finish decompiling bike.c (#207)

* decompile first few functions of field_map_obj.c

* formatting

* almost finish decompiling bike.c

* finish decompiling bike.c

1 files changed, 182 insertions, 1 deletions

diff --git a/src/bike.c b/src/bike.c
index c08401010..90c61b815 100644
--- a/src/bike.c
+++ b/src/bike.c
@@ -7,6 +7,7 @@
 #include "metatile_behavior.h"
 #include "songs.h"
 #include "sound.h"
+#include "rom4.h"
 
 struct UnknownStruct1
 {
@@ -19,6 +20,10 @@ struct UnknownStruct1
     u32 unk18;
 };
 
+extern u8 gUnknown_02039250;
+extern u8 gUnknown_02039251;
+extern u8 gUnknown_0202E854;
+
 extern u8 gUnknown_0202E86C[];
 extern u8 gUnknown_0202E874[];
 
@@ -61,10 +66,25 @@ u8 sub_80E5DA0(struct MapObject *, s16, s16, u8, u8);
 extern void sub_80E5E4C();
 extern u8 sub_80E5E70(u8, u8);
 extern void sub_80E6024(void);
-extern u8 sub_80E5EC0();
 extern u8 IsRunningDisallowedByMetatile(u8);
 extern u8 sub_80608A4(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 sub_80E5B60(u16, u16);
+u8 sub_80E5CF4(u16);
+static void sub_80E5C7C(u8);
+static void sub_80E5CB8(u8);
+u8 sub_80E5C2C(void);
+u8 sub_80E5DA0(struct MapObject *mapObject, s16 x, s16 y, u8 direction, u8 metatitleBehavior);
+void sub_80E5E4C();
+u8 sub_80E5E70(u8, u8);
+u8 sub_80E5EC0(u8, u8);
+
 static void (*const gUnknown_083DB594[])(u8) = 
 {
     sub_80E5168,
@@ -822,3 +842,164 @@ u8 sub_80E5DA0(struct MapObject *mapObject, s16 x, s16 y, u8 direction, u8 metat
 
     return r4;
 }
+
+bool8 sub_80E5DEC(u8 tile)
+{
+    if(IsRunningDisallowedByMetatile(tile) != FALSE || gMapHeader.mapType == MAP_TYPE_INDOOR)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+bool8 IsRunningDisallowedByMetatile(u8 tile)
+{
+    if(MetatileBehavior_IsRunningDisallowed(tile) != FALSE)
+        return TRUE;
+    else if(MetatileBehavior_IsFortreeBridge(tile) == FALSE)
+        return FALSE;
+    else if((PlayerGetZCoord() & 1) != 0)
+        return FALSE;
+    else
+        return TRUE;
+}
+
+void sub_80E5E4C(void)
+{
+    if(gUnknown_02039250 != 0 && gUnknown_02039251 < 100)
+        gUnknown_02039251++;
+}
+
+bool8 sub_80E5E70(u8 var1, u8 var2)
+{
+    if (var1 > 2 && var1 < 5)
+    {
+        if (MetatileBehavior_IsIsolatedVerticalRail(var2)
+         || MetatileBehavior_IsVerticalRail(var2))
+            return FALSE;
+    }
+    else
+    {
+        if (MetatileBehavior_IsIsolatedHorizontalRail(var2)
+         || MetatileBehavior_IsHorizontalRail(var2))
+            return FALSE;
+        
+    }
+    return TRUE;
+}
+
+bool8 sub_80E5EC0(u8 var1, u8 var2)
+{
+    if((u8)(var2 - 1) < 2)
+    {
+        if(var1 == 10 || var1 == 12)
+            return FALSE;
+    }
+    else if(var1 == 11 || var1 == 13)
+        return FALSE;
+
+    return TRUE;
+}
+
+bool8 IsBikingDisallowedByPlayer(void)
+{
+    s16 x, y;
+    u8 tileBehavior;
+    
+    if(!(gPlayerAvatar.flags & (PLAYER_AVATAR_FLAG_SURFING | PLAYER_AVATAR_FLAG_4)))
+    {
+        PlayerGetDestCoords(&x, &y);
+        tileBehavior = MapGridGetMetatileBehaviorAt(x, y);
+        if(IsRunningDisallowedByMetatile(tileBehavior) == FALSE)
+            return FALSE;
+    }
+    return TRUE;
+}
+
+bool8 player_should_look_direction_be_enforced_upon_movement(void)
+{
+    if(TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_ACRO_BIKE) != FALSE && MetatileBehavior_IsBumpySlope(gMapObjects[gPlayerAvatar.mapObjectId].mapobj_unk_1E) != FALSE)
+        return FALSE;
+    else
+        return TRUE;
+}
+
+void GetOnOffBike(u8 var)
+{
+    gUnknown_0202E854 = 0;
+    
+    if(gPlayerAvatar.flags & (PLAYER_AVATAR_FLAG_MACH_BIKE | PLAYER_AVATAR_FLAG_ACRO_BIKE))
+    {
+        SetPlayerAvatarTransitionFlags(PLAYER_AVATAR_FLAG_ON_FOOT);
+        sav1_reset_battle_music_maybe();
+        sub_8053E90();
+    }
+    else
+    {
+        SetPlayerAvatarTransitionFlags(var);
+        sav1_set_battle_music_maybe(0x193);
+        sub_8053FB0(0x193);
+    }
+}
+
+void sub_80E5FCC(int var1, int var2)
+{
+    u8 i;
+
+    gPlayerAvatar.unk8 = 0;
+    gPlayerAvatar.unk9 = 0;
+    gPlayerAvatar.unkA = 0;
+    gPlayerAvatar.unkB = 0;
+    gPlayerAvatar.unkC = var1;
+    gPlayerAvatar.unk10 = var2;
+    
+    for(i = 0; i < 8; i++)
+        gPlayerAvatar.unk14[i] = 0;
+    
+    for(i = 0; i < 8; i++)
+        gPlayerAvatar.unk1C[i] = 0;
+}
+
+void sub_80E6010(u8 var)
+{
+    gPlayerAvatar.unkA = var;
+    gPlayerAvatar.unkB = gPlayerAvatar.unkA + (gPlayerAvatar.unkA >> 1); // lazy way of multiplying by 1.5.
+}
+
+void sub_80E6024(void)
+{
+    gPlayerAvatar.unkA = 0;
+    gPlayerAvatar.unkB = 0;
+}
+
+s16 sub_80E6034(void)
+{
+    s16 arr[3];
+
+    memcpy(arr, gUnknown_083DB600, sizeof(arr));
+
+    if (gPlayerAvatar.flags & PLAYER_AVATAR_FLAG_MACH_BIKE)
+        return arr[gPlayerAvatar.unkA];
+    else if (gPlayerAvatar.flags & PLAYER_AVATAR_FLAG_ACRO_BIKE)
+        return 3;
+    else if (gPlayerAvatar.flags & (PLAYER_AVATAR_FLAG_SURFING | PLAYER_AVATAR_FLAG_DASH))
+        return 2;
+    else
+        return 1;
+}
+
+void sub_80E6084(void)
+{
+    s16 x, y;
+    u8 tileBehavior;
+
+    if(gPlayerAvatar.flags & PLAYER_AVATAR_FLAG_ACRO_BIKE)
+    {
+        PlayerGetDestCoords(&x, &y);
+        tileBehavior = MapGridGetMetatileBehaviorAt(x, y);
+        if(MetatileBehavior_IsBumpySlope(tileBehavior) != FALSE)
+        {
+            gPlayerAvatar.unk8 = 2;
+            sub_8059C94(player_get_direction_upper_nybble());
+        }
+    }
+}