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| al_draw_filled_rect not drawing |
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Magemaster
Member #10,856
April 2009
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Line 125 below is causing me some issues. The rectangle is not being drawn and I'm not sure why. No errors are thrown. Any help would be appreciated. 1
2#include <allegro5/allegro.h>
3#include <stdio.h>
4
5#define WIDTH 640
6#define HEIGHT 480
7#define SIZE 10.0
8
9//Environmental Globals
10ALLEGRO_DISPLAY *display = NULL;
11ALLEGRO_EVENT_QUEUE *events = NULL;
12ALLEGRO_TIMER *timer;
13
14//Graphics Globals
15ALLEGRO_COLOR red; // = al_map_rgb(184,22,22);
16ALLEGRO_COLOR blue; // = al_map_rgb(22,22,184);
17ALLEGRO_COLOR green; // = al_map_rgb(22,184,22);
18
19void init_allegro()
20{
21 //Colors
22 red=al_map_rgb(184,22,22);
23 blue=al_map_rgb(22,22,184);
24 green=al_map_rgb(22,184,22);
25
26 //Initialization
27 if(!al_init())
28 {
29 fprintf(stderr,"Failed to init Allegro!\n");
30 exit(0);
31 }
32
33 //Keyboard
34 if(!al_install_keyboard())
35 {
36 fprintf(stderr,"Could not connect keyboard!\n");
37 exit(0);
38 }
39
40 //create the display
41 display = al_create_display(WIDTH,HEIGHT);
42 if(!display)
43 {
44 fprintf(stderr,"Could not create display!\n");
45 exit(0);
46 }
47
48 //initialize the event queue
49 events=al_create_event_queue();
50 if(!events)
51 {
52 fprintf(stderr,"Could not create events\n");
53 exit(0);
54 }
55
56 //Set the timer
57 timer = al_create_timer(1.0/60);
58 if(!timer)
59 {
60 fprintf(stderr,"Could not create timer\n");
61 exit(0);
62 }
63
64 //Initialize the primitives addon
65 if(!al_init_primitives_addon())
66 {
67 fprintf(stderr,"Primitives failed to load\n");
68 }
69
70 //Register display, timer, keyboard to events
71 al_register_event_source(events,al_get_display_event_source(display));
72 al_register_event_source(events,al_get_keyboard_event_source());
73 al_register_event_source(events,al_get_timer_event_source(timer));
74
75 //Initially Clear the Display
76 al_clear_to_color(al_map_rgb(0,0,0));
77 al_flip_display();
78
79
80 //Start the timer
81 al_start_timer(timer);
82}
83
84void exit_allegro()
85{
86 al_destroy_display(display);
87 al_destroy_event_queue(events);
88 al_destroy_timer(timer);
89 al_shutdown_primitives_addon();
90}
91
92void main()
93{
94 //The event holder
95 ALLEGRO_EVENT event;
96 //The done
97 int done=0;
98 int redraw=1;
99
100 //init allegro
101 init_allegro();
102
103 //The While Loop
104 while(!done)
105 {
106 al_wait_for_event(events,&event);
107
108 //Fires 60 times a second
109 if(event.type == ALLEGRO_EVENT_TIMER)
110 {
111 redraw=1;
112 }
113 else if(event.type == ALLEGRO_EVENT_KEY_DOWN)
114 {
115 if(event.keyboard.keycode == ALLEGRO_KEY_ESCAPE)
116 {
117 done = 1;
118 }
119 }
120 //Start drawing
121 if(redraw && al_is_event_queue_empty(events))
122 {
123 redraw=0;
124 al_clear_to_color(al_map_rgb(60,100,10));
125 al_draw_filled_rectangle(10.0,20.0,30.0,60.0,red);
126 //printf("Rect Drawn!\n");
127 al_flip_display();
128 }
129 }
130 //Shutdown
131 exit_allegro();
132}
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Elias
Member #358
May 2000
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al_map_rgb (or any other Allegro functions) cannot work before al_init was called. -- |
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Magemaster
Member #10,856
April 2009
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Ah, thanks Elias. I also wasn't including allegro5/allegro_primitives.h |
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