078a9affa0
Iterating over it returns each side number in turn. This allows converting many loops of the form: ``` for (int i = 0; i < MAX_SIDES_PER_SEGMENT; ++i) ``` to the compact form: ``` for (const auto i : MAX_SIDES_PER_SEGMENT) ``` The compact form brings the usual benefit of range-based for: delegating iteration to the compiler prevents the loop body from skipping a step, and makes clear in the code that this is the case.
199 lines
6.5 KiB
C++
199 lines
6.5 KiB
C++
/*
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* Portions of this file are copyright Rebirth contributors and licensed as
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* described in COPYING.txt.
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* Portions of this file are copyright Parallax Software and licensed
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* according to the Parallax license.
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* See COPYING.txt for license details.
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*/
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#pragma once
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#include <optional>
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#include <type_traits>
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#include <physfs.h>
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#include "maths.h"
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#include <cstdint>
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#include "cpp-valptridx.h"
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#include "d_crange.h"
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namespace dcx {
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constexpr std::integral_constant<std::size_t, 9000> MAX_SEGMENTS{};
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using segnum_t = uint16_t;
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struct d_level_unique_automap_state;
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}
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#ifdef dsx
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namespace dcx {
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struct shared_segment;
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struct unique_segment;
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struct segment;
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template <typename S, typename U>
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struct susegment;
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using msmusegment = susegment<shared_segment, unique_segment>;
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using mscusegment = susegment<shared_segment, const unique_segment>; /* unusual, but supported */
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using csmusegment = susegment<const shared_segment, unique_segment>;
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using cscusegment = susegment<const shared_segment, const unique_segment>;
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}
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DXX_VALPTRIDX_DECLARE_SUBTYPE(dcx::, segment, segnum_t, MAX_SEGMENTS);
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#endif
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#include "fwd-valptridx.h"
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#include "dsx-ns.h"
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#include <array>
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namespace dcx {
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constexpr std::integral_constant<std::size_t, 8> MAX_VERTICES_PER_SEGMENT{};
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constexpr std::integral_constant<std::size_t, 4> MAX_VERTICES_PER_POLY{};
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constexpr std::size_t MAX_SEGMENTS_ORIGINAL = 900;
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constexpr std::integral_constant<std::size_t, 4 * MAX_SEGMENTS_ORIGINAL> MAX_SEGMENT_VERTICES_ORIGINAL{};
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constexpr std::integral_constant<std::size_t, 4 * MAX_SEGMENTS> MAX_SEGMENT_VERTICES{};
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#ifdef dsx
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DXX_VALPTRIDX_DEFINE_SUBTYPE_TYPEDEFS(segment, seg);
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static constexpr valptridx<segment>::magic_constant<0xfffe> segment_exit{};
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static constexpr valptridx<segment>::magic_constant<0xffff> segment_none{};
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static constexpr valptridx<segment>::magic_constant<0> segment_first{};
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#endif
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}
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#ifdef dsx
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namespace dsx {
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void delete_segment_from_group(vmsegptridx_t segment_num, unsigned group_num);
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}
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#endif
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namespace dcx {
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enum class materialization_center_number : uint8_t;
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enum class station_number : uint8_t;
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typedef uint_fast32_t sidenum_fast_t;
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enum sidenum_t : uint8_t
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{
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WLEFT = 0,
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WTOP = 1,
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WRIGHT = 2,
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WBOTTOM = 3,
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WBACK = 4,
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WFRONT = 5
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};
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[[nodiscard]]
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std::optional<sidenum_t> build_sidenum_from_untrusted(uint8_t untrusted);
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constexpr constant_xrange<sidenum_t, sidenum_t{0}, sidenum_t{6}> MAX_SIDES_PER_SEGMENT{};
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constexpr std::integral_constant<sidenum_t, sidenum_t{MAX_SIDES_PER_SEGMENT.value}> side_none{};
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using texture_index = uint16_t;
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enum class texture1_value : uint16_t;
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enum class texture2_value : uint16_t;
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enum class texture2_rotation_low : uint8_t;
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enum class texture2_rotation_high : uint16_t;
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//normal everyday vertices
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constexpr std::integral_constant<fix, 0> DEFAULT_LIGHTING{}; // (F1_0/2)
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#if DXX_USE_EDITOR //verts for the new segment
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constexpr std::integral_constant<std::size_t, 8> NUM_NEW_SEG_VERTICES{};
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constexpr std::integral_constant<unsigned, MAX_SEGMENT_VERTICES> NEW_SEGMENT_VERTICES{};
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constexpr std::integral_constant<std::size_t, MAX_SEGMENT_VERTICES + NUM_NEW_SEG_VERTICES> MAX_VERTICES{};
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#else //No editor
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constexpr std::integral_constant<std::size_t, MAX_SEGMENT_VERTICES> MAX_VERTICES{};
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#endif
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struct uvl;
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enum class side_type : uint8_t;
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enum class wallnum_t : uint16_t;
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struct shared_side;
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struct unique_side;
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struct vertex;
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enum class vertnum_t : uint32_t;
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enum class segment_special : uint8_t;
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}
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/* `vertex` has only integer members, so wild reads are unlikely to
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* cause serious harm. It is read far more than it is written, so
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* eliminating checking on reads saves substantial code space.
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*
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* Vertex indices are only taken from map data, not network data, so
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* errors are unlikely. Report them tersely to avoid recording the
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* file+line of every access.
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*/
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#define DXX_VALPTRIDX_REPORT_ERROR_STYLE_const_vertex undefined
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#define DXX_VALPTRIDX_REPORT_ERROR_STYLE_mutable_vertex trap_terse
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DXX_VALPTRIDX_DECLARE_SUBTYPE(dcx::, vertex, vertnum_t, MAX_VERTICES);
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#if defined(DXX_BUILD_DESCENT_I)
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constexpr std::integral_constant<std::size_t, 5> MAX_CENTER_TYPES{};
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#elif defined(DXX_BUILD_DESCENT_II)
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typedef unsigned s2f_ambient_t;
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constexpr std::integral_constant<s2f_ambient_t, 1> S2F_AMBIENT_WATER{};
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constexpr std::integral_constant<s2f_ambient_t, 2> S2F_AMBIENT_LAVA{};
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constexpr std::integral_constant<std::size_t, 7> MAX_CENTER_TYPES{};
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#endif
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namespace dcx {
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DXX_VALPTRIDX_DEFINE_SUBTYPE_TYPEDEFS(vertex, vert);
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struct count_segment_array_t;
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struct group;
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struct d_level_shared_vertex_state;
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struct d_level_shared_segment_state;
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struct d_level_unique_segment_state;
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extern const std::array<std::array<unsigned, 4>, MAX_SIDES_PER_SEGMENT> Side_to_verts; // Side_to_verts[my_side] is list of vertices forming side my_side.
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extern const std::array<sidenum_t, MAX_SIDES_PER_SEGMENT> Side_opposite; // Side_opposite[my_side] returns side opposite cube from my_side.
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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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void add_segment_to_group(segnum_t segment_num, int group_num);
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#if defined(DXX_BUILD_DESCENT_II)
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namespace dsx {
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struct delta_light;
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struct dl_index;
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struct d_level_shared_destructible_light_state;
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struct d_level_shared_segment_state;
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constexpr std::integral_constant<std::size_t, 32000> MAX_DELTA_LIGHTS{}; // Original D2: 10000;
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constexpr std::integral_constant<fix, 2048> DL_SCALE{}; // Divide light to allow 3 bits integer, 5 bits fraction.
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using d_delta_light_array = std::array<delta_light, MAX_DELTA_LIGHTS>;
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void clear_light_subtracted();
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void segment2_write(const cscusegment s2, PHYSFS_File *fp);
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void delta_light_read(delta_light *dl, PHYSFS_File *fp);
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void delta_light_write(const delta_light *dl, PHYSFS_File *fp);
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void dl_index_read(dl_index *di, PHYSFS_File *fp);
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void dl_index_write(const dl_index *di, PHYSFS_File *fp);
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enum class dlindexnum_t : uint16_t;
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}
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#define DXX_VALPTRIDX_REPORT_ERROR_STYLE_default_dl_index trap_terse
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DXX_VALPTRIDX_DECLARE_SUBTYPE(dsx::, dl_index, ::dsx::dlindexnum_t, 500);
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namespace dsx {
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DXX_VALPTRIDX_DEFINE_SUBTYPE_TYPEDEFS(dl_index, dlindex);
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int subtract_light(const d_level_shared_destructible_light_state &LevelSharedDestructibleLightState, vmsegptridx_t segnum, sidenum_fast_t sidenum);
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int add_light(const d_level_shared_destructible_light_state &LevelSharedDestructibleLightState, vmsegptridx_t segnum, sidenum_fast_t sidenum);
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}
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#endif
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namespace dcx {
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template <unsigned bits>
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class visited_segment_mask_t;
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using visited_segment_bitarray_t = visited_segment_mask_t<1>;
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constexpr std::integral_constant<int, -1> edge_none{};
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}
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