Vec vec_by_mouse(int x, int y) {
Vec ans = new Vec();
ans.x = (x - dim.width / 2.) / size;
ans.y = -(y - dim.height / 2.) / size;
return ans;
}
Vec wall_power(Ball p) {
Vec ans = new Vec();
is_colide = false;
ans.x = wall_power2(p.pos.x);
ans.y = wall_power2(p.pos.y);
if (is_colide) ans.sub_to(p.speed.mult(10));
return ans;
}
Vec mult(double scalar) {
Vec ans = new Vec();
ans.x = x * scalar;
ans.y = y * scalar;
return ans;
}
Vec sub(Vec right) {
Vec ans = new Vec();
ans.x = x - right.x;
ans.y = y - right.y;
return ans;
}
Vec add(Vec right) {
Vec ans = new Vec();
ans.x = x + right.x;
ans.y = y + right.y;
return ans;
}
Vec div(double a) {
Vec ans = new Vec();
ans.x = x / a;
ans.y = y / a;
return ans;
}