CS in Algebra: Big Game Collision Detection

All the sprites in your big game are now animated.

But nothing happens when they run into each
other.

We're going to use collision detection to
find out when sprites have touched each other

so that we can later apply rules like increasing
or decreasing your score when your sprites

collide.

Using the provided line-length function, you
will complete a function distance that uses

the distance formula to calculate the distance
between the center points of two sprites.

Next you'll update the collide function to
use the distance function.

If the distance between two sprites is less
than 100 pixels, the sprites are close enough

to be touching and the collide function should
return true.

If everything works, you'll see that when
the player collides with the target, your

score increases.

And when the player collides with the danger,
your score decreases.