hooray for könig lookup

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

diff --git a/src/app/states.cpp b/src/app/states.cpp
index 75d9fcf638cd4d7ae8258ad8757cc8f83d9975b1..cbb2309581f05d35f0babf00374b0b97729ccaf0 100644 (file)
--- a/src/app/states.cpp
+++ b/src/app/states.cpp
@@ -2,6 +2,7 @@
 
 #include "../creature/Creature.hpp"
 #include "../graphics/Viewport.hpp"
+#include "../math/const.hpp"
 #include "../world/Body.hpp"
 #include "../world/Planet.hpp"
 #include "../world/Simulation.hpp"
@@ -18,7 +19,13 @@ MasterState::MasterState(Assets &assets, world::Simulation &sim) noexcept
 , assets(assets)
 , sim(sim)
 , cam(sim.Root())
+, cam_dist(5.0)
+, cam_tgt_dist(5.0)
+, cam_orient(PI * 0.375, PI * 0.25, 0.0)
+, cam_dragging(false)
 , cp(assets)
+, rp(sim)
+, tp(sim)
 , remain(0)
 , thirds(0)
 , paused(false) {
@@ -45,17 +52,32 @@ void MasterState::OnResize(int w, int h) {
 
 void MasterState::OnUpdate(int dt) {
        remain += dt;
-       while (remain >= FrameMS()) {
+#ifdef NDEBUG
+       int max_tick = 10;
+#else
+       // one tick per frame when debugging so pausing execution doesn't result in more ticks
+       int max_tick = 1;
+#endif
+       while (remain >= FrameMS() && max_tick > 0) {
                Tick();
+               --max_tick;
        }
 }
 
 void MasterState::Tick() {
+       constexpr double dt = 0.01666666666666666666666666666666;
        if (!paused) {
-               sim.Tick();
+               sim.Tick(dt);
        }
        remain -= FrameMS();
        thirds = (thirds + 1) % 3;
+
+       double cam_diff = cam_tgt_dist - cam_dist;
+       if (std::abs(cam_diff) > 0.001) {
+               cam_dist += cam_diff * 0.25;
+       } else {
+               cam_dist = cam_tgt_dist;
+       }
 }
 
 int MasterState::FrameMS() const noexcept {
@@ -69,7 +91,48 @@ void MasterState::OnKeyDown(const SDL_KeyboardEvent &e) {
        }
 }
 
+void MasterState::OnMouseDown(const SDL_MouseButtonEvent &e) {
+       if (e.button == SDL_BUTTON_RIGHT) {
+               SDL_SetRelativeMouseMode(SDL_TRUE);
+               cam_dragging = true;
+       }
+}
+
+void MasterState::OnMouseUp(const SDL_MouseButtonEvent &e) {
+       if (e.button == SDL_BUTTON_RIGHT) {
+               SDL_SetRelativeMouseMode(SDL_FALSE);
+               cam_dragging = false;
+       }
+}
+
+void MasterState::OnMouseMotion(const SDL_MouseMotionEvent &e) {
+       constexpr double pitch_scale = PI * 0.001;
+       constexpr double yaw_scale = PI * 0.002;
+       if (cam_dragging) {
+               cam_orient.x = glm::clamp(cam_orient.x + double(e.yrel) * pitch_scale, 0.0, PI * 0.499);
+               cam_orient.y = std::fmod(cam_orient.y + double(e.xrel) * yaw_scale, PI * 2.0);
+       }
+}
+
+void MasterState::OnMouseWheel(const SDL_MouseWheelEvent &e) {
+       constexpr double roll_scale = PI * 0.0625;
+       constexpr double zoom_scale = -1.0;
+       constexpr double zoom_base = 1.125;
+       cam_orient.z = glm::clamp(cam_orient.z + double(e.x) * roll_scale, PI * -0.5, PI * 0.5);
+       cam_tgt_dist = std::max(cp.GetCreature().Size() * 2.0, cam_tgt_dist * std::pow(zoom_base, double(e.y) * zoom_scale));
+}
+
 void MasterState::OnRender(graphics::Viewport &viewport) {
+       if (cp.Shown()) {
+               cam.Radial(cp.GetCreature(), cam_dist, cam_orient);
+               assets.shaders.planet_surface.Activate();
+               assets.shaders.planet_surface.SetV(cam.View());
+               assets.shaders.sun_surface.Activate();
+               assets.shaders.sun_surface.SetV(cam.View());
+               assets.shaders.creature_skin.Activate();
+               assets.shaders.creature_skin.SetV(cam.View());
+       }
+
        int num_lights = 0;
        for (auto sun : sim.Suns()) {
                // TODO: source sun's light color and strength
@@ -124,12 +187,16 @@ void MasterState::OnRender(graphics::Viewport &viewport) {
        assets.shaders.creature_skin.SetTexture(assets.textures.skins);
        // TODO: extend to nearby bodies as well
        for (auto c : cam.Reference().Creatures()) {
-               assets.shaders.creature_skin.SetM(cam.Model(c->GetBody()) * glm::mat4(c->LocalTransform()));
-               c->Draw(assets, viewport);
+               assets.shaders.creature_skin.SetM(cam.Model(cam.Reference()) * glm::mat4(c->LocalTransform()));
+               assets.shaders.creature_skin.SetBaseColor(glm::vec3(c->BaseColor()));
+               assets.shaders.creature_skin.SetHighlightColor(glm::vec4(c->HighlightColor()));
+               c->Draw(viewport);
        }
 
        viewport.ClearDepth();
-       cp.Draw(assets, viewport);
+       cp.Draw(viewport);
+       rp.Draw(viewport);
+       tp.Draw(viewport);
 }
 
 }