From ca8754a3a2296ff2842c781d1936dd47cecb3c9f Mon Sep 17 00:00:00 2001
From: pixel <pixel>
Date: Sun, 9 Mar 2003 21:19:43 +0000
Subject: FPS

---
 include/engine.h |  4 ++++
 lib/engine.cc    | 20 ++++++++++++++++++++
 src/test.cc      |  5 ++++-
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/include/engine.h b/include/engine.h
index 64e823d..f950314 100644
--- a/include/engine.h
+++ b/include/engine.h
@@ -21,6 +21,7 @@ namespace mogltk {
 	static int mouseX();
 	static int mouseY();
 	static int mousebuttons();
+	static double FPS();
       private:
         static bool inited;
 	static bool postsetuped;
@@ -30,6 +31,9 @@ namespace mogltk {
 	static int mx;
 	static int my;
 	static int mbuttons;
+	static int frames;
+	static double curfps;
+	static Uint32 curticks;
 	static void updatemouse();
     };
 };
diff --git a/lib/engine.cc b/lib/engine.cc
index ed52d8c..2d53beb 100644
--- a/lib/engine.cc
+++ b/lib/engine.cc
@@ -5,6 +5,11 @@
 bool mogltk::engine::inited = false, mogltk::engine::postsetuped = false;
 bool mogltk::engine::appactive = false, mogltk::engine::cursorvisible = false, mogltk::engine::quitrequest = false;
 int mogltk::engine::mx, mogltk::engine::my, mogltk::engine::mbuttons;
+int mogltk::engine::frames;
+double mogltk::engine::curfps = -1;
+Uint32 mogltk::engine::curticks;
+
+#define UPDATERATE 1000
 
 int mogltk::engine::setup() throw(GeneralException) {
     if (inited) {
@@ -28,6 +33,7 @@ int mogltk::engine::postsetup() throw(GeneralException) {
     }
     
     SDL_EnableUNICODE(1);
+    curticks = SDL_GetTicks();
     
     postsetuped = true;
 
@@ -110,6 +116,16 @@ void mogltk::engine::pollevents() {
     if (!postsetuped)
 	postsetup();
     
+    if (appactive) {
+	Uint32 ticks = SDL_GetTicks();
+	frames++;
+	if (ticks - curticks > UPDATERATE) {
+	    curfps = (double) frames * 1000 / (ticks - curticks);
+	    frames = 0;
+	    curticks = ticks;
+	}
+    }
+    
     while(true) {
 	if (hastoreturn)
 	    if (!SDL_PollEvent(NULL)) {
@@ -197,3 +213,7 @@ int mogltk::engine::mouseY() {
 int mogltk::engine::mousebuttons() {
     return mbuttons;
 }
+
+double mogltk::engine::FPS() {
+    return curfps;
+}
diff --git a/src/test.cc b/src/test.cc
index e56b6f4..64ed569 100644
--- a/src/test.cc
+++ b/src/test.cc
@@ -12,7 +12,6 @@
 
 CODE_BEGINS
 virtual int startup() throw (GeneralException) {
-    verbosity = M_INFO;
     mogltk::glbase::setup();
     new Archive("datas.paq");
     Input * fonte = new Input("font-2.bin");
@@ -24,6 +23,7 @@ virtual int startup() throw (GeneralException) {
     delete cursor;
     
     mogltk::engine::setcursorvisible(true);
+    mogltk::engine::setappactive(true);
     
     Input * pattern = new Input("pattern6.tex");
     mogltk::texture * mytex = new mogltk::texture(pattern, true);
@@ -82,6 +82,9 @@ virtual int startup() throw (GeneralException) {
 	    "It works!!\n"
 	    "I can't believe it!\n"
 	);
+	
+	font.putcursor(550, 450);
+	font.printf("FPS: %.2f", mogltk::engine::FPS());
 
 	s->draw(mogltk::engine::mouseX(), mogltk::engine::mouseY());
 
-- 
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