EggState.cpp

#include "EggState.h"
#include "CellAsset.h"
#include "CellState.h"
#include "PartAsset.h"
#include "PartConfig.h"
#include "Part_BodyAsset.h"
#include "World.h"

EggState::EggState(const std::shared_ptr<CellAsset>& cellAsset)
    : m_cellAsset(cellAsset)
    , m_timer(m_cellAsset->getBornTime()) {
  setRadius(cellAsset->getRadius());
  setMass(cellAsset->getMass());
  setInertia(cellAsset->getInertia());
}

void EggState::updateEgg() {
  m_timer -= DeltaTime;

  // 衝突処理
  {
    auto result = World::GetInstance()->getEggStateKDTree().knnSearch(2, getPosition());
    if (result.size() == 2) {
      auto& t = World::GetInstance()->getEggStates()[result[1]];

      if (t->getPosition() != getPosition() && (getRadius() + t->getRadius() - (t->getPosition() - getPosition()).length()) > 0) {
        auto f = -1000.0 * (t->getPosition() - getPosition()).normalized() * (getRadius() + t->getRadius() - (t->getPosition() - getPosition()).length());
        addForceInWorld(f, getPosition());
        t->addForceInWorld(-f, t->getPosition());
      }
    }
  }

  // 孵化
  if (m_timer <= 0) {
    destroy();

    const auto& c = World::GetInstance()->addCellState(getCellAsset());
    c->setPosition(getPosition());
    c->setRotation(getRotation());
  }
}

void EggState::draw1() {
  const double stage = 1.0 - m_timer / m_cellAsset->getBornTime();

  m_cellAsset->getCellAssetTexture()
      .scaled(1.0 / GeneralSetting::GetInstance().m_textureScale)
      .scaled(Math::Lerp(0.125, 0.15, stage))
      .rotated(getRotation())
      .drawAt(getPosition(), ColorF(1.0, 0.5));
}

void EggState::draw2() {
  const double stage = 1.0 - m_timer / m_cellAsset->getBornTime();

  Circle(getPosition(), getRadius() * 2.0 * Math::Lerp(0.125, 0.25, stage))
      .draw(ColorF(Palette::Lightblue, 0.25));
}

void EggState::load(Deserializer<BinaryReader>& reader) {
  Rigidbody::load(reader);

  {
    String cellAssetName;
    reader >> cellAssetName;
    m_cellAsset = World::GetAsset<CellAsset>(cellAssetName);
  }

  reader >> m_timer;
}

void EggState::save(Serializer<MemoryWriter>& writer) const {
  Rigidbody::save(writer);

  writer << m_cellAsset->getName();
  writer << m_timer;
}