This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
testgamecontroller.c
273 lines (238 loc) · 8.24 KB
/
testgamecontroller.c
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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
/*
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
/* Simple program to test the SDL game controller routines */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL.h"
#ifndef SDL_JOYSTICK_DISABLED
#ifdef __IPHONEOS__
#define SCREEN_WIDTH 320
#define SCREEN_HEIGHT 480
#else
#define SCREEN_WIDTH 640
#define SCREEN_HEIGHT 480
#endif
#define MAX_NUM_AXES 6
#define MAX_NUM_HATS 2
static SDL_bool s_ForceQuit = SDL_FALSE;
static void
DrawRect(SDL_Renderer *r, const int x, const int y, const int w, const int h)
{
const SDL_Rect area = { x, y, w, h };
SDL_RenderFillRect(r, &area);
}
static const char *
ControllerAxisName(const SDL_GameControllerAxis axis)
{
switch (axis)
{
#define AXIS_CASE(ax) case SDL_CONTROLLER_AXIS_##ax: return #ax
AXIS_CASE(INVALID);
AXIS_CASE(LEFTX);
AXIS_CASE(LEFTY);
AXIS_CASE(RIGHTX);
AXIS_CASE(RIGHTY);
AXIS_CASE(TRIGGERLEFT);
AXIS_CASE(TRIGGERRIGHT);
#undef AXIS_CASE
default: return "???";
}
}
static const char *
ControllerButtonName(const SDL_GameControllerButton button)
{
switch (button)
{
#define BUTTON_CASE(btn) case SDL_CONTROLLER_BUTTON_##btn: return #btn
BUTTON_CASE(INVALID);
BUTTON_CASE(A);
BUTTON_CASE(B);
BUTTON_CASE(X);
BUTTON_CASE(Y);
BUTTON_CASE(BACK);
BUTTON_CASE(GUIDE);
BUTTON_CASE(START);
BUTTON_CASE(LEFTSTICK);
BUTTON_CASE(RIGHTSTICK);
BUTTON_CASE(LEFTSHOULDER);
BUTTON_CASE(RIGHTSHOULDER);
BUTTON_CASE(DPAD_UP);
BUTTON_CASE(DPAD_DOWN);
BUTTON_CASE(DPAD_LEFT);
BUTTON_CASE(DPAD_RIGHT);
#undef BUTTON_CASE
default: return "???";
}
}
void
WatchGameController(SDL_GameController * gamecontroller)
{
const char *name = SDL_GameControllerName(gamecontroller);
const char *basetitle = "Game Controller Test: ";
const size_t titlelen = SDL_strlen(basetitle) + SDL_strlen(name) + 1;
char *title = SDL_malloc(titlelen);
SDL_Window *window = NULL;
SDL_Renderer *screen = NULL;
int done = 0;
SDL_Event event;
int i;
if (title) {
SDL_snprintf(title, titlelen, "%s%s", basetitle, name);
}
/* Create a window to display controller axis position */
window = SDL_CreateWindow(title, SDL_WINDOWPOS_CENTERED,
SDL_WINDOWPOS_CENTERED, SCREEN_WIDTH,
SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
if (window == NULL) {
fprintf(stderr, "Couldn't create window: %s\n", SDL_GetError());
return;
}
screen = SDL_CreateRenderer(window, -1, 0);
if (screen == NULL) {
fprintf(stderr, "Couldn't create renderer: %s\n", SDL_GetError());
SDL_DestroyWindow(window);
return;
}
SDL_SetRenderDrawColor(screen, 0x00, 0x00, 0x00, SDL_ALPHA_OPAQUE);
SDL_RenderClear(screen);
SDL_RenderPresent(screen);
SDL_RaiseWindow(window);
/* Print info about the controller we are watching */
printf("Watching controller %s\n", name ? name : "Unknown Controller");
/* Loop, getting controller events! */
while (!done) {
/* blank screen, set up for drawing this frame. */
SDL_SetRenderDrawColor(screen, 0x00, 0x00, 0x00, SDL_ALPHA_OPAQUE);
SDL_RenderClear(screen);
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_CONTROLLERAXISMOTION:
printf("Controller %d axis %d ('%s') value: %d\n",
event.caxis.which,
event.caxis.axis,
ControllerAxisName(event.caxis.axis),
event.caxis.value);
break;
case SDL_CONTROLLERBUTTONDOWN:
printf("Controller %d button %d ('%s') down\n",
event.cbutton.which, event.cbutton.button,
ControllerButtonName(event.cbutton.button));
break;
case SDL_CONTROLLERBUTTONUP:
printf("Controller %d button %d ('%s') up\n",
event.cbutton.which, event.cbutton.button,
ControllerButtonName(event.cbutton.button));
break;
case SDL_KEYDOWN:
if (event.key.keysym.sym != SDLK_ESCAPE) {
break;
}
/* Fall through to signal quit */
case SDL_QUIT:
done = 1;
s_ForceQuit = SDL_TRUE;
break;
default:
break;
}
}
/* Update visual controller state */
SDL_SetRenderDrawColor(screen, 0x00, 0xFF, 0x00, SDL_ALPHA_OPAQUE);
for (i = 0; i <SDL_CONTROLLER_BUTTON_MAX; ++i) {
if (SDL_GameControllerGetButton(gamecontroller, i) == SDL_PRESSED) {
DrawRect(screen, i * 34, SCREEN_HEIGHT - 34, 32, 32);
}
}
SDL_SetRenderDrawColor(screen, 0xFF, 0x00, 0x00, SDL_ALPHA_OPAQUE);
for (i = 0; i < SDL_CONTROLLER_AXIS_MAX / 2; ++i) {
/* Draw the X/Y axis */
int x, y;
x = (((int) SDL_GameControllerGetAxis(gamecontroller, i * 2 + 0)) + 32768);
x *= SCREEN_WIDTH;
x /= 65535;
if (x < 0) {
x = 0;
} else if (x > (SCREEN_WIDTH - 16)) {
x = SCREEN_WIDTH - 16;
}
y = (((int) SDL_GameControllerGetAxis(gamecontroller, i * 2 + 1)) + 32768);
y *= SCREEN_HEIGHT;
y /= 65535;
if (y < 0) {
y = 0;
} else if (y > (SCREEN_HEIGHT - 16)) {
y = SCREEN_HEIGHT - 16;
}
DrawRect(screen, x, y, 16, 16);
}
SDL_SetRenderDrawColor(screen, 0x00, 0x00, 0xFF, SDL_ALPHA_OPAQUE);
SDL_RenderPresent(screen);
if ( !done )
done = SDL_GameControllerGetAttached( gamecontroller ) == 0;
}
SDL_DestroyRenderer(screen);
SDL_DestroyWindow(window);
}
int
main(int argc, char *argv[])
{
const char *name;
int i;
int nController = 0;
SDL_GameController *gamecontroller;
SDL_SetHint( SDL_HINT_GAMECONTROLLERCONFIG, "341a3608000000000000504944564944,Aferglow PS3 Controller,a:b1,b:b2,y:b3,x:b0,start:b9,guide:b12,back:b8,dpup:h0.1,dpleft:h0.8,dpdown:h0.4,dpright:h0.2,leftshoulder:b4,rightshoulder:b5,leftstick:b10,rightstick:b11,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:b6,righttrigger:b7" );
/* Initialize SDL (Note: video is required to start event loop) */
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_GAMECONTROLLER ) < 0) {
fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
exit(1);
}
/* Print information about the controller */
for (i = 0; i < SDL_NumJoysticks(); ++i) {
if ( SDL_IsGameController(i) )
{
nController++;
name = SDL_GameControllerNameForIndex(i);
printf("Game Controller %d: %s\n", i, name ? name : "Unknown Controller");
}
}
printf("There are %d game controllers attached\n", nController);
if (argv[1]) {
int nreportederror = 0;
SDL_Event event;
gamecontroller = SDL_GameControllerOpen(atoi(argv[1]));
while ( s_ForceQuit == SDL_FALSE ) {
if (gamecontroller == NULL) {
if ( nreportederror == 0 ) {
printf("Couldn't open joystick %d: %s\n", atoi(argv[1]), SDL_GetError());
nreportederror = 1;
}
} else {
nreportederror = 0;
WatchGameController(gamecontroller);
SDL_GameControllerClose(gamecontroller);
}
gamecontroller = NULL;
SDL_WaitEvent( &event );
if ( event.type == SDL_JOYDEVICEADDED )
gamecontroller = SDL_GameControllerOpen(atoi(argv[1]));
}
}
SDL_QuitSubSystem(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_GAMECONTROLLER );
return (0);
}
#else
int
main(int argc, char *argv[])
{
fprintf(stderr, "SDL compiled without Joystick support.\n");
exit(1);
}
#endif