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
|
#include "base/nebu_system.h"
#include "SDL.h"
#include <stdio.h>
Callbacks *current = 0;
static int return_code = -1;
static int redisplay = 0;
void SystemExit() {
fprintf(stderr, "[system] shutting down SDL now\n");
SDL_Quit();
fprintf(stderr, "[system] exiting application\n");
}
unsigned int SystemGetElapsedTime() {
/* fprintf(stderr, "%d\n", SDL_GetTicks()); */
return SDL_GetTicks();
}
int SystemMainLoop() {
SDL_Event event;
return_code = -1;
while(return_code == -1) {
while(SDL_PollEvent(&event) && current) {
switch(event.type) {
case SDL_KEYDOWN:
case SDL_KEYUP:
case SDL_JOYAXISMOTION:
case SDL_JOYBUTTONDOWN:
case SDL_JOYBUTTONUP:
case SDL_MOUSEBUTTONUP:
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEMOTION:
SystemHandleInput(&event);
break;
case SDL_QUIT:
SystemExit();
break;
default:
/* ignore event */
break;
}
}
if(redisplay) {
current->display();
redisplay = 0;
} else
current->idle();
}
if(current->exit)
(current->exit)();
return return_code;
}
void SystemRegisterCallbacks(Callbacks *cb) {
current = cb;
}
void SystemExitLoop(int value) {
return_code = value;
}
void SystemPostRedisplay() {
redisplay = 1;
}
|
