ObjectFlamePoleFoot.cc

#include "ObjectFlamePoleFoot.hh"
 
#include "game/field/CollisionDirector.hh"
 
#include "game/system/RaceManager.hh"
 
#include <algorithm>
 
namespace Kinoko::Field {

ObjectFlamePoleFoot::ObjectFlamePoleFoot(const System::MapdataGeoObj &params)
    : ObjectKCL(params), StateManager(this, STATE_ENTRIES) {
    m_extraCycleFrames = params.setting(0);
    m_initDelay = params.setting(1);
    m_poleScale = static_cast<f32>(params.setting(2));
 
    ++s_flamePoleCount;
 
    if (m_poleScale == 0.0f) {
        m_poleScale = 3.0f + static_cast<f32>(s_flamePoleCount % 3);
    }
 
    m_pole = EGG::egg_new<ObjectFlamePole>(params, pos(), rot(), scale());
    m_pole->load();
}

ObjectFlamePoleFoot::~ObjectFlamePoleFoot() {
    s_flamePoleCount = 0;
}

void ObjectFlamePoleFoot::init() {
    constexpr f32 NORMALIZATION = static_cast<f32>(CYCLE_FRAMES) * (7.0f - 1.0f);
 
    m_nextStateId = 0;
    m_cycleFrame = 0;
    m_eruptUpDuration = static_cast<s32>(0.1f * NORMALIZATION / 7.0f);
    m_eruptDownDuration = static_cast<s32>(0.2f * NORMALIZATION / 7.0f);
 
    s32 state1 = static_cast<s32>(0.3f * NORMALIZATION / 7.0f);
    s32 state2 = state1 + m_eruptUpDuration;
    s32 state3 = state2 + static_cast<s32>(static_cast<f32>(CYCLE_FRAMES) * 1.0f / 7.0f);
    s32 state4 = state3 + m_eruptDownDuration;
    s32 state5 = state4 + static_cast<s32>(0.4f * NORMALIZATION / 7.0f);
    m_stateStart = {{0, state1, state2, state3, state4, state5}};
 
    m_eruptDownVel = (m_poleScale - 1.0f) / static_cast<f32>(state1);
    m_initScaledHeight = ObjectFlamePole::HEIGHT * m_poleScale;
    m_scaleDelta = (300.0f + m_initScaledHeight) / static_cast<f32>(m_eruptDownDuration);
    m_pole->setActive(false);
    m_pole->disableCollision();
 
    EGG::Vector3f polePos = m_pole->pos();
    polePos.y = pos().y - ObjectFlamePole::HEIGHT * m_poleScale;
    m_pole->setPos(polePos);
}

void ObjectFlamePoleFoot::calc() {
    if (System::RaceManager::Instance()->timer() < m_initDelay) {
        return;
    }
 
    calcStates();
 
    StateManager::calc();
 
    f32 scale = getScaleY(0);
    setScale(scale);
 
    EGG::Vector3f polePos = m_pole->pos();
    m_pole->setPos(
            EGG::Vector3f(polePos.x, m_heightOffset + (pos().y - m_initScaledHeight), polePos.z));
    m_pole->setScale(m_poleScale);
}

void ObjectFlamePoleFoot::calcStates() {
    u32 frame = static_cast<s32>(System::RaceManager::Instance()->timer() - m_initDelay);
    m_cycleFrame = frame % (m_extraCycleFrames + CYCLE_FRAMES);
 
    // Access the array of state timers to see which state corresponds with the current frame.
    auto it = std::ranges::upper_bound(m_stateStart.begin(), m_stateStart.end(), m_cycleFrame);
    auto idx = it - m_stateStart.begin() - 1;
 
    if (idx < 0) {
        return;
    }
 
    u16 stateId = static_cast<u16>(idx);
 
    if (m_currentStateId != stateId) {
        m_nextStateId = stateId;
    }
}
 
f32 ObjectFlamePoleFoot::getScaleY(u32 timeOffset) const {
    u32 frame = System::RaceManager::Instance()->timer() - timeOffset;
    if (frame < m_initDelay) {
        return 1.0f;
    }
 
    s32 cycleFrame = frame - m_initDelay;
    cycleFrame %= m_extraCycleFrames + CYCLE_FRAMES;
 
    if (cycleFrame >= m_stateStart[5]) {
        return 1.0f;
    }
 
    if (cycleFrame >= m_stateStart[4]) {
        return std::max(1.0f,
                m_poleScale - m_eruptDownVel * static_cast<f32>(m_eruptDownDuration / 2) -
                        m_eruptDownVel * static_cast<f32>(cycleFrame - m_stateStart[4]));
    }
 
    if (cycleFrame >= m_stateStart[3]) {
        s32 framesSince194 = cycleFrame - m_stateStart[3];
        s32 half17c = m_eruptDownDuration / 2;
        if (framesSince194 > half17c) {
            return m_poleScale - m_eruptDownVel * static_cast<f32>(framesSince194 - half17c);
        } else {
            return m_poleScale;
        }
    }
 
    if (cycleFrame >= m_stateStart[2] || cycleFrame >= m_stateStart[1]) {
        return m_poleScale;
    }
 
    if (cycleFrame >= 0) {
        return std::min(m_poleScale, m_eruptDownVel * static_cast<f32>(cycleFrame) + 1.0f);
    }
 
    return 1.0f;
}

bool ObjectFlamePoleFoot::checkCollision(f32 radius, const EGG::Vector3f &pos,
        const EGG::Vector3f &prevPos, KCLTypeMask mask, CollisionInfo *info, KCLTypeMask *maskOut,
        u32 timeOffset) {
    update(timeOffset);
    calcScale(timeOffset);
    f32 scale = getScaleY(timeOffset);
 
    if (!m_objColMgr->checkSphereFullPush(radius, pos, prevPos, mask, info, maskOut)) {
        return false;
    }
 
    if (2.0f < scale) {
        CollisionDirector::Instance()->setCurrentCollisionTrickable(true);
    }
 
    return true;
}

bool ObjectFlamePoleFoot::checkCollisionCached(f32 radius, const EGG::Vector3f &pos,
        const EGG::Vector3f &prevPos, KCLTypeMask mask, CollisionInfo *info, KCLTypeMask *maskOut,
        u32 timeOffset) {
    update(timeOffset);
    calcScale(timeOffset);
    f32 scale = getScaleY(timeOffset);
 
    if (!m_objColMgr->checkSphereCachedFullPush(radius, pos, prevPos, mask, info, maskOut)) {
        return false;
    }
 
    if (2.0f < scale) {
        CollisionDirector::Instance()->setCurrentCollisionTrickable(true);
    }
 
    return true;
}

void ObjectFlamePoleFoot::enterEruptingUp() {
    m_pole->setActive(true);
    m_pole->enableCollision();
    m_heightOffset = 0.0f;
 
    f32 t1 = -1.0f;
    f32 t2 = -1.0f;
    f32 vel = m_initScaledHeight;
    EGG::Mathf::FindRootsQuadratic(static_cast<f32>(m_eruptUpDuration * m_eruptUpDuration),
            -4.0f * m_initScaledHeight * static_cast<f32>(m_eruptUpDuration),
            4.0f * m_initScaledHeight * m_initScaledHeight, t1, t2);
 
    if (t1 <= 0.0f) {
        t1 = -1.0f;
    }
 
    if (t2 <= 0.0f) {
        vel = t1;
    }
 
    m_initEruptVel = vel;
    m_eruptAccel = vel * vel / (2.0f * m_initScaledHeight);
}

void ObjectFlamePoleFoot::calcEruptingUp() {
    f32 frame = static_cast<f32>(m_cycleFrame - m_stateStart[1]);
    m_heightOffset = std::min(m_initScaledHeight,
            m_initEruptVel * frame - frame * 0.5f * m_eruptAccel * frame);
}

void ObjectFlamePoleFoot::calcEruptingStay() {
    constexpr f32 AMPLITUDE = 50.0f;
 
    f32 angle = 360.0f * static_cast<f32>(m_cycleFrame - m_stateStart[2]) / 30.0f;
    m_heightOffset = m_scaledHeight + AMPLITUDE * EGG::Mathf::SinFIdx(DEG2FIDX * angle);
}
 
u32 ObjectFlamePoleFoot::s_flamePoleCount = 0;
 
} // namespace Kinoko::Field