diff options
-rw-r--r-- | assetFactory/assimp.cpp | 2 | ||||
-rw-r--r-- | assetFactory/factoryMesh.cpp | 11 | ||||
-rw-r--r-- | game/environment.cpp | 94 | ||||
-rw-r--r-- | game/environment.h | 18 | ||||
-rw-r--r-- | game/gamestate.cpp | 3 | ||||
-rw-r--r-- | game/gamestate.h | 2 | ||||
-rw-r--r-- | lib/chronology.cpp | 12 | ||||
-rw-r--r-- | lib/chronology.h | 2 | ||||
-rw-r--r-- | lib/maths.h | 4 | ||||
-rw-r--r-- | test/Jamfile.jam | 1 | ||||
-rw-r--r-- | test/test-environment.cpp | 35 | ||||
-rw-r--r-- | test/test-render.cpp | 8 | ||||
-rw-r--r-- | ui/gameMainWindow.cpp | 8 |
13 files changed, 190 insertions, 10 deletions
diff --git a/assetFactory/assimp.cpp b/assetFactory/assimp.cpp index 1e11eda..e33783a 100644 --- a/assetFactory/assimp.cpp +++ b/assetFactory/assimp.cpp @@ -84,8 +84,8 @@ public: for (auto idx = f.mIndices; const auto fheh : mesh.fh_range(fh)) { const auto ouv = !amesh->mTextureCoords[0][*idx++]; mesh.set_texcoord2D(fheh, ouv); - mesh.property(mesh.materialFaceProperty, fh) = material; } + mesh.property(mesh.materialFaceProperty, fh) = material; } } } diff --git a/assetFactory/factoryMesh.cpp b/assetFactory/factoryMesh.cpp index bf4706e..eb9d525 100644 --- a/assetFactory/factoryMesh.cpp +++ b/assetFactory/factoryMesh.cpp @@ -25,11 +25,12 @@ FactoryMesh::createMesh() const std::vector<unsigned int> faceIndices; for (const auto & heh : mesh.fh_range(face)) { const auto & vertex = mesh.to_vertex_handle(heh); - const auto & textureUV = mesh.texcoord2D(heh); - const auto & point = mesh.point(vertex); - const auto & normal = useVertexNormals ? mesh.property(mesh.vertex_normals_pph(), vertex) - : mesh.property(mesh.face_normals_pph(), face); - Vertex outVertex {point * 1000.F, textureUV, normal, colour, material}; + Vertex outVertex {.pos = mesh.point(vertex) * 1000.F, + .texCoord = mesh.texcoord2D(heh), + .normal = useVertexNormals ? mesh.property(mesh.vertex_normals_pph(), vertex) + : mesh.property(mesh.face_normals_pph(), face), + .colour = colour, + .material = material}; if (const auto existingItr = std::find(vertices.rbegin(), vertices.rend(), outVertex); existingItr != vertices.rend()) { faceIndices.push_back(static_cast<unsigned int>(std::distance(existingItr, vertices.rend()) - 1)); diff --git a/game/environment.cpp b/game/environment.cpp new file mode 100644 index 0000000..19aad84 --- /dev/null +++ b/game/environment.cpp @@ -0,0 +1,94 @@ +#include "environment.h" +#include <chronology.h> +#include <gfx/gl/sceneRenderer.h> + +Environment::Environment() : worldTime {"2024-01-01T12:00:00"_time_t} { } + +void +Environment::tick(TickDuration) +{ + worldTime += 50; +} + +void +Environment::render(const SceneRenderer & renderer, const SceneProvider & scene) const +{ + constexpr RGB baseAmbient {0.1F}, baseDirectional {0.0F}; + constexpr RGB relativeAmbient {0.3F, 0.3F, 0.4F}, relativeDirectional {0.6F, 0.6F, 0.5F}; + + const auto sunPos = getSunPos({}, worldTime); + const auto sunDir = (glm::mat3 {rotate_yp({sunPos.y + pi, sunPos.x})} * north); + const auto vertical = -std::min(0.F, sunDir.z - 0.1F); + const auto ambient = baseAmbient + relativeAmbient * vertical; + const auto directional = baseDirectional + relativeDirectional * vertical; + + renderer.setAmbientLight(ambient); + renderer.setDirectionalLight(directional, sunDir, scene); +} + +// Based on the C++ code published at https://www.psa.es/sdg/sunpos.htm +// Linked from https://www.pveducation.org/pvcdrom/properties-of-sunlight/suns-position-to-high-accuracy +Direction2D +Environment::getSunPos(const Direction2D position, const time_t time) +{ + auto & longitude = position.x; + auto & latitude = position.y; + using std::acos; + using std::asin; + using std::atan2; + using std::cos; + using std::floor; + using std::sin; + using std::tan; + static const auto JD2451545 = "2000-01-01T12:00:00"_time_t; + + // Calculate difference in days between the current Julian Day + // and JD 2451545.0, which is noon 1 January 2000 Universal Time + // Calculate time of the day in UT decimal hours + const auto dDecimalHours = static_cast<float>(time % 86400) / 3600.F; + const auto dElapsedJulianDays = static_cast<float>(time - JD2451545) / 86400.F; + + // Calculate ecliptic coordinates (ecliptic longitude and obliquity of the + // ecliptic in radians but without limiting the angle to be less than 2*Pi + // (i.e., the result may be greater than 2*Pi) + const auto dOmega = 2.1429F - 0.0010394594F * dElapsedJulianDays; + const auto dMeanLongitude = 4.8950630F + 0.017202791698F * dElapsedJulianDays; // Radians + const auto dMeanAnomaly = 6.2400600F + 0.0172019699F * dElapsedJulianDays; + const auto dEclipticLongitude = dMeanLongitude + 0.03341607F * sin(dMeanAnomaly) + + 0.00034894F * sin(2 * dMeanAnomaly) - 0.0001134F - 0.0000203F * sin(dOmega); + const auto dEclipticObliquity = 0.4090928F - 6.2140e-9F * dElapsedJulianDays + 0.0000396F * cos(dOmega); + + // Calculate celestial coordinates ( right ascension and declination ) in radians + // but without limiting the angle to be less than 2*Pi (i.e., the result may be + // greater than 2*Pi) + const auto dSin_EclipticLongitude = sin(dEclipticLongitude); + const auto dY = cos(dEclipticObliquity) * dSin_EclipticLongitude; + const auto dX = cos(dEclipticLongitude); + auto dRightAscension = atan2(dY, dX); + if (dRightAscension < 0) { + dRightAscension = dRightAscension + two_pi; + } + const auto dDeclination = asin(sin(dEclipticObliquity) * dSin_EclipticLongitude); + + // Calculate local coordinates ( azimuth and zenith angle ) in degrees + const auto dGreenwichMeanSiderealTime = 6.6974243242F + 0.0657098283F * dElapsedJulianDays + dDecimalHours; + const auto dLocalMeanSiderealTime + = (dGreenwichMeanSiderealTime * 15.0F + (longitude / degreesToRads)) * degreesToRads; + const auto dHourAngle = dLocalMeanSiderealTime - dRightAscension; + const auto dLatitudeInRadians = latitude; + const auto dCos_Latitude = cos(dLatitudeInRadians); + const auto dSin_Latitude = sin(dLatitudeInRadians); + const auto dCos_HourAngle = cos(dHourAngle); + Direction2D udtSunCoordinates; + udtSunCoordinates.y + = (acos(dCos_Latitude * dCos_HourAngle * cos(dDeclination) + sin(dDeclination) * dSin_Latitude)); + udtSunCoordinates.x = atan2(-sin(dHourAngle), tan(dDeclination) * dCos_Latitude - dSin_Latitude * dCos_HourAngle); + if (udtSunCoordinates.x < 0) { + udtSunCoordinates.x = udtSunCoordinates.x + two_pi; + } + // Parallax Correction + const auto dParallax = (earthMeanRadius / astronomicalUnit) * sin(udtSunCoordinates.y); + udtSunCoordinates.y = half_pi - (udtSunCoordinates.y + dParallax); + + return udtSunCoordinates; +} diff --git a/game/environment.h b/game/environment.h new file mode 100644 index 0000000..a6f3036 --- /dev/null +++ b/game/environment.h @@ -0,0 +1,18 @@ +#pragma once + +#include "config/types.h" +#include "worldobject.h" + +class SceneRenderer; +class SceneProvider; + +class Environment : public WorldObject { +public: + Environment(); + void tick(TickDuration elapsed) override; + void render(const SceneRenderer &, const SceneProvider &) const; + static Direction2D getSunPos(const Direction2D position, const time_t time); + +private: + time_t worldTime; +}; diff --git a/game/gamestate.cpp b/game/gamestate.cpp index fcd4248..910e8a7 100644 --- a/game/gamestate.cpp +++ b/game/gamestate.cpp @@ -1,4 +1,5 @@ #include "gamestate.h" +#include "environment.h" #include <cassert> GameState * gameState {nullptr}; @@ -7,6 +8,8 @@ GameState::GameState() { assert(!gameState); gameState = this; + + environment = world.create<Environment>(); } GameState::~GameState() diff --git a/game/gamestate.h b/game/gamestate.h index f07f844..892aa69 100644 --- a/game/gamestate.h +++ b/game/gamestate.h @@ -7,6 +7,7 @@ class WorldObject; class GeoData; +class Environment; class GameState { public: @@ -17,6 +18,7 @@ public: Collection<WorldObject> world; std::shared_ptr<GeoData> geoData; + std::shared_ptr<Environment> environment; AssetFactory::Assets assets; }; diff --git a/lib/chronology.cpp b/lib/chronology.cpp new file mode 100644 index 0000000..8707bba --- /dev/null +++ b/lib/chronology.cpp @@ -0,0 +1,12 @@ +#include "chronology.h" + +time_t +operator""_time_t(const char * iso, size_t) +{ + struct tm tm {}; + + if (const auto end = strptime(iso, "%FT%T", &tm); !end || *end) { + throw std::invalid_argument("Invalid date"); + } + return mktime(&tm); +} diff --git a/lib/chronology.h b/lib/chronology.h index 1980116..688a1f7 100644 --- a/lib/chronology.h +++ b/lib/chronology.h @@ -1,5 +1,7 @@ #pragma once #include <chrono> +#include <ctime> using TickDuration = std::chrono::duration<float, std::chrono::seconds::period>; +time_t operator""_time_t(const char * iso, size_t); diff --git a/lib/maths.h b/lib/maths.h index 018ef0e..3127d3c 100644 --- a/lib/maths.h +++ b/lib/maths.h @@ -42,6 +42,10 @@ constexpr auto half_pi {glm::half_pi<float>()}; constexpr auto quarter_pi {half_pi / 2}; constexpr auto pi {glm::pi<float>()}; constexpr auto two_pi {glm::two_pi<float>()}; +constexpr auto degreesToRads = pi / 180.F; + +constexpr auto earthMeanRadius = 6371.01F; // In km +constexpr auto astronomicalUnit = 149597890.F; // In km template<glm::length_t D> constexpr inline GlobalPosition<D> diff --git a/test/Jamfile.jam b/test/Jamfile.jam index 0b830a8..3ab4c4c 100644 --- a/test/Jamfile.jam +++ b/test/Jamfile.jam @@ -63,6 +63,7 @@ run test-instancing.cpp : -- : test-glContainer : <library>test ; run perf-instancing.cpp : \< : test-instancing : <library>benchmark <library>test ; run test-glContainer.cpp : : : <library>test ; run test-pack.cpp : : : <library>test ; +run test-environment.cpp : : : <library>test ; compile test-static-enumDetails.cpp ; compile test-static-stream_support.cpp ; explicit perf-assetFactory ; diff --git a/test/test-environment.cpp b/test/test-environment.cpp new file mode 100644 index 0000000..b6e0e4f --- /dev/null +++ b/test/test-environment.cpp @@ -0,0 +1,35 @@ +#define BOOST_TEST_MODULE environment +#include <boost/test/data/test_case.hpp> +#include <boost/test/unit_test.hpp> +#include <cmath> +#include <stream_support.h> + +#include <chronology.h> +#include <config/types.h> +#include <game/environment.h> +#include <maths.h> + +using sunPosTestData = std::tuple<Direction2D, time_t, Direction2D>; +constexpr Direction2D Doncaster = {-1.1, 53.5}; +constexpr Direction2D NewYork = {74.0, 40.7}; +constexpr Direction2D Syndey = {-151.2, -33.9}; +constexpr Direction2D EqGM = {}; + +BOOST_DATA_TEST_CASE(sun_position, + boost::unit_test::data::make<sunPosTestData>({ + {EqGM, "2024-01-02T00:00:00"_time_t, {181.52F, -66.86F}}, + {EqGM, "2024-01-02T06:00:00"_time_t, {113.12F, -0.85F}}, + {EqGM, "2024-01-02T12:00:00"_time_t, {177.82F, 66.97F}}, + {EqGM, "2024-01-02T18:00:00"_time_t, {246.99F, 0.90F}}, + {EqGM, "2024-01-03T00:00:00"_time_t, {181.52F, -67.04F}}, + {EqGM, "2024-06-29T12:00:00"_time_t, {2.1F, 66.80F}}, + {Doncaster, "2024-06-29T12:00:00"_time_t, {176.34F, 59.64F}}, + {NewYork, "2024-06-29T12:00:00"_time_t, {278.04F, 27.34F}}, + {Syndey, "2024-06-29T12:00:00"_time_t, {106.13F, -63.29F}}, + }), + position, timeOfYear, expSunPos) +{ + const auto sunPos = Environment::getSunPos(position * degreesToRads, timeOfYear) / degreesToRads; + BOOST_CHECK_CLOSE(sunPos.x, expSunPos.x, 1.F); + BOOST_CHECK_CLOSE(sunPos.y, expSunPos.y, 1.F); +} diff --git a/test/test-render.cpp b/test/test-render.cpp index bb5a137..0a92689 100644 --- a/test/test-render.cpp +++ b/test/test-render.cpp @@ -1,3 +1,4 @@ +#include "game/environment.h" #define BOOST_TEST_MODULE test_render #include "testHelpers.h" @@ -32,6 +33,7 @@ class TestScene : public SceneProvider { std::shared_ptr<Plant> plant1; RailLinks rail; std::shared_ptr<GeoData> gd = std::make_shared<GeoData>(GeoData::createFlat({0, 0}, {1000000, 1000000}, 1)); + std::shared_ptr<Environment> env = std::make_shared<Environment>(); Terrain terrain {gd}; Water water {gd}; @@ -71,6 +73,12 @@ public: } void + environment(const SceneShader &, const SceneRenderer & r) const override + { + env->render(r, *this); + } + + void shadows(const ShadowMapper & shadowMapper) const override { terrain.shadows(shadowMapper); diff --git a/ui/gameMainWindow.cpp b/ui/gameMainWindow.cpp index 6168504..c53300b 100644 --- a/ui/gameMainWindow.cpp +++ b/ui/gameMainWindow.cpp @@ -1,16 +1,17 @@ #include "gameMainWindow.h" #include "editNetwork.h" #include "gameMainSelector.h" -#include "gfx/camera_controller.h" #include "manualCameraController.h" #include "modeHelper.h" #include "toolbar.h" #include "window.h" #include <SDL2/SDL.h> #include <collection.h> +#include <game/environment.h> #include <game/gamestate.h> #include <game/network/rail.h> #include <game/worldobject.h> // IWYU pragma: keep +#include <gfx/camera_controller.h> #include <gfx/renderable.h> #include <glad/gl.h> #include <glm/glm.hpp> @@ -65,10 +66,9 @@ GameMainWindow::content(const SceneShader & shader) const } void -GameMainWindow::environment(const SceneShader & s, const SceneRenderer & r) const +GameMainWindow::environment(const SceneShader &, const SceneRenderer & r) const { - // default for now - SceneProvider::environment(s, r); + gameState->environment->render(r, *this); } void |