through InitCurrentFlashLevelScanlineEffect

asm/overworld.s

@@ -5,135 +5,6 @@
 
 	.text
 
-	thumb_func_start CB2_ContinueSavedGame
-CB2_ContinueSavedGame: @ 8056938
-	push {lr}
-	bl FieldClearVBlankHBlankCallbacks
-	bl StopMapMusic
-	bl ResetSafariZoneFlag_
-	bl LoadSaveblockMapHeader
-	bl sub_80550A8
-	bl UnfreezeObjectEvents
-	bl sub_8054E40
-	bl InitMapFromSavedGame
-	bl PlayTimeCounter_Start
-	bl ScriptContext1_Init
-	bl ScriptContext2_Disable
-	ldr r1, _08056990 @ =gFieldCallback2
-	movs r0, 0
-	str r0, [r1]
-	ldr r1, _08056994 @ =gUnknown_2031DE0
-	movs r0, 0x1
-	strb r0, [r1]
-	bl sav2_x1_query_bit1
-	cmp r0, 0x1
-	bne _0805699C
-	bl sav2_x9_clear_bit1
-	bl SetWarpDestinationToContinueGameWarp
-	bl WarpIntoMap
-	ldr r0, _08056998 @ =CB2_LoadMap
-	bl SetMainCallback2
-	b _080569AC
-	.align 2, 0
-_08056990: .4byte gFieldCallback2
-_08056994: .4byte gUnknown_2031DE0
-_08056998: .4byte CB2_LoadMap
-_0805699C:
-	ldr r0, _080569B0 @ =gFieldCallback
-	ldr r1, _080569B4 @ =sub_8056918
-	str r1, [r0]
-	ldr r0, _080569B8 @ =CB1_Overworld
-	bl SetMainCallback1
-	bl CB2_ReturnToField
-_080569AC:
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080569B0: .4byte gFieldCallback
-_080569B4: .4byte sub_8056918
-_080569B8: .4byte CB1_Overworld
-	thumb_func_end CB2_ContinueSavedGame
-
-	thumb_func_start FieldClearVBlankHBlankCallbacks
-FieldClearVBlankHBlankCallbacks: @ 80569BC
-	push {lr}
-	bl sub_80CC87C
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _080569CE
-	bl CloseLink
-_080569CE:
-	ldr r0, _080569E4 @ =gWirelessCommType
-	ldrb r0, [r0]
-	cmp r0, 0
-	beq _080569E8
-	movs r0, 0xC5
-	bl EnableInterrupts
-	movs r0, 0x2
-	bl DisableInterrupts
-	b _080569F4
-	.align 2, 0
-_080569E4: .4byte gWirelessCommType
-_080569E8:
-	movs r0, 0x2
-	bl DisableInterrupts
-	movs r0, 0x1
-	bl EnableInterrupts
-_080569F4:
-	movs r0, 0
-	bl SetVBlankCallback
-	movs r0, 0
-	bl SetHBlankCallback
-	pop {r0}
-	bx r0
-	thumb_func_end FieldClearVBlankHBlankCallbacks
-
-	thumb_func_start SetFieldVBlankCallback
-SetFieldVBlankCallback: @ 8056A04
-	push {lr}
-	ldr r0, _08056A10 @ =VBlankCB_Field
-	bl SetVBlankCallback
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08056A10: .4byte VBlankCB_Field
-	thumb_func_end SetFieldVBlankCallback
-
-	thumb_func_start VBlankCB_Field
-VBlankCB_Field: @ 8056A14
-	push {lr}
-	bl LoadOam
-	bl ProcessSpriteCopyRequests
-	bl ScanlineEffect_InitHBlankDmaTransfer
-	bl FieldUpdateBgTilemapScroll
-	bl TransferPlttBuffer
-	bl TransferTilesetAnimsBuffer
-	pop {r0}
-	bx r0
-	thumb_func_end VBlankCB_Field
-
-	thumb_func_start InitCurrentFlashLevelScanlineEffect
-InitCurrentFlashLevelScanlineEffect: @ 8056A34
-	push {lr}
-	bl Overworld_GetFlashLevel
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0
-	beq _08056A52
-	bl WriteFlashScanlineEffectBuffer
-	ldr r2, _08056A58 @ =gFlashEffectParams
-	ldr r0, [r2]
-	ldr r1, [r2, 0x4]
-	ldr r2, [r2, 0x8]
-	bl ScanlineEffect_SetParams
-_08056A52:
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08056A58: .4byte gFlashEffectParams
-	thumb_func_end InitCurrentFlashLevelScanlineEffect
-
 	thumb_func_start map_loading_iteration_3
 map_loading_iteration_3: @ 8056A5C
 	push {r4,lr}
@@ -1297,7 +1168,7 @@ sub_8057430: @ 8057430
 	strb r0, [r1]
 	bl ResetSafariZoneFlag_
 	bl LoadSaveblockMapHeader
-	bl sub_80550A8
+	bl LoadSaveblockObjEventScripts
 	bl UnfreezeObjectEvents
 	bl sub_8054E40
 	bl InitMapFromSavedGame
@@ -1306,10 +1177,10 @@ sub_8057430: @ 8057430
 	ldr r1, _08057488 @ =gUnknown_2031DE0
 	movs r0, 0x1
 	strb r0, [r1]
-	bl sav2_x1_query_bit1
+	bl UseContinueGameWarp
 	cmp r0, 0x1
 	bne _08057490
-	bl sav2_x9_clear_bit1
+	bl ClearContinueGameWarpStatus
 	bl SetWarpDestinationToContinueGameWarp
 	bl WarpIntoMap
 	ldr r0, _0805748C @ =CB2_LoadMap

data/overworld.s

@@ -5,11 +5,6 @@
 	.section .rodata
 	.align 2, 0
 
-gFlashEffectParams:: @ 826D330
-	.4byte REG_WIN0H
-	.4byte (2 >> 1) | ((DMA_16BIT | DMA_DEST_RELOAD | DMA_SRC_INC | DMA_REPEAT | DMA_START_HBLANK | DMA_ENABLE) << 16)
-	.byte 1, 0
-
 	.align 2
 gUnknown_826D33C:: @ 826D33C
 	.4byte sub_8058684

include/field_camera.h

@@ -33,5 +33,6 @@ void InstallCameraPanAheadCallback(void);
 void DrawDoorMetatileAt(int x, int y, const u16 *data);
 void move_tilemap_camera_to_upper_left_corner(void);
 void CameraUpdate(void);
+void FieldUpdateBgTilemapScroll(void);
 
 #endif //GUARD_FIELD_CAMERA_H

include/field_screen_effect.h

@@ -10,6 +10,7 @@ void sub_807E3EC(void);
 void DoOutwardBarnDoorWipe(void);
 void Task_BarnDoorWipe(u8 taskId);
 void FieldCB_RushInjuredPokemonToCenter(void);
+void WriteFlashScanlineEffectBuffer(u8 flashLevel);
 
 extern const s32 gMaxFlashLevel;
 

include/field_specials.h

@@ -33,5 +33,6 @@ void IncrementResortGorgeousStepCounter(void);
 void IncrementBirthIslandRockStepCount(void);
 void ResetCyclingRoadChallengeData(void);
 void ResetFieldTasksArgs(void);
+bool8 UsedPokemonCenterWarp(void);
 
 #endif // GUARD_FIELD_SPECIALS_H

include/fieldmap.h

@@ -39,5 +39,6 @@ void apply_map_tileset1_tileset2_palette(struct MapLayout const * mapLayout);
 void InitMap(void);
 void copy_map_tileset2_to_vram_2(const struct MapLayout * mapLayout);
 void apply_map_tileset2_palette(const struct MapLayout * mapLayout);
+void InitMapFromSavedGame(void);
 
 #endif //GUARD_FIELDMAP_H

include/load_save.h

@@ -30,6 +30,8 @@ void ApplyNewEncryptionKeyToWord(u32 * word, u32 encryptionKey);
 void ApplyNewEncryptionKeyToHword(u16 * hword, u32 encryptionKey);
 void ClearContinueGameWarpStatus2(void);
 void SetContinueGameWarpStatusToDynamicWarp(void);
-void sub_804C1AC(void);
+void SetContinueGameWarpStatus(void);
+bool32 UseContinueGameWarp(void);
+void ClearContinueGameWarpStatus();
 
 #endif // GUARD_LOAD_SAVE_H

src/field_specials.c

@@ -2037,7 +2037,7 @@ const u16 sPokeCenter1FMaps[] = {
     MAP_UNDEFINED
 };
 
-bool8 sub_80CC87C(void)
+bool8 UsedPokemonCenterWarp(void)
 {
     s32 i;
     u16 mapno = (gLastUsedWarp.mapGroup << 8) + gLastUsedWarp.mapNum;

src/load_save.c

@@ -127,17 +127,17 @@ void MoveSaveBlocks_ResetHeap(void)
     gSaveBlock2Ptr->encryptionKey = encryptionKey;
 }
 
-u32 sav2_x1_query_bit1(void)
+u32 UseContinueGameWarp(void)
 {
     return gSaveBlock2Ptr->specialSaveWarpFlags & CONTINUE_GAME_WARP;
 }
 
-void sav2_x9_clear_bit1(void)
+void ClearContinueGameWarpStatus(void)
 {
     gSaveBlock2Ptr->specialSaveWarpFlags &= ~CONTINUE_GAME_WARP;
 }
 
-void sub_804C1AC(void)
+void SetContinueGameWarpStatus(void)
 {
     gSaveBlock2Ptr->specialSaveWarpFlags |= CONTINUE_GAME_WARP;
 }

src/overworld.c

@@ -1,6 +1,7 @@
 #include "global.h"
 #include "gflib.h"
 #include "event_data.h"
+#include "event_object_movement.h"
 #include "event_scripts.h"
 #include "field_camera.h"
 #include "field_control_avatar.h"
@@ -28,6 +29,7 @@
 #include "roamer.h"
 #include "safari_zone.h"
 #include "save_location.h"
+#include "scanline_effect.h"
 #include "script.h"
 #include "script_pokemon_util.h"
 #include "tileset_anims.h"
@@ -94,11 +96,12 @@ void CB2_LoadMap2(void);
 void c2_80567AC(void);
 void CB2_ReturnToFieldLocal(void);
 void CB2_ReturnToFieldLink(void);
+void FieldClearVBlankHBlankCallbacks(void);
+void SetFieldVBlankCallback(void);
+void VBlankCB_Field(void);
 void MoveSaveBlocks_ResetHeap_(void);
 void sub_8056E80(void);
 void CB1_UpdateLinkState(void);
-void SetFieldVBlankCallback(void);
-void FieldClearVBlankHBlankCallbacks(void);
 void ResetAllMultiplayerState(void);
 void do_load_map_stuff_loop(u8 *state);
 bool32 sub_8056CD8(u8 *state);
@@ -322,7 +325,7 @@ void sub_8054F68(void)
     }
 }
 
-void sub_80550A8(void)
+void LoadSaveblockObjEventScripts(void)
 {
     int i;
     const struct ObjectEventTemplate * src = gMapHeader.events->objectEvents;
@@ -1572,3 +1575,83 @@ void sub_8056918(void)
         ShowMapNamePopup(FALSE);
     FieldCB_WarpExitFadeFromBlack();
 }
+
+void CB2_ContinueSavedGame(void)
+{
+    FieldClearVBlankHBlankCallbacks();
+    StopMapMusic();
+    ResetSafariZoneFlag_();
+    LoadSaveblockMapHeader();
+    LoadSaveblockObjEventScripts();
+    UnfreezeObjectEvents();
+    sub_8054E40();
+    InitMapFromSavedGame();
+    PlayTimeCounter_Start();
+    ScriptContext1_Init();
+    ScriptContext2_Disable();
+    gFieldCallback2 = NULL;
+    gUnknown_2031DE0 = TRUE;
+    if (UseContinueGameWarp() == TRUE)
+    {
+        ClearContinueGameWarpStatus();
+        SetWarpDestinationToContinueGameWarp();
+        WarpIntoMap();
+        SetMainCallback2(CB2_LoadMap);
+    }
+    else
+    {
+        gFieldCallback = sub_8056918;
+        SetMainCallback1(CB1_Overworld);
+        CB2_ReturnToField();
+    }
+}
+
+void FieldClearVBlankHBlankCallbacks(void)
+{
+    if (UsedPokemonCenterWarp() == TRUE)
+        CloseLink();
+
+    if (gWirelessCommType != 0)
+    {
+        EnableInterrupts(INTR_FLAG_VBLANK | INTR_FLAG_VCOUNT | INTR_FLAG_TIMER3 | INTR_FLAG_SERIAL);
+        DisableInterrupts(INTR_FLAG_HBLANK);
+    }
+    else
+    {
+        DisableInterrupts(INTR_FLAG_HBLANK);
+        EnableInterrupts(INTR_FLAG_VBLANK);
+    }
+
+    SetVBlankCallback(NULL);
+    SetHBlankCallback(NULL);
+}
+
+void SetFieldVBlankCallback(void)
+{
+    SetVBlankCallback(VBlankCB_Field);
+}
+
+void VBlankCB_Field(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    ScanlineEffect_InitHBlankDmaTransfer();
+    FieldUpdateBgTilemapScroll();
+    TransferPlttBuffer();
+    TransferTilesetAnimsBuffer();
+}
+
+void InitCurrentFlashLevelScanlineEffect(void)
+{
+    u8 flashLevel = Overworld_GetFlashLevel();
+    if (flashLevel != 0)
+    {
+        WriteFlashScanlineEffectBuffer(flashLevel);
+        ScanlineEffect_SetParams((struct ScanlineEffectParams){
+            .dmaDest = &REG_WIN0H,
+            .dmaControl = (2 >> 1) | ((DMA_16BIT | DMA_DEST_RELOAD | DMA_SRC_INC | DMA_REPEAT | DMA_START_HBLANK | DMA_ENABLE) << 16),
+            .initState = 1,
+            .unused9 = 0
+        });
+    }
+}

src/post_battle_event_funcs.c

@@ -28,7 +28,7 @@ bool8 EnterHallOfFame(void)
     {
         SetGameStat(GAME_STAT_FIRST_HOF_PLAY_TIME, (gSaveBlock2Ptr->playTimeHours << 16) | (gSaveBlock2Ptr->playTimeMinutes << 8) | gSaveBlock2Ptr->playTimeSeconds);
     }
-    sub_804C1AC();
+    SetContinueGameWarpStatus();
     SetContinueGameWarpToHealLocation(SPAWN_PALLET_TOWN);
     gaveAtLeastOneRibbon = FALSE;
     for (i = 0, r7 = &ribbonState; i < PARTY_SIZE; i++)