collision detection problem help!

[staticlike]

I'm having a tad bit of trouble with my collision detection on the game that i am creating. the only thing is, i don't understand why it is giving me trouble. here's my collision detection code:

code:

if walls (mx, my) = 1 then             if rockettype = 1 then                 walls (mx, my) := 0             elsif rockettype = 2 then                 for i : -1 .. 1                     for o : -1 .. 1                         walls (mx + i, my + o) := 0                     end for                 end for             elsif rockettype = 3 then                 for i : -2 .. 2                     for o : -2 .. 2                         walls (mx + i, my + o) := 0                     end for                 end for             end if             launchm := false             mx := -5             my := -5         end if

mx and my are the missile's coordinates, walls is a 2d array of int, a 1 signifies a wall, launchm is the check that a there is a launched missile, rockettype is the kind of rocket the player is using.

The problem is when the player shoots the rocket right next to a wall. it will destroy the wall and keep going, as if the wall wasn't there, and get destroyed when it hits the next wall. Any idea on why it does this?

[Delos]

I don't see an incorporation of the launchm boolean anywhere. You might want to enclose your code with:

code:

if launchm then %... end if

[staticlike]

It already is enclosed inside of it, alongside the moving of it, so it can immediately destroy the wall if it moves into it.

oh yea, i found out the problem, though i don't remember what it was because i'm usually quite forgetful, plus it's been a few days after i fixed it.