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2660d14565
Today's work on the binary scene format plan (binary-scene-format-plan.md), from the first measurement to a terrain that bakes itself on first run and streams from a thread. The step-by-step history is kept on backup/scene-streaming-format-presquash-0916. Measuring first. -loadprofile times a scenery load by stage and by node kind and reports node counts and resident memory. On l204 terrain is 95% of the bytes and 99.8% of the nodes; on quarkmce2007 vehicles, not models, dominate what is left. The terrain turned out to be a heightfield in all but name, a ribbon covering 12% of its bounding box. The heightfield. scene/heightfieldformat.h is the .ehf layout: Morton-ordered tiles of 128 samples with one shared edge sample, a point-sampled mip chain, zstd per tile, a nodata sentinel, a material palette with a measured tiling per material, and a stamp of the rules that decided what counted as terrain. scene/heightfieldreader.h reads it for the tool, the renderer and the loader alike, and scene/terraincooker.h writes it, shared by the terraincook tool and the engine so a first-run bake is the file the tool would have made. The cooker rasterises every triangle where it is drawn (through scene::place_in_world, the placement the region applies too), keeps an upper surface laid within half a metre over another and the lower of two further apart, and then asks each triangle whether the heightfield shows it: laid, reaching a sample, keeping nearly all it claimed, and with the ground around it drawn at every level out to 2 km. Baking on first run. simulation/terrainbake bakes <scenario>.ehf the first time a scenery is opened, choosing the grid step from the first 200,000 vertices, and on later loads leaves out the triangles its node table says the heightfield shows. Everything else - trees, grass tufts, gantries, bridge decks - is drawn as written, so a bad bake can at worst draw something twice, and the heightfield sits 2 cm under the triangles so the original wins there. Nodes are keyed by file, line, include parameters and placement; an edited file changes its keys and those nodes are drawn again. A bake under older rules, or without its table, is thrown away and redone. A launcher copy named $scenario shares the scenario's files. -nobaketerrain shows the triangles as written. A scenery can still name hand-cooked fields, several at different steps. Drawing and streaming. rendering/terrainclipmap draws resident tiles at the mip level their distance earns, deriving the grid from gl_VertexID and texturing in world space with the scenery's own materials. rendering/terraintileloader reads and decodes tiles on a thread of its own; the renderer rescans what is in range only after moving a quarter of a tile, asks for what is missing nearest first, uploads at most 32 tiles a frame, drops arrivals the camera has moved past, and keeps drawing a tile at the level it has until the right one arrives. The terrain has its own range, terrainrange in the ini and a slider in the debug panel, 20 km by default and independent of basedrawrange; the far plane of an ordinary view is pushed out to it. The debug panel shows the range, tiles in view, on the gpu, wanted and queued, and how many sit at each level. Events. The event queue moved out of the events into a binary heap with a deterministic tie-break, and an event is handed its activator instead of storing it, so basic_event is a definition and nothing else. The logic container. scene/logicformat.h and scene/logiccontainer write a scenery's events, their targets and sibling chains as flat, deterministic arrays with a schema hash that refuses a mismatched build. simulation/logiccook cooks it from the loaded state whenever it is missing, stale or unreadable, reads it straight back to check it, and resolves each target to a position in the registry its event kind searches. -cooklogic forces a cook, -verifylogic only checks. Nothing reads it at load yet. Prefabs. scene/prefab describes a signal by the aspects it can show - lights, speeds, animation channels, a sound - instead of pasting an .inc per variant, and expands an instance to ordinary scenery text. Tried on a light signal and a shape signal. Screenshots without a person present: -shot x,y,z[,yaw[,pitch]], -shotsettle, -shotstay.
514 lines
21 KiB
C++
514 lines
21 KiB
C++
module;
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#include <utility>
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#include <chrono>
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#include <limits>
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#include <mutex>
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#include <sstream>
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#include <type_traits>
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#include <cstddef>
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#include <functional>
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#include <istream>
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#include <ostream>
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#include <string>
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#include <tuple>
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#include <iosfwd>
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#include <cmath>
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#include <vector>
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#include <deque>
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#include <array>
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#include <stack>
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#include <unordered_set>
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#include <unordered_map>
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#include <map>
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#include "utilities/utilities_macros.h"
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export module eu07.simcore:scene;
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import :fwd;
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import eu07.input.command;
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import eu07.utilities.parser;
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import :scenenode;
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import :track;
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import :traction;
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import eu07.utilities.utilities;
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export {
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/*
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This Source Code Form is subject to the
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terms of the Mozilla Public License, v.
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2.0. If a copy of the MPL was not
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distributed with this file, You can
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obtain one at
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http://mozilla.org/MPL/2.0/.
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*/
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namespace scene {
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int constexpr EU07_CELLSIZE = 250;
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int constexpr EU07_SECTIONSIZE = 1000;
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int constexpr EU07_REGIONSIDESECTIONCOUNT = 500; // number of sections along a side of square region
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struct scratch_data {
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struct binary_data {
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bool terrain{ false };
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bool terrain_included{false};
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} binary;
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struct location_data {
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std::stack<glm::dvec3> offset;
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// per-axis scale stack — mirrors `offset` for the `scale`/`endscale`
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// scenario directives. Effective scale at any nesting depth is the
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// component-wise product of all stack entries (outer `scale 2 2 2` ×
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// inner `scale 1.5 1.5 1.5` yields (3,3,3)). Empty stack means (1,1,1).
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std::stack<glm::vec3> scale;
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glm::vec3 rotation;
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} location;
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struct trainset_data {
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std::string name;
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std::string track;
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float offset { 0.f };
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float velocity { 0.f };
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std::vector<TDynamicObject *> vehicles;
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std::vector<int> couplings;
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TDynamicObject * driver { nullptr };
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bool is_open { false };
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std::unordered_map<std::string, std::string> assignment;
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} trainset;
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std::string name;
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std::string terrain_name;
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bool initialized { false };
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bool time_initialized { false };
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};
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// basic element of rudimentary partitioning scheme for the section. fixed size, no further subdivision
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// TBD, TODO: replace with quadtree scheme?
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class basic_cell {
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public:
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// constructors
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basic_cell() = default;
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// methods
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// potentially activates event handler with the same name as provided node, and within handler activation range
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void
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on_click( TAnimModel const *Instance );
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// legacy method, finds and assigns traction piece to specified pantograph of provided vehicle
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void
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update_traction( TDynamicObject *Vehicle, int const Pantographindex );
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// legacy method, polls event launchers within radius around specified point
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void
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update_events();
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// legacy method, updates sounds within radius around specified point
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void
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update_sounds();
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// legacy method, triggers radio-stop procedure for all vehicles located on paths in the cell
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void
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radio_stop();
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// legacy method, adds specified path to the list of pieces undergoing state change
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bool
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RaTrackAnimAdd( TTrack *Track );
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// legacy method, updates geometry for pieces in the animation list
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void
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RaAnimate( unsigned int const Framestamp );
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// sends content of the class to provided stream
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void
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serialize( std::ostream &Output ) const;
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// restores content of the class from provided stream
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void
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deserialize( std::istream &Input );
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// sends content of the class in legacy (text) format to provided stream
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void
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export_as_text( std::ostream &Output ) const;
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// adds provided shape to the cell
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void
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insert( shape_node Shape );
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// adds provided lines to the cell
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void
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insert( lines_node Lines );
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// adds provided path to the cell
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void
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insert( TTrack *Path );
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// adds provided path to the cell
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void
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insert( TTraction *Traction );
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// adds provided model instance to the cell
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void
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insert( TAnimModel *Instance );
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// adds provided sound instance to the cell
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void
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insert( sound_source *Sound );
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// adds provided event launcher to the cell
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void
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insert( TEventLauncher *Launcher );
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// adds provided memory cell to the cell
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void
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insert( TMemCell *Memorycell );
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// registers provided path in the lookup directory of the cell
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void
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register_end( TTrack *Path );
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// registers provided traction piece in the lookup directory of the cell
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void
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register_end( TTraction *Traction );
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// removes provided model instance from the cell
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void
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erase( TAnimModel *Instance );
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// removes provided memory cell from the cell
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void
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erase( TMemCell *Memorycell );
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// find a vehicle located nearest to specified point, within specified radius. reurns: located vehicle and distance
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std::tuple<TDynamicObject *, float>
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find( glm::dvec3 const &Point, float const Radius, bool const Onlycontrolled, bool const Findbycoupler ) const;
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// finds a path with one of its ends located in specified point. returns: located path and id of the matching endpoint
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std::tuple<TTrack *, int>
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find( glm::dvec3 const &Point, TTrack const *Exclude ) const;
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// finds a traction piece with one of its ends located in specified point. returns: located traction piece and id of the matching endpoint
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std::tuple<TTraction *, int>
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find( glm::dvec3 const &Point, TTraction const *Exclude ) const;
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// finds a traction piece located nearest to specified point, sharing section with specified other piece and powered in specified direction. returns: located traction piece
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std::tuple<TTraction *, int, float>
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find( glm::dvec3 const &Point, TTraction const *Other, int const Currentdirection ) const;
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// sets center point of the cell
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void
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center( glm::dvec3 Center );
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// generates renderable version of held non-instanced geometry in specified geometry bank
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void
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create_geometry( gfx::geometrybank_handle const &Bank );
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void
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create_map_geometry(std::vector<gfx::basic_vertex> &Bank, const gfx::geometrybank_handle Extra);
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void
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get_map_active_paths(map_colored_paths &handles);
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glm::vec3 find_nearest_track_point(const glm::dvec3 &pos);
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// provides access to bounding area data
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bounding_area const &
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area() const {
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return m_area; }
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//private:
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// types
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using path_sequence = std::vector<TTrack *>;
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using shapenode_sequence = std::vector<shape_node>;
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using linesnode_sequence = std::vector<lines_node>;
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using traction_sequence = std::vector<TTraction *>;
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using instance_sequence = std::vector<TAnimModel *>;
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// Composite key: instances of the same TModel3d sharing the same replacable
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// skin set can be GPU-batched together, but instances with different skins
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// must go to different buckets so each batched draw call uses one consistent
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// material binding. Sub-bucketing here keeps Render_Instanced correct without
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// forcing per-instance material switching inside a single batch.
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struct instance_bucket_key {
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TModel3d *pModel { nullptr };
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std::array<material_handle, 5> skins {};
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bool operator==( instance_bucket_key const &other ) const {
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return pModel == other.pModel && skins == other.skins;
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}
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};
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struct instance_bucket_key_hash {
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std::size_t operator()( instance_bucket_key const &k ) const {
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std::size_t h = std::hash<TModel3d *>()( k.pModel );
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for( auto s : k.skins ) {
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// boost-style hash combine
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h ^= std::hash<int>()( s ) + 0x9e3779b9 + ( h << 6 ) + ( h >> 2 );
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}
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return h;
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}
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};
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using instance_bucket_map = std::unordered_map< instance_bucket_key, std::vector<TAnimModel *>, instance_bucket_key_hash >;
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using sound_sequence = std::vector<sound_source *>;
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using eventlauncher_sequence = std::vector<TEventLauncher *>;
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using memorycell_sequence = std::vector<TMemCell *>;
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// methods
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void
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launch_event(TEventLauncher *Launcher, bool local_only);
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void
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enclose_area( scene::basic_node *Node );
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// members
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scene::bounding_area m_area { glm::dvec3(), static_cast<float>( 0.5 * M_SQRT2 * EU07_CELLSIZE ) };
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bool m_active { false }; // whether the cell holds any actual data content
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shapenode_sequence m_shapesopaque; // opaque pieces of geometry
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shapenode_sequence m_shapestranslucent; // translucent pieces of geometry
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linesnode_sequence m_lines;
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path_sequence m_paths; // path pieces
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instance_sequence m_instancesopaque;
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instance_sequence m_instancetranslucent;
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// batched instance buckets keyed by shared TModel3d*; populated alongside
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// m_instancesopaque for nodes whose TAnimModel::m_instanceable == true.
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// The renderer uses these to amortise per-model state setup across many instances.
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instance_bucket_map m_instancebuckets_opaque;
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traction_sequence m_traction;
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sound_sequence m_sounds;
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eventlauncher_sequence m_eventlaunchers;
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memorycell_sequence m_memorycells;
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// search helpers
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struct lookup_data {
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path_sequence paths;
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traction_sequence traction;
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} m_directories;
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// animation of owned items (legacy code, clean up along with track refactoring)
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bool m_geometrycreated { false };
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unsigned int m_framestamp { 0 }; // id of last rendered gfx frame
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TTrack *tTrackAnim = nullptr; // obiekty do przeliczenia animacji
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command_relay m_relay;
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};
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// basic scene partitioning structure, holds terrain geometry and collection of cells
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class basic_section {
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public:
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// constructors
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basic_section() = default;
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// methods
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// potentially activates event handler with the same name as provided node, and within handler activation range
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void
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on_click( TAnimModel const *Instance );
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// legacy method, finds and assigns traction piece to specified pantograph of provided vehicle
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void
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update_traction( TDynamicObject *Vehicle, int const Pantographindex );
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// legacy method, updates sounds and polls event launchers within radius around specified point
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void
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update_events( glm::dvec3 const &Location, float const Radius );
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// legacy method, updates sounds and polls event launchers within radius around specified point
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void
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update_sounds( glm::dvec3 const &Location, float const Radius );
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// legacy method, triggers radio-stop procedure for all vehicles in 2km radius around specified location
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void
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radio_stop( glm::dvec3 const &Location, float const Radius );
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// sends content of the class to provided stream
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void
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serialize( std::ostream &Output ) const;
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// restores content of the class from provided stream
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void
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deserialize( std::istream &Input );
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// sends content of the class in legacy (text) format to provided stream
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void
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export_as_text( std::ostream &Output ) const;
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// adds provided shape to the section
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void
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insert( shape_node Shape );
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// adds provided lines to the section
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void
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insert( lines_node Lines );
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// adds provided node to the section
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template <class Type_>
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void
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insert( Type_ *Node ) {
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auto &targetcell { cell( Node->location() ) };
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targetcell.insert( Node );
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// some node types can extend bounding area of the target cell
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m_area.radius = std::max(
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m_area.radius,
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static_cast<float>( glm::length( m_area.center - targetcell.area().center ) + targetcell.area().radius ) ); }
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// erases provided node from the section
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template <class Type_>
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void
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erase( Type_ *Node ) {
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auto &targetcell { cell( Node->location() ) };
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// TODO: re-calculate bounding area after removal
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targetcell.erase( Node ); }
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// registers provided node in the lookup directory of the section enclosing specified point
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template <class Type_>
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void
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register_node( Type_ *Node, glm::dvec3 const &Point ) {
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cell( Point ).register_end( Node ); }
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// find a vehicle located nearest to specified point, within specified radius. reurns: located vehicle and distance
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std::tuple<TDynamicObject *, float>
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find( glm::dvec3 const &Point, float const Radius, bool const Onlycontrolled, bool const Findbycoupler );
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// finds a path with one of its ends located in specified point. returns: located path and id of the matching endpoint
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std::tuple<TTrack *, int>
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find( glm::dvec3 const &Point, TTrack const *Exclude );
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// finds a traction piece with one of its ends located in specified point. returns: located traction piece and id of the matching endpoint
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std::tuple<TTraction *, int>
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find( glm::dvec3 const &Point, TTraction const *Exclude );
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// finds a traction piece located nearest to specified point, sharing section with specified other piece and powered in specified direction. returns: located traction piece
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std::tuple<TTraction *, int, float>
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find( glm::dvec3 const &Point, TTraction const *Other, int const Currentdirection );
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// sets center point of the section
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void
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center( glm::dvec3 Center );
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// generates renderable version of held non-instanced geometry
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void
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create_geometry();
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void
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create_map_geometry(const gfx::geometrybank_handle handle);
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void
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get_map_active_paths(map_colored_paths &handles);
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// provides access to bounding area data
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bounding_area const &
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area() const {
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return m_area; }
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const gfx::geometrybank_handle get_map_geometry()
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{ return m_map_geometryhandle;}
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glm::vec3 find_nearest_track_point(const glm::dvec3 &point);
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//private:
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// types
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using cell_array = std::array<basic_cell, EU07_SECTIONSIZE / EU07_CELLSIZE * (EU07_SECTIONSIZE / EU07_CELLSIZE)>;
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using shapenode_sequence = std::vector<shape_node>;
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// methods
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// provides access to section enclosing specified point
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basic_cell &
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cell(glm::dvec3 const &Location, const glm::ivec2 &offset = glm::ivec2(0));
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// members
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// placement and visibility
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scene::bounding_area m_area { glm::dvec3(), static_cast<float>( 0.5 * M_SQRT2 * EU07_SECTIONSIZE ) };
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// content
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cell_array m_cells; // partitioning scheme
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shapenode_sequence m_shapes; // large pieces of opaque geometry and (legacy) terrain
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// TODO: implement dedicated, higher fidelity, fixed resolution terrain mesh item
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// gfx renderer data
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gfx::geometrybank_handle m_geometrybank;
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bool m_geometrycreated { false };
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gfx::geometrybank_handle m_map_geometryhandle;
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};
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// top-level of scene spatial structure, holds collection of sections
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// whether a material belongs to the old hand-made switch trackbeds, which the engine
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// replaces with generated ones when CreateSwitchTrackbeds is on
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bool is_switch_trackbed( std::string const &Materialname );
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// moves shape vertices from the coordinates they were written in to world space, applying the
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// rotate and origin in force where the node stood. the one place this happens, so that anything
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// else looking at a shape - the terrain bake - sees it where it is drawn
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void place_in_world( std::vector<world_vertex> &Vertices, scratch_data const &Scratchpad );
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class basic_region {
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public:
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// constructors
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basic_region();
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// destructor
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~basic_region();
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// methods
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// potentially activates event handler with the same name as provided node, and within handler activation range
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void
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on_click( TAnimModel const *Instance );
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// legacy method, finds and assigns traction piece to specified pantograph of provided vehicle
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void
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update_traction( TDynamicObject *Vehicle, int const Pantographindex );
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// legacy method, polls event launchers around camera
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void
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update_events();
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// legacy method, updates sounds around camera
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void
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update_sounds();
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// checks whether specified file is a valid region data file
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bool
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is_scene( std::string const &Scenariofile ) const;
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// stores content of the class in file with specified name
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void
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serialize( std::string const &Scenariofile ) const;
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// restores content of the class from file with specified name. returns: true on success, false otherwise
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bool
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deserialize( std::string const &Scenariofile );
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// sends content of the class in legacy (text) format to provided stream
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void
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export_as_text( std::ostream &Output ) const;
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// legacy method, links specified path piece with potential neighbours
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void
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TrackJoin( TTrack *Track );
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// legacy method, triggers radio-stop procedure for all vehicles in 2km radius around specified location
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void
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RadioStop( glm::dvec3 const &Location );
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// inserts provided shape in the region
|
||
void
|
||
insert( shape_node Shape, scratch_data &Scratchpad, bool const Transform );
|
||
// inserts provided lines in the region
|
||
void
|
||
insert( lines_node Lines, scratch_data &Scratchpad );
|
||
// inserts provided node in the region
|
||
template <class Type_>
|
||
void
|
||
insert( Type_ *Node ) {
|
||
auto const location { Node->location() };
|
||
if( false == point_inside( location ) ) {
|
||
// NOTE: nodes placed outside of region boundaries are discarded
|
||
// TBD, TODO: clamp coordinates to region boundaries?
|
||
return; }
|
||
section( location ).insert( Node ); }
|
||
// inserts provided node in the region and registers its ends in lookup directory
|
||
template <class Type_>
|
||
void
|
||
insert_and_register( Type_ *Node ) {
|
||
insert( Node );
|
||
for( auto const &point : Node->endpoints() ) {
|
||
if( point_inside( point ) ) {
|
||
section( point ).register_node( Node, point ); } } }
|
||
// removes specified node from the region
|
||
template <class Type_>
|
||
void
|
||
erase( Type_ *Node ) {
|
||
auto const location{ Node->location() };
|
||
if( point_inside( location ) ) {
|
||
section( location ).erase( Node ); } }
|
||
// find a vehicle located nearest to specified point, within specified radius. reurns: located vehicle and distance
|
||
std::tuple<TDynamicObject *, float>
|
||
find_vehicle( glm::dvec3 const &Point, float const Radius, bool const Onlycontrolled, bool const Findbycoupler );
|
||
// finds a path with one of its ends located in specified point. returns: located path and id of the matching endpoint
|
||
std::tuple<TTrack *, int>
|
||
find_path( glm::dvec3 const &Point, TTrack const *Exclude );
|
||
// finds a traction piece with one of its ends located in specified point. returns: located traction piece and id of the matching endpoint
|
||
std::tuple<TTraction *, int>
|
||
find_traction( glm::dvec3 const &Point, TTraction const *Exclude );
|
||
// finds a traction piece located nearest to specified point, sharing section with specified other piece and powered in specified direction. returns: located traction piece
|
||
std::tuple<TTraction *, int>
|
||
find_traction( glm::dvec3 const &Point, TTraction const *Other, int const Currentdirection );
|
||
// finds sections inside specified sphere. returns: list of sections
|
||
std::vector<basic_section *> const &
|
||
sections( glm::dvec3 const &Point, float const Radius );
|
||
void
|
||
create_map_geometry();
|
||
void
|
||
update_poi_geometry();
|
||
basic_section* get_section(size_t section)
|
||
{ return m_sections[section]; }
|
||
gfx::geometrybank_handle
|
||
get_map_poi_geometry() { return m_map_poipoints; }
|
||
glm::vec3 find_nearest_track_point(const glm::dvec3 &pos)
|
||
{ return section(pos).find_nearest_track_point(pos); }
|
||
|
||
//private:
|
||
// types
|
||
using section_array = std::array<basic_section *, sq(EU07_REGIONSIDESECTIONCOUNT)>;
|
||
|
||
struct region_scratchpad {
|
||
|
||
std::vector<basic_section *> sections;
|
||
};
|
||
|
||
gfx::geometrybank_handle m_map_geometrybank;
|
||
gfx::geometrybank_handle m_map_poipoints;
|
||
|
||
// methods
|
||
// checks whether specified point is within boundaries of the region
|
||
bool
|
||
point_inside( glm::dvec3 const &Location );
|
||
// legacy method, trims provided shape to fit into a section. adds trimmed part at the end of provided list, returns true if changes were made
|
||
static
|
||
bool
|
||
RaTriangleDivider( shape_node &Shape, std::deque<shape_node> &Shapes );
|
||
// provides access to section enclosing specified point
|
||
basic_section &
|
||
section( glm::dvec3 const &Location );
|
||
|
||
// members
|
||
section_array m_sections;
|
||
region_scratchpad m_scratchpad;
|
||
|
||
};
|
||
|
||
// global hierarchy map for scene nodes
|
||
extern std::map<std::string, basic_node *> Hierarchy;
|
||
} // scene
|
||
|
||
//---------------------------------------------------------------------------
|
||
|
||
} // export
|