implement generic controller

1 files changed, 97 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..ff0673a
--- /dev/null
+++ b/main.c
@@ -0,0 +1,97 @@
+#include <stdio.h>
+#include <SDL.h>
+#include "controller.h"
+
+static int run(int joystick_id, int timeout, bool debug);
+static void print_channels(channel_t* channels, bool debug);
+
+int main(int argc, char *argv[]) { 
+
+    //initialize joystick library
+    if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) < 0) {
+        fprintf(stderr, "Couldn't initialize SDL joystick subsystem: %s\n", SDL_GetError());
+        exit(1);
+    }
+
+    run(0, 500, true);
+
+   
+    return 0;
+}
+
+static int run(int joystick_id, int timeout, bool debug) {
+
+    channel_t channels[CHANNELS];
+    channel_reset(channels);
+
+    //pointer to joystick in use
+    SDL_Joystick* joystick = NULL;
+
+    //event loop
+    SDL_Event e;
+    bool cont = true;
+    while (cont) {
+
+        if(SDL_WaitEventTimeout(&e, timeout)) {
+            switch( e.type ) {
+
+            case SDL_JOYDEVICEADDED:
+                if (e.jdevice.which == joystick_id) {
+                    fprintf(stderr, "Joystick %d connected\n", e.jdevice.which);
+                    joystick=SDL_JoystickOpen(e.jdevice.which);
+                    if(joystick) {
+                        fprintf(stderr, "Opened joystick %d\n", e.jdevice.which);
+                        fprintf(stderr, "Name: %s\n", SDL_JoystickName(joystick));
+                        fprintf(stderr, "Number of axes: %d\n", SDL_JoystickNumAxes(joystick));
+                        fprintf(stderr, "Number of buttons: %d\n", SDL_JoystickNumButtons(joystick));
+                        fprintf(stderr, "Number of balls: %d\n", SDL_JoystickNumBalls(joystick));
+                    } else {
+                        fprintf(stderr, "Couldn't open joystick %d\n", e.jdevice.which);
+                    }
+                }
+                break;
+
+            case SDL_JOYDEVICEREMOVED:
+                if (e.jdevice.which == joystick_id) {
+                    if (SDL_JoystickGetAttached(joystick)) {
+                        SDL_JoystickClose(joystick);
+                    }
+                    fprintf(stderr, "Joystick %d disconnected\n", e.jdevice.which);
+                }
+                break;
+
+            case SDL_JOYAXISMOTION:
+                event_axis(channels, e.jaxis.axis, e.jaxis.value);
+                break;
+
+            case SDL_JOYBUTTONDOWN:
+                event_button(channels, e.jbutton.button, true);
+                break;
+                
+            case SDL_JOYBUTTONUP:
+                event_button(channels, e.jbutton.button, false);
+                break;
+
+            case SDL_QUIT:
+                cont = false;
+                break;
+
+            default:
+                fprintf(stderr,"Unsupported event type: %d\n", e.type);
+                break;
+            }
+            
+        }
+        print_channels(channels, debug);
+    }
+    return 0;
+}
+
+void print_channels(channel_t* channels, bool debug) {
+    for(size_t i=0; i < CHANNELS; ++i) {
+        fprintf(stdout, "%u\n", channels[i]);
+        fprintf(stderr, "channel %zu: %u\n", i, channels[i]);
+    }
+    fflush(stdout);
+    fflush(stderr);
+}
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