progress

src/Main/Main.cpp

@@ -3,7 +3,7 @@
 
 void func_0203b920(void);
 void func_02011da0(void);
-void func_0203cdb8(void);
+void CallStaticInitializers(void);
 void main(void);
 
 void func_02000a78(void);
@@ -93,7 +93,7 @@ ARM void Entry(void) {
 
     func_0203b920();
     func_02011da0();
-    func_0203cdb8();
+    CallStaticInitializers();
     main();
 }
 
@@ -108,11 +108,9 @@ ARM void* func_0200093c(unk32 param1, u32* param2, unk32 param3) {
     return param2;
 }
 
-void AutoloadCallback(void) {
-}
+void AutoloadCallback(void) {}
 
-void func_02000b60(void) {
-}
+void func_02000b60(void) {}
 
 BuildInfo gBuildInfo = {
     .mUnk_00 = data_0204cde0,
@@ -125,10 +123,8 @@ BuildInfo gBuildInfo = {
     .mUnk_1C = 0x04027539,
     .mUnk_20 = 0xDEC00621,
     "\xDE\xC0\x06![SDK+NINTENDO:BACKUP]",
-    "[SDK+MEI:libASR_V1.0.5-CW2.0-SDK4.0]"
+    "[SDK+MEI:libASR_V1.0.5-CW2.0-SDK4.0]",
 };
 
 // non-matching
-void main(void) {
-    data_02049a2c->func_02013394();
-}
+void main(void) { data_02049a2c->func_02013394(); }

src/Main/System/OverlayManager.cpp

@@ -0,0 +1,91 @@
+#include "System/OverlayManager.hpp"
+#include "global.h"
+#include "nitro/Overlay.h"
+
+struct UnkStruct_020ee698 {
+    /* 00 */ unk8 mUnk_00[0x2C];
+    /* 2c */ unk32 mUnk_2c;
+    /* 30 */
+};
+extern UnkStruct_020ee698 data_ov000_020ee698;
+
+struct OverlaySetup {
+    /* 00 */ unk8 mUnk_00;
+    /* 01 */ unk8 mUnk_01;
+    /* 02 */ unk8 mUnk_02;
+    /* 03 */ unk8 mUnk_03;
+    /* 04 */ OverlayId slot1Overlay;
+    /* 08 */ OverlayId slot2Overlay;
+    /* 0c */ OverlayId slot3Overlay;
+    /* 10 */ OverlayId slot12Overlay;
+    /* 14 */ void* mUnk_14;
+    /* 18 */ void* mUnk_18;
+    /* 1c */
+};
+extern OverlaySetup gOverlaySetups[];
+
+extern u32* data_027e0ce0[];
+extern u32 data_0203e0e8[]; // seems to contain overlay IDs
+extern "C" void func_ov007_02102850(u32**);
+extern "C" void func_ov007_021028a0(u32**);
+
+THUMB void OverlayManager::LoadIfNotLoaded(OverlayIndex index, OverlayId id) {
+    OverlayId loadedId = gOverlayManager.mLoadedOverlays[index];
+
+    if (id != loadedId) {
+        this->Unload(index);
+        this->Load(index, id);
+    }
+}
+
+THUMB void OverlayManager::Load(OverlayIndex index, OverlayId id) {
+    if (id != OverlayId_None) {
+        Overlay_Load(NULL, data_0203e0e8[id]);
+    }
+
+    gOverlayManager.mLoadedOverlays[index] = id;
+}
+
+THUMB void OverlayManager::Unload(OverlayIndex index) {
+    OverlayId loadedId = gOverlayManager.mLoadedOverlays[index];
+
+    if (loadedId != OverlayId_None) {
+        Overlay_Unload(NULL, data_0203e0e8[index]);
+        gOverlayManager.mLoadedOverlays[index] = OverlayId_None;
+    }
+}
+
+//! TODO: solve the .word issue with the overlay IDs
+//! both functions should match otherwise
+THUMB void OverlayManager::LoadOverlaySetup(s32 index) {
+    OverlayId overlayId;
+    OverlaySetup* pSetup;
+
+    pSetup = &gOverlaySetups[index];
+
+    this->LoadIfNotLoaded(OverlayIndex_1, pSetup->slot1Overlay);
+    this->LoadIfNotLoaded(OverlayIndex_2, pSetup->slot2Overlay);
+
+    if (index == 5) {
+        func_ov007_02102850(data_027e0ce0);
+    } else {
+        overlayId = pSetup->slot12Overlay;
+
+        if (index == 6 && data_ov000_020ee698.mUnk_2c == 2) {
+            overlayId = OverlayId_61;
+        }
+
+        this->Load(OverlayIndex_3, pSetup->slot3Overlay);
+        this->Load(OverlayIndex_12, overlayId);
+    }
+}
+
+THUMB void OverlayManager::UnloadOverlaySetup() {
+    this->Unload(OverlayIndex_12);
+    this->Unload(OverlayIndex_3);
+
+    if (this->mLoadedOverlays[2] == OverlayId_07) {
+        func_ov007_021028a0(data_027e0ce0);
+        this->Unload(OverlayIndex_2);
+    }
+}