Collision per vectors ?

[ravenheart]

hello again =)

i have a breakout and now i want to now if the ball hits a rectangle, then it should bounce off

is there any possibility to manage that per normals- vectors?

or are if clauses better?

[Wizzard]

Try having a look at this. Of course there is other ways to do collision detection, but this is by far the easiest to implement.

[zarka]

make a google search for "circle rectangle intersection" or something similar and you should probably get some good results but for a breakout clone i think rectangle-rectangle intersections will suffice. And they are dead simple to do

[ravenheart]

and how do i do it when i want to manage many bricks that disappear when hit?

something like a bool exists?

[zarka]

and how do i do it when i want to manage many bricks that disappear when hit?

something like a bool exists?

yeah that will work . you could also look into managing your objects dynamically in some way this would probably be a "nicer" solution start with checking out std::vector.

[ravenheart]

and how can i get the direction from where my ball came? only collision is not enough, i need to know where the ball hit ,
my bat can be moved up down left and right, so i need to know in what direction the ball should bounce

[zarka]

and how can i get the direction from where my ball came? only collision is not enough, i need to know where the ball hit ,
my bat can be moved up down left and right, so i need to know in what direction the ball should bounce

prev_position - cur_positon = direction_vector

a good way of defining how the ball should move would be a direction vector and a speed value. then you just have to read up on some vector math and be ready to go