# Tile source collision shapes (SOLVED) **URL:** \ **Category:** Questions\ **Created:** [June 17, 2019, 6:09pm UTC](https://forum.defold.com/t/tile-source-collision-shapes-solved/55193 "2019-06-17T18:09:09Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![t.ragel95](https://forum-defold.b-cdn.net/letter_avatar_proxy/v4/letter/t/258eb7/32.png) [@t.ragel95](https://forum.defold.com/u/t.ragel95)\ **Post date:** [June 17, 2019, 6:09pm UTC](https://forum.defold.com/t/tile-source-collision-shapes-solved/55193/1 "2019-06-17T18:09:09Z")
Hi, When I arrive to the part Tile source collision shapes in this tutorial [Physics in Defold](https://www.defold.com/manuals/physics/#anchor-tcs), when I click on the tiles, none gets red so I can’t make collision groups. Any idea why? Thanks. ---
**Author:** ![benjames171](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/benjames171/32/34759_2.png) [@benjames171](https://forum.defold.com/u/benjames171)\ **Post date:** [June 17, 2019, 6:16pm UTC](https://forum.defold.com/t/tile-source-collision-shapes-solved/55193/2 "2019-06-17T18:16:16Z")
Make sure you create a collision group first and ensure it’s selected. Also, the colours of the outlines vary and are sometimes difficult to distinguish from white. ---
**Author:** ![t.ragel95](https://forum-defold.b-cdn.net/letter_avatar_proxy/v4/letter/t/258eb7/32.png) [@t.ragel95](https://forum.defold.com/u/t.ragel95)\ **Post date:** [June 17, 2019, 6:29pm UTC](https://forum.defold.com/t/tile-source-collision-shapes-solved/55193/3 "2019-06-17T18:29:00Z")
``` ![2019-06-17-202816_1920x1080_scrot|690x388](upload://2DiggLUe028lTxZD8czpmy0QaRr.png) ``` I added new collision groups and still see no difference when I click on the tiles. What could I possibly do wrong? ---
**Author:** ![benjames171](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/benjames171/32/34759_2.png) [@benjames171](https://forum.defold.com/u/benjames171)\ **Post date:** [June 17, 2019, 6:41pm UTC](https://forum.defold.com/t/tile-source-collision-shapes-solved/55193/4 "2019-06-17T18:41:28Z")
Have you selected the collision shape for the tile source? (usually same as the graphic) ![shape](https://forum-defold-uploads.b-cdn.net/original/3X/4/c/4cb3195b63dbb9a7afd4c90f47751c665f3e94e7.png) ---
**Author:** ![britzl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/britzl/32/23_2.png) [@britzl](https://forum.defold.com/u/britzl)\ **Post date:** [June 17, 2019, 8:44pm UTC](https://forum.defold.com/t/tile-source-collision-shapes-solved/55193/5 "2019-06-17T20:44:02Z")
> [@benjames171](#): > > Have you selected the collision shape for the tile source? (usually same as the graphic) It’s very likely that this is what’s wrong. Please confirm if this is the case @t.ragel95! ---
**Author:** ![t.ragel95](https://forum-defold.b-cdn.net/letter_avatar_proxy/v4/letter/t/258eb7/32.png) [@t.ragel95](https://forum.defold.com/u/t.ragel95)\ **Post date:** [June 17, 2019, 10:54pm UTC](https://forum.defold.com/t/tile-source-collision-shapes-solved/55193/6 "2019-06-17T22:54:12Z")
Yes, I have. To be sure I removed it and put it again, blank borders appear. * * * While writing this message, I decided to close and reopen the file and now it’s working fine for some reason. I’ve been trying to reproduce the same problem and I figured it out, when I use CTRL + mouse, it rotates the tiles and I become unable to click on tiles, the only solution, to my knowledge, is to close and reopen the file. Thank you very much. I’m new and I don’t know how to put this thread as solved, do I only have to edit the title ? ---
**Author:** ![britzl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/britzl/32/23_2.png) [@britzl](https://forum.defold.com/u/britzl)\ **Post date:** [June 18, 2019, 3:37am UTC](https://forum.defold.com/t/tile-source-collision-shapes-solved/55193/7 "2019-06-18T03:37:36Z")
> [@t.ragel95](#): > > do I only have to edit the title ? Yes