Function zParPTankSpawnSparkles

src/SB/Game/zParPTank.cpp:161–225

Equivalent: regswaps

// Equivalent: regswaps
void zParPTankSpawnSparkles(xVec3* pos, U32 count)
{
    if (zGameIsPaused())
    {
        return;
    }
    zParPTank* zp = sSparklePTank;

    if (count > zp->max_particles - zp->num_particles)
    {
        count = zp->max_particles - zp->num_particles;
    }

    if (count == 0)
    {
        return;
    }

    RpPTankLockStruct posLock;
    RpPTankLockStruct vtx2TexCoordsLock;

    RpPTankAtomicLock(zp->ptank, &posLock, rpPTANKLFLAGPOSITION, rpPTANKLOCKWRITE);
    if (posLock.data == NULL)
    {
        return;
    }

    RpPTankAtomicLock(zp->ptank, &vtx2TexCoordsLock, rpPTANKDFLAGVTX2TEXCOORDS, rpPTANKLOCKWRITE);
    if (vtx2TexCoordsLock.data == NULL)
    {
        return;
    }

    U32 poslock_base = (U32)posLock.data;
    U32 uvlock_base = (U32)vtx2TexCoordsLock.data;
    xVec3* ref_pos = pos;
    RwCamera* camera = RwCameraGetCurrentCamera();
    if (gGameState == eGameState_Play && camera)
    {
        // TODO: This was probably some Renderware macro
        ref_pos = (xVec3*)((U8*)camera->object.object.parent + 0x40);
    }

    xVec3* posit = pos;
    for (U32 i = 0; i < count; posit++, i++)
    {
        if (!sGameScreenTransCam && ref_pos && xVec3Dist2(posit, ref_pos) > 900.0f)
        {
            continue;
        }

        *(xVec3*)(poslock_base + zp->num_particles * posLock.stride) = *posit;
        RwTexCoords* uv =
            (RwTexCoords*)(uvlock_base + zp->num_particles * vtx2TexCoordsLock.stride);
        uv[0].u = 0.0f;
        uv[0].v = 0.5f;
        uv[1].u = 0.125f + uv[0].u;
        uv[1].v = 0.125f + uv[0].v;