#ifndef GUARD_BATTLE_H
#define GUARD_BATTLE_H

#include "global.h"
#include "constants/battle.h"
#include "battle_util.h"
#include "battle_script_commands.h"
#include "battle_main.h"
#include "battle_ai_switch_items.h"
#include "battle_gfx_sfx_util.h"
#include "battle_util2.h"
#include "battle_bg.h"

/*
    Banks are a name given to what could be called a 'battlerId' or 'monControllerId'.
    Each bank has a value consisting of two bits.
    0x1 bit is responsible for the side, 0 = player's side, 1 = opponent's side.
    0x2 bit is responsible for the id of sent out pokemon. 0 means it's the first sent out pokemon, 1 it's the second one. (Triple battle didn't exist at the time yet.)
*/

#define IDENTITY_PLAYER_MON1        0
#define IDENTITY_OPPONENT_MON1      1
#define IDENTITY_PLAYER_MON2        2
#define IDENTITY_OPPONENT_MON2      3

#define SIDE_PLAYER     0x0
#define SIDE_OPPONENT   0x1

#define GET_BATTLER_POSITION(battler)((gBattlerPositions[battler]))
#define GET_BATTLER_SIDE(battler)((GetBattlerPosition(battler) & BIT_SIDE))
#define GET_BATTLER_SIDE2(battler)((GET_BATTLER_POSITION(battler) & BIT_SIDE))

#define TRAINER_OPPONENT_3FE        0x3FE
#define TRAINER_OPPONENT_C00        0xC00
#define TRAINER_OPPONENT_800        0x800
#define STEVEN_PARTNER_ID           0xC03
#define SECRET_BASE_OPPONENT        0x400

#define BATTLE_WON                  0x1
#define BATTLE_LOST                 0x2
#define BATTLE_DREW                 0x3
#define BATTLE_RAN                  0x4
#define BATTLE_PLAYER_TELEPORTED    0x5
#define BATTLE_POKE_FLED            0x6
#define BATTLE_CAUGHT               0x7
#define BATTLE_SAFARI_OUT_OF_BALLS  0x8
#define BATTLE_FORFEITED            0x9
#define BATTLE_OPPONENT_TELEPORTED  0xA

#define OUTCOME_LINK_BATTLE_RUN      0x80

#define STATUS_NONE             0x0
#define STATUS_SLEEP            0x7
#define STATUS_POISON           0x8
#define STATUS_BURN             0x10
#define STATUS_FREEZE           0x20
#define STATUS_PARALYSIS        0x40
#define STATUS_TOXIC_POISON     0x80
#define STATUS_TOXIC_COUNTER    0xF00

#define STATUS_PSN_ANY          ((STATUS_POISON | STATUS_TOXIC_POISON))
#define STATUS_ANY              ((STATUS_SLEEP | STATUS_POISON | STATUS_BURN | STATUS_FREEZE | STATUS_PARALYSIS | STATUS_TOXIC_POISON))

#define SIDE_STATUS_REFLECT          (1 << 0)
#define SIDE_STATUS_LIGHTSCREEN      (1 << 1)
#define SIDE_STATUS_X4               (1 << 2)
#define SIDE_STATUS_SPIKES           (1 << 4)
#define SIDE_STATUS_SAFEGUARD        (1 << 5)
#define SIDE_STATUS_FUTUREATTACK     (1 << 6)
#define SIDE_STATUS_MIST             (1 << 8)
#define SIDE_STATUS_SPIKES_DAMAGED   (1 << 9)

#define B_ACTION_USE_MOVE                  0
#define B_ACTION_USE_ITEM                  1
#define B_ACTION_SWITCH                    2
#define B_ACTION_RUN                       3
#define B_ACTION_SAFARI_WATCH_CAREFULLY    4
#define B_ACTION_SAFARI_BALL               5
#define B_ACTION_SAFARI_POKEBLOCK          6
#define B_ACTION_SAFARI_GO_NEAR            7
#define B_ACTION_SAFARI_RUN                8
#define B_ACTION_9                         9
#define B_ACTION_EXEC_SCRIPT               10
#define B_ACTION_TRY_FINISH                11
#define B_ACTION_FINISHED                  12
#define B_ACTION_CANCEL_PARTNER            12 // when choosing an action
#define B_ACTION_NOTHING_FAINTED           13 // when choosing an action
#define B_ACTION_NONE                      0xFF

#define MOVESTATUS_MISSED             (1 << 0)
#define MOVESTATUS_SUPEREFFECTIVE     (1 << 1)
#define MOVESTATUS_NOTVERYEFFECTIVE   (1 << 2)
#define MOVESTATUS_NOTAFFECTED        (1 << 3)
#define MOVESTATUS_ONEHITKO           (1 << 4)
#define MOVESTATUS_FAILED             (1 << 5)
#define MOVESTATUS_ENDURED            (1 << 6)
#define MOVESTATUS_HUNGON             (1 << 7)

#define MOVESTATUS_NOEFFECT ((MOVESTATUS_MISSED | MOVESTATUS_NOTAFFECTED | MOVESTATUS_FAILED))

#define MAX_TRAINER_ITEMS 4
#define MAX_MON_MOVES 4

#define BATTLE_TERRAIN_GRASS        0
#define BATTLE_TERRAIN_LONG_GRASS   1
#define BATTLE_TERRAIN_SAND         2
#define BATTLE_TERRAIN_UNDERWATER   3
#define BATTLE_TERRAIN_WATER        4
#define BATTLE_TERRAIN_POND         5
#define BATTLE_TERRAIN_ROCK         6
#define BATTLE_TERRAIN_CAVE         7
#define BATTLE_TERRAIN_INSIDE       8
#define BATTLE_TERRAIN_PLAIN        9

// array entries for battle communication
#define MULTIUSE_STATE          0x0
#define CURSOR_POSITION         0x1
#define TASK_ID                 0x1 // task Id and cursor position share the same field
#define SPRITES_INIT_STATE1     0x1 // shares the Id as well
#define SPRITES_INIT_STATE2     0x2
#define MOVE_EFFECT_BYTE        0x3
#define ACTIONS_CONFIRMED_COUNT 0x4
#define MULTISTRING_CHOOSER     0x5
#define MSG_DISPLAY             0x7
#define BATTLE_COMMUNICATION_ENTRIES_COUNT  0x8

#define MOVE_TARGET_SELECTED          0x0
#define MOVE_TARGET_DEPENDS           0x1
#define MOVE_TARGET_USER_OR_SELECTED  0x2
#define MOVE_TARGET_RANDOM            0x4
#define MOVE_TARGET_BOTH              0x8
#define MOVE_TARGET_USER              0x10
#define MOVE_TARGET_FOES_AND_ALLY     0x20
#define MOVE_TARGET_OPPONENTS_FIELD   0x40

// defines for the u8 array gTypeEffectiveness
#define TYPE_EFFECT_ATK_TYPE(i)((gTypeEffectiveness[i + 0]))
#define TYPE_EFFECT_DEF_TYPE(i)((gTypeEffectiveness[i + 1]))
#define TYPE_EFFECT_MULTIPLIER(i)((gTypeEffectiveness[i + 2]))

// defines for the gTypeEffectiveness multipliers
#define TYPE_MUL_NO_EFFECT          0
#define TYPE_MUL_NOT_EFFECTIVE      5
#define TYPE_MUL_NORMAL             10
#define TYPE_MUL_SUPER_EFFECTIVE    20

// special type table Ids
#define TYPE_FORESIGHT  0xFE
#define TYPE_ENDTABLE   0xFF

// for battle script commands
#define CMP_EQUAL               0x0
#define CMP_NOT_EQUAL           0x1
#define CMP_GREATER_THAN        0x2
#define CMP_LESS_THAN           0x3
#define CMP_COMMON_BITS         0x4
#define CMP_NO_COMMON_BITS      0x5

struct TrainerMonNoItemDefaultMoves
{
    u16 iv;
    u8 lvl;
    u16 species;
};

struct TrainerMonItemDefaultMoves
{
    u16 iv;
    u8 lvl;
    u16 species;
    u16 heldItem;
};

struct TrainerMonNoItemCustomMoves
{
    u16 iv;
    u8 lvl;
    u16 species;
    u16 moves[4];
};

struct TrainerMonItemCustomMoves
{
    u16 iv;
    u8 lvl;
    u16 species;
    u16 heldItem;
    u16 moves[4];
};

union TrainerMonPtr
{
    struct TrainerMonNoItemDefaultMoves *NoItemDefaultMoves;
    struct TrainerMonNoItemCustomMoves *NoItemCustomMoves;
    struct TrainerMonItemDefaultMoves *ItemDefaultMoves;
    struct TrainerMonItemCustomMoves *ItemCustomMoves;
};

struct Trainer
{
    /*0x00*/ u8 partyFlags;
    /*0x01*/ u8 trainerClass;
    /*0x02*/ u8 encounterMusic_gender; // last bit is gender
    /*0x03*/ u8 trainerPic;
    /*0x04*/ u8 trainerName[12];
    /*0x10*/ u16 items[4];
    /*0x18*/ bool8 doubleBattle;
    /*0x1C*/ u32 aiFlags;
    /*0x20*/ u8 partySize;
    /*0x24*/ union TrainerMonPtr party;
};

#define PARTY_FLAG_CUSTOM_MOVES     0x1
#define PARTY_FLAG_HAS_ITEM         0x2

extern const struct Trainer gTrainers[];

#define TRAINER_ENCOUNTER_MUSIC(trainer)((gTrainers[trainer].encounterMusic_gender & 0x7F))

struct ResourceFlags
{
    u32 flags[4];
};

#define RESOURCE_FLAG_FLASH_FIRE 1

struct DisableStruct
{
    /*0x00*/ u32 transformedMonPersonality;
    /*0x04*/ u16 disabledMove;
    /*0x06*/ u16 encoredMove;
    /*0x08*/ u8 protectUses;
    /*0x09*/ u8 stockpileCounter;
    /*0x0A*/ u8 substituteHP;
    /*0x0B*/ u8 disableTimer : 4;
    /*0x0B*/ u8 disableTimerStartValue : 4;
    /*0x0C*/ u8 encoredMovePos;
    /*0x0D*/ u8 unkD;
    /*0x0E*/ u8 encoreTimer : 4;
    /*0x0E*/ u8 encoreTimerStartValue : 4;
    /*0x0F*/ u8 perishSongTimer : 4;
    /*0x0F*/ u8 perishSongTimerStartValue : 4;
    /*0x10*/ u8 furyCutterCounter;
    /*0x11*/ u8 rolloutTimer : 4;
    /*0x11*/ u8 rolloutTimerStartValue : 4;
    /*0x12*/ u8 chargeTimer : 4;
    /*0x12*/ u8 chargeTimerStartValue : 4;
    /*0x13*/ u8 tauntTimer:4;
    /*0x13*/ u8 tauntTimer2:4;
    /*0x14*/ u8 battlerPreventingEscape;
    /*0x15*/ u8 battlerWithSureHit;
    /*0x16*/ u8 isFirstTurn;
    /*0x17*/ u8 unk17;
    /*0x18*/ u8 truantCounter : 1;
    /*0x18*/ u8 truantSwitchInHack : 1; // unused? 
    /*0x18*/ u8 unk18_a_2 : 2;
    /*0x18*/ u8 mimickedMoves : 4;
    /*0x19*/ u8 rechargeTimer;
    /*0x1A*/ u8 unk1A[2];
};

extern struct DisableStruct gDisableStructs[MAX_BATTLERS_COUNT];

struct ProtectStruct
{
    /* field_0 */
    u32 protected:1;
    u32 endured:1;
    u32 noValidMoves:1;
    u32 helpingHand:1;
    u32 bounceMove:1;
    u32 stealMove:1;
    u32 flag0Unknown:1;
    u32 prlzImmobility:1;
    /* field_1 */
    u32 confusionSelfDmg:1;
    u32 targetNotAffected:1;
    u32 chargingTurn:1;
    u32 fleeFlag:2; // for RunAway and Smoke Ball
    u32 usedImprisonedMove:1;
    u32 loveImmobility:1;
    u32 usedDisabledMove:1;
    /* field_2 */
    u32 usedTauntedMove:1;      // 0x1
    u32 flag2Unknown:1;         // 0x2
    u32 flinchImmobility:1;     // 0x4
    u32 notFirstStrike:1;       // 0x8
    u32 flag_x10 : 1;           // 0x10
    u32 flag_x20 : 1;           // 0x20
    u32 flag_x40 : 1;           // 0x40
    u32 flag_x80 : 1;           // 0x80
    /* field_3 */
    u32 field3 : 8;

    /* field_4 */ u32 physicalDmg;
    /* field_8 */ u32 specialDmg;
    /* field_C */ u8 physicalBattlerId;
    /* field_D */ u8 specialBattlerId;
    /* field_E */ u16 fieldE;
};

extern struct ProtectStruct gProtectStructs[MAX_BATTLERS_COUNT];

struct SpecialStatus
{
    u8 statLowered : 1;             // 0x1
    u8 lightningRodRedirected : 1;  // 0x2
    u8 restoredBattlerSprite: 1;    // 0x4
    u8 intimidatedMon : 1;          // 0x8
    u8 traced : 1;                  // 0x10
    u8 ppNotAffectedByPressure : 1;
    u8 flag40 : 1;
    u8 focusBanded : 1;
    u8 field1[3];
    s32 dmg;
    s32 physicalDmg;
    s32 specialDmg;
    u8 physicalBattlerId;
    u8 specialBattlerId;
    u8 field12;
    u8 field13;
};

extern struct SpecialStatus gSpecialStatuses[MAX_BATTLERS_COUNT];

struct SideTimer
{
    /*0x00*/ u8 reflectTimer;
    /*0x01*/ u8 reflectBattlerId;
    /*0x02*/ u8 lightscreenTimer;
    /*0x03*/ u8 lightscreenBattlerId;
    /*0x04*/ u8 mistTimer;
    /*0x05*/ u8 mistBattlerId;
    /*0x06*/ u8 safeguardTimer;
    /*0x07*/ u8 safeguardBattlerId;
    /*0x08*/ u8 followmeTimer;
    /*0x09*/ u8 followmeTarget;
    /*0x0A*/ u8 spikesAmount;
    /*0x0B*/ u8 fieldB;
};

extern struct SideTimer gSideTimers[];

struct WishFutureKnock
{
    u8 futureSightCounter[MAX_BATTLERS_COUNT];
    u8 futureSightAttacker[MAX_BATTLERS_COUNT];
    s32 futureSightDmg[MAX_BATTLERS_COUNT];
    u16 futureSightMove[MAX_BATTLERS_COUNT];
    u8 wishCounter[MAX_BATTLERS_COUNT];
    u8 wishMonId[MAX_BATTLERS_COUNT];
    u8 weatherDuration;
    u8 knockedOffMons[2];
};

extern struct WishFutureKnock gWishFutureKnock;

struct AI_ThinkingStruct
{
    u8 aiState;
    u8 movesetIndex;
    u16 moveConsidered;
    s8 score[4];
    u32 funcResult;
    u32 aiFlags;
    u8 aiAction;
    u8 aiLogicId;
    u8 filler12[6];
    u8 simulatedRNG[4];
};

extern u8 gActiveBattler;
extern u8 gBattlerTarget;
extern u8 gAbsentBattlerFlags;

// script's table id to bit
#define AI_SCRIPT_CHECK_BAD_MOVE (1 << 0)
#define AI_SCRIPT_TRY_TO_FAINT (1 << 1)
#define AI_SCRIPT_CHECK_VIABILITY (1 << 2)
#define AI_SCRIPT_SETUP_FIRST_TURN (1 << 3)
#define AI_SCRIPT_RISKY (1 << 4)
#define AI_SCRIPT_PREFER_STRONGEST_MOVE (1 << 5)
#define AI_SCRIPT_PREFER_BATON_PASS (1 << 6)
#define AI_SCRIPT_DOUBLE_BATTLE (1 << 7)
#define AI_SCRIPT_HP_AWARE (1 << 8)
#define AI_SCRIPT_UNKNOWN (1 << 9)
// 10 - 28 are not used
#define AI_SCRIPT_ROAMING (1 << 29)
#define AI_SCRIPT_SAFARI (1 << 30)
#define AI_SCRIPT_FIRST_BATTLE (1 << 31)

extern struct BattlePokemon gBattleMons[MAX_BATTLERS_COUNT];

struct UsedMoves
{
    u16 moves[MAX_BATTLERS_COUNT];
    u16 unknown[MAX_BATTLERS_COUNT];
};

struct BattleHistory
{
    /*0x00*/ u16 usedMoves[2][8]; // 0xFFFF means move not used (confuse self hit, etc)
    /*0x20*/ u8 abilities[MAX_BATTLERS_COUNT / 2];
    /*0x22*/ u8 itemEffects[MAX_BATTLERS_COUNT / 2];
    /*0x24*/ u16 trainerItems[MAX_BATTLERS_COUNT];
    /*0x2C*/ u8 itemsNo;
};

struct BattleScriptsStack
{
    const u8 *ptr[8];
    u8 size;
};

struct BattleCallbacksStack
{
    void (*function[8])(void);
    u8 size;
};

struct StatsArray
{
    u16 stats[NUM_STATS];
};

struct BattleResources
{
    struct SecretBaseRecord *secretBase;
    struct ResourceFlags *flags;
    struct BattleScriptsStack *battleScriptsStack;
    struct BattleCallbacksStack *battleCallbackStack;
    struct StatsArray *beforeLvlUp;
    struct AI_ThinkingStruct *ai;
    struct BattleHistory *battleHistory;
    struct BattleScriptsStack *AI_ScriptsStack;
};

extern struct BattleResources *gBattleResources;

#define BATTLESCRIPTS_STACK     (gBattleResources->battleScriptsStack)
#define BATTLE_CALLBACKS_STACK  (gBattleResources->battleCallbackStack)
#define BATTLE_LVLUP_STATS      (gBattleResources->statsBeforeLvlUp)

struct BattleResults
{
    u8 playerFaintCounter;    // 0x0
    u8 opponentFaintCounter;  // 0x1
    u8 playerSwitchesCounter; // 0x2
    u8 numHealingItemsUsed;   // 0x3
    u8 numRevivesUsed;        // 0x4
    u8 playerMonWasDamaged:1; // 0x5
    u8 usedMasterBall:1;      // 0x5
    u8 caughtMonBall:4;       // 0x5
    u8 shinyWildMon:1;        // 0x5
    u8 unk5_7:1;              // 0x5
    u16 playerMon1Species;    // 0x6
    u8 playerMon1Name[11];    // 0x8
    u8 battleTurnCounter;     // 0x13
    u8 playerMon2Name[11];    // 0x14
    u8 pokeblockThrows;       // 0x1F
    u16 lastOpponentSpecies;  // 0x20
    u16 lastUsedMovePlayer;   // 0x22
    u16 lastUsedMoveOpponent; // 0x24
    u16 playerMon2Species;    // 0x26
    u16 caughtMonSpecies;     // 0x28
    u8 caughtMonNick[10];     // 0x2A
    u8 filler34[2];
    u8 catchAttempts[11];     // 0x36
};

extern struct BattleResults gBattleResults;

struct BattleStruct
{
    u8 turnEffectsTracker;
    u8 turnEffectsBattlerId;
    u8 filler2;
    u8 turnCountersTracker;
    u8 wrappedMove[MAX_BATTLERS_COUNT * 2]; // Leftover from Ruby's ewram access.
    u8 moveTarget[MAX_BATTLERS_COUNT];
    u8 expGetterMonId;
    u8 field_11;
    u8 wildVictorySong;
    u8 dynamicMoveType;
    u8 wrappedBy[4];
    u16 assistPossibleMoves[PARTY_SIZE * MAX_MON_MOVES]; // 6 mons, each of them knowing 4 moves
    u8 focusPunchBattlerId;
    u8 battlerPreventingSwitchout;
    u8 moneyMultiplier;
    u8 savedTurnActionNumber;
    u8 switchInAbilitiesCounter;
    u8 faintedActionsState;
    u8 faintedActionsBattlerId;
    u8 field_4F;
    u16 expValue;
    u8 field_52;
    u8 sentInPokes;
    bool8 selectionScriptFinished[MAX_BATTLERS_COUNT];
    u8 field_58[4];
    u8 monToSwitchIntoId[MAX_BATTLERS_COUNT];
    u8 field_60[4][3];
    u8 runTries;
    u8 caughtMonNick[11];
    u8 field_78;
    u8 safariGoNearCounter;
    u8 safariPkblThrowCounter;
    u8 safariEscapeFactor;
    u8 safariCatchFactor;
    u8 linkBattleVsSpriteId_V;
    u8 linkBattleVsSpriteId_S;
    u8 formToChangeInto;
    u8 chosenMovePositions[MAX_BATTLERS_COUNT];
    u8 stateIdAfterSelScript[MAX_BATTLERS_COUNT];
    u8 field_88;
    u8 field_89;
    u8 field_8A;
    u8 field_8B;
    u8 field_8C;
    u8 field_8D;
    u8 stringMoveType;
    u8 expGetterBattlerId;
    u8 field_90;
    u8 field_91;
    u8 AI_monToSwitchIntoId[MAX_BATTLERS_COUNT];
    u8 field_96;
    u8 field_97;
    u8 lastTakenMove[MAX_BATTLERS_COUNT * 2 * 2]; // ask gamefreak why they declared it that way
    u16 hpOnSwitchout[2];
    u8 abilityPreventingSwitchout;
    u8 hpScale;
    u8 field_AE;
    u8 field_AF;
    u8 field_B0;
    u8 field_B1;
    u8 field_B2;
    u8 field_B3;
    u8 synchronizeMoveEffect;
    u8 field_B5;
    u8 field_B6;
    u8 atkCancellerTracker;
    u16 usedHeldItems[MAX_BATTLERS_COUNT];
    u8 chosenItem[4]; // why is this an u8?
    u8 AI_itemType[2];
    u8 AI_itemFlags[2];
    u16 choicedMove[MAX_BATTLERS_COUNT];
    u16 changedItems[MAX_BATTLERS_COUNT];
    u8 intimidateBattler;
    u8 switchInItemsCounter;
    u8 arenaTurnCounter; // not used in FR? 
    u8 turnSideTracker;
    u8 fillerDC[0xDF-0xDC];
    u8 givenExpMons;
    u8 lastTakenMoveFrom[MAX_BATTLERS_COUNT * MAX_BATTLERS_COUNT * 2];
    u16 castformPalette[MAX_BATTLERS_COUNT][16];
    u8 wishPerishSongState;
    u8 wishPerishSongBattlerId;
    u8 field_182;
    u8 field_183;
    u8 field_184[124]; // currently unknown
}; // size == 0x200 bytes

extern struct BattleStruct *gBattleStruct;

#define GET_MOVE_TYPE(move, typeArg)                        \
{                                                           \
    if (gBattleStruct->dynamicMoveType)                     \
        typeArg = gBattleStruct->dynamicMoveType & 0x3F;    \
    else                                                    \
        typeArg = gBattleMoves[move].type;                  \
}

#define IS_TYPE_PHYSICAL(moveType)(moveType < TYPE_MYSTERY)
#define IS_TYPE_SPECIAL(moveType)(moveType > TYPE_MYSTERY)
#define TARGET_TURN_DAMAGED ((gSpecialStatuses[gBattlerTarget].physicalDmg != 0 || gSpecialStatuses[gBattlerTarget].specialDmg != 0))
#define IS_BATTLER_OF_TYPE(battlerId, type)((gBattleMons[battlerId].type1 == type || gBattleMons[battlerId].type2 == type))
#define SET_BATTLER_TYPE(battlerId, type)   \
{                                           \
    gBattleMons[battlerId].type1 = type;    \
    gBattleMons[battlerId].type2 = type;    \
}

#define MOVE_EFFECT_SLEEP               0x1
#define MOVE_EFFECT_POISON              0x2
#define MOVE_EFFECT_BURN                0x3
#define MOVE_EFFECT_FREEZE              0x4
#define MOVE_EFFECT_PARALYSIS           0x5
#define MOVE_EFFECT_TOXIC               0x6
#define MOVE_EFFECT_CONFUSION           0x7
#define MOVE_EFFECT_FLINCH              0x8
#define MOVE_EFFECT_TRI_ATTACK          0x9
#define MOVE_EFFECT_UPROAR              0xA
#define MOVE_EFFECT_PAYDAY              0xB
#define MOVE_EFFECT_CHARGING            0xC
#define MOVE_EFFECT_WRAP                0xD
#define MOVE_EFFECT_RECOIL_25           0xE
#define MOVE_EFFECT_ATK_PLUS_1          0xF
#define MOVE_EFFECT_DEF_PLUS_1          0x10
#define MOVE_EFFECT_SPD_PLUS_1          0x11
#define MOVE_EFFECT_SP_ATK_PLUS_1       0x12
#define MOVE_EFFECT_SP_DEF_PLUS_1       0x13
#define MOVE_EFFECT_ACC_PLUS_1          0x14
#define MOVE_EFFECT_EVS_PLUS_1          0x15
#define MOVE_EFFECT_ATK_MINUS_1         0x16
#define MOVE_EFFECT_DEF_MINUS_1         0x17
#define MOVE_EFFECT_SPD_MINUS_1         0x18
#define MOVE_EFFECT_SP_ATK_MINUS_1      0x19
#define MOVE_EFFECT_SP_DEF_MINUS_1      0x1A
#define MOVE_EFFECT_ACC_MINUS_1         0x1B
#define MOVE_EFFECT_EVS_MINUS_1         0x1C
#define MOVE_EFFECT_RECHARGE            0x1D
#define MOVE_EFFECT_RAGE                0x1E
#define MOVE_EFFECT_STEAL_ITEM          0x1F
#define MOVE_EFFECT_PREVENT_ESCAPE      0x20
#define MOVE_EFFECT_NIGHTMARE           0x21
#define MOVE_EFFECT_ALL_STATS_UP        0x22
#define MOVE_EFFECT_RAPIDSPIN           0x23
#define MOVE_EFFECT_REMOVE_PARALYSIS    0x24
#define MOVE_EFFECT_ATK_DEF_DOWN        0x25
#define MOVE_EFFECT_RECOIL_33_PARALYSIS 0x26
#define MOVE_EFFECT_ATK_PLUS_2          0x27
#define MOVE_EFFECT_DEF_PLUS_2          0x28
#define MOVE_EFFECT_SPD_PLUS_2          0x29
#define MOVE_EFFECT_SP_ATK_PLUS_2       0x2A
#define MOVE_EFFECT_SP_DEF_PLUS_2       0x2B
#define MOVE_EFFECT_ACC_PLUS_2          0x2C
#define MOVE_EFFECT_EVS_PLUS_2          0x2D
#define MOVE_EFFECT_ATK_MINUS_2         0x2E
#define MOVE_EFFECT_DEF_MINUS_2         0x2F
#define MOVE_EFFECT_SPD_MINUS_2         0x30
#define MOVE_EFFECT_SP_ATK_MINUS_2      0x31
#define MOVE_EFFECT_SP_DEF_MINUS_2      0x32
#define MOVE_EFFECT_ACC_MINUS_2         0x33
#define MOVE_EFFECT_EVS_MINUS_2         0x34
#define MOVE_EFFECT_THRASH              0x35
#define MOVE_EFFECT_KNOCK_OFF           0x36
#define MOVE_EFFECT_NOTHING_37          0x37
#define MOVE_EFFECT_NOTHING_38          0x38
#define MOVE_EFFECT_NOTHING_39          0x39
#define MOVE_EFFECT_NOTHING_3A          0x3A
#define MOVE_EFFECT_SP_ATK_TWO_DOWN     0x3B
#define MOVE_EFFECT_NOTHING_3C          0x3C
#define MOVE_EFFECT_NOTHING_3D          0x3D
#define MOVE_EFFECT_NOTHING_3E          0x3E
#define MOVE_EFFECT_NOTHING_3F          0x3F
#define MOVE_EFFECT_AFFECTS_USER        0x40
#define MOVE_EFFECT_CERTAIN             0x80

#define GET_STAT_BUFF_ID(n)((n & 0xF))              // first four bits 0x1, 0x2, 0x4, 0x8
#define GET_STAT_BUFF_VALUE2(n)((n & 0xF0))
#define GET_STAT_BUFF_VALUE(n)(((n >> 4) & 7))      // 0x10, 0x20, 0x40
#define STAT_BUFF_NEGATIVE 0x80                     // 0x80, the sign bit

#define SET_STAT_BUFF_VALUE(n)(((s8)(((s8)(n) << 4)) & 0xF0))

#define SET_STATCHANGER(statId, stage, goesDown)(gBattleScripting.statChanger = (statId) + (stage << 4) + (goesDown << 7))

// used in many battle files, it seems as though Hisashi Sogabe wrote
// some sort of macro to replace the use of actually calling memset.
// Perhaps it was thought calling memset was much slower?

// The compiler wont allow us to locally declare ptr in this macro; some
// functions that invoke this macro will not match without this egregeous
// assumption about the variable names, so in order to avoid this assumption,
// we opt to pass the variables themselves, even though it is likely that
// Sogabe assumed the variables were named src and dest. Trust me: I tried to
// avoid assuming variable names, but the ROM just will not match without the
// assumptions. Therefore, these macros are bad practice, but I'm putting them
// here anyway.
#define MEMSET_ALT(data, c, size, var, dest)    \
{    \
    dest = (u8 *)data;    \
    for(var = 0; var < (u32)size; var++)    \
        dest[var] = c;    \
}    \

#define MEMCPY_ALT(data, dest, size, var, src)    \
{    \
    src = (u8 *)data;    \
    for(var = 0; var < (u32)size; var++)    \
        dest[var] = src[var];    \
}    \

struct BattleScripting
{
    s32 painSplitHp;
    s32 bideDmg;
    u8 multihitString[6];
    u8 dmgMultiplier;
    u8 twoTurnsMoveStringId;
    u8 animArg1;
    u8 animArg2;
    u16 tripleKickPower;
    u8 atk49_state;
    u8 battlerWithAbility;
    u8 multihitMoveEffect;
    u8 battler;
    u8 animTurn;
    u8 animTargetsHit;
    u8 statChanger;
    bool8 statAnimPlayed;
    u8 atk23_state;
    u8 battleStyle;
    u8 atk6C_state;
    u8 learnMoveState;
    u8 field_20;
    u8 reshowMainState;
    u8 reshowHelperState;
    u8 field_23;
};

// functions

// battle_1
void LoadBattleTextboxAndBackground(void);
void LoadBattleEntryBackground(void);
void ApplyPlayerChosenFrameToBattleMenu(void);
bool8 LoadChosenBattleElement(u8 caseId);
void DrawMainBattleBackground(void);
void task00_0800F6FC(u8 taskId);
void sub_800F324(void);

enum
{
    BACK_PIC_BRENDAN,
    BACK_PIC_MAY,
    BACK_PIC_RED,
    BACK_PIC_LEAF,
    BACK_PIC_RS_BRENDAN,
    BACK_PIC_RS_MAY,
    BACK_PIC_WALLY,
    BACK_PIC_STEVEN
};

// rom_80A5C6C
u8 GetBattlerSide(u8 bank);
u8 GetBattlerPosition(u8 bank);
u8 GetBattlerAtPosition(u8 bank);

struct BattleSpriteInfo
{
    u16 invisible : 1; // 0x1
    u16 lowHpSong : 1; // 0x2
    u16 behindSubstitute : 1; // 0x4
    u16 flag_x8 : 1; // 0x8
    u16 hpNumbersNoBars : 1; // 0x10
    u16 transformSpecies;
};

struct BattleAnimationInfo
{
    u16 animArg; // to fill up later
    u8 field_2;
    u8 field_3;
    u8 field_4;
    u8 field_5;
    u8 field_6;
    u8 field_7;
    u8 ballThrowCaseId;
    u8 field_9_x1 : 1;
    u8 field_9_x2 : 1;
    u8 field_9_x1C : 3;
    u8 field_9_x20 : 1;
    u8 field_9_x40 : 1;
    u8 field_9_x80 : 1;
    u8 field_A;
    u8 field_B;
    u8 field_C;
    u8 field_D;
    u8 field_E;
    u8 field_F;
};

struct BattleHealthboxInfo
{
    u8 partyStatusSummaryShown : 1;
    u8 healthboxIsBouncing : 1;
    u8 battlerIsBouncing : 1;
    u8 ballAnimActive : 1; // 0x8
    u8 statusAnimActive : 1; // x10
    u8 animFromTableActive : 1; // x20
    u8 specialAnimActive : 1; //x40
    u8 flag_x80 : 1;
    u8 field_1_x1 : 1;
    u8 field_1_x1E : 5;
    u8 field_1_x40 : 1;
    u8 field_1_x80 : 1;
    u8 healthboxBounceSpriteId;
    u8 battlerBounceSpriteId;
    u8 animationState;
    u8 field_5;
    u8 matrixNum;
    u8 shadowSpriteId;
    u8 field_8;
    u8 field_9;
    u8 field_A;
    u8 field_B;
};

struct BattleBarInfo
{
    u8 healthboxSpriteId;
    s32 maxValue;
    s32 oldValue;
    s32 receivedValue;
    s32 currValue;
};

struct BattleSpriteData
{
    struct BattleSpriteInfo *battlerData;
    struct BattleHealthboxInfo *healthBoxesData;
    struct BattleAnimationInfo *animationData;
    struct BattleBarInfo *battleBars;
};

extern struct BattleSpriteData *gBattleSpritesDataPtr;

#define BATTLE_BUFFER_LINK_SIZE 0x1000

extern u8 *gLinkBattleSendBuffer;
extern u8 *gLinkBattleRecvBuffer;

extern u8 *gUnknown_0202305C;
extern u8 *gUnknown_02023060;

// Move this somewhere else

#include "sprite.h"

struct MonSpritesGfx
{
    void* firstDecompressed; // ptr to the decompressed sprite of the first pokemon
    void* sprites[4];
    struct SpriteTemplate templates[4];
    struct SpriteFrameImage field_74[4][4];
    u8 field_F4[0x80];
    u8 *barFontGfx;
    void *field_178;
    void *field_17C;
};

extern u16 gBattle_BG0_X;
extern u16 gBattle_BG0_Y;
extern u16 gBattle_BG1_X;
extern u16 gBattle_BG1_Y;
extern u16 gBattle_BG2_X;
extern u16 gBattle_BG2_Y;
extern u16 gBattle_BG3_X;
extern u16 gBattle_BG3_Y;
extern u16 gBattle_WIN0H;
extern u16 gBattle_WIN0V;
extern u16 gBattle_WIN1H;
extern u16 gBattle_WIN1V;
extern struct BattleSpritesGfx *gMonSpritesGfx;
extern u8 gBattleOutcome;
extern u16 gLastUsedItem;
extern u32 gBattleTypeFlags;
extern struct MonSpritesGfx *gMonSpritesGfxPtr;
extern u16 gTrainerBattleOpponent_A;
extern u16 gMoveToLearn;
extern u16 gBattleMovePower;
extern struct BattleEnigmaBerry gEnigmaBerries[MAX_BATTLERS_COUNT];
extern u16 gCurrentMove;
extern u16 gChosenMove;
extern u16 gCalledMove;
extern u8 gCritMultiplier;
extern u16 gBattleWeather;
extern u8 gLastUsedAbility;
extern u8 gBattlerInMenuId;
extern u8 gPotentialItemEffectBattler;
extern u8 gBattlersCount;
extern u16 gBattlerPartyIndexes[MAX_BATTLERS_COUNT];
extern s32 gBattleMoveDamage;
extern u16 gIntroSlideFlags;
extern u32 gTransformedPersonalities[MAX_BATTLERS_COUNT];
extern u8 gBattlerPositions[MAX_BATTLERS_COUNT];
extern u8 gHealthboxSpriteIds[MAX_BATTLERS_COUNT];
extern u8 gBattleOutcome;
extern u8 gBattleMonForms[MAX_BATTLERS_COUNT];
extern void (*gBattlerControllerFuncs[MAX_BATTLERS_COUNT])(void);
extern u32 gBattleControllerExecFlags;
extern u8 gBattleBufferA[MAX_BATTLERS_COUNT][0x200];
extern u8 gBattleBufferB[MAX_BATTLERS_COUNT][0x200];
extern u8 gActionSelectionCursor[MAX_BATTLERS_COUNT];
extern void (*gPreBattleCallback1)(void);
extern bool8 gDoingBattleAnim;
extern void *gUnknown_3005EE0[];
extern u8 *gUnknown_2022BB8;
extern u8 *gUnknown_2022BBC;
extern void (*gBattleMainFunc)(void);
extern u8 gMoveSelectionCursor[MAX_BATTLERS_COUNT];
extern u32 gUnknown_2022B54;
extern u8 gUnknown_2023DDC;
extern u8 gBattlerAttacker;
extern u8 gEffectBattler;
extern u8 gMultiHitCounter;
extern struct BattleScripting gBattleScripting;
extern u8 gBattlerFainted;
extern u32 gStatuses3[MAX_BATTLERS_COUNT];
extern u8 gSentPokesToOpponent[2];
extern const u8 *gBattlescriptCurrInstr;
extern const u8 *gSelectionBattleScripts[MAX_BATTLERS_COUNT];
extern u16 gLastMoves[MAX_BATTLERS_COUNT];
extern u8 gBattlerByTurnOrder[MAX_BATTLERS_COUNT];
extern u8 gBattleCommunication[BATTLE_COMMUNICATION_ENTRIES_COUNT];
extern u16 gSideStatuses[2];
extern u32 gHitMarker;
extern u16 gChosenMoveByBattler[MAX_BATTLERS_COUNT];
extern u8 gMoveResultFlags;
extern s32 gTakenDmg[MAX_BATTLERS_COUNT];
extern u8 gTakenDmgByBattler[MAX_BATTLERS_COUNT];
extern u8 gCurrentActionFuncId;
extern u8 gCurrMovePos;
extern u8 gChosenMovePos;
extern u8 gUnknown_3004FFC[MAX_BATTLERS_COUNT];
extern u8 gBattlerStatusSummaryTaskId[MAX_BATTLERS_COUNT];
extern u16 gDynamicBasePower;
extern u16 gLastLandedMoves[MAX_BATTLERS_COUNT];
extern u8 gLastHitBy[MAX_BATTLERS_COUNT];
extern u8 gMultiUsePlayerCursor;
extern u8 gNumberOfMovesToChoose;
extern u16 gLastHitByType[MAX_BATTLERS_COUNT];
extern s32 gHpDealt;
extern u16 gPauseCounterBattle;
extern u16 gPaydayMoney;
extern u16 gLockedMoves[MAX_BATTLERS_COUNT];
extern u8 gCurrentTurnActionNumber;
extern u16 gExpShareExp;
extern u8 gLeveledUpInBattle;
extern u16 gLastResultingMoves[MAX_BATTLERS_COUNT];
extern u16 gLastPrintedMoves[MAX_BATTLERS_COUNT];
extern u8 gActionsByTurnOrder[MAX_BATTLERS_COUNT];
extern u8 gChosenActionByBattler[MAX_BATTLERS_COUNT];
extern u8 gBattleTerrain;

#endif // GUARD_BATTLE_H