Question

Am making a simple flash game and am trying to keep the avatar from hitting walls in a given level, here is the code I wrote, its simple enough

       var hitWall:Boolean = checkWallHitlvl1();



        if ( downKeyIsBeingPressed  )
            {
                avatar.moveABit( 0, 1 );
                if(hitWall)
                {
                    avatar.moveABit( 0, -5);

                }

            }
            else if ( upKeyIsBeingPressed  )
            {
                avatar.moveABit( 0, -1 );
                if(hitWall)
                {
                    avatar.moveABit( 0, 5 );

                }

            }   
            else if ( leftKeyIsBeingPressed  )
            {
                avatar.moveABit( -1, 0 );
                if(hitWall)
                {

                    avatar.moveABit( 5, 0 );


                }

            }
            else if ( rightKeyIsBeingPressed )
            {
                avatar.moveABit( 1, 0 );
                if(hitWall)
                {
                    avatar.moveABit( -5, 0 );

                }

            }   

hitWall checks if the avatar hits the level’s walls, the problem with this code is that even if for say I hit a wall from the right, and am trying to move left, I cant since hitWall doesn’t check from where the wall is hit, my question is is there a way to make this work without actually needing to figure out from which direction the player hits a given wall, i tried moving the avatar automatically to the left if he hits it from the right, but it didn’t quite work out so well…

any suggestions please?

thanx =D

EDIT1: i edited the code, it works now, but it looks kinda jerky since i have to step backwards 5 pixels, I cannot step backwards 1 pixel unfortunately since, since flash’s hitTestObject still returns true (checkWallHitLvl1() basically uses hitTestObject to check if the player hits the wall), any suggestions?

EDIT2: i found a way to fix it, just need to run some more tests and make sure it works fine, if they all pass i will post the code up, basically I just used 4 boolean variables to check which direction i hit the wall, and went from there…=D

Answer 1

What I do is keep the position of when it is not hit.

    if ( downKeyIsBeingPressed  )
        {
            avatar.moveABit( 0, 1 );
            if(hitWall)
            {
                avatar.moveTo(safeX, safeY);

            } else {
                safeX = x;
                safeY = y;
        }