Support for changing the game's timescale

Context-specific (like per-world) timescales can also be added later

4 files changed, 8 insertions, 9 deletions

diff --git a/source/rendering/StarEnvironmentPainter.cpp b/source/rendering/StarEnvironmentPainter.cpp
index aa2763b..816281b 100644
--- a/source/rendering/StarEnvironmentPainter.cpp
+++ b/source/rendering/StarEnvironmentPainter.cpp
@@ -29,16 +29,13 @@ EnvironmentPainter::EnvironmentPainter(RendererPtr renderer) {
   m_renderer = move(renderer);
   m_textureGroup = make_shared<AssetTextureGroup>(m_renderer->createTextureGroup(TextureGroupSize::Large));
   m_timer = 0;
-  m_lastTime = 0;
   m_rayPerlin = PerlinF(1, RayPerlinFrequency, RayPerlinAmplitude, 0, 2.0f, 2.0f, Random::randu64());
 }
 
-void EnvironmentPainter::update() {
+void EnvironmentPainter::update(float dt) {
   // Allows the rays to change alpha with time.
-  int64_t currentTime = Time::monotonicMilliseconds();
-  m_timer += (currentTime - m_lastTime) / 1000.0;
+  m_timer += dt;
   m_timer = std::fmod(m_timer, Constants::pi * 100000.0);
-  m_lastTime = currentTime;
 }
 
 void EnvironmentPainter::renderStars(float pixelRatio, Vec2F const& screenSize, SkyRenderData const& sky) {
diff --git a/source/rendering/StarEnvironmentPainter.hpp b/source/rendering/StarEnvironmentPainter.hpp
index 3a90b69..4b9fdb8 100644
--- a/source/rendering/StarEnvironmentPainter.hpp
+++ b/source/rendering/StarEnvironmentPainter.hpp
@@ -17,7 +17,7 @@ class EnvironmentPainter {
 public:
   EnvironmentPainter(RendererPtr renderer);
 
-  void update();
+  void update(float dt);
 
   void renderStars(float pixelRatio, Vec2F const& screenSize, SkyRenderData const& sky);
   void renderDebrisFields(float pixelRatio, Vec2F const& screenSize, SkyRenderData const& sky);
@@ -67,7 +67,6 @@ private:
   AssetTextureGroupPtr m_textureGroup;
 
   double m_timer;
-  int64_t m_lastTime;
   PerlinF m_rayPerlin;
 
   uint64_t m_starsHash;
diff --git a/source/rendering/StarWorldPainter.cpp b/source/rendering/StarWorldPainter.cpp
index e033ee1..d89cfe1 100644
--- a/source/rendering/StarWorldPainter.cpp
+++ b/source/rendering/StarWorldPainter.cpp
@@ -45,14 +45,16 @@ WorldCamera& WorldPainter::camera() {
   return m_camera;
 }
 
+void WorldPainter::update(float dt) {
+  m_environmentPainter->update(dt);
+}
+
 void WorldPainter::render(WorldRenderData& renderData, function<void()> lightWaiter) {
   m_camera.setScreenSize(m_renderer->screenSize());
   m_camera.setTargetPixelRatio(Root::singleton().configuration()->get("zoomLevel").toFloat());
 
   m_assets = Root::singleton().assets();
 
-  m_environmentPainter->update();
-
   m_tilePainter->setup(m_camera, renderData);
 
   // Stars, Debris Fields, Sky, and Orbiters
diff --git a/source/rendering/StarWorldPainter.hpp b/source/rendering/StarWorldPainter.hpp
index 0ae6a7d..ce7f1d8 100644
--- a/source/rendering/StarWorldPainter.hpp
+++ b/source/rendering/StarWorldPainter.hpp
@@ -23,6 +23,7 @@ public:
 
   WorldCamera& camera();
 
+  void update(float dt);
   void render(WorldRenderData& renderData, function<void()> lightWaiter);
   void adjustLighting(WorldRenderData& renderData);