From b510ad3fc662b300fd7a0c5ccd3d451163c15ba3 Mon Sep 17 00:00:00 2001
From: Justin Scofield <47263509+scawful@users.noreply.github.com>
Date: Sun, 7 Aug 2022 13:25:34 -0400
Subject: [PATCH] feat: add initial hook parameter with default val * untested

---
 src/app/asm/script.cc | 19 +++++++++++++++----
 src/app/asm/script.h  |  3 ++-
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/src/app/asm/script.cc b/src/app/asm/script.cc
index 6203353f..e65c94c6 100644
--- a/src/app/asm/script.cc
+++ b/src/app/asm/script.cc
@@ -76,7 +76,8 @@ absl::Status Script::ApplyPatchToROM(ROM &rom) {
 }
 
 absl::Status Script::GenerateMosaicChangeAssembly(
-    ROM &rom, char mosaic_tiles[core::kNumOverworldMaps], int routine_offset) {
+    ROM &rom, char mosaic_tiles[core::kNumOverworldMaps], int routine_offset,
+    int hook_offset) {
   std::fstream file("assets/asm/mosaic_change.asm",
                     std::ios::out | std::ios::in);
   if (!file.is_open()) {
@@ -89,9 +90,19 @@ absl::Status Script::GenerateMosaicChangeAssembly(
   file.close();
 
   auto assembly_string = assembly.str();
-  if (!string_replace(assembly_string, "<HOOK>", kMosaicChangeOffset)) {
-    return absl::InternalError(
-        "Mosaic template did not have proper `<HOOK>` to replace.");
+
+  if (!hook_offset) {
+    // TODO: TESTME
+    if (!string_replace(assembly_string, "<HOOK>",
+                        absl::StrFormat("$%06x", hook_offset))) {
+      return absl::InternalError(
+          "Mosaic template did not have proper `<HOOK>` to replace.");
+    }
+  } else {
+    if (!string_replace(assembly_string, "<HOOK>", kMosaicChangeOffset)) {
+      return absl::InternalError(
+          "Mosaic template did not have proper `<HOOK>` to replace.");
+    }
   }
 
   if (!string_replace(
diff --git a/src/app/asm/script.h b/src/app/asm/script.h
index e5edcfe9..c0eb30ac 100644
--- a/src/app/asm/script.h
+++ b/src/app/asm/script.h
@@ -28,7 +28,8 @@ class Script {
   Script() { asar_init_with_dll_path("assets/libasar.dll"); }
 
   absl::Status GenerateMosaicChangeAssembly(
-      ROM& rom, char mosaic_tiles[core::kNumOverworldMaps], int routine_offset);
+      ROM& rom, char mosaic_tiles[core::kNumOverworldMaps], int routine_offset,
+      int hook_offset = 0);
 
  private:
   absl::Status ApplyPatchToROM(ROM& rom);