//
// Generated by dtk
// Translation Unit: J3DDrawBuffer.cpp
//

#include "JSystem/J3DGraphBase/J3DDrawBuffer.h"
#include "JSystem/J3DGraphBase/J3DPacket.h"
#include "JSystem/J3DGraphBase/J3DMaterial.h"
#include "JSystem/J3DGraphBase/J3DSys.h"
#include "JSystem/J3DGraphBase/J3DTexture.h"
#include "JSystem/J3DGraphBase/J3DTransform.h"
#include "JSystem/JKernel/JKRHeap.h"
#include "dolphin/types.h"

void J3DDrawBuffer::calcZRatio() {
    mZRatio = (mZFar - mZNear) / (f32)mBufSize;
}

/* 802EC74C-802EC7B4       .text initialize__13J3DDrawBufferFv */
void J3DDrawBuffer::initialize() {
    mDrawType = DRAW_HEAD;
    mSortType = SORT_MAT;
    mZNear = 1.0f;
    mZFar = 10000.0f;
    mpZMtx = NULL;
    mpCallBackPacket = NULL;
    mBufSize = 0x20;
    calcZRatio();
}

/* 802EC7B4-802EC84C       .text allocBuffer__13J3DDrawBufferFUl */
J3DError J3DDrawBuffer::allocBuffer(u32 bufSize) {
    mpBuf = new (0x20) J3DPacket*[bufSize];
    if (mpBuf == NULL)
        return kJ3DError_Alloc;

    mBufSize = bufSize;
    frameInit();
    calcZRatio();
    return kJ3DError_Success;
}

/* 802EC84C-802EC8AC       .text __dt__13J3DDrawBufferFv */
J3DDrawBuffer::~J3DDrawBuffer() {
    frameInit();

    delete[] mpBuf;
    mpBuf = NULL;
}

/* 802EC8AC-802EC8E4       .text frameInit__13J3DDrawBufferFv */
void J3DDrawBuffer::frameInit() {
    for (u32 i = 0; i < mBufSize; i++)
        mpBuf[i] = NULL;

    mpCallBackPacket = NULL;
}

/* 802EC8E4-802ECA38       .text entryMatSort__13J3DDrawBufferFP12J3DMatPacket */
int J3DDrawBuffer::entryMatSort(J3DMatPacket* pMatPacket) {
    pMatPacket->drawClear();
    pMatPacket->getShapePacket()->drawClear();

    if (pMatPacket->isChanged()) {
        pMatPacket->setNextPacket(mpBuf[0]);
        mpBuf[0] = pMatPacket;
        return 1;
    }

    J3DTexture* texture = j3dSys.getTexture();
    u32 hash;
    u16 texNo = pMatPacket->getMaterial()->getTexNo(0);
    if (texNo == 0xFFFF) {
        hash = 0;
    } else {
        hash = ((u32)texture->getResTIMG(texNo) + texture->getResTIMG(texNo)->imageOffset) >> 5;
    }
    u32 slot = hash & (mBufSize - 1);

    if (mpBuf[slot] == NULL) {
        mpBuf[slot] = pMatPacket;
        return 1;
    } else {
        for (J3DMatPacket* pkt = (J3DMatPacket*)mpBuf[slot]; pkt != NULL; pkt = (J3DMatPacket*)pkt->getNextPacket()) {
            if (pkt->isSame(pMatPacket)) {
                pkt->addShapePacket(pMatPacket->getShapePacket());
                return 0;
            }
        }

        pMatPacket->setNextPacket(mpBuf[slot]);
        mpBuf[slot] = pMatPacket;
        return 1;
    }
}

/* 802ECA38-802ECAF0       .text entryMatAnmSort__13J3DDrawBufferFP12J3DMatPacket */
int J3DDrawBuffer::entryMatAnmSort(J3DMatPacket* pMatPacket) {
    J3DMaterialAnm* pMaterialAnm = pMatPacket->mpMaterialAnm;
    u32 slot = (u32)pMaterialAnm & (mBufSize - 1);

    if (pMaterialAnm == NULL) {
        return entryMatSort(pMatPacket);
    } else {
        pMatPacket->drawClear();
        pMatPacket->getShapePacket()->drawClear();
        if (mpBuf[slot] == NULL) {
            mpBuf[slot] = pMatPacket;
            return 1;
        } else {
            for (J3DMatPacket* pkt = (J3DMatPacket*)mpBuf[slot]; pkt != NULL;
                 pkt = (J3DMatPacket*)pkt->getNextPacket())
            {
                if (pkt->mpMaterialAnm == pMaterialAnm) {
                    pkt->addShapePacket(pMatPacket->getShapePacket());
                    return 0;
                }
            }

            pMatPacket->setNextPacket(mpBuf[slot]);
            mpBuf[slot] = pMatPacket;
            return 1;
        }
    }
}

/* 802ECAF0-802ECBEC       .text entryZSort__13J3DDrawBufferFP12J3DMatPacket */
int J3DDrawBuffer::entryZSort(J3DMatPacket* i_packet) {
    i_packet->drawClear();
    i_packet->getShapePacket()->drawClear();

    Vec tmp;
    tmp.x = mpZMtx[0][3];
    tmp.y = mpZMtx[1][3];
    tmp.z = mpZMtx[2][3];

    f32 value = -J3DCalcZValue(j3dSys.getViewMtx(), tmp);

    u32 uvar4;
    if (mZNear + mZRatio < value) {
        if (mZFar - mZRatio > value) {
            uvar4 = value / mZRatio;
        } else {
            uvar4 = mBufSize - 1;
        }
    } else {
        uvar4 = 0;
    }

    u32 idx = (mBufSize - 1) - uvar4;
    i_packet->setNextPacket(mpBuf[idx]);
    mpBuf[idx] = i_packet;

    return 1;
}

/* 802ECBEC-802ECC3C       .text entryModelSort__13J3DDrawBufferFP12J3DMatPacket */
int J3DDrawBuffer::entryModelSort(J3DMatPacket* i_packet) {
    i_packet->drawClear();
    i_packet->getShapePacket()->drawClear();

    if (mpCallBackPacket != NULL) {
        mpCallBackPacket->addChildPacket(i_packet);
        return 1;
    }

    return 0;
}

/* 802ECC3C-802ECC90       .text entryInvalidSort__13J3DDrawBufferFP12J3DMatPacket */
int J3DDrawBuffer::entryInvalidSort(J3DMatPacket* i_packet) {
    i_packet->drawClear();
    i_packet->getShapePacket()->drawClear();

    if (mpCallBackPacket != NULL) {
        mpCallBackPacket->addChildPacket(i_packet->getShapePacket());
        return 1;
    }

    return 0;
}

/* 802ECC90-802ECCC4       .text entryNonSort__13J3DDrawBufferFP12J3DMatPacket */
int J3DDrawBuffer::entryNonSort(J3DMatPacket* i_packet) {
    i_packet->drawClear();
    i_packet->mpShapePacket->drawClear();

    i_packet->setNextPacket(mpBuf[0]);
    mpBuf[0] = i_packet;

    return 1;
}

/* 802ECCC4-802ECCE4       .text entryImm__13J3DDrawBufferFP9J3DPacketUs */
int J3DDrawBuffer::entryImm(J3DPacket* i_packet, u16 index) {
    i_packet->setNextPacket(mpBuf[index]);
    mpBuf[index] = i_packet;

    return 1;
}

J3DDrawBuffer::sortFunc J3DDrawBuffer::sortFuncTable[] = {
    &J3DDrawBuffer::entryMatSort,
    &J3DDrawBuffer::entryMatAnmSort,
    &J3DDrawBuffer::entryZSort,
    &J3DDrawBuffer::entryModelSort,
    &J3DDrawBuffer::entryInvalidSort,
    &J3DDrawBuffer::entryNonSort,
};

J3DDrawBuffer::drawFunc J3DDrawBuffer::drawFuncTable[] = {
    &J3DDrawBuffer::drawHead,
    &J3DDrawBuffer::drawTail,
};

/* 802ECCE4-802ECD38       .text draw__13J3DDrawBufferCFv */
void J3DDrawBuffer::draw() const {
    drawFunc func = drawFuncTable[mDrawType];
    (this->*func)();
}

/* 802ECD38-802ECDB0       .text drawHead__13J3DDrawBufferCFv */
void J3DDrawBuffer::drawHead() const {
    u32 size = mBufSize;
    J3DPacket** buf = mpBuf;

    for (u32 i = 0; i < size; i++) {
        for (J3DPacket* packet = buf[i]; packet != NULL; packet = packet->getNextPacket()) {
            packet->draw();
        }
    }
}

/* 802ECDB0-802ECE2C       .text drawTail__13J3DDrawBufferCFv */
void J3DDrawBuffer::drawTail() const {
    int num = mBufSize - 1;

    for (int i = num; i >= 0; i--) {
        for (J3DPacket* packet = mpBuf[i]; packet != NULL; packet = packet->getNextPacket()) {
            packet->draw();
        }
    }
}

/* 802ECE2C-802ECE5C       .text setCallBackPacket__13J3DDrawBufferFP17J3DCallBackPacket */
void J3DDrawBuffer::setCallBackPacket(J3DCallBackPacket* pPacket) {
    mpCallBackPacket = pPacket;
    if (pPacket != NULL) {
        pPacket->drawClear();
        pPacket->setNextPacket(mpBuf[0]);
        mpBuf[0] = pPacket;
    }
}

int J3DDrawBuffer::entryNum;