Indicators

[thombruce]

closes #29

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Internal use. Do not delete.

• Tests passing
• Coverage sufficient
• Manual review
• No A11y regression
• Translations provided or not needed

[thombruce]

Current issues:

• There's only one indicator - generalise for all objects in space
• Indicators stutters when X distance from object is zero¹ (probably Y too)

Footnotes

1. There are a few potential causes for this. We're using > rather than >=, which is easily amended. We're using max to compare two numbers, which appears to work only with integers? I see in the source for it that it just implements .max() which does work with floats, so I am swapping for that now. Lastly, we're sort of swapping coordinate systems at roughly 0 from a right of screen approach to a left of screen approach (absolute positioning, like CSS). ↩

[thombruce]

Indicator still stutters after c90950b but the effect is less noticeable.

The > comparator does not matter, of course, since it will just return true or false - both accounted for. So the issue is with swapping from left-based to right-based positioning? Seems so...

Still, it is very, very good enough for now. Let's move on to generalising and putting more indicators on screen.

[thombruce]

Also looking for a way to colorise the indicator. CSS has a filter attribute but this doesn't seem to be implemented in Bevy. Some other way to do this?

[thombruce]

There is another issue with indicators. I now have two, and the one for the star appears accurate but the planetary indicator is pointing in the wrong direction at short distances...

It is as if the planet is on the visible rim of the star according to the indicator. (This might also account for why I couldn't find the star in #37 - maybe it was visible with some of my tweaks but was not where I thought it ought to be).

This isn't a major issue - when the planet and star are off screen, they appear accurate enough.