Villager.cpp

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#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
 
#include "Villager.h"
#include "../World.h"
#include "../BlockArea.h"
#include "../Blocks/BlockHandler.h"
#include "../BlockInServerPluginInterface.h"
 
 
 
 
 
cVillager::cVillager(eVillagerType VillagerType) :
    Super("Villager", mtVillager, "entity.villager.hurt", "entity.villager.death", "entity.villager.ambient", 0.6f, 1.95f),
    m_ActionCountDown(-1),
    m_Type(VillagerType),
    m_FarmerAction(faIdling),
    m_Inventory(8, 1)
{
}
 
 
 
 
 
bool cVillager::DoTakeDamage(TakeDamageInfo & a_TDI)
{
    if (!Super::DoTakeDamage(a_TDI))
    {
        return false;
    }
 
    if ((a_TDI.Attacker != nullptr) && a_TDI.Attacker->IsPlayer())
    {
        if (GetRandomProvider().RandBool(1.0 / 6.0))
        {
            m_World->BroadcastEntityAnimation(*this, EntityAnimation::VillagerShowsAnger);
        }
    }
 
    if (a_TDI.DamageType == dtLightning)
    {
        Destroy();
        m_World->SpawnMob(GetPosX(), GetPosY(), GetPosZ(), mtWitch, false);
        return true;
    }
    return true;
}
 
 
 
 
 
void cVillager::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
    Super::Tick(a_Dt, a_Chunk);
    if (!IsTicking())
    {
        // The base class tick destroyed us
        return;
    }
 
    switch (m_Type)
    {
        case vtFarmer:
        {
            TickFarmer();
            break;
        }
    }
}
 
 
 
 
 
void cVillager::KilledBy(TakeDamageInfo & a_TDI)
{
    Super::KilledBy(a_TDI);
 
    // TODO: 0% chance on Easy, 50% chance on Normal and 100% chance on Hard
    if (GetRandomProvider().RandBool(0.5) && (a_TDI.Attacker != nullptr) && (a_TDI.Attacker->IsMob()))
    {
        eMonsterType MonsterType = (static_cast<cMonster *>(a_TDI.Attacker)->GetMobType());
        if ((MonsterType == mtZombie) || (MonsterType == mtZombieVillager))
        {
            m_World->SpawnMob(GetPosX(), GetPosY(), GetPosZ(), mtZombieVillager, false);
        }
    }
}
 
 
 
 
 
// Farmer functions:
 
void cVillager::TickFarmer()
{
 
    // Don't harvest crops if you must not
    if (!m_World->VillagersShouldHarvestCrops())
    {
        return;
    }
 
    // This is to prevent undefined behaviors
    if (m_FinalDestination.y <= 0)
    {
        return;
    }
 
    if (!IsIdling())
    {
        // Forcing the farmer to go to work spots.
        MoveToPosition(static_cast<Vector3d>(m_CropsPos) + Vector3d(0.5, 0, 0.5));
 
        // Forcing the farmer to look at the work spots.
        Vector3d Direction = (m_FinalDestination - (GetPosition() + Vector3d(0, 1.6, 0)));  // We get the direction from the eyes of the farmer to the work spot.
        Direction.Normalize();
        SetPitch(std::asin(-Direction.y) / M_PI * 180);
    }
 
    // Updating the timer
    if (m_ActionCountDown > -1)
    {
        m_ActionCountDown--;
    }
 
    // Searching for work in blocks where the farmer goes.
    if (IsHarvestable(m_FinalDestination.Floor()))
    {
        m_CropsPos = m_FinalDestination.Floor();
        m_FarmerAction = faHarvesting;
        HandleFarmerTryHarvestCrops();
        return;
    }
    else if (IsPlantable(m_FinalDestination.Floor()) && CanPlantCrops())
    {
        m_CropsPos = m_FinalDestination.Floor();
        m_FarmerAction = faPlanting;
        HandleFarmerTryPlaceCrops();
        return;
    }
    else
    {
        m_FarmerAction = faIdling;  // Returning to idling.
    }
 
 
    // Don't always try to do a special action. Each tick has 10% to do a special action.
    if (GetRandomProvider().RandBool(FARMER_SPECIAL_ACTION_CHANCE))
    {
        ScanAreaForWork();
    }
 
}
 
 
 
 
 
void cVillager::ScanAreaForWork()
{
 
    auto Pos = GetPosition().Floor();
    auto MinPos = Pos - FARMER_SCAN_CROPS_DIST;
    auto MaxPos = Pos + FARMER_SCAN_CROPS_DIST;
 
    // Read area to be checked for crops.
    cBlockArea Surrounding;
    Surrounding.Read(
        *m_World,
        MinPos, MaxPos
    );
 
    for (int I = 0; I < FARMER_RANDOM_TICK_SPEED; I++)
    {
        for (int Y = MinPos.y; Y <= MaxPos.y; Y++)
        {
            // Pick random coordinates and check for crops.
            Vector3i CandidatePos(MinPos.x + m_World->GetTickRandomNumber(MaxPos.x - MinPos.x - 1), Y, MinPos.z + m_World->GetTickRandomNumber(MaxPos.z - MinPos.z - 1));
 
            // A villager can harvest this.
            if (IsHarvestable(CandidatePos))
            {
                m_CropsPos = CandidatePos;
                m_FarmerAction = faHarvesting;
                MoveToPosition(static_cast<Vector3d>(m_CropsPos) + Vector3d(0.5, 0, 0.5));
                return;
            }
            // A villager can plant this.
            else if (IsPlantable(CandidatePos) && CanPlantCrops())
            {
                m_CropsPos = CandidatePos;
                m_FarmerAction = faHarvesting;
                MoveToPosition(static_cast<Vector3d>(m_CropsPos) + Vector3d(0.5, 0, 0.5));
                return;
            }
 
        }  // for Y
    }  // Repeat the proccess according to the random tick speed.
}
 
 
 
 
 
void cVillager::HandleFarmerTryHarvestCrops()
{
    if (m_ActionCountDown > 0)
    {
        // The farmer is still on cooldown
        return;
    }
 
    // Harvest the crops if it is closer than 1 block.
    if ((GetPosition() - m_CropsPos).Length() < 1)
    {
        // Check if the blocks didn't change while the villager was walking to the coordinates.
        if (IsHarvestable(m_CropsPos))
        {
            m_World->BroadcastSoundParticleEffect(EffectID::PARTICLE_BLOCK_BREAK, m_CropsPos, m_World->GetBlock(m_CropsPos));
            m_World->DropBlockAsPickups(m_CropsPos, this, nullptr);
            // Applying 0.5 second cooldown.
            m_ActionCountDown = 10;
        }
    }
}
 
 
 
 
 
void cVillager::CheckForNearbyCrops()
{
 
    // Search for adjacent crops
 
    constexpr std::array<Vector3i, 4> Directions = { Vector3i{0, 0, -1}, {0, 0, 1}, {1, 0, 0}, {-1, 0, 0} };
 
    for (Vector3i Direction : Directions)
    {
        if (IsHarvestable(m_CropsPos + Direction))
        {
            m_CropsPos += Direction;
            m_FarmerAction = faHarvesting;
            MoveToPosition(static_cast<Vector3d>(m_CropsPos) + Vector3d(0.5, 0, 0.5));
            return;
        }
        else if (IsPlantable(m_CropsPos + Direction) && CanPlantCrops())
        {
            m_CropsPos += Direction;
            m_FarmerAction = faPlanting;
            MoveToPosition(static_cast<Vector3d>(m_CropsPos) + Vector3d(0.5, 0, 0.5));
            return;
        }
 
    }
 
    // There is no more work to do around the previous crops.
    m_FarmerAction = faIdling;
}
 
 
 
 
 
void cVillager::HandleFarmerTryPlaceCrops()
{
 
    if ((GetPosition() - m_CropsPos).Length() > 1)
    {
        // The farmer is still to far from the final destination
        return;
    }
 
    if (m_ActionCountDown > 0)
    {
        // The farmer is still on cooldown
        return;
    }
 
    // Check if there is still farmland at the spot where the crops were.
    if (IsPlantable(m_CropsPos))
    {
        // Finding the item to use to plant a crop
        int TargetSlot = -1;
        BLOCKTYPE CropBlockType = E_BLOCK_AIR;
 
        for (int I = 0; I < m_Inventory.GetWidth() && TargetSlot < 0; I++)
        {
            const cItem & Slot = m_Inventory.GetSlot(I);
            switch (Slot.m_ItemType)
            {
                case E_ITEM_SEEDS:
                {
                    TargetSlot = I;
                    CropBlockType = E_BLOCK_CROPS;
                    break;
                }
 
                case E_ITEM_BEETROOT_SEEDS:
                {
                    TargetSlot = I;
                    CropBlockType = E_BLOCK_BEETROOTS;
                    break;
                }
 
                case E_ITEM_POTATO:
                {
                    TargetSlot = I;
                    CropBlockType = E_BLOCK_POTATOES;
                    break;
                }
 
                case E_ITEM_CARROT:
                {
                    TargetSlot = I;
                    CropBlockType = E_BLOCK_CARROTS;
                    break;
                }
 
                default:
                {
                    break;
                }
            }
        }
 
        // Removing item from villager inventory
        m_Inventory.RemoveOneItem(TargetSlot);
 
        // Placing crop block
        m_World->SetBlock(m_CropsPos, CropBlockType, 0);
 
        // Applying 1 second cooldown
        m_ActionCountDown = 20;
 
        // Try to do the same with adjacent crops.
        CheckForNearbyCrops();
    }
}
 
 
 
 
 
bool cVillager::CanPlantCrops()
{
    return m_Inventory.HasItems(cItem(E_ITEM_SEEDS)) ||
        m_Inventory.HasItems(cItem(E_ITEM_BEETROOT_SEEDS)) ||
        m_Inventory.HasItems(cItem(E_ITEM_POTATO)) ||
        m_Inventory.HasItems(cItem(E_ITEM_CARROT));
}
 
 
 
 
 
bool cVillager::IsBlockFarmable(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
{
    switch (a_BlockType)
    {
        case E_BLOCK_BEETROOTS:
        {
            // The crop must have fully grown up.
            return a_BlockMeta == 0x03;
        }
        case E_BLOCK_CROPS:
        case E_BLOCK_POTATOES:
        case E_BLOCK_CARROTS:
        {
            // The crop must have fully grown up.
            return a_BlockMeta == 0x07;
        }
        default: return false;
    }
}
 
 
 
 
 
bool cVillager::IsHarvestable(Vector3i a_CropsPos)
{
    return IsBlockFarmable(m_World->GetBlock(a_CropsPos), m_World->GetBlockMeta(a_CropsPos));
}
 
 
 
 
 
bool cVillager::IsPlantable(Vector3i a_CropsPos)
{
    return (m_World->GetBlock(a_CropsPos.addedY(-1)) == E_BLOCK_FARMLAND) && (m_World->GetBlock(a_CropsPos) == E_BLOCK_AIR);
}
 
 
 
 
 
cVillager::eVillagerType cVillager::GetRandomProfession()
{
    int Profession = GetRandomProvider().RandInt(cVillager::eVillagerType::vtMax - 1);
 
    return static_cast<cVillager::eVillagerType>(Profession);
}