olá, gostaria de uma ajuda para saber como adicionar imagens que "fiquem descendo a tela" constantemente de tempo em tempo com o objetivo de criar obstáculos com elas.
#include <stdio.h>
#include <allegro5/allegro.h>
#include <allegro5/allegro_image.h>
#include <allegro5/allegro_acodec.h>
#include <allegro5/allegro_audio.h>
const float FPS = 60;
const int SCREEN_W = 640;
const int SCREEN_H = 480;
const int AVIAO_SIZE = 80;
enum MYKEYS {
KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, KEY_SPACE
};
int main(int argc, char **argv)
{
ALLEGRO_DISPLAY *display = NULL;
ALLEGRO_EVENT_QUEUE *event_queue = NULL;
ALLEGRO_TIMER *timer = NULL;
ALLEGRO_BITMAP *aviao_principal = NULL;
ALLEGRO_SAMPLE *sample=NULL;//Audio
float bouncer_x = SCREEN_W/2 - AVIAO_SIZE / 2.0;
float bouncer_y = SCREEN_H-90 - AVIAO_SIZE / 2.0;
bool key[4] = { false, false, false, false };
bool redraw = true;
bool doexit = false;
if(!al_init()) {
fprintf(stderr, "failed to initialize allegro!\n");
return -1;
}
if(!al_install_keyboard()) {
fprintf(stderr, "failed to initialize the keyboard!\n");
return -1;
}
timer = al_create_timer(1.0 / FPS);
if(!timer) {
fprintf(stderr, "failed to create timer!\n");
return -1;
}
if(!al_install_audio()){
fprintf(stderr, "failed to initialize audio!\n");
return -1;
}
if(!al_init_acodec_addon()){
fprintf(stderr, "failed to initialize audio codecs!\n");
return -1;
}
if (!al_reserve_samples(1)){
fprintf(stderr, "failed to reserve samples!\n");
return -1;
}
sample = al_load_sample("audio/somambiente.wav");
if (!sample)
{
fprintf(stderr, "Falha ao carregar sample.\n");
al_destroy_display(display);
return false;
}
display = al_create_display(SCREEN_W, SCREEN_H);
if(!display) {
fprintf(stderr, "failed to create display!\n");
al_destroy_timer(timer);
return -1;
}
al_init_image_addon();
aviao_principal = al_load_bitmap("imagens/aviaoprincipal.png");
if(!aviao_principal) {
fprintf(stderr, "failed to create avio_principal bitmap!\n");
al_destroy_display(display);
al_destroy_timer(timer);
return -1;
}
al_set_target_bitmap(aviao_principal);
// al_clear_to_color(al_map_rgb(255, 0, 255));
al_set_target_bitmap(al_get_backbuffer(display));
event_queue = al_create_event_queue();
if(!event_queue) {
fprintf(stderr, "failed to create event_queue!\n");
al_destroy_bitmap(aviao_principal);
al_destroy_display(display);
al_destroy_timer(timer);
return -1;
}
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_register_event_source(event_queue, al_get_keyboard_event_source());
al_clear_to_color(al_map_rgb(0,0,0));
al_flip_display();
al_start_timer(timer);
while(!doexit)
{
ALLEGRO_EVENT ev;
al_wait_for_event(event_queue, &ev);
al_play_sample(sample, 1.0, 0.0,1.0,ALLEGRO_PLAYMODE_LOOP,NULL);
if(ev.type == ALLEGRO_EVENT_TIMER) {
if(key[KEY_UP] && bouncer_y >= SCREEN_H/2) {
aviao_principal=al_load_bitmap("imagens/aviaoup.png");
bouncer_y -= 4.0;
}
if(key[KEY_DOWN] && bouncer_y <= SCREEN_H - AVIAO_SIZE - 50) {
aviao_principal=al_load_bitmap("imagens/aviaoprincipal.png");
bouncer_y += 4.0;
}
if(key[KEY_LEFT] && bouncer_x >= 7.0) {
aviao_principal=al_load_bitmap("imagens/aviaoleft.png");
bouncer_x -= 4.0;
}
if(key[KEY_RIGHT] && bouncer_x <= SCREEN_W - AVIAO_SIZE - 7) {
aviao_principal=al_load_bitmap("imagens/aviaoright.png");
bouncer_x += 4.0;
}
redraw = true;
}
else if(ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE) {
break;
}
else if(ev.type == ALLEGRO_EVENT_KEY_DOWN) {
switch(ev.keyboard.keycode) {
case ALLEGRO_KEY_UP:
key[KEY_UP] = true;
break;
case ALLEGRO_KEY_DOWN:
key[KEY_DOWN] = true;
break;
case ALLEGRO_KEY_LEFT:
key[KEY_LEFT] = true;
break;
case ALLEGRO_KEY_RIGHT:
key[KEY_RIGHT] = true;
break;
}
}
else if(ev.type == ALLEGRO_EVENT_KEY_UP) {
switch(ev.keyboard.keycode) {
case ALLEGRO_KEY_UP:
aviao_principal=al_load_bitmap("imagens/aviaoprincipal.png");
key[KEY_UP] = false;
break;
case ALLEGRO_KEY_DOWN:
aviao_principal=al_load_bitmap("imagens/aviaoprincipal.png");
key[KEY_DOWN] = false;
break;
case ALLEGRO_KEY_LEFT:
aviao_principal=al_load_bitmap("imagens/aviaoprincipal.png");
key[KEY_LEFT] = false;
break;
case ALLEGRO_KEY_RIGHT:
aviao_principal=al_load_bitmap("imagens/aviaoprincipal.png");
key[KEY_RIGHT] = false;
break;
case ALLEGRO_KEY_ESCAPE:
doexit = true;
break;
}
}
if(redraw && al_is_event_queue_empty(event_queue)) {
redraw = false;
al_clear_to_color(al_map_rgb(135,206,250));
al_draw_bitmap(aviao_principal, bouncer_x, bouncer_y, 0);
al_flip_display();
}
}
al_destroy_bitmap(aviao_principal);
al_destroy_timer(timer);
al_destroy_display(display);
al_destroy_event_queue(event_queue);
al_destroy_sample(sample);
return 0;
}
