Add more later gen fishing mechanics (#5518)

* Add new fishing bite odds and follower boost

* Sticky

* Update item.h

* Update field_player_avatar.c

* Update field_player_avatar.c

include/config/item.h

@@ -38,9 +38,12 @@
 // Vs. Seeker
 #define I_VS_SEEKER_CHARGING        0     // If this flag is assigned, the Vs Seeker functionality will be enabled. When the player has the Vs. Seeker, Match Call rematch functions will stop working.
 
-//Fishing
-#define I_FISHING_CHAIN             FALSE // Introduced in XY, hooking the same Pokémon repeatedly will increase the odds of that mon being shiny. NOTE: This implementation is an approximation of the actual feature, as XY have not been throughoutly documented or datamined.
-#define I_FISHING_MINIGAME          GEN_3 // Each generation uses a variation of reeling in Pokémon once they have been hooked.
-#define I_FISHING_PROXIMITY         FALSE // Introduced in XY, fishing away from other people in enclosed areas will increase the chances of a Pokémon being hooked. NOTE: This implementation is an approximation of the actual feature, as XY have not been throughoutly documented or datamined.
+// Fishing
+#define I_FISHING_BITE_ODDS        GEN_LATEST // In Gen 1 and Gen 2, the Old Rod has a 100% chance for a bite, Good Rod has a 66% chance for a bite, and Super Rod has a 50% chance for a bite. In Gen 3, all rods have a base 50% chance for a bite. In Gen 4 onwards, the Old Rod has a base 25% chance for a bite, Good Rod has a 50% chance for a bite, and Super Rod has a 75% chance for a bite.
+#define I_FISHING_MINIGAME         GEN_3      // Each generation uses a variation of reeling in Pokémon once they have been hooked. NOTE: Only the Gen 1/2 and Gen 3 minigames are implemented right now!
+#define I_FISHING_STICKY_BOOST     GEN_LATEST // In Gen 3, a Pokemon with Suction Cups or Sticky Hold in the first slot of the party causes the chance for a bite to increase by about 35%. In Gen 4 onwards, it doubles the base bite chance.
+#define I_FISHING_FOLLOWER_BOOST   FALSE      // In HGSS, fishing bite odds are increased depending on the friendship of the current following Pokémon.
+#define I_FISHING_CHAIN            FALSE      // Introduced in XY, hooking the same Pokémon repeatedly will increase the odds of that mon being shiny. NOTE: This implementation is an approximation of the actual feature, as XY have not been throughoutly documented or datamined.
+#define I_FISHING_PROXIMITY        FALSE      // Introduced in XY, fishing away from other people in enclosed areas will increase the chances of a Pokémon being hooked. NOTE: This implementation is an approximation of the actual feature, as XY have not been throughoutly documented or datamined.
 
 #endif // GUARD_CONFIG_ITEM_H

src/field_player_avatar.c

@@ -146,8 +146,9 @@ static bool32 Fishing_EndNoMon(struct Task *);
 static void AlignFishingAnimationFrames(void);
 static bool32 DoesFishingMinigameAllowCancel(void);
 static bool32 Fishing_DoesFirstMonInPartyHaveSuctionCupsOrStickyHold(void);
-static bool32 Fishing_RollForBite(bool32);
-static u32 CalculateFishingBiteOdds(bool32);
+static bool32 Fishing_RollForBite(u32, bool32);
+static u32 CalculateFishingBiteOdds(u32, bool32);
+static u32 CalculateFishingFollowerBoost(void);
 static u32 CalculateFishingProximityBoost(u32 odds);
 static void GetCoordinatesAroundBobber(s16[], s16[][AXIS_COUNT], u32);
 static u32 CountQualifyingTiles(s16[][AXIS_COUNT], s16 player[], u8 facingDirection, struct ObjectEvent *objectEvent, bool32 isTileLand[]);
@@ -1725,7 +1726,20 @@ static void Task_WaitStopSurfing(u8 taskId)
 
 #define FISHING_PROXIMITY_BOOST 4
 #define FISHING_STICKY_BOOST    36
-#define FISHING_DEFAULT_ODDS    50
+
+#if I_FISHING_BITE_ODDS >= GEN_4
+    #define FISHING_OLD_ROD_ODDS 75
+    #define FISHING_GOOD_ROD_ODDS 50
+    #define FISHING_SUPER_ROD_ODDS 25
+#elif I_FISHING_BITE_ODDS >= GEN_3
+    #define FISHING_OLD_ROD_ODDS 50
+    #define FISHING_GOOD_ROD_ODDS 50
+    #define FISHING_SUPER_ROD_ODDS 50
+#else
+    #define FISHING_OLD_ROD_ODDS 0
+    #define FISHING_GOOD_ROD_ODDS 33
+    #define FISHING_SUPER_ROD_ODDS 50
+#endif
 
 enum
 {
@@ -1902,10 +1916,10 @@ static bool32 Fishing_CheckForBite(struct Task *task)
     firstMonHasSuctionOrSticky = Fishing_DoesFirstMonInPartyHaveSuctionCupsOrStickyHold();
 
     if(firstMonHasSuctionOrSticky)
-        bite = Fishing_RollForBite(firstMonHasSuctionOrSticky);
+        bite = Fishing_RollForBite(task->tFishingRod, firstMonHasSuctionOrSticky);
 
     if (!bite)
-        bite = Fishing_RollForBite(FALSE);
+        bite = Fishing_RollForBite(task->tFishingRod, FALSE);
 
     if (!bite)
         task->tStep = FISHING_NOT_EVEN_NIBBLE;
@@ -2127,22 +2141,58 @@ static bool32 Fishing_DoesFirstMonInPartyHaveSuctionCupsOrStickyHold(void)
     return (ability == ABILITY_SUCTION_CUPS || ability == ABILITY_STICKY_HOLD);
 }
 
-static bool32 Fishing_RollForBite(bool32 isStickyHold)
+static bool32 Fishing_RollForBite(u32 rod, bool32 isStickyHold)
 {
-    return ((Random() % 100) > CalculateFishingBiteOdds(isStickyHold));
+    return ((Random() % 100) > CalculateFishingBiteOdds(rod, isStickyHold));
 }
 
-static u32 CalculateFishingBiteOdds(bool32 isStickyHold)
+static u32 CalculateFishingBiteOdds(u32 rod, bool32 isStickyHold)
 {
-    u32 odds = FISHING_DEFAULT_ODDS;
+    u32 odds;
+
+    if (rod == OLD_ROD)
+        odds = FISHING_OLD_ROD_ODDS;
+    if (rod == GOOD_ROD)
+        odds = FISHING_GOOD_ROD_ODDS;
+    if (rod == SUPER_ROD)
+        odds = FISHING_SUPER_ROD_ODDS;
+
+    odds -= CalculateFishingFollowerBoost();
 
     if (isStickyHold)
-        odds -= FISHING_STICKY_BOOST;
+    {
+        if (I_FISHING_STICKY_BOOST >= GEN_4)
+            odds -= (100 - odds);
+        else
+            odds -= FISHING_STICKY_BOOST;
+    }
 
     odds -= CalculateFishingProximityBoost(odds);
+
     return odds;
 }
 
+static u32 CalculateFishingFollowerBoost()
+{
+    u32 friendship;
+    struct Pokemon *mon = GetFirstLiveMon();
+
+    if (!I_FISHING_FOLLOWER_BOOST || !mon)
+        return 0;
+
+    friendship = GetMonData(mon, MON_DATA_FRIENDSHIP);
+    if (friendship >= 250)
+        return 50;
+    else if (friendship >= 200)
+        return 40;
+    else if (friendship >= 150)
+        return 30;
+    else if (friendship >= 100)
+        return 20;
+    else
+        return 0;
+}
+
 static u32 CalculateFishingProximityBoost(u32 odds)
 {
     s16 player[AXIS_COUNT], bobber[AXIS_COUNT];