();
 }
 
 bool dShopSystem_c::checkRightTrigger(STControl* i_stick) {
+#if TARGET_PC
+    if (dusk::getSettings().game.enableMirrorMode) {
+        return i_stick->checkLeftTrigger();
+    }
+#endif
+
     return i_stick->checkRightTrigger();
 }
 
diff --git a/src/m_Do/m_Do_lib.cpp b/src/m_Do/m_Do_lib.cpp
index b541490353..bddf9c7b94 100644
--- a/src/m_Do/m_Do_lib.cpp
+++ b/src/m_Do/m_Do_lib.cpp
@@ -108,6 +108,12 @@ void mDoLib_project(Vec* src, Vec* dst) {
     }
 
     dst->x = ((0.5f + (multVec.x * calcFloat)) * xSize) + xOffset;
+    #if TARGET_PC
+    if (dusk::getSettings().game.enableMirrorMode) {
+        dst->x = ((0.5f + (-multVec.x * calcFloat)) * xSize) + xOffset;
+    }
+    #endif
+
     dst->y = ((0.5f + (multVec.y * (-calcFloat))) * ySize) + yOffset;
 }
 
@@ -171,6 +177,12 @@ void mDoLib_project(Vec* src, Vec* dst, JGeometry::TBox2<f32> viewport) {
     }
 
     dst->x = ((0.5f + (multVec.x * calcFloat)) * xSize) + xOffset;
+    #if TARGET_PC
+    if (dusk::getSettings().game.enableMirrorMode) {
+        dst->x = ((0.5f + (-multVec.x * calcFloat)) * xSize) + xOffset;
+    }
+    #endif
+
     dst->y = ((0.5f + (multVec.y * (-calcFloat))) * ySize) + yOffset;
 }
 #endif