billard.c

这是一个相当棒的Linux下的台球游戏

    for(i=0;i<walls->nr;i++){
        walls->border[i].mu          = 0.1;
        walls->border[i].loss0       = 0.2;
        walls->border[i].loss_max    = 0.5;
        walls->border[i].loss_wspeed = 4.0;  /* [m/s] */
    }

    /* table surface */
#define TABLE_W2 (TABLE_W-BALL_D*0.9)
#define TABLE_L2 (TABLE_L-BALL_D*0.9)
    walls->border[30].pnr = 3;
    walls->border[30].r1 = vec_xyz( -TABLE_W/2.0, -TABLE_L/2.0, -BALL_D/2.0-0.0001 );
    walls->border[30].r2 = vec_xyz( +TABLE_W/2.0, -TABLE_L/2.0, -BALL_D/2.0-0.0001 );
    walls->border[30].r3 = vec_xyz( +TABLE_W/2.0, +TABLE_L/2.0, -BALL_D/2.0-0.0001 );
    walls->border[30].n  = vec_xyz( 0.0, 0.0, 1.0 );

    walls->border[31].pnr = 3;
    walls->border[31].r1 = vec_xyz( -TABLE_W/2.0, -TABLE_L/2.0, -BALL_D/2.0-0.0001 );
    walls->border[31].r3 = vec_xyz( +TABLE_W/2.0, +TABLE_L/2.0, -BALL_D/2.0-0.0001 );
    walls->border[31].r2 = vec_xyz( -TABLE_W/2.0, +TABLE_L/2.0, -BALL_D/2.0-0.0001 );
    walls->border[31].n  = vec_xyz( 0.0, 0.0, 1.0 );
#undef TABLE_W2
#undef TABLE_L2

    walls->border[30].mu          = 0.2;
    walls->border[30].loss0       = 0.6;
    walls->border[30].loss_max    = 0.99;
    walls->border[30].loss_wspeed = 1.5;
    walls->border[31].mu          = 0.2;
    walls->border[31].loss0       = 0.6;
    walls->border[31].loss_max    = 0.99;
    walls->border[31].loss_wspeed = 1.5;

#else
    /* borders */
    walls->nr=4;
    walls->border = billard_malloc(sizeof(BorderType)*walls->nr);
    walls->border[0].r = vec_xyz( +TABLE_W/2.0, 0.0, 0.0 );
    walls->border[0].n = vec_xyz( -1.0, 0.0, 0.0 );
    walls->border[1].r = vec_xyz( -TABLE_W/2.0, 0.0, 0.0 );
    walls->border[1].n = vec_xyz( +1.0, 0.0, 0.0 );
    walls->border[2].r = vec_xyz( 0.0, +TABLE_L/2.0, 0.0 );
    walls->border[2].n = vec_xyz( 0.0, -1.0, 0.0 );
    walls->border[3].r = vec_xyz( 0.0, -TABLE_L/2.0, 0.0 );
    walls->border[3].n = vec_xyz( 0.0, +1.0, 0.0 );
#endif

    /* holes */
    walls->holenr = 6;
    if( walls->hole != NULL ) billard_free( walls->hole );
    walls->hole = billard_malloc(sizeof(HoleType)*walls->holenr);
    /* middle right */
    walls->hole[0].aim = vec_xyz( +TABLE_W/2.0-HOLE2_AIMOFFS, 0.0, 0.0 );
    walls->hole[0].pos = vec_xyz( +TABLE_W/2.0+HOLE2_XYOFFS, 0.0, 0.0 );
    walls->hole[0].r   = HOLE2_R;
    /* middle left */
    walls->hole[1].aim = vec_xyz( -TABLE_W/2.0+HOLE2_AIMOFFS, 0.0, 0.0 );
    walls->hole[1].pos = vec_xyz( -TABLE_W/2.0-HOLE2_XYOFFS, 0.0, 0.0 );
    walls->hole[1].r   = HOLE2_R;
    /* upper right */
    walls->hole[2].aim = vec_xyz( +TABLE_W/2.0-HOLE1_AIMOFFS, +TABLE_L/2.0-HOLE1_AIMOFFS, 0.0 );
    walls->hole[2].pos = vec_xyz( +TABLE_W/2.0+HOLE1_XYOFFS, +TABLE_L/2.0+HOLE1_XYOFFS, 0.0 );
    walls->hole[2].r   = HOLE1_R;
    /* upper left */
    walls->hole[3].aim = vec_xyz( -TABLE_W/2.0+HOLE1_AIMOFFS, +TABLE_L/2.0-HOLE1_AIMOFFS, 0.0 );
    walls->hole[3].pos = vec_xyz( -TABLE_W/2.0-HOLE1_XYOFFS, +TABLE_L/2.0+HOLE1_XYOFFS, 0.0 );
    walls->hole[3].r   = HOLE1_R;
    /* lower left */
    walls->hole[4].aim = vec_xyz( -TABLE_W/2.0+HOLE1_AIMOFFS, -TABLE_L/2.0-HOLE1_AIMOFFS, 0.0 );
    walls->hole[4].pos = vec_xyz( -TABLE_W/2.0-HOLE1_XYOFFS, -TABLE_L/2.0-HOLE1_XYOFFS, 0.0 );
    walls->hole[4].r   = HOLE1_R;
    /* lower right */
    walls->hole[5].aim = vec_xyz( +TABLE_W/2.0-HOLE1_AIMOFFS, -TABLE_L/2.0+HOLE1_AIMOFFS, 0.0 );
    walls->hole[5].pos = vec_xyz( +TABLE_W/2.0+HOLE1_XYOFFS, -TABLE_L/2.0-HOLE1_XYOFFS, 0.0 );
    walls->hole[5].r   = HOLE1_R;
}


void create_6hole_walls_snooker( BordersType * walls )
{
    int i;

    /* borders */
#ifdef USE_ADV_BORDER
    /* borders */
//    walls->nr=30;
    walls->nr=32;
    if( walls->border != NULL ) billard_free( walls->border );
    walls->border = billard_malloc( sizeof(BorderType)*walls->nr );

    /* bonds */
    walls->border[0].pnr = 3;
    walls->border[0].r1 = vec_xyz( +TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[0].r2 = vec_xyz( +TABLE_W/2.0,              +HOLE2_W/2.0, 0.0 );
    walls->border[0].r3 = vec_xyz( +TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[0].n  = vec_xyz( -1.0, 0.0, 0.0 );

    walls->border[1].pnr = 3;
    walls->border[1].r1 = vec_xyz( +TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[1].r2 = vec_xyz( +TABLE_W/2.0,              -HOLE2_W/2.0, 0.0 );
    walls->border[1].r3 = vec_xyz( +TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[1].n  = vec_xyz( -1.0, 0.0, 0.0 );

    walls->border[2].pnr = 3;
    walls->border[2].r1 = vec_xyz( -TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[2].r2 = vec_xyz( -TABLE_W/2.0,              +HOLE2_W/2.0, 0.0 );
    walls->border[2].r3 = vec_xyz( -TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[2].n  = vec_xyz( +1.0, 0.0, 0.0 );

    walls->border[3].pnr = 3;
    walls->border[3].r1 = vec_xyz( -TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[3].r2 = vec_xyz( -TABLE_W/2.0,              -HOLE2_W/2.0, 0.0 );
    walls->border[3].r3 = vec_xyz( -TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[3].n  = vec_xyz( +1.0, 0.0, 0.0 );

    walls->border[4].pnr = 3;
    walls->border[4].r1 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, +TABLE_L/2.0, -BALL_D/2.0 );
    walls->border[4].r2 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2, +TABLE_L/2.0, 0.0 );
    walls->border[4].r3 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, +TABLE_L/2.0, BALL_D/2.0 );
    walls->border[4].n  = vec_xyz( 0.0, -1.0, 0.0 );

    walls->border[5].pnr = 3;
    walls->border[5].r1 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, -TABLE_L/2.0, -BALL_D/2.0 );
    walls->border[5].r2 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2, -TABLE_L/2.0, 0.0 );
    walls->border[5].r3 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, -TABLE_L/2.0, BALL_D/2.0 );
    walls->border[5].n  = vec_xyz( 0.0, +1.0, 0.0 );

    /* edges */
    /* upper right */
    walls->border[6].pnr = 2;
    walls->border[6].r1 = vec_xyz( +TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[6].r2 = vec_xyz( +TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[18].pnr = 3;
    walls->border[18].r1 = vec_xyz( +TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[18].r2 = vec_xyz( +TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[18].r3 = vec_xyz( +TABLE_W/2.0+1.0, +TABLE_L/2.0-HOLE1_W/SQR2+HOLE1_TAN, 0.0 );
    walls->border[18].n  = vec_unit(vec_cross(vec_diff(walls->border[18].r2,walls->border[18].r1),vec_diff(walls->border[18].r3,walls->border[18].r1)));

    /* upper right */
    walls->border[7].pnr = 2;
    walls->border[7].r1 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2, +TABLE_L/2.0, -BALL_D/2.0 );
    walls->border[7].r2 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2, +TABLE_L/2.0, BALL_D/2.0 );
    walls->border[19].pnr = 3;
    walls->border[19].r1 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2, +TABLE_L/2.0, -BALL_D/2.0 );
    walls->border[19].r2 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2, +TABLE_L/2.0, BALL_D/2.0 );
    walls->border[19].r3 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2+HOLE1_TAN, +TABLE_L/2.0+1.0, 0.0 );
    walls->border[19].n  = vec_unit(vec_cross(vec_diff(walls->border[19].r1,walls->border[19].r2),vec_diff(walls->border[19].r3,walls->border[19].r1)));

    /* upper left */
    walls->border[8].pnr = 2;
    walls->border[8].r1 = vec_xyz( -TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[8].r2 = vec_xyz( -TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[20].pnr = 3;
    walls->border[20].r1 = vec_xyz( -TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[20].r2 = vec_xyz( -TABLE_W/2.0, +TABLE_L/2.0-HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[20].r3 = vec_xyz( -TABLE_W/2.0-1.0, +TABLE_L/2.0-HOLE1_W/SQR2+HOLE1_TAN, 0.0 );
    walls->border[20].n  = vec_unit(vec_cross(vec_diff(walls->border[20].r1,walls->border[20].r2),vec_diff(walls->border[20].r3,walls->border[20].r1)));

    /* upper left */
    walls->border[9].pnr = 2;
    walls->border[9].r1 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, +TABLE_L/2.0, -BALL_D/2.0 );
    walls->border[9].r2 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, +TABLE_L/2.0, BALL_D/2.0 );
    walls->border[21].pnr = 3;
    walls->border[21].r1 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, +TABLE_L/2.0, -BALL_D/2.0 );
    walls->border[21].r2 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, +TABLE_L/2.0, BALL_D/2.0 );
    walls->border[21].r3 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2-HOLE1_TAN, +TABLE_L/2.0+1.0, 0.0 );
    walls->border[21].n  = vec_unit(vec_cross(vec_diff(walls->border[21].r2,walls->border[21].r1),vec_diff(walls->border[21].r3,walls->border[21].r1)));

    /* lower right */
    walls->border[10].pnr = 2;
    walls->border[10].r1 = vec_xyz( +TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[10].r2 = vec_xyz( +TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[22].pnr = 3;
    walls->border[22].r1 = vec_xyz( +TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[22].r2 = vec_xyz( +TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[22].r3 = vec_xyz( +TABLE_W/2.0+1.0, -TABLE_L/2.0+HOLE1_W/SQR2-HOLE1_TAN, 0.0 );
    walls->border[22].n  = vec_unit(vec_cross(vec_diff(walls->border[22].r1,walls->border[22].r2),vec_diff(walls->border[22].r3,walls->border[22].r1)));

    /* lower right */
    walls->border[11].pnr = 2;
    walls->border[11].r1 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2, -TABLE_L/2.0, -BALL_D/2.0 );
    walls->border[11].r2 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2, -TABLE_L/2.0, BALL_D/2.0 );
    walls->border[23].pnr = 3;
    walls->border[23].r1 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2, -TABLE_L/2.0, -BALL_D/2.0 );
    walls->border[23].r2 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2, -TABLE_L/2.0, BALL_D/2.0 );
    walls->border[23].r3 = vec_xyz( +TABLE_W/2.0-HOLE1_W/SQR2+HOLE1_TAN, -TABLE_L/2.0-1.0, 0.0 );
    walls->border[23].n  = vec_unit(vec_cross(vec_diff(walls->border[23].r2,walls->border[23].r1),vec_diff(walls->border[23].r3,walls->border[23].r1)));

    /* lower left */
    walls->border[12].pnr = 2;
    walls->border[12].r1 = vec_xyz( -TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[12].r2 = vec_xyz( -TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[24].pnr = 3;
    walls->border[24].r1 = vec_xyz( -TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, -BALL_D/2.0 );
    walls->border[24].r2 = vec_xyz( -TABLE_W/2.0, -TABLE_L/2.0+HOLE1_W/SQR2, BALL_D/2.0 );
    walls->border[24].r3 = vec_xyz( -TABLE_W/2.0-1.0, -TABLE_L/2.0+HOLE1_W/SQR2-HOLE1_TAN, 0.0 );
    walls->border[24].n  = vec_unit(vec_cross(vec_diff(walls->border[24].r2,walls->border[24].r1),vec_diff(walls->border[24].r3,walls->border[24].r1)));

    /* lower left */
    walls->border[13].pnr = 2;
    walls->border[13].r1 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, -TABLE_L/2.0, -BALL_D/2.0 );
    walls->border[13].r2 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, -TABLE_L/2.0, BALL_D/2.0 );
    walls->border[25].pnr = 3;
    walls->border[25].r1 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, -TABLE_L/2.0, -BALL_D/2.0 );
    walls->border[25].r2 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2, -TABLE_L/2.0, BALL_D/2.0 );
    walls->border[25].r3 = vec_xyz( -TABLE_W/2.0+HOLE1_W/SQR2-HOLE1_TAN, -TABLE_L/2.0-1.0, 0.0 );
    walls->border[25].n  = vec_unit(vec_cross(vec_diff(walls->border[25].r1,walls->border[25].r2),vec_diff(walls->border[25].r3,walls->border[25].r1)));

    /* middle left */
    walls->border[14].pnr = 2;
    walls->border[14].r1 = vec_xyz( -TABLE_W/2.0, HOLE2_W/2.0, -BALL_D/2.0 );
    walls->border[14].r2 = vec_xyz( -TABLE_W/2.0, HOLE2_W/2.0, BALL_D/2.0 );
    walls->border[26].pnr = 3;
    walls->border[26].r1 = vec_xyz( -TABLE_W/2.0, HOLE2_W/2.0, -BALL_D/2.0 );
    walls->border[26].r2 = vec_xyz( -TABLE_W/2.0, HOLE2_W/2.0, BALL_D/2.0 );
    walls->border[26].r3 = vec_xyz( -TABLE_W/2.0-1.0, HOLE2_W/2.0-HOLE2_TAN, 0.0 );
    walls->border[26].n  = vec_unit(vec_cross(vec_diff(walls->border[26].r2,walls->border[26].r1),vec_diff(walls->border[26].r3,walls->border[26].r1)));

    /* middle left */
    walls->border[15].pnr = 2;
    walls->border[15].r1 = vec_xyz( -TABLE_W/2.0, -HOLE2_W/2.0, -BALL_D/2.0 );
    walls->border[15].r2 = vec_xyz( -TABLE_W/2.0, -HOLE2_W/2.0, BALL_D/2.0 );
    walls->border[27].pnr = 3;
    walls->border[27].r1 = vec_xyz( -TABLE_W/2.0, -HOLE2_W/2.0, -BALL_D/2.0 );
    walls->border[27].r2 = vec_xyz( -TABLE_W/2.0, -HOLE2_W/2.0, BALL_D/2.0 );
    walls->border[27].r3 = vec_xyz( -TABLE_W/2.0-1.0, -HOLE2_W/2.0+HOLE2_TAN, 0.0 );
    walls->border[27].n  = vec_unit(vec_cross(vec_diff(walls->border[27].r1,walls->border[27].r2),vec_diff(walls->border[27].r3,walls->border[27].r1)));

    /* middle right */
    walls->border[16].pnr = 2;
    walls->border[16].r1 = vec_xyz( +TABLE_W/2.0, HOLE2_W/2.0, -BALL_D/2.0 );
    walls->border[16].r2 = vec_xyz( +TABLE_W/2.0, HOLE2_W/2.0, BALL_D/2.0 );
    walls->border[28].pnr = 3;
    walls->border[28].r1 = vec_xyz( +TABLE_W/2.0, HOLE2_W/2.0, -BALL_D/2.0 );
    walls->border[28].r2 = vec_xyz( +TABLE_W/2.0, HOLE2_W/2.0, BALL_D/2.0 );
    walls->border[28].r3 = vec_xyz( +TABLE_W/2.0+1.0, HOLE2_W/2.0-HOLE2_TAN, 0.0 );
    walls->border[28].n  = vec_unit(vec_cross(vec_diff(walls->border[28].r1,walls->border[28].r2),vec_diff(walls->border[28].r3,walls->border[28].r1)));

    /* middle right */
    walls->border[17].pnr = 2;
    walls->border[17].r1 = vec_xyz( +TABLE_W/2.0, -HOLE2_W/2.0, -BALL_D/2.0 );
    walls->border[17].r2 = vec_xyz( +TABLE_W/2.0, -HOLE2_W/2.0, BALL_D/2.0 );
    walls->border[29].pnr = 3;
    walls->border[29].r1 = vec_xyz( +TABLE_W/2.0, -HOLE2_W/2.0, -BALL_D/2.0 );
    walls->border[29].r2 = vec_xyz( +TABLE_W/2.0, -HOLE2_W/2.0, BALL_D/2.0 );
    walls->border[29].r3 = vec_xyz( +TABLE_W/2.0+1.0, -HOLE2_W/2.0+HOLE2_TAN, 0.0 );
    walls->border[29].n  = vec_unit(vec_cross(vec_diff(walls->border[29].r2,walls->border[29].r1),vec_diff(walls->border[29].r3,walls->border[29].r1)));

    /* friction constants and loss factors */
    for(i=0;i<walls->nr;i++){
        walls->border[i].mu          = 0.1;
        walls->border[i].loss0       = 0.2;
        walls->border[i].loss_max    = 0.5;
        walls->border[i].loss_wspeed = 4.0;  /* [m/s] */
    }

    /* table surface */
#define TABLE_W2 (TABLE_W-BALL_D*0.9)
#define TABLE_L2 (TABLE_L-BALL_D*0.9)
    walls->border[30].pnr = 3;
    walls->border[30].r1 = vec_xyz( -TABLE_W/2.0, -TABLE_L/2.0, -BALL_D/2.0-0.0001 );
    walls->border[30].r2 = vec_xyz( +TABLE_W/2.0, -TABLE_L/2.0, -BALL_D/2.0-0.0001 );
    walls->border[30].r3 = vec_xyz( +TABLE_W/2.0, +TABLE_L/2.0, -BALL_D/2.0-0.0001 );
    walls->border[30].n  = vec_xyz( 0.0, 0.0, 1.0 );