Port berry_crush.c part 1 from Emerald

include/berry_crush.h

@@ -1,6 +1,165 @@
 #ifndef GUARD_BERRY_CRUSH_H
 #define GUARD_BERRY_CRUSH_H
 
+struct BerryCrushGame_Player
+{
+    u16 unk0;
+    u16 unk2;
+    union
+    {
+        u8 as_2d_bytes[2][8];
+        u16 as_hwords[8];
+    } unk4;
+    u8 unk14[12];
+};
+
+struct __attribute__((packed, aligned(2))) BerryCrushGame_4E
+{
+    u16 unk0;
+    u16 filler2;
+    u8 unk4_0:1;
+    u8 unk4_1:1;
+    s8 unk5;
+    u16 unk6;
+    u16 unk8;
+    u16 unkA;
+    u16 unkC;
+};
+
+struct __attribute__((packed)) BerryCrushGame_40
+{
+    u8 unk0[2];
+    u16 unk2[6];
+    struct BerryCrushGame_4E unkE;
+};
+
+struct BerryCrushGame_5C
+{
+    u16 unk00;
+    u8 unk02_0:1;
+    u8 unk02_1:1;
+    u8 unk02_2:1;
+    u8 unk02_3:5;
+    u8 unk03;
+    u16 unk04;
+    u16 unk06;
+    u16 unk08;
+    u16 unk0A;
+};
+
+union BerryCrushGame_68
+{
+    struct BerryCrushGame_68_x
+    {
+        struct BerryCrushGame_68_x_SubStruct
+        {
+            s32 unk00;
+            u16 unk04;
+            s16 unk06;
+            u16 unk08;
+            u16 unk0A;
+            u16 unk0C[2][5];
+            u8 filler20[16];
+        } unk00;
+        u8 unk30[12];
+        struct BerryCrushGame_Player others[4];
+        u8 fillerBC[20];
+    } as_four_players;
+    struct BerryCrushGame_68_y
+    {
+        u8 filler00[28];
+        struct BerryCrushGame_Player unk1C[5];
+        u8 fillerBC[20];
+    } as_five_players;
+};
+
+struct BerryCrushGame_138_C
+{
+    u8 unk0;
+    u8 unk1;
+    u8 unk2;
+    s16 unk4;
+    s16 unk6;
+    s16 unk8;
+    s16 unkA;
+};
+
+struct BerryCrushGame_138
+{
+    u8 unk0;
+    u8 unk1;
+    u8 unk2;
+    u8 unk3;
+    s16 unk4;
+    s16 unk6;
+    s16 unk8;
+    const struct BerryCrushGame_138_C *unkC[5];
+    struct Sprite *unk20;
+    struct Sprite *unk24[5];
+    struct Sprite *unk38[5];
+    struct Sprite *unk4C[11];
+    struct Sprite *unk78[2];
+    u8 unk80;
+    u8 filler81;
+    u8 unk82;
+    u8 unk83[5];
+};
+
+struct BerryCrushGame
+{
+    MainCallback unk0;
+    u32 (* unk4)(struct BerryCrushGame *, u8 *);
+    u8 unk8;
+    u8 unk9;
+    u8 unkA;
+    u8 unkB;
+    u8 unkC;
+    u8 unkD;
+    u8 unkE;
+    u8 unkF;
+    u16 unk10;
+    u16 unk12;
+    u16 unk14;
+    u16 unk16;
+    s16 unk18;
+    s16 unk1A;
+    int unk1C;
+    s32 unk20;
+    u8 unk24;
+    u8 unk25_0:1;
+    u8 unk25_1:1;
+    u8 unk25_2:1;
+    u8 unk25_3:1;
+    u8 unk25_4:1;
+    u8 unk25_5:3;
+    u16 unk26;
+    u16 unk28;
+    s16 unk2A;
+    s16 unk2C;
+    s16 unk2E;
+    s16 unk30;
+    s16 unk32;
+    s16 unk34;
+    u8 unk36[0xA];
+    struct BerryCrushGame_40 unk40;
+    struct BerryCrushGame_5C unk5C;
+    union BerryCrushGame_68 unk68;
+    struct BerryCrushGame_138 unk138;
+    u8 unk1C0[0x1000];
+    u8 unk11C0[0x1000];
+    u8 unk21C0[0x1000];
+    u8 unk31C0[0x1000];
+};
+
 void StartBerryCrush(MainCallback callback);
+u32 sub_814B6FC(MainCallback callback);
+void sub_814B8F0(void);
+void sub_814B914(void);
+void sub_814B924(void);
+void sub_814B930(void);
+void sub_814BABC(struct BerryCrushGame *arg0);
+void sub_814BB4C(u16, u8, u8 *);
+void sub_814D564(u8 *, u32, s32, u32, u32, u32, u32);
+void sub_814D9CC(struct BerryCrushGame *arg0);
 
 #endif //GUARD_BERRY_CRUSH_H

include/math_util.h

@@ -3,5 +3,6 @@
 
 s16 sub_80D8B90(s16 y);
 s16 sub_80D8AA0(s16 x, s16 y);
+s32 sub_80D8B68(s32 x, s32 y);
 
 #endif //GUARD_MATH_UTIL_H

include/overworld.h

@@ -189,6 +189,8 @@ void sub_8057F34(void);
 u32 sub_8057EC0(void);
 void sub_8057F70(void);
 void sub_8057F48(void);
+void SetMainCallback1(MainCallback cb);
+void CB1_Overworld(void);
 
 extern u16 gHeldKeyCodeToSend;