Show some performance stats.

1 files changed, 24 insertions, 0 deletions

diff --git a/src/game/interface.cpp b/src/game/interface.cpp
index 2a52220..148f790 100644
--- a/src/game/interface.cpp
+++ b/src/game/interface.cpp
@@ -1,4 +1,5 @@
 #include "game.hpp"
+#include <iomanip>
 
 namespace interface {
 
@@ -141,6 +142,8 @@ void state_t::render_to(render::state_t *render)
 {
 	size_t w = window->getSize().x, h = window->getSize().y;
 	v2f_t x;
+	std::stringstream ss;
+	double fps;
 
 	if (select.selecting)
 		render->render_hlrect(select.rect, sf::Color(200, 100, 50));
@@ -160,6 +163,27 @@ void state_t::render_to(render::state_t *render)
 		render->render_text(x, em, entry.text, render::ALIGN_LEFT_TOP, sf::Color::White);
 		x[1] += em;
 	}
+
+	x = v2f_t(0.0f, h - em * 1.5);
+	ss << "S/T/E: ";
+	ss << render->stats.sectors << "/";
+	ss << render->stats.tiles << "/";
+	ss << render->stats.entities;
+	render->render_text(x, em, ss.str(), render::ALIGN_LEFT_TOP, sf::Color::White);
+
+	perf_hist_index = (perf_hist_index + 1) % count(perf_hist);
+	perf_hist[perf_hist_index] = 1.0 / render->dt;
+
+	fps = 0.0;
+	for (size_t i = 0; i < count(perf_hist); i++)
+		fps += perf_hist[i];
+	fps /= count(perf_hist);
+
+	x[1] -= em;
+	ss.str(std::string());
+	ss << std::fixed << std::setprecision(1);
+	ss << "FPS: " << fps;
+	render->render_text(x, em, ss.str(), render::ALIGN_LEFT_TOP, sf::Color::White);
 }
 
 } // namespace interface