void
physics_new_ball(void)
{
ball.x = arena.x / 2;
ball.y = arena.y / 2;
ball_velocity.x = random_velocity();
ball_velocity.y = random_velocity();
ball_spin = ((double)random() / ((double)RAND_MAX * 100)) + 0.005;
}
// constructor sets up new sphere
// NOTE : while condition was removed
// TODO : maybe include it again
Sphere::Sphere(double rad)
{
// RADIUS MUST BE BEFORE RANDOM POINTS
radius = rad;
// gets 4 random points for the bezier curve
p1 = random_ranged_point(radius);
p2 = new_curve_point(p1);
p3 = new_curve_point(p2);
p4 = new_curve_point(p3);
// position starts at p1
pos = p1;
// 3D
previous_pos.x = 0.0;
previous_pos.y = 5.0;
previous_pos.z = 0.0;
// = {0.0, 5.0, 0.0};
// gets a random direction, this might be a wasted step
direction = random_direction(radius);
active = 0;
velocity = random_velocity();
// start on a curved path
path = 1;
color = random_color();
curve_length = get_curve_length();
start_time = (double) clock();
curve_time = curve_length / velocity;
ghost = 0;
}
/*
* struct sphere generate_sphere();
*
* return a ball
*/
struct sphere generate_sphere() {
struct sphere ball;
do{
// RADIUS MUST BE BEFORE RANDOM POINTS
ball.radius = random_radius();
// gets 4 random points for the bezier curve
ball.p1 = random_ranged_point(ball.radius);
ball.p2 = new_curve_point(ball.p1);
ball.p3 = new_curve_point(ball.p2);
ball.p4 = new_curve_point(ball.p3);
// position starts at p1
ball.pos = ball.p1;
ball.previous_pos = {0.0, 0.0};
//printf("generation: %f %f || %f %f\n", ball.previous_pos.x, ball.previous_pos.y, ball.pos.x, ball.pos.y);
// gets a random direction, this might be a wasted step
ball.direction = random_direction(ball.radius);
ball.active = 0;
ball.velocity = random_velocity();
// start on a curved path
ball.path = 1;
// dead variable is set to 0, used to prevent collisions
//ball.dead = 0;
ball.color = random_color();
ball.curve_length = curve_length( &ball );
ball.start_time = (double) clock();
ball.curve_time = ball.curve_length / ball.velocity;
ball.ghost = 0;
}while(collision_detection(ball) == 1 );
return ball;
}
/*
* struct sphere generate_sphere();
*
* return a ball
*/
struct sphere generate_sphere(int rad) {
struct sphere ball;
do{
// RADIUS MUST BE BEFORE RANDOM POINTS
ball.radius = (rad) ? next_ball_radius : random_radius();
// gets 4 random points for the bezier curve
ball.p1 = random_ranged_point(ball.radius);
ball.p2 = new_curve_point(ball.p1);
ball.p3 = new_curve_point(ball.p2);
ball.p4 = new_curve_point(ball.p3);
// position starts at p1
ball.pos = ball.p1;
// 3D
ball.previous_pos = {0.0, 5.0, 0.0};
// gets a random direction, this might be a wasted step
ball.direction = random_direction(ball.radius);
ball.active = 0;
ball.velocity = random_velocity();
// start on a curved path
ball.path = 1;
ball.color = random_color();
ball.curve_length = curve_length( &ball );
ball.start_time = (double) clock();
ball.curve_time = ball.curve_length / ball.velocity;
ball.ghost = 0;
// 3D
}while(collision_detection(ball) == 1 || ball.p1.x == 0.0 || ball.p1.y == 0.0 ||
ball.p1.z == 0.0);
return ball;
}