1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* Copyright (c) 2024 Richard Braun.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE
* FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include "eetg.h"
#include "ei.h"
static struct termios orig_ios;
static struct ei_game game;
static void
restore_termios(void)
{
tcsetattr(STDIN_FILENO, TCSANOW, &orig_ios);
write(STDOUT_FILENO, "\ec", 2);
}
static void
setup_io(void)
{
struct termios ios;
setvbuf(stdin, NULL, _IONBF, 0);
fcntl(STDIN_FILENO, F_SETFL, fcntl(STDIN_FILENO, F_GETFL) | O_NONBLOCK);
tcgetattr(STDIN_FILENO, &orig_ios);
atexit(restore_termios);
ios = orig_ios;
ios.c_lflag &= ~(ICANON | ECHO);
ios.c_cc[VMIN] = 1;
ios.c_cc[VTIME] = 0;
tcsetattr(STDIN_FILENO, TCSANOW, &ios);
}
static void
write_terminal(const void *buffer, size_t size, void *arg)
{
(void)arg;
write(STDOUT_FILENO, buffer, size);
}
int
main(void)
{
bool leave;
setup_io();
eetg_init_rand(time(NULL));
ei_game_init(&game, write_terminal, NULL);
do {
ssize_t nr_bytes;
int8_t c;
usleep(1000000 / EI_FPS);
nr_bytes = read(STDIN_FILENO, &c, 1);
if (nr_bytes == -1) {
if (errno == EAGAIN) {
c = -1;
} else {
break;
}
}
leave = ei_game_process(&game, c);
} while (!leave);
return EXIT_SUCCESS;
}
|
