[libgdx] Orthographic camera and world units

Newbie & Debugging Questions
#1

I wrote a small game in libGDX without using the orthographic camera.

I made my own camera which didn’t actually handle transformations at all (each entity visually offsets by the camera position). I look back at this and I realize how stupid it was. So I began to read the wiki’s documentation on the orthographic camera. I have a question.

The wiki uses a method in Sprite called setSize. The example set the size to 100x100 world units for a 1024x1024 texture. If I had a world made of blocks, and each block, for example, would be 64x64 pixels, if I set the size of a block’s sprite to 1x1, then set my camera viewport size to be 30x30, would this still render 30x30 blocks or 30x30 pixels?

Thank you!

#2

Well, essentially you are just rendering pixels, just scaled. You’re basically making your size = to 1 pixel.
I don’t really use gdx sprites though, so I may be wrong.

In case you aren’t sure how to scale the orthographic camera, you can do so when or after initializing it.
camera.setToOrtho(false, viewport_w, viewport_h); I’ve been using 15f and 9f for my games.

:slight_smile:

#3

Thank you for clarifying a bit @syszee! I’ll probably use a separate camera for world rendering and a main one for everything else.

#4

@chrislo27 I generally have a camera for world rendering, including players, enemies, items, etc - and a separate one for HUD related things. :slight_smile: