I am trying to write a game and having an odd problem. I followed the tutorials up to the events and added my own code. Here it is:
1#include "allegro5/allegro.h"
2#include "allegro5/allegro_image.h"
3#include "allegro5/allegro_primitives.h"
4#include <stdio.h>
5#include <allegro5/allegro_font.h>
6#include <allegro5/allegro_ttf.h>
7#define white al_map_rgb(255,255,255)
8#define black al_map_rgb(0,0,0)
9#define line_size 2
10
11void print_board(char board, float height, float width, float gr_width, ALLEGRO_FONT * script);
12
13int main(int argc, char **argv){
14
15 ALLEGRO_DISPLAY *display = NULL;
16 ALLEGRO_EVENT_QUEUE *event_queue = NULL;
17 float display_height = 640;
18 float display_width = 480;
19
20 if(!al_init()) {
21 fprintf(stderr, "failed to initialize allegro!\n");
22 return -1;
23 }
24
25 display = al_create_display(display_height, display_width);
26 if(!display) {
27 fprintf(stderr, "failed to create display!\n");
28 return -1;
29 }
30
31 event_queue = al_create_event_queue();
32 if(!event_queue) {
33 fprintf(stderr, "failed to create event_queue!\n");
34 al_destroy_display(display);
35 return -1;
36 }
37
38 al_init_image_addon();
39 al_init_primitives_addon();
40 al_init_font_addon(); // initialize the font addon
41 al_init_ttf_addon();// initialize the ttf (True Type Font) addon
42
43 ALLEGRO_FONT *font = al_create_builtin_font();
44
45 if (!font){
46 fprintf(stderr, "Could not create font.\n");
47 return -1;
48 }
49
50 float grid_height = display_height - 21;
51 float row_height = grid_height / 24;
52 float grid_width = display_width - 10;
53 float column_width = grid_width / 11;
54
55 al_flip_display();
56
57 al_register_event_source(event_queue, al_get_display_event_source(display));
58
59 al_clear_to_color(black);
60
61 al_flip_display();
62
63 while(1)
64 {
65 ALLEGRO_EVENT ev;
66 ALLEGRO_TIMEOUT timeout;
67 al_init_timeout(&timeout, 0.06);
68
69 bool get_event = al_wait_for_event_until(event_queue, &ev, &timeout);
70
71 if(get_event && ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE) {
72 break;
73 }
74
75 al_clear_to_color(black);
76 print_board('p', row_height, column_width, grid_width, font);
77 print_board('s', row_height, column_width, grid_width, font);
78 al_draw_line(0,0,display_width,0, white, line_size);
79 al_draw_line(0, 0, 0, display_height, white, line_size);
80 al_flip_display();
81 }
82 al_destroy_display(display);
83 al_destroy_event_queue(event_queue);
84
85 return 0;
86}
87
88void print_board(char board, float height, float width, float gr_width, ALLEGRO_FONT * script){
89
90 float x_position = 0;
91 float y_position;
92 if(board == 'p')
93 y_position = 0;
94 else
95 y_position = 12 * height;
96 float temp;
97 for(int count = 0; count <= 11; count++){
98 al_draw_line(x_position, y_position, gr_width, y_position, white, line_size);
99 y_position = y_position + height;}
100
101 temp = y_position - height;
102
103 if(board == 'p')
104 y_position = 0;
105 else
106 y_position = 12 * height;
107 for(int count = 0; count <= 11; count++){
108 al_draw_line(x_position, y_position, x_position, temp, white, line_size);
109 x_position = x_position + width;}
110
111 if(board == 'p')
112 y_position = height / 2;
113 else
114 y_position = 12 * height + (height / 2);
115 x_position = width / 2 + width;
116 for(char letter = 'A'; letter <'K'; letter++){
117 al_draw_textf(script, white, x_position, y_position, ALLEGRO_ALIGN_CENTRE, "%c", letter);
118 x_position = x_position + width;}
119
120 x_position = width / 2;
121 if(board == 'p')
122 y_position = 0;
123 else
124 y_position = 12 * height;
125 y_position = y_position + height + (height / 2);
126
127 for(int count = 1; count < 11; count++){
128 al_draw_textf(script, white, x_position, y_position, ALLEGRO_ALIGN_CENTRE, "%i", count);
129 y_position = y_position + height;}
130
131
132return;
133}
When I run the program, the grids go roughly 3/4 across the screen and the second is only drawn half. Here is a screen shot.
{"name":"611964","src":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/8\/a\/8ace26d230bf6346e28449d0e01f768c.png","w":1366,"h":768,"tn":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/8\/a\/8ace26d230bf6346e28449d0e01f768c"}
I did try it in full screen and it worked perfectly. I also tried a simple line drawing program, one across the top of the screen and one down the left side. The side line appeared to be correct but the top one was short. Did I get ahead of myself or is something wrong with my program?
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