start decompiling bike.c (#203)

* start decompiling bike.c

* decompile more of bike.c

* decompile MovePlayerOnAcroBike and CheckMovementInputAcroBike

1 files changed, 210 insertions, 0 deletions

diff --git a/src/bike.c b/src/bike.c
new file mode 100644
index 000000000..35c6dc97d
--- /dev/null
+++ b/src/bike.c
@@ -0,0 +1,210 @@
+#include "global.h"
+#include "global.fieldmap.h"
+#include "flags.h"
+#include "asm.h"
+#include "field_player_avatar.h"
+
+extern void (*gUnknown_083DB594[])(u8);
+extern void (*gUnknown_083DB5A4[])(u8);
+extern void (*gUnknown_083DB5B0[])(u8);
+extern u8 (*gUnknown_083DB5E4[])(u8 *, u16, u16);
+
+extern void sub_80E6024(void);
+extern u8 sub_80E5E70(u8, u8);
+extern void PlayerOnBikeCollide(u8);
+extern u8 sub_80E5D34(u8);
+
+void MovePlayerOnMachBike(u8, u16, u16);
+u8 CheckMovementInputMachBike(u8 *);
+u8 CheckMovementInputAcroBike(u8 *, u16, u16);
+void sub_80E5168(u8);
+void sub_80E5270(u8);
+void MovePlayerOnAcroBike(u8, u16, u16);
+
+void MovePlayerOnBike(u8 var1, u16 var2, u16 var3)
+{
+    if(gPlayerAvatar.flags & PLAYER_AVATAR_FLAG_MACH_BIKE)
+        MovePlayerOnMachBike(var1, var2, var3);
+    else
+        MovePlayerOnAcroBike(var1, var2, var3);
+}
+
+void MovePlayerOnMachBike(u8 var1, u16 var2, u16 var3)
+{
+    gUnknown_083DB594[CheckMovementInputMachBike(&var1) & 0x3FF](var1); // var2 and var3 arent used?
+}
+
+u8 CheckMovementInputMachBike(u8 *ptr)
+{
+    u8 direction = player_get_direction_upper_nybble();
+
+    if (*ptr == 0)
+    {
+        *ptr = direction;
+        if (gPlayerAvatar.unkB == 0)
+        {
+            gPlayerAvatar.running2 = 0;
+            return 0;
+        }
+        gPlayerAvatar.running2 = 2;
+        return 3;
+    }
+
+    if (*ptr != direction && gPlayerAvatar.running2 != 2)
+    {
+        if (gPlayerAvatar.unkB != 0)
+        {
+            *ptr = direction;
+            gPlayerAvatar.running2 = 2;
+            return 3;
+        }
+        gPlayerAvatar.running2 = 1;
+        return 1;
+    }
+    else
+    {
+        gPlayerAvatar.running2 = 2;
+        return 2;
+    }
+}
+
+void sub_80E5168(u8 var)
+{
+    PlayerFaceDirection(var);
+    sub_80E6024();
+}
+
+void sub_80E517C(u8 var)
+{
+    struct MapObject *mapPtr = &gMapObjects[gPlayerAvatar.mapObjectId];
+
+    if(sub_80E5E70(var, mapPtr->mapobj_unk_1E))
+    {
+        PlayerTurnInPlace(var);
+        sub_80E6024();
+    }
+    else
+        sub_80E5168(mapPtr->mapobj_unk_18);
+}
+
+void sub_80E51C4(u8 var)
+{
+    struct MapObject *mapPtr = &gMapObjects[gPlayerAvatar.mapObjectId];
+    u8 funcVar;
+    
+    if(sub_80E5E70(var, mapPtr->mapobj_unk_1E) == 0)
+    {
+        if(gPlayerAvatar.unkB)
+            sub_80E5270(mapPtr->placeholder18);
+        else
+            sub_80E5168(mapPtr->placeholder18);
+    }
+    else
+    {
+        funcVar = sub_80E5D34(var);
+        if (funcVar > 0 && funcVar < 12)
+        {
+            if(funcVar == 6)
+                PlayerJumpLedge(var);
+            else
+            {
+                sub_80E6024();
+                if((u8)(funcVar - 5) > 3)
+                    PlayerOnBikeCollide(var);
+            }
+        }
+        else
+        {
+            gUnknown_083DB5A4[gPlayerAvatar.unkA](var);
+            gPlayerAvatar.unkB = gPlayerAvatar.unkA + (gPlayerAvatar.unkA >> 1); // same as dividing by 2, but compiler is insistent on >> 1
+            if(gPlayerAvatar.unkA < 2)
+                gPlayerAvatar.unkA++;
+        }
+    }
+}
+
+void sub_80E5270(u8 var)
+{
+    u8 funcVar;
+
+    if(gPlayerAvatar.unkB != 0)
+        gPlayerAvatar.unkA = --gPlayerAvatar.unkB;
+
+    funcVar = sub_80E5D34(var);
+
+    if (funcVar > 0 && funcVar < 12)
+    {
+        if(funcVar == 6)
+            PlayerJumpLedge(var);
+        else
+        {
+            sub_80E6024();
+            if((u8)(funcVar - 5) > 3)
+                PlayerOnBikeCollide(var);
+        }
+    }
+    else
+        gUnknown_083DB5A4[gPlayerAvatar.unkA](var);
+}
+
+void MovePlayerOnAcroBike(u8 var1, u16 var2, u16 var3)
+{
+    gUnknown_083DB5B0[CheckMovementInputAcroBike(&var1, var2, var3) & 0x3FF](var1);
+}
+
+u8 CheckMovementInputAcroBike(u8 *ptr, u16 var1, u16 var2)
+{
+    return gUnknown_083DB5E4[gPlayerAvatar.unk8](ptr, var1, var2);
+}
+
+/*u8 CheckMovementInputAcroBikeNormal(u8 *ptr, u16 var1, u16 var2)
+{
+	u8 playerDir = player_get_direction_upper_nybble();
+	u8 result;
+	gPlayerAvatar.unkA = 0;
+	
+	if(*ptr == 0)
+	{
+		if(var1 & 2)
+		{
+			*ptr = playerDir;
+			gPlayerAvatar.running2 = *ptr;
+			gPlayerAvatar.unk8 = 2;
+			return 3;
+		}
+		else
+		{
+			*ptr = playerDir;
+			gPlayerAvatar.running2 = *ptr;
+			return 0;
+		}
+	}
+	else if(*ptr == playerDir)
+	{
+		if(var2 & 2 && gPlayerAvatar.unkB == 0)
+		{
+			gPlayerAvatar.unkB++;
+			gPlayerAvatar.unk8 = 4;
+			return 11;
+		}
+		else if(gPlayerAvatar.unkB == playerDir)
+		{
+			result = 2;
+			gPlayerAvatar.running2 = result;
+			return result;
+		}
+	}
+	if(gPlayerAvatar.running2 == 2)
+	{
+		result = 2;
+		gPlayerAvatar.running2 = result;
+		return result;
+	}
+	else
+	{
+		gPlayerAvatar.unk8 = 1;
+		gPlayerAvatar.unk9 = *ptr;
+		gPlayerAvatar.running2 = 0;
+		return CheckMovementInputAcroBike(ptr, var1, var2);
+	}
+}*/