(slightly) better camera handling

[blobs.git] / src / app / states.cpp

diff --git a/src/app/states.cpp b/src/app/states.cpp
index 67c073a0d5292b5c6548b0c04044d810f6e5d817..b9fc57a4c3c15ea179d4a83b34490c513c34ecc7 100644 (file)
--- a/src/app/states.cpp
+++ b/src/app/states.cpp
@@ -1,7 +1,9 @@
 #include "MasterState.hpp"
 
 #include "../world/Body.hpp"
+#include "../world/Planet.hpp"
 #include "../world/Simulation.hpp"
+#include "../world/Sun.hpp"
 
 #include <glm/gtx/transform.hpp>
 
@@ -13,17 +15,10 @@ MasterState::MasterState(Assets &assets, world::Simulation &sim) noexcept
 : State()
 , assets(assets)
 , sim(sim)
-, reference(&sim.Root())
-, cam()
+, cam(sim.Root())
 , remain(0)
 , thirds(0)
 , paused(false) {
-       // sunset view: standing in the center of surface 0 (+Z), looking west (-X)
-       //cam.View(glm::lookAt(glm::vec3(0.0f, 0.0f, 5.6f), glm::vec3(-1.0f, 0.0f, 5.6f), glm::vec3(0.0f, 0.0f, 1.0f)));
-       // sunrise view: standing in the center of surface 0 (+Z), looking east (+X)
-       cam.View(glm::lookAt(glm::vec3(0.0f, 0.0f, 5.6f), glm::vec3(1.0f, 0.0f, 5.6f), glm::vec3(0.0f, 0.0f, 1.0f)));
-       // far out, looking at planet
-       //cam.View(glm::lookAt(glm::vec3(10.0f, 10.0f, 50.0f), glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 1.0f, 0.0f)));
 }
 
 MasterState::~MasterState() noexcept {
@@ -61,22 +56,25 @@ void MasterState::OnKeyDown(const SDL_KeyboardEvent &e) {
 }
 
 void MasterState::OnRender(graphics::Viewport &viewport) {
-       glm::dmat4 ppos = reference->InverseTransform() * reference->ToParent();
+       glm::dmat4 ppos = cam.Model(**sim.Suns().begin());
        assets.shaders.planet_surface.Activate();
        assets.shaders.planet_surface.SetTexture(assets.textures.tiles);
+       assets.shaders.planet_surface.SetLight(glm::vec3(cam.View() * ppos[3]), glm::vec3(1.0f, 1.0f, 1.0f), 1.0e6f);
 
-       assets.shaders.planet_surface.SetMVP(glm::mat4(1.0f), cam.View(), cam.Projection());
-       assets.shaders.planet_surface.SetLight(glm::vec3(cam.View() * ppos[3]), glm::vec3(1.0f, 1.0f, 1.0f), 2.0e4f);
-       reference->Draw(assets, viewport);
-
-       world::Body *child = reference->Children()[0];
-       assets.shaders.planet_surface.SetMVP(reference->InverseTransform() * child->FromParent() * child->LocalTransform(), cam.View(), cam.Projection());
-       child->Draw(assets, viewport);
+       for (auto planet : sim.Planets()) {
+               assets.shaders.planet_surface.SetMVP(cam.Model(*planet), cam.View(), cam.Projection());
+               planet->Draw(assets, viewport);
+       }
 
        assets.shaders.sun_surface.Activate();
-       assets.shaders.sun_surface.SetMVP(ppos * reference->Parent().LocalTransform(), cam.View(), cam.Projection());
-       assets.shaders.sun_surface.SetLight(glm::vec3(1.0f, 1.0f, 1.0f), 2.0e4f);
-       assets.shaders.sun_surface.Draw();
+       for (auto sun : sim.Suns()) {
+               double sun_radius = sun->Radius();
+               assets.shaders.sun_surface.SetMVP(
+                       cam.Model(*sun) * glm::scale(glm::vec3(sun_radius, sun_radius, sun_radius)),
+                       cam.View(), cam.Projection());
+               assets.shaders.sun_surface.SetLight(glm::vec3(1.0f, 1.0f, 1.0f), 1.0e6f);
+               assets.shaders.sun_surface.Draw();
+       }
 }
 
 }