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#include <stdio.h>#include <string.h>#include <errno.h>#include "pz.h"static PzModule *circle;int x, y, tmp_x, tmp_y;static PzWidget *wid;int circle_dir;void draw_circle (PzWidget *wid, ttk_surface srf) {ttk_fillellipse(srf, x, y, 6, 6, ttk_makecol(255,0,0));}void start_game(){    x = 25;    y = 10;    circle_dir=1;move_circle();}int event_circle (PzEvent *ev) {   	     if (ttk_button_pressed (PZ_BUTTON_MENU)) {circle_dir=0;}   	     if (ttk_button_pressed (PZ_BUTTON_PLAY)) {circle_dir=1;}   	     if (ttk_button_pressed (PZ_BUTTON_PREVIOUS)) {circle_dir=2;}   	     if (ttk_button_pressed (PZ_BUTTON_NEXT)) {circle_dir=3;}   	     if (ttk_button_pressed (PZ_BUTTON_ACTION)) {start_game();}}int move_circle (){switch (circle_dir){		case 0:			y+=5;			wid->dirty++;		break;		case 1:			y-=5;			wid->dirty++;		break;		case 2:			x-=5;			wid->dirty++;		break;		case 3:			x+=5;			wid->dirty++;		break;}}PzWindow *new_circle_window(){    PzWindow *ret;    ret = pz_new_window ("Circle", PZ_WINDOW_NORMAL);    wid = pz_add_widget (ret, draw_circle, event_circle);    return pz_finish_window (ret);}void cleanup_circle() {    printf ("Bye-bye now...\n");}void init_circle() {    circle = pz_register_module ("circle", cleanup_circle);    pz_menu_add_action ("/Extras/Games/Circle", new_circle_window);}PZ_MOD_INIT (init_circle)