Problems with collisions

Questions
1

2 gameobjects, with a sprite and a box collision object, I create a bigger box than the sprite for testing, the gameobject A goes to B, but dont get a message until they are into the other. Then I try putting the box , above the sprite, same behaviour,(the normal would be, not collision)
whats happening?

edit: the problem is that the box collider has diferent size in editor and in runtime…

how can I use the collision shape of the tilesource of the sprite?

2

Yes there is a discrepancy between editor and runtime if you don’t scale uniformly. The runtime only does uniform scaling (using the smallest of x, y, z scale) while editor shows non-uniform scaling. We are bringing this issue into our next sprint (starting on Monday) to make sure that the editor shows the same as the engine.

A tilesource doesn’t have a collision shape. Tilemaps does however trace collision shapes based on the actual pixel data. If you want collisions for a sprite when using a tilesource you need to add a collision component and some shapes that roughly covers the pixels of the sprite.

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3

then what is the property collision for?

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4

Oh, crap sorry, I’m confused. Assign the same image as the tilesource and it will be used as collision shape.

Next step is to add a collision object to your game object and use the tilesource as shape.

5

thats the point, when Im adding the collision object, in the property collision shape, only accept a tilemap, not the tilesource (for exameple , the previous spritesheet, with the collisions)…

6

It works like this:

Tilesource

  • This is a resource consisting of multiple images of the same size, laid out in a grid.
    • You can create animations, playing a range of images from the tilesource in sequence
    • You can create collision groups and “paint” tiles in the tilesource to belong to a group
  • A tilesource can be used as the input for a sprite, particlefx or a tilemap.

Tilemap

  • A tilemap needs a tilesource as input. Paint your tiles from the tilesource into one or more layers.
  • You can use a tilemap as a collision shape. This is typically how you deal with collisions for a level created using a tilemap

Sprite

  • A sprite needs either an atlas or a tilesource as input.
  • You can NOT use the tilesource as a collision shape. If you want to define a collision shape for a sprite you do this by adding a collision component and box and sphere shapes.
7 Likes
7

ok, its clear now, thank you very much as always.

1 Like