 "wall" around the given camera which can be used for FlxSprite collision</p><p class="javadoc">Parameters:</p><table class="table table-bordered params"><tr><th style="width:25%;"><code>Camera</code></th><td><p>The FlxCamera to use for the wall bounds (can be FlxG.camera for the current one)</p></td></tr><tr><th style="width:25%;"><code>Placement</code></th><td><p>Whether to place the camera wall outside or inside</p></td></tr><tr><th style="width:25%;"><code>Thickness</code></th><td><p>The thickness of th