MonoGame + TiledSharp Collision

Question

I am using Tiled (http://www.mapeditor.org) to generate my maps and TiledSharp (https://github.com/marshallward/TiledSharp) to load and draw my map.

So far so good. Map is drawn correcty (in correct layers) and hero movement is correct.

What I do not get. How to check collision between player and objects?

In my Update() I have something like

if (ks.IsKeyDown(Keys.W))
{
    playerMovement += new Vector2(0, -2);
    curAnimation = "Walk_North";
}

...

if (playerMovement.Length() != 0)
    player.MoveBy(playerMovement);

Checking the .tmx file for the map, there is my group with object I can collide with:

 <objectgroup name="Collision">
  <properties>
   <property name="collision" type="bool" value="true"/>
  </properties>
  <object id="1" x="1089" y="1118" width="62" height="65"/>
  <object id="2" x="801" y="1026" width="61" height="60"/>
 </objectgroup>

What I am now looking for is something like

If(tileAt(player.Position + playerMovement).Properties.Collision)
    playerMovement = Vector2.Zero();   

I think, everything is I need is there and I am just missing a simple step to compare players' position with the target position and its property :(

Any suggestions or examples would be appreciated. (Maybe just need to calculate it by myself in a simple method...)

Answer 1

Figured it out, actually quite easy:

First, in my class managing my map I set up an List with my collisionobjects.

foreach(var o in curMap.ObjectGroups["Collision"].Objects)
    collisionObjects.Add(new Rectangle((int)o.X, (int)o.Y, (int)o.Width, (int)o.Height));

In my UpdateGame() method I call a simple helper-method from my map-class checking for intersection:

public bool IsCollisionTile(Rectangle player)
{
    foreach (Rectangle rect in collisionObjects)
        if (rect.Intersects(player))
           return true;

    return false;
}

Finished.

More effort writing this posting than the actual implementation ^^