123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
/*
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* This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>.
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* It is copyright by its individual contributors, as recorded in the
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* project's Git history. See COPYING.txt at the top level for license
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* terms and a link to the Git history.
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*/
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/*
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*
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* Segment Loading Stuff
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*
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*/
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#include "segment.h"
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#include "physfsx.h"
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#include "physfs-serial.h"
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#include "d_underlying_value.h"
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namespace dcx {
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namespace {
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struct composite_side
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{
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const shared_side &sside;
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const unique_side &uside;
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};
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DEFINE_SERIAL_UDT_TO_MESSAGE(composite_side, s, (s.sside.wall_num, s.uside.tmap_num, s.uside.tmap_num2));
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ASSERT_SERIAL_UDT_MESSAGE_SIZE(composite_side, 6);
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}
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std::optional<sidenum_t> build_sidenum_from_untrusted(const uint8_t untrusted)
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{
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switch (untrusted)
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{
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case static_cast<uint8_t>(sidenum_t::WLEFT):
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case static_cast<uint8_t>(sidenum_t::WTOP):
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case static_cast<uint8_t>(sidenum_t::WRIGHT):
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case static_cast<uint8_t>(sidenum_t::WBOTTOM):
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case static_cast<uint8_t>(sidenum_t::WBACK):
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case static_cast<uint8_t>(sidenum_t::WFRONT):
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return sidenum_t{untrusted};
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default:
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return std::nullopt;
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}
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}
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void segment_side_wall_tmap_write(PHYSFS_File *fp, const shared_side &sside, const unique_side &uside)
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{
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PHYSFSX_serialize_write(fp, composite_side{sside, uside});
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}
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}
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#if defined(DXX_BUILD_DESCENT_II)
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namespace dsx {
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/*
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* reads a delta_light structure from a PHYSFS_File
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*/
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void delta_light_read(delta_light *dl, PHYSFS_File *fp)
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{
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{
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const auto s = segnum_t{static_cast<uint16_t>(PHYSFSX_readShort(fp))};
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dl->segnum = vmsegidx_t::check_nothrow_index(s) ? s : segment_none;
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}
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dl->sidenum = build_sidenum_from_untrusted(PHYSFSX_readByte(fp)).value_or(sidenum_t::WLEFT);
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PHYSFSX_readByte(fp);
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dl->vert_light[side_relative_vertnum::_0] = PHYSFSX_readByte(fp);
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dl->vert_light[side_relative_vertnum::_1] = PHYSFSX_readByte(fp);
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dl->vert_light[side_relative_vertnum::_2] = PHYSFSX_readByte(fp);
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dl->vert_light[side_relative_vertnum::_3] = PHYSFSX_readByte(fp);
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}
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/*
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* reads a dl_index structure from a PHYSFS_File
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*/
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void dl_index_read(dl_index *di, PHYSFS_File *fp)
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{
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{
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const auto s = segnum_t{static_cast<uint16_t>(PHYSFSX_readShort(fp))};
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di->segnum = vmsegidx_t::check_nothrow_index(s) ? s : segment_none;
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}
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di->sidenum = build_sidenum_from_untrusted(PHYSFSX_readByte(fp)).value_or(sidenum_t::WLEFT);
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di->count = PHYSFSX_readByte(fp);
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di->index = PHYSFSX_readShort(fp);
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}
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void segment2_write(const cscusegment s2, PHYSFS_File *fp)
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{
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PHYSFSX_writeU8(fp, underlying_value(s2.s.special));
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PHYSFSX_writeU8(fp, underlying_value(s2.s.matcen_num));
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PHYSFSX_writeU8(fp, underlying_value(s2.s.station_idx));
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PHYSFSX_writeU8(fp, s2.s.s2_flags);
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PHYSFSX_writeFix(fp, s2.u.static_light);
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}
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void delta_light_write(const delta_light *dl, PHYSFS_File *fp)
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{
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PHYSFS_writeSLE16(fp, dl->segnum);
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PHYSFSX_writeU8(fp, underlying_value(dl->sidenum));
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PHYSFSX_writeU8(fp, 0);
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PHYSFSX_writeU8(fp, dl->vert_light[side_relative_vertnum::_0]);
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PHYSFSX_writeU8(fp, dl->vert_light[side_relative_vertnum::_1]);
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PHYSFSX_writeU8(fp, dl->vert_light[side_relative_vertnum::_2]);
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PHYSFSX_writeU8(fp, dl->vert_light[side_relative_vertnum::_3]);
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}
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void dl_index_write(const dl_index *di, PHYSFS_File *fp)
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{
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PHYSFS_writeSLE16(fp, di->segnum);
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PHYSFSX_writeU8(fp, underlying_value(di->sidenum));
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PHYSFSX_writeU8(fp, di->count);
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PHYSFS_writeSLE16(fp, di->index);
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}
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}
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#endif
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