Created an event manager.
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@ -42,8 +42,9 @@ include_directories(
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SYSTEM ${ALLEG5_INCLUDE_DIRS})
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set(SRCS
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src/main.c
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src/display.c)
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src/display.c
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src/event_manager.c
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src/main.c)
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add_definitions(-DVERSION="${TARGET_VERSION}")
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@ -18,18 +18,26 @@
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#include "display.h"
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#include <stdio.h>
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#ifdef DEBUG
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# include <stdio.h>
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#endif
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#include <allegro5/allegro.h>
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static ALLEGRO_DISPLAY *display;
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ALLEGRO_DISPLAY *display;
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int create_display(unsigned int width, unsigned int height) {
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display = al_create_display(width, height);
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if(!display)
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return 0;
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#ifdef DEBUG
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puts("Initialized display.");
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#endif
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return 1;
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}
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void destroy_display() {
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al_destroy_display(display);
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#ifdef DEBUG
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puts("Destroyed display.");
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#endif
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}
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71
src/event_manager.c
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71
src/event_manager.c
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@ -0,0 +1,71 @@
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/*
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* Copyright (C) 2018 Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
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* Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "event_manager.h"
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#include "globals.h"
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#ifdef DEBUG
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# include <stdio.h>
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#endif
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#include <allegro5/allegro.h>
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static ALLEGRO_EVENT_QUEUE *event_queue;
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static ALLEGRO_TIMER *timer;
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int evnt_mngr_init() {
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timer = al_create_timer(1.0f / FPS);
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if(!timer)
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return 0;
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#ifdef DEBUG
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puts("Initialized timer.");
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#endif
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event_queue = al_create_event_queue();
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if(!event_queue)
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return 0;
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#ifdef DEBUG
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puts("Initialized event queue.");
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#endif
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al_register_event_source(event_queue,
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al_get_display_event_source(display));
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al_register_event_source(event_queue,
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al_get_timer_event_source(timer));
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al_start_timer(timer);
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return 1;
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}
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void evnt_mngr_deinit() {
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al_destroy_timer(timer);
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#ifdef DEBUG
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puts("Destroyed timer.");
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#endif
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al_destroy_event_queue(event_queue);
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#ifdef DEBUG
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puts("Destroyed event queue.");
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#endif
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}
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void handle_event() {
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ALLEGRO_EVENT evnt;
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al_wait_for_event(event_queue, &evnt);
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if(evnt.type == ALLEGRO_EVENT_TIMER)
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redraw = 1;
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else if(evnt.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
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run = 0;
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}
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src/event_manager.h
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37
src/event_manager.h
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@ -0,0 +1,37 @@
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/*
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* Copyright (C) 2018 Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
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* Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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/**
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* @brief Initialize the event handler.
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*
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* @return 0 upon failure, 1 upon success.
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*/
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int evnt_mngr_init();
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/**
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* @brief Deinitialize the event handler.
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*/
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void evnt_mngr_deinit();
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/**
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* @brief Handle the next event in the queue (wait if the
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* queue is empty).
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*/
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void handle_event();
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@ -23,7 +23,12 @@
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#endif
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#ifndef FPS
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# define FPS 60
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# define FPS 60.0f
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#endif
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#include <allegro5/allegro.h>
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extern ALLEGRO_DISPLAY *display; ///< The allegro display.
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extern int redraw; ///< Whether or not to redraw the screen.
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extern int run; ///< Whether or not to continue running the simulation.
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src/main.c
34
src/main.c
@ -18,8 +18,10 @@
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#include "globals.h"
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#include "display.h"
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#include "event_manager.h"
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int run;
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int redraw;
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#include <stdio.h>
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#include<allegro5/allegro.h>
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@ -38,18 +40,32 @@ int main() {
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return 1;
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}
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// begin running the simulation
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run = 1;
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while(run)
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if(!evnt_mngr_init())
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{
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// TODO: handle events
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// TODO: run simulation physics
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al_clear_to_color(al_map_rgb(0, 0, 0));
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// TODO: run simulation draw functions
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al_flip_display();
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fprintf(stderr, "alleg5: failed to initialize event queue.\n");
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destroy_display();
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return 1;
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}
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// begin running the simulation
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run = 1;
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redraw = 1;
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while(run)
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{
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handle_event();
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// TODO: run simulation physics
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// only redraw if the timer event has occurred
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if(redraw)
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{
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al_clear_to_color(al_map_rgb(0, 0, 0));
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// TODO: run simulation draw functions
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al_flip_display();
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redraw = 0;
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}
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}
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evnt_mngr_deinit();
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destroy_display();
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return 0;
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