As an old Flash dev I'm slightly confused about how you position game objects on the screen in Unity since game objects have no width or height (only a scale).
Let's say I have a container
gameobject that has several child game objects with sprite renderers representing tiles on them. If I set the container to x0, y0, the whole tile layout will extend from the screen center upwards and to the right.
What are the commonly used ways to position the game object so that it would be centered on the screen? I could calculate the width/height of my container but that would still not be very useful because the x/y coordinates work in a different scale than pixel (right?). E.g. my test screen is 640x1024 and to center my container (while running in the editor) I'd have to set x/y to -4.5. How does that make any sense?
Of course Unity's UI system would be a solution but I don't want to create the playfield with the UI system.