Randomized Enemy Sizes (#3321)

soh/soh/Enhancements/mods.cpp

@@ -1038,6 +1038,39 @@ void RegisterRandomizerSheikSpawn() {
     });
 }
 
+void RegisterRandomizedEnemySizes() {
+    GameInteractor::Instance->RegisterGameHook<GameInteractor::OnActorInit>([](void* refActor) {
+        // Randomized Enemy Sizes
+        Player* player = GET_PLAYER(gPlayState);
+        Actor* actor = static_cast<Actor*>(refActor);
+
+        // Only apply to enemies and bosses. Exclude the wobbly platforms in Jabu because they need to act like platforms.
+        if (!CVarGetInteger("gRandomizedEnemySizes", 0) || (actor->category != ACTORCAT_ENEMY && actor->category != ACTORCAT_BOSS) || actor->id == ACTOR_EN_BROB) {
+            return;
+        }
+
+        float randomNumber;
+        float randomScale;
+
+        uint8_t bigActor = rand() % 2;
+
+        // Big actor. Dodongo and Volvagia are always smaller because they're impossible when bigger.
+        if (bigActor && actor->id != ACTOR_BOSS_DODONGO && actor->id != ACTOR_BOSS_FD &&
+            actor->id != ACTOR_BOSS_FD2) {
+            randomNumber = rand() % 200;
+            // Between 100% and 300% size.
+            randomScale = 1.0f + (randomNumber / 100);
+        // Small actor
+        } else {
+            randomNumber = rand() % 90;
+            // Between 10% and 100% size.
+            randomScale = 0.1f + (randomNumber / 100);
+        }
+
+        Actor_SetScale(actor, actor->scale.z * randomScale);
+    });
+}
+
 void InitMods() {
     RegisterTTS();
     RegisterInfiniteMoney();
@@ -1065,5 +1098,6 @@ void InitMods() {
     RegisterEnemyDefeatCounts();
     RegisterAltTrapTypes();
     RegisterRandomizerSheikSpawn();
+    RegisterRandomizedEnemySizes();
     NameTag_RegisterHooks();
 }

soh/soh/SohMenuBar.cpp

@@ -1115,6 +1115,9 @@ void DrawEnhancementsMenu() {
                 "- Random (Seeded): Enemies are randomized based on the current randomizer seed/file\n"
             );
 
+            UIWidgets::PaddedEnhancementCheckbox("Randomized Enemy Sizes", "gRandomizedEnemySizes", true, false);
+            UIWidgets::Tooltip("Enemies and Bosses spawn with random sizes.");
+
             UIWidgets::PaddedEnhancementCheckbox("Ivan the Fairy (Coop Mode)", "gIvanCoopModeEnabled", true, false);
             UIWidgets::Tooltip("Enables Ivan the Fairy upon the next map change. Player 2 can control Ivan and "
                                 "press the C-Buttons to use items and mess with Player 1!");