[2.0.23] entity_prototype_collides returns true but shouldnt

[Natha]

I check a resource (only resource collision layer) against a cliff (not in resource collision layer) which should return false, but it returns true.
Am I missing something here?

[Zaflis]

They are likely going to need to see your source code. It takes time even for them to go through API's and figure out steps you are trying to do, of which you could have made typos too.

[Natha]

I check a resource (only resource collision layer) against a cliff (not in resource collision layer) which should return false, but it returns true.
Am I missing something here?

There is no more information in the code:

Code: Select all

surface.entity_prototype_collides("iron-ore", cliff.position)

[boskid]

Cannot reproduce.

12-11-2024, 13-48-01.png (183.92 KiB) Viewed 383 times

[Natha]

I figured out that it happens on tiles adjacent to out-of-map, independent if there are any other entities:

grafik.png (243.33 KiB) Viewed 354 times

Code: Select all

for _, pos in ipairs(area_positions) do -- radius of 3 around the player; proto=copper-ore
	if surface.entity_prototype_collides(proto, pos, false) and surface.get_tile(pos[1], pos[2]).name ~= "out-of-map" then
		rendering.draw_circle{color={0, 0, 1}, radius=0.3, filled=true, target={pos[1]+0.5, pos[2]+0.5}, surface=surface, time_to_live=600}
	end
end

[boskid]

Try drawing the circles at the same position as the one given to the function and you will notice those positions are on the outside corners next to out of map tiles. Moving to not a bug.

[Natha]

Thanks, didnt think about that...
But then: Is there a function that shows me how an entity prototype aligns with the tile grid, or do I have to evaluate that for myself? (2x2 entities are placed on that position without moving by [0.5, 0.5])