javascript - Player facing away from the wall should not collide -


i'm working on first javascript game. top down 2d view (think gta 1/2). i'm having trouble collision detection. have multiple entities 1 player , other static object (let's wall simplicity).

each object has x/y coordinates , player has velocity , angle (which way player facing 0-360 degrees). collision detection against wall works fine , stop velocity on 1 of axis if player collide having result player can "slide" agains wall.

now issue: once player collides agains wall movement on 1 of axis stopped. if player after turns around , facing away wall movement of axis still stopped since ha collided.

i player, if facing away object, free move how want's how achieve this? guess need figure out way player facing , if facing against or away object?

for( var = 0; < game.entities.length; i++ ) {             if( this._collision( game.entities[i] ) ) {                  var distancex = game.entities[i].x - this.x;                 var distancey = game.entities[i].y - this.y;                  if( distancex < 0 )                     distancex *= -1;                  if( distancey < 0 )                     distancey *= -1;                  if( !stopx ) {                     stopx = ( distancex > distancey );                 }                  if( !stopy ) {                     stopy = ( distancex < distancey );                 }             }         }

i figured out how this:

var degrees = ( math.atan2( game.entities[i].x - this.x, game.entities[i].y - this.y ) * 180 / math.pi ) + this.angle

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