From 79018dee0d7467876be8be547ca48d513597852c Mon Sep 17 00:00:00 2001
From: taxicat1 <32942550+taxicat1@users.noreply.github.com>
Date: Sat, 6 Dec 2025 09:10:10 -0500
Subject: [PATCH] Fix folder name to proper case

---
 .../PokemonIr/PokemonIrApPatch.cpp            | 45 +++++++++++++++++++
 .../PokemonIr/PokemonIrApPatch.h              | 16 +++++++
 .../PokemonIr/PokemonIrApPatchAsm.h           | 26 +++++++++++
 .../PokemonIr/PokemonIrApPatchAsm.s           | 40 +++++++++++++++++
 4 files changed, 127 insertions(+)
 create mode 100644 arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatch.cpp
 create mode 100644 arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatch.h
 create mode 100644 arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatchAsm.h
 create mode 100644 arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatchAsm.s

diff --git a/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatch.cpp b/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatch.cpp
new file mode 100644
index 0000000..0d5ebda
--- /dev/null
+++ b/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatch.cpp
@@ -0,0 +1,45 @@
+#include "common.h"
+#include "../../../PatchContext.h"
+#include "PokemonIrApPatchAsm.h"
+#include "PokemonIrApPatch.h"
+
+const void* PokemonIrApPatch::InsertPatch(PatchContext& patchContext)
+{
+    ConfigurePatch();
+    return patchContext.GetPatchCodeCollection().AddUniquePatchCode<PokemonIrApPatchCode>
+    (
+        patchContext.GetPatchHeap(),
+        next ? next->InsertPatch(patchContext) : nullptr
+    )->GetPatchFunction();
+}
+
+void PokemonIrApPatch::ConfigurePatch() const {
+    switch (_version)
+    {
+        // All of these offsets are luckily region-independent
+        case PokemonIrVersion::Hgss:
+        {
+            pokemonirappatch_overlayId = 1;
+            pokemonirappatch_offset = 0xD2C + 0x12;
+            break;
+        }
+        case PokemonIrVersion::Bw1:
+        {
+            pokemonirappatch_overlayId = 231;
+            pokemonirappatch_offset = 0x1B8 + 0x12;
+            break;
+        }
+        case PokemonIrVersion::Bw2:
+        {
+            pokemonirappatch_overlayId = 338;
+            pokemonirappatch_offset = 0x1B8 + 0x12;
+            break;
+        }
+        default:
+        {
+            LOG_WARNING("Unsupported Pokemon IR version\n");
+            pokemonirappatch_overlayId = 0xFFFFFFFF;
+            break;
+        }
+    }
+}
diff --git a/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatch.h b/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatch.h
new file mode 100644
index 0000000..2d6fe29
--- /dev/null
+++ b/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatch.h
@@ -0,0 +1,16 @@
+#pragma once
+#include "../OverlayPatch.h"
+#include "PokemonIrVersion.h"
+
+/// @brief Arm9 overlay patch to disable the IR-sensor anti-piracy in Pokemon HeartGold, SoulSilver, Black, White, Black 2, and White 2.
+class PokemonIrApPatch : public OverlayPatch
+{
+public:
+    PokemonIrApPatch(PokemonIrVersion version) : _version(version) { }
+    const void* InsertPatch(PatchContext& patchContext) override;
+
+private:
+    PokemonIrVersion _version;
+
+    void ConfigurePatch() const;
+};
diff --git a/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatchAsm.h b/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatchAsm.h
new file mode 100644
index 0000000..9bcddaa
--- /dev/null
+++ b/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatchAsm.h
@@ -0,0 +1,26 @@
+#pragma once
+#include "sections.h"
+#include "../../../PatchCode.h"
+
+DEFINE_SECTION_SYMBOLS(pokemonirappatch);
+
+extern "C" void pokemonirappatch_entry();
+
+extern u32 pokemonirappatch_overlayId;
+extern u32 pokemonirappatch_offset;
+extern u32 pokemonirappatch_nextAddress;
+
+class PokemonIrApPatchCode : public PatchCode
+{
+public:
+    PokemonIrApPatchCode(PatchHeap& patchHeap, const void* nextPatch)
+        : PatchCode(SECTION_START(pokemonirappatch), SECTION_SIZE(pokemonirappatch), patchHeap)
+    {
+        pokemonirappatch_nextAddress = (u32)nextPatch;
+    }
+
+    const void* GetPatchFunction() const
+    {
+        return GetAddressAtTarget((void*)pokemonirappatch_entry);
+    }
+};
diff --git a/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatchAsm.s b/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatchAsm.s
new file mode 100644
index 0000000..a966f8f
--- /dev/null
+++ b/arm9/source/patches/arm9/OverlayPatches/PokemonIr/PokemonIrApPatchAsm.s
@@ -0,0 +1,40 @@
+.cpu arm946e-s
+.syntax unified
+.section "pokemonirappatch", "ax"
+.thumb
+
+.global pokemonirappatch_entry
+.type pokemonirappatch_entry, %function
+pokemonirappatch_entry:
+    push {r5,lr}
+
+    ldmia r5!, {r1, r2} // overlay id, ram address
+    ldr r0, pokemonirappatch_overlayId
+    cmp r0, r1
+    bne continue_to_next
+
+    ldr r1, pokemonirappatch_offset
+    movs r0, #1 // force return value of function to 1 instead of 0
+    strb r0, [r2, r1]
+
+continue_to_next:
+    ldr r0, pokemonirappatch_nextAddress
+    pop {r5,pc}
+
+.balign 4
+
+.global pokemonirappatch_overlayId
+pokemonirappatch_overlayId:
+    .word 0
+
+.global pokemonirappatch_offset
+pokemonirappatch_offset:
+    .word 0
+
+.global pokemonirappatch_nextAddress
+pokemonirappatch_nextAddress:
+    .word 0
+
+.pool
+
+.end