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#include "flatland.hpp"
#include <set>
#include <iostream>
#include <SDL2/SDL.h>
#include <ctime>
using namespace std;
using namespace flat;
#include "core/task.hpp"
#include "core/signal.hpp"
#include "object.hpp"
#include "window.hpp"
#include "exception.hpp"
#include "exceptions/forcequit.hpp"
/* Global fields definitions */
float flatland_dt;
FlatWindow * window = 0;
flat_status status;
float fps;
float fps_pause = 5;
core::job mainsync_job;
core::channel core_chan("core");
core::listener::ptr quit_listener;
core::listener::ptr print_listener;
/* channels listeners callback */
void quit_callback(const object *sender, core::signal::package)
{
cout << "Flatland: quit request attempted" << endl;
flat::quit();
}
void print_callback(const object *sender, core::signal::package p)
{
const char * out = p.get<const char>();
string * sout = p.get<string>();
if (!out)
cout << "Flatland: " << out << endl;
else if (!sout)
cout << "Flatland: " << sout << endl;
// else fail silently
}
/* Functions implementation */
uint32_t status_to_flags(const flat_status& s)
{
uint32_t flags = 0;
if (s.audio)
flags |= SDL_INIT_AUDIO;
if (s.timer)
flags |= SDL_INIT_TIMER;
if (s.video)
flags |= SDL_INIT_VIDEO;
if (s.joystick)
flags |= SDL_INIT_JOYSTICK;
if (s.haptic)
flags |= SDL_INIT_HAPTIC;
if (s.controller)
flags |= SDL_INIT_GAMECONTROLLER;
if (s.events)
flags |= SDL_INIT_EVENTS;
if (s.haptic)
flags |= SDL_INIT_HAPTIC;
if (s.controller)
flags |= SDL_INIT_GAMECONTROLLER;
if (s.events)
flags |= SDL_INIT_EVENTS;
return flags;
}
/* Accessors */
core::channel& flat::core_channel()
{
return core_chan;
}
core::job& flat::main_job()
{
return mainsync_job;
}
/* Main loop */
int flat::init_flatland(FlatWindow* w, const flat_status& s, float _fps)
{
cout << "Flatland: Initializing flatland" << endl;
// init core channel
cout << "Flatland: Initializing core channel" << endl;
// start core channel
// assure that NO OTHER core channel was present before initialization
if (!core_chan.start(core::priority_t::max, &mainsync_job)) {
cout << "Flatland: Could not map 'core' channel" << endl;
cout << "Flatland: Do not call another channel 'core' before flatland initialization" << endl;
cout << "Flatland: Aborting" << endl;
return -1;
}
// bind listeners
quit_listener = core_chan.connect(quit_callback, initializer_list<string>({string("quit")}));
// control if quit was not already connected
if (!quit_listener) {
cout << "Flatland: Could not connect 'quit' listener" << endl;
cout << "Flatland: Do not connect to core channel another listener with filter name 'quit' before flatland initialization" << endl;
cout << "Flatland: Aborting" << endl;
return -1;
}
print_listener = core_chan.connect(print_callback, initializer_list<string>({string("print")}));
// control if print was not already connected
if (!print_listener) {
cout << "Flatland: Could not connect 'print' listener" << endl;
cout << "Flatland: Do not connect to core channel another listener with filter name 'print' before flatland initialization" << endl;
cout << "Flatland: Aborting" << endl;
return -1;
}
// init variables
cout << "Flatland: Initializing window" << endl;
window = w;
status = s;
fps = _fps;
// init SDL
cout << "Flatland: Initializing SDL" << endl;
uint32_t flags = status_to_flags(s);
if ( SDL_Init(flags | SDL_INIT_NOPARACHUTE) < 0)
{
cout << "Error: SDL_Init failed" << endl;
return -1;
}
// init window
cout << "Flatland: Opening window" << endl;
window->open();
/* Game loop */
status.running = 1;
status.loop = 1;
clock_t delay = 0;
cout << "Flatland: Entering game-loop" << endl;
do
{
do {
flatland_dt = 1.0f / fps + delay / CLOCKS_PER_SEC;
delay = clock();
try {
/* Invoke main sync job tasks */
mainsync_job();
} catch (const ForceQuit& f) {
cerr << "Flatland: a force quit call was thrown" << endl;
cerr << "Possible reason: " << f.m_reason << endl;
quit();
}
SDL_Delay((uint32_t) (1000.0f / fps));
delay -= clock();
} while (status.loop);
SDL_Delay((uint32_t)(1000 / fps_pause));
}
while(status.running);
cout << "Flatland: closing window" << endl;
window->close();
cout << "Flatland: quitting SDL" << endl;
SDL_Quit();
return status.error;
}
void flat::quit()
{
status.running = 0;
status.loop = 0;
}
flat_status flat::flatland_status()
{
return status;
}
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