Java-Gaming.org    
Featured games (81)
games approved by the League of Dukes
Games in Showcase (499)
Games in Android Showcase (118)
games submitted by our members
Games in WIP (567)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  Libgdx Tiled objects collision  (Read 822 times)
0 Members and 1 Guest are viewing this topic.
Offline ShouravBR

Junior Newbie





« Posted 2013-10-16 06:27:12 »

I searched the forums with no luck.

I was reading this article 2d platformer guide, scroll down to type 4: vectorial. This approach seems very versatile and approachable when I saw TileD objects and Libgdx's math package.

So I use the object layer in TileD to provide bounds and extract the polygon & rectangle objects and tried using the Intersector class to determine collision and etc.

The problem is how do i transform the object's vertices to my TiledMapRenderer/OrthographicCamera's scale.
The object is too big and not in my camera coordinates so all the math doesn't work. I tried rendering the object with/without projection matrix but it never showed up.

Should I post my map and code?
Offline Rayexar

Junior Member


Medals: 2
Exp: 5 years



« Reply #1 - Posted 2013-10-16 11:19:23 »

Did you need to set the TiledMapRenderer's view to the camera, by doing mapRenderer.setView(camera)?

How are you drawing the object? Any renderer you're using, such as ShapeRenderer shouldhave it's view set to the camera and the projection matrix set to camera.combined.

Edit, some code would also be helpful so we can test it out and see what's wrong.
Offline ShouravBR

Junior Newbie





« Reply #2 - Posted 2013-10-16 12:07:51 »

I pretty much figure everything out. Setting the scale to map renderer's unitScale turned it into camera coordinates.

setScale method is in polygons only.  I can't find one in Rectangles.
(I could turn rectangles in polygons)

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
float unitScale = 1 / 16f;
renderer = new OrthogonalTiledMapRenderer(map, unitScale);

MapObjects objects = ((MapLayer) map.getLayers().get("3")).getObjects();

poly = ((PolygonMapObject) objects.get(0)).getPolygon();
poly.setScale(1/16f, 1/16f);
poly.setPosition(1, 1);

rect1 = ((RectangleMapObject) objects.get(1)).getRectangle();
rect2 = ((RectangleMapObject) objects.get(2)).getRectangle();

sr = new ShapeRenderer();

// rendering
sr.setProjectionMatrix(camera.combined);
sr.begin(ShapeType.Line);
sr.setColor(Color.BLUE);
sr.polygon(poly.getTransformedVertices());


Just need to scale those two rectangle ledges and work on hit testing.
Any difference between 4 sided polygon vs a rectangle?
Pages: [1]
  ignore  |  Print  
 
 
You cannot reply to this message, because it is very, very old.

 

Add your game by posting it in the WIP section,
or publish it in Showcase.

The first screenshot will be displayed as a thumbnail.

Pippogeek (39 views)
2014-09-24 16:13:29

Pippogeek (30 views)
2014-09-24 16:12:22

Pippogeek (19 views)
2014-09-24 16:12:06

Grunnt (45 views)
2014-09-23 14:38:19

radar3301 (27 views)
2014-09-21 23:33:17

BurntPizza (63 views)
2014-09-21 02:42:18

BurntPizza (33 views)
2014-09-21 01:30:30

moogie (41 views)
2014-09-21 00:26:15

UprightPath (50 views)
2014-09-20 20:14:06

BurntPizza (54 views)
2014-09-19 03:14:18
List of Learning Resources
by Longor1996
2014-08-16 10:40:00

List of Learning Resources
by SilverTiger
2014-08-05 19:33:27

Resources for WIP games
by CogWheelz
2014-08-01 16:20:17

Resources for WIP games
by CogWheelz
2014-08-01 16:19:50

List of Learning Resources
by SilverTiger
2014-07-31 16:29:50

List of Learning Resources
by SilverTiger
2014-07-31 16:26:06

List of Learning Resources
by SilverTiger
2014-07-31 11:54:12

HotSpot Options
by dleskov
2014-07-08 01:59:08
java-gaming.org is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑gaming.org
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!