X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fyoink;a=blobdiff_plain;f=src%2FMoof%2FTimer.cc;h=d28d5e89fd9d8ef39b379459a0b3a51b6009de3f;hp=bc7aae220416687747de6f29bf07c39fc39a3f67;hb=33842c860fe18ca8cf087905992885687434320c;hpb=6dd7ae54e742339cc49e640d1076a310a0f4eedd

diff --git a/src/Moof/Timer.cc b/src/Moof/Timer.cc
index bc7aae2..d28d5e8 100644
--- a/src/Moof/Timer.cc
+++ b/src/Moof/Timer.cc
@@ -28,6 +28,7 @@
 
 #include <cerrno>
 #include <ctime>
+#include <limits>
 #include <stdexcept>
 
 #include "Log.hh"
@@ -43,6 +44,129 @@
 namespace Mf {
 
 
+Scalar Timer::nextFire_ = std::numeric_limits<Scalar>::max();
+std::map<unsigned,Timer&> Timer::timers_;
+
+
+unsigned Timer::getNewID()
+{
+	static unsigned id = 1;
+	return id++;
+}
+
+
+void Timer::init(const Function& function, Scalar seconds, Mode mode)
+{
+	invalidate();
+
+	mode_ = mode;
+
+	if (mode_ != INVALID)
+	{
+		function_ = function;
+
+		if (mode == ABSOLUTEE)
+		{
+			absolute_ = seconds;
+		}
+		else
+		{
+			absolute_ = seconds - getTicks();
+			interval_ = seconds;
+		}
+
+		id_ = getNewID();
+		timers_.insert(std::pair<unsigned,Timer&>(id_, *this));
+
+		if (absolute_ < nextFire_) nextFire_ = absolute_;
+	}
+}
+
+
+bool Timer::isValid() const
+{
+	return mode_ != INVALID;
+}
+
+void Timer::invalidate()
+{
+	if (mode_ != INVALID)
+	{
+		timers_.erase(id_);
+		mode_ = INVALID;
+
+		if (isEqual(absolute_, nextFire_)) nextFire_ = findNextFire();
+	}
+}
+
+
+void Timer::fire()
+{
+	Scalar t = getTicks();
+
+	if (function_) function_(*this, t);
+
+	if (isRepeating())
+	{
+		Scalar absolute = absolute_;
+
+		if (isEqual(absolute_, t, 1.0)) absolute_ += interval_;
+		else absolute_ = interval_ + t;
+
+		if (isEqual(absolute, nextFire_)) nextFire_ = findNextFire();
+	}
+	else
+	{
+		invalidate();
+	}
+}
+
+
+Scalar Timer::findNextFire()
+{
+	std::map<unsigned,Timer&>::iterator it;
+	Scalar nextFire = std::numeric_limits<Scalar>::max();
+
+	for (it = timers_.begin(); it != timers_.end(); ++it)
+	{
+		Scalar absolute = (*it).second.absolute_;
+		if (absolute < nextFire) nextFire = absolute;
+	}
+
+	return nextFire;
+}
+
+
+Scalar Timer::getSecondsRemaining() const
+{
+	return absolute_ - getTicks();
+}
+
+bool Timer::isExpired() const
+{
+	return getSecondsRemaining() < 0.0;
+}
+
+bool Timer::isRepeating() const
+{
+	return mode_ == REPEAT;
+}
+
+
+void Timer::fireIfExpired(Scalar t)
+{
+	std::map<unsigned,Timer&>::iterator it;
+
+	if (nextFire_ > t) return;
+
+	for (it = timers_.begin(); it != timers_.end(); ++it)
+	{
+		Timer& timer = (*it).second;
+		if (timer.isExpired()) timer.fire();
+	}
+}
+
+
 #if HAVE_CLOCK_GETTIME
 
 // Since the monotonic clock will provide us with the timer since the computer
@@ -67,7 +191,7 @@ static time_t setReference_()
 static const time_t reference = setReference_();
 
 
-Scalar getTicks()
+Scalar Timer::getTicks()
 {
 	struct timespec ts;
 
@@ -79,7 +203,7 @@ Scalar getTicks()
 	return Scalar(ts.tv_sec - reference) + Scalar(ts.tv_nsec) / 1000000000.0;
 }
 
-void sleep(Scalar seconds, bool absolute)
+void Timer::sleep(Scalar seconds, bool absolute)
 {
 	struct timespec ts;
 	int ret;
@@ -103,13 +227,13 @@ void sleep(Scalar seconds, bool absolute)
 // SDL only promises centisecond accuracy, but that's better than a kick in the
 // butt.
 
-Scalar getTicks()
+Scalar Timer::getTicks()
 {
 	Uint32 ms = SDL_GetTicks();
 	return Scalar(ms / 1000) + Scalar(ms % 1000) / 1000.0;
 }
 
-void sleep(Scalar seconds, bool absolute)
+void Timer::sleep(Scalar seconds, bool absolute)
 {
 	if (absolute) seconds -= getTicks();
 	SDL_Delay(Uint32(cml::clamp(int(seconds * 1000.0), 0, 1000)));