160 lines
3.7 KiB
C++
160 lines
3.7 KiB
C++
#include <SDL.h>
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#include "timer.h"
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#include <iostream>
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Timer::TimeEvent::TimeEvent(const uint32_t & b, const uint32_t e, CallbackType & c) :
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begin(b), end(e), callback(c) {}
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Timer::TimeEvent::TimeEvent(const uint32_t & b, CallbackType & c) :
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begin(b), end(b), callback(c) {}
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Timer::TimeEvent::TimeEvent(const TimeEvent & o) :
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begin(o.begin), end(o.end), callback(o.callback) {}
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Timer::Timer() {
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sdlTicks = SDL_GetTicks();
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simTicks = 0;
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delta = 0;
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simIsRunning = false;
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}
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Timer::~Timer() {
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clearAllEvents();
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}
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void Timer::update() {
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uint32_t nowTicks = SDL_GetTicks();
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delta = nowTicks - sdlTicks;
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sdlTicks = nowTicks;
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if (simIsRunning)
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simTicks += delta;
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if (realTimeEvents.size() > 0)
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checkRTEvents();
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if (simIsRunning && simTimeEvents.size() > 0)
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checkSimEvents();
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}
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void Timer::checkRTEvents() {
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RealTimeMap::iterator i = realTimeEvents.begin();
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while (i != realTimeEvents.end() && i->first <= sdlTicks) {
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TimeEvent & te = i->second;
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float as_float = 0.0f;
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bool doRemove = false;
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if (te.begin == te.end) {
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doRemove = true;
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}
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else {
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if (sdlTicks > te.end) {
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as_float = 1.0f;
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doRemove = true;
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}
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else
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as_float = float(sdlTicks - te.begin) / float(te.end - te.begin);
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}
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te.callback(as_float);
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if (doRemove) {
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RealTimeMap::iterator j = i++;
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realTimeEvents.erase(j);
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}
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else
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++i;
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}
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}
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void Timer::checkSimEvents() {
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SimTimeMap::iterator i = simTimeEvents.begin();
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while (i != simTimeEvents.end() && i->first <= simTicks) {
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std::cout << "event start: " << i->first << " now " << simTicks << std::endl;
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TimeEvent & te = i->second;
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float as_float = 0.0f;
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bool doRemove = false;
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if (te.begin == te.end) {
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doRemove = true;
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}
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else {
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if (simTicks > te.end) {
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as_float = 1.0f;
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doRemove = true;
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}
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else
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as_float = float(simTicks - te.begin) / float(te.end - te.begin);
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}
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te.callback(as_float);
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if (doRemove) {
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SimTimeMap::iterator j = i++;
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simTimeEvents.erase(j);
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}
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else
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++i;
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}
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}
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void Timer::registerCallback(bool simTime, CallbackType & c, const uint32_t & b, const uint32_t & e) {
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if (simTime)
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simTimeEvents.insert(std::make_pair<uint32_t, TimeEvent>(b, TimeEvent(b, e, c)));
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else
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realTimeEvents.insert(std::make_pair<uint32_t, TimeEvent>(b, TimeEvent(b, e, c)));
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}
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void Timer::registerCallback(bool simTime, CallbackType & c, const uint32_t & b) {
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if (simTime)
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simTimeEvents.insert(std::make_pair<uint32_t, TimeEvent>(b, TimeEvent(b, c)));
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else
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realTimeEvents.insert(std::make_pair<uint32_t, TimeEvent>(b, TimeEvent(b, c)));
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}
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void Timer::clearAllEvents() {
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realTimeEvents.clear();
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simTimeEvents.clear();
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}
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#if 0
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void test1(float a) {
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std::cout << "test1: " << a << std::endl;
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}
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int main() {
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SDL_Init(SDL_INIT_TIMER);
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SDL_Delay(10);
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Timer * t = new Timer;
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t->setSimulationRunning(true);
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Timer::CallbackType cb(test1);
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uint32_t target = t->getTime() + 100;
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uint32_t finish = target + 100;
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t->registerCallback(true, cb, target, finish);
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while (t->getRealTime() < target + 1000) {
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t->update();
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SDL_Delay(10);
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}
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/*
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Timer * t = new Timer;
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if (t->getRealTime() < 8 || t->getRealTime() > 12)
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std::cout << "expected 10 got " << t->getRealTime() << std::endl;
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else
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std::cout << "got ~10: " << t->getRealTime() << std::endl;
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Timer::CallbackType cb(test1);
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uint32_t target = t->getRealTime() + 100;
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uint32_t finish = target + 100;
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t->registerCallback(cb, target, finish);
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uint32_t slept = 0;
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while (t->getRealTime() < target + 200) {
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t->update();
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std::cout << "now: " << t->getRealTime() << std::endl;
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SDL_Delay(10);
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}
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*/
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delete t;
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}
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#endif
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