宅男遇上 Wii remote

前幾天看到同事分享 Johnny Lee的影片。心中有蠻大的震憾。一直認為 Wii Remote 已經很神奇了…沒想到還有那麼多的玩法…果然厲害。就開始想在自己的機器上玩玩 Wii Remote.

沒想到一切都是如此的美好： Ubuntu 已經有了 CWiid 的 package.
直接安裝後，把 bluetooth 打開，就可以玩了

身為一名陽光宅男…當然好好的研究一下這個好玩的東西…
也就寫了一支小小的程式…可以依 Wii remote 的水平改變小 Icon 的位置。

Filename: wii_toy.c

#include <wiimote.h>
#include <wiimote_api.h>
#include <Ecore_Evas.h>
#include <Ecore.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>

#define WIDTH 800
#define HEIGHT 600

Ecore_Evas  *   ee;
Evas        *   evas;

struct remoter {
     Evas_Object *   o;
     wiimote_t *wii;
     double x,y,size;
};

inline void set_wiiremote(wiimote_t *wii) {
     wii->led.one  = 1;
     wii->mode.ir = 1;
     wii->mode.acc =1;
}

inline void change_position(struct remoter *handle) {
     if ( abs(handle->wii->tilt.x) <= 90 &&
                     abs (handle->wii->tilt.y) <= 90) {

             handle->x += (double)handle->wii->tilt.x/10.0f;
             handle->y += (double)handle->wii->tilt.y/10.0f;
     }
     handle->x = handle->x <= 0 ? 0 : handle->x >= WIDTH - handle->size?  WIDTH-handle->size :  handle->x;
     handle->y = handle->y <= 0 ? 0 : handle->y >= HEIGHT - handle->size? HEIGHT-handle->size : handle->y;


//      fprintf(stderr, "remote: x=%3.3f y=%3.3f\n",handle->x,handle->y);
     evas_object_move(handle->o, handle->x,handle->y);
}

inline void show_status(wiimote_t *wii) {
     fprintf(stderr, "AXIS x=%03d y=%03d z=%03d\n",
             wii->axis.x,
             wii->axis.y,
             wii->axis.z);
     fprintf(stderr, "TILT x=%.3f y=%.3f z=%.3f\n",
             wii->tilt.x,
             wii->tilt.y,
             wii->tilt.z);
     fprintf(stderr, "FORCE x=%.3f y=%.3f z=%.3f\n",
             wii->force.x,
             wii->force.y,
             wii->force.z);
     fprintf(stderr,"\n");
}

int scan_wii_event(void *data) {
     struct remoter *handle=(struct remoter *)data;
     if (wiimote_is_open(handle->wii))  {
             if (wiimote_update(handle->wii) < 0) {
                     printf("Update Failed!! Exit!!\n");
                     wiimote_disconnect(handle->wii);
                     exit(1);
             }
             if (handle->wii->keys.home) {
                     printf("Home pressed!! Exit!!\n");
                     wiimote_disconnect(handle->wii);
                     exit(1);
             }
             change_position(handle);
             //show_status(handle->wii);
     }
     return 1;
}

int main(int argc,char **argv) {
     struct remoter handle;
     if (argc < 2) {
             fprintf(stderr, "Usage: test1 BDADDR\n");
             exit(1);
     }
     Evas_Object *   background;
     ecore_evas_init();

     ee = ecore_evas_software_x11_new(NULL, 0,  0, 0, WIDTH, HEIGHT);
     ecore_evas_title_set(ee, "Tick's Wii Toy");
//      ecore_evas_borderless_set(ee, 1);  // borderless
     ecore_evas_borderless_set(ee, 0);  // border
     ecore_evas_show(ee);


     evas = ecore_evas_get(ee);
     evas_font_path_append(evas, "fonts/");


     background = evas_object_rectangle_add(evas);
     evas_object_color_set(background,30,30,30,255);
     evas_object_resize(background, WIDTH, HEIGHT);
     evas_object_move( background,0 ,0 );
     evas_object_focus_set(background, 1);
     evas_object_show( background);

     handle.size = 64;
     handle.x=(WIDTH-handle.size)/2;
     handle.y=(HEIGHT-handle.size)/2;
     handle.o = evas_object_image_add(evas);
     evas_object_image_file_set (handle.o, "/home/tick/work/e17/icon.png" ,NULL);
     if (evas_object_image_load_error_get(handle.o)) {
             printf("Evas can't load PNG files. Check Evas has PNG\n");
             return 1;
     }
     evas_object_color_set(handle.o,255,255,255,128);
     evas_object_move(handle.o, handle.x,handle.y);
     evas_object_resize(handle.o,handle.size,handle.size);
     evas_object_image_fill_set(handle.o, 0, 0, handle.size, handle.size);
     evas_object_show(handle.o);

     printf("Please press 1+2 to connect Wii remote!!\n");
     handle.wii = wiimote_open(argv[1]);
     if (!handle.wii) {
             fprintf(stderr, "unable to open wiimote:\n");
             exit(1);
     }
     printf("Connecting.......\n");
     set_wiiremote(handle.wii);
     ecore_timer_add(.01,scan_wii_event, &handle);
     ecore_main_loop_begin();

     return 0;
}

使用:
1．先下 /etc/init.d/bluetooth start 打開bluetooth
2．按下 Wii remote 的 1+2 鍵
3．當 Wii remote 的Led 還在閃時，做 hcitool scan 找出你的 remote bdaddr
4． compile 完程式後，打 ./wii_toy 00:1A:E9:3B:CA:49 <--- 每個人的 wii remote 不一樣 就可以玩了

tick@tock:~/work/e17>hcitool scan
Scanning ...
     00:1A:E9:3B:CA:49       Nintendo RVL-CNT-01
tick@tock:~/work/e17>gcc `pkg-config --libs ecore-evas evas` -I/usr/local/include/libcwiimote-0.4.0/libcwiimote/ -lcwiimote -lbluetooth -Wall -pipe -D_ENABLE_TILT -D_ENABLE_FORCE  -g2 -o wii_toy wii_toy.c
tick@tock:~/work/e17>./wii_toy 00:1A:E9:3B:CA:49
Please press 1+2 to connect Wii remote!!
Connecting.......

有圖有真象