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#include "global.h"
#include "type_effectiveness.h"
#include "constants/ability.h"
#include "constants/status.h"
#include "constants/weather.h"
#include "dungeon_global_data.h"
#include "dungeon_pokemon_attributes.h"
#include "dungeon_util.h"
#include "type_chart.h"
#include "weather.h"
#define FLASH_FIRE_STATUS_NONE 0
u32 gTypeEffectivenessMultipliers[] = {0, 1, 2, 4};
extern u8 GetFlashFireStatus(struct DungeonEntity *pokemon);
s32 WeightWeakTypePicker(struct DungeonEntity *user, struct DungeonEntity *target, u8 moveType)
{
s32 weight = 1;
bool8 checkExposed = FALSE;
struct DungeonEntityData *userData;
struct DungeonEntityData *targetData;
u8 *targetTypes;
u8 *targetType;
u32 moveTypeOffset;
if (!EntityExists(target))
{
return 1;
}
if (moveType == TYPE_NORMAL || moveType == TYPE_FIGHTING)
{
checkExposed = TRUE;
}
userData = user->entityData;
targetData = target->entityData;
if (moveType == TYPE_FIRE && GetFlashFireStatus(target) != FLASH_FIRE_STATUS_NONE)
{
return 0;
}
if (moveType == TYPE_ELECTRIC && HasAbility(target, ABILITY_VOLT_ABSORB))
{
return 0;
}
if (moveType == TYPE_WATER && HasAbility(target, ABILITY_WATER_ABSORB))
{
return 0;
}
if (moveType == TYPE_GROUND && HasAbility(target, ABILITY_LEVITATE))
{
return 1;
}
targetTypes = targetData->types;
moveTypeOffset = moveType * NUM_TYPES * sizeof(s16);
targetType = targetData->types;
do
{
s32 effectiveness;
u32 typeEffectivenessMultipliers[NUM_EFFECTIVENESS];
memcpy(typeEffectivenessMultipliers, gTypeEffectivenessMultipliers, NUM_EFFECTIVENESS * sizeof(u32));
if (checkExposed && *targetType == TYPE_GHOST && !targetData->exposedStatus)
{
effectiveness = 0;
gDungeonGlobalData->pokemonExposed = TRUE;
}
else
{
effectiveness = gTypeEffectivenessChart[moveType][*targetType];
// Used to swap variable initialization order at the loop start.
effectiveness = *(s16*)(((s8*) gTypeEffectivenessChart) + moveTypeOffset + *targetType * 2);
}
if (weight == 0)
{
goto breakLoop;
}
weight *= typeEffectivenessMultipliers[effectiveness];
weight /= 2;
if (weight == 0)
{
// BUG: If the Pokémon's first type resists the move, the second type is ignored.
// This can cause type effectiveness to be calculated incorrectly
// if the first type resists the move and the second type is weak to the move.
// For example, a Fire-type move is considered not very effective against a Rock/Bug-type like Anorith.
return 2;
}
} while ((s32)(++targetType) <= (s32)(targetTypes + 1));
breakLoop:
if ((moveType == TYPE_FIRE || moveType == TYPE_ICE) && HasAbility(target, ABILITY_THICK_FAT))
{
return 2;
}
if (moveType == TYPE_WATER && HasAbility(user, ABILITY_TORRENT))
{
s32 maxHP = userData->maxHP;
if (maxHP < 0)
{
maxHP += 3;
}
if (maxHP >> 2 >= userData->HP)
{
weight *= 2;
}
}
if (moveType == TYPE_GRASS && HasAbility(user, ABILITY_OVERGROW))
{
s32 maxHP = userData->maxHP;
if (maxHP < 0)
{
maxHP += 3;
}
if (maxHP >> 2 >= userData->HP)
{
weight *= 2;
}
}
if (moveType == TYPE_BUG && HasAbility(user, ABILITY_SWARM))
{
s32 maxHP = userData->maxHP;
if (maxHP < 0)
{
maxHP += 3;
}
if (maxHP >> 2 >= userData->HP)
{
weight *= 2;
}
}
if (moveType == TYPE_FIRE && HasAbility(user, ABILITY_BLAZE))
{
s32 maxHP = userData->maxHP;
if (maxHP < 0)
{
maxHP += 3;
}
if (maxHP >> 2 >= userData->HP)
{
weight *= 2;
}
}
if (weight == 0)
{
return 2;
}
if (HasType(user, moveType))
{
weight *= 2;
}
targetTypes = targetData->types;
if (GetWeather(user) == WEATHER_SUNNY)
{
if (moveType == TYPE_FIRE)
{
weight *= 2;
}
else if (moveType == TYPE_WATER)
{
return 2;
}
}
if (gDungeonGlobalData->mudSportTurnsLeft != 0 && moveType == TYPE_ELECTRIC)
{
return 2;
}
if (gDungeonGlobalData->waterSportTurnsLeft != 0 && moveType == TYPE_FIRE)
{
return 2;
}
if (moveType == TYPE_ELECTRIC && userData->chargingStatus == CHARGING_STATUS_CHARGE)
{
weight *= 2;
}
if (weight > 2)
{
weight = 3;
}
return weight + 2;
}
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