Created an event manager.

This commit is contained in:
Nicolás Ortega Froysa 2018-03-25 14:53:40 +02:00
parent b99e33fe52
commit d57da20ec7
No known key found for this signature in database
GPG Key ID: FEC70E3BAE2E69BF
6 changed files with 152 additions and 14 deletions

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@ -42,8 +42,9 @@ include_directories(
SYSTEM ${ALLEG5_INCLUDE_DIRS})
set(SRCS
src/main.c
src/display.c)
src/display.c
src/event_manager.c
src/main.c)
add_definitions(-DVERSION="${TARGET_VERSION}")

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@ -18,18 +18,26 @@
#include "display.h"
#include <stdio.h>
#ifdef DEBUG
# include <stdio.h>
#endif
#include <allegro5/allegro.h>
static ALLEGRO_DISPLAY *display;
ALLEGRO_DISPLAY *display;
int create_display(unsigned int width, unsigned int height) {
display = al_create_display(width, height);
if(!display)
return 0;
#ifdef DEBUG
puts("Initialized display.");
#endif
return 1;
}
void destroy_display() {
al_destroy_display(display);
#ifdef DEBUG
puts("Destroyed display.");
#endif
}

71
src/event_manager.c Normal file
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@ -0,0 +1,71 @@
/*
* Copyright (C) 2018 Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
* Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "event_manager.h"
#include "globals.h"
#ifdef DEBUG
# include <stdio.h>
#endif
#include <allegro5/allegro.h>
static ALLEGRO_EVENT_QUEUE *event_queue;
static ALLEGRO_TIMER *timer;
int evnt_mngr_init() {
timer = al_create_timer(1.0f / FPS);
if(!timer)
return 0;
#ifdef DEBUG
puts("Initialized timer.");
#endif
event_queue = al_create_event_queue();
if(!event_queue)
return 0;
#ifdef DEBUG
puts("Initialized event queue.");
#endif
al_register_event_source(event_queue,
al_get_display_event_source(display));
al_register_event_source(event_queue,
al_get_timer_event_source(timer));
al_start_timer(timer);
return 1;
}
void evnt_mngr_deinit() {
al_destroy_timer(timer);
#ifdef DEBUG
puts("Destroyed timer.");
#endif
al_destroy_event_queue(event_queue);
#ifdef DEBUG
puts("Destroyed event queue.");
#endif
}
void handle_event() {
ALLEGRO_EVENT evnt;
al_wait_for_event(event_queue, &evnt);
if(evnt.type == ALLEGRO_EVENT_TIMER)
redraw = 1;
else if(evnt.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
run = 0;
}

37
src/event_manager.h Normal file
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@ -0,0 +1,37 @@
/*
* Copyright (C) 2018 Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
* Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
/**
* @brief Initialize the event handler.
*
* @return 0 upon failure, 1 upon success.
*/
int evnt_mngr_init();
/**
* @brief Deinitialize the event handler.
*/
void evnt_mngr_deinit();
/**
* @brief Handle the next event in the queue (wait if the
* queue is empty).
*/
void handle_event();

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@ -23,7 +23,12 @@
#endif
#ifndef FPS
# define FPS 60
# define FPS 60.0f
#endif
#include <allegro5/allegro.h>
extern ALLEGRO_DISPLAY *display; ///< The allegro display.
extern int redraw; ///< Whether or not to redraw the screen.
extern int run; ///< Whether or not to continue running the simulation.

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@ -18,8 +18,10 @@
#include "globals.h"
#include "display.h"
#include "event_manager.h"
int run;
int redraw;
#include <stdio.h>
#include<allegro5/allegro.h>
@ -38,18 +40,32 @@ int main() {
return 1;
}
// begin running the simulation
run = 1;
while(run)
if(!evnt_mngr_init())
{
// TODO: handle events
// TODO: run simulation physics
al_clear_to_color(al_map_rgb(0, 0, 0));
// TODO: run simulation draw functions
al_flip_display();
fprintf(stderr, "alleg5: failed to initialize event queue.\n");
destroy_display();
return 1;
}
// begin running the simulation
run = 1;
redraw = 1;
while(run)
{
handle_event();
// TODO: run simulation physics
// only redraw if the timer event has occurred
if(redraw)
{
al_clear_to_color(al_map_rgb(0, 0, 0));
// TODO: run simulation draw functions
al_flip_display();
redraw = 0;
}
}
evnt_mngr_deinit();
destroy_display();
return 0;