The attached photo is a side view. Unit A is looking at unit B from a rooftop. Both are standing. The diagonal line shows the LoF between them. Hopefully it's clear that B can only see the top part of A's silhouette. Q: Does A have partial cover from B? (A) Yes, because A is in base-to-base contact with a scenery item (the rooftop) which blocks LoF to more than 30% of A's silhouette. (B) No, base-to-base contact means the edge of the base must be touching a piece of cover. It doesn't apply to the bottom of the base resting on a rooftop. (C) Something else I'm missing?
B but C. The partial cover and LoF rules for infinity are poorly written (RAW). This doesn’t matter because no one cares about RAW. Before each game, you have to go through each piece of terrain and decide how its partial cover and LoF rules work. Below is a short list of relevant questions; - Does the game use “play-by-intent”? What kind of intents and agreements aren’t allowed by “play-by-intent”? What happens if an intent is later found out to be illegal? Example: A more careful study finds out that there is fact a LoF available. - Are official LoF rules used or can a laser pointer be used to establish LoF? - Can model combine multiple pieces of terrain to meet partial cover requirements? - Does a corner always break a palisade terrain piece in regards to partial cover? - Is a 2nd floor palisade a separate terrain piece or a part of a larger terrain piece? - Is there a maximum length for a terrain piece that model claim partial cover from? Example: Model touches a 20” long palisade.
The terrain area your model can stand on is never treated as scenery elsewhere in the rules and the HVT rules go out of their ways to prevent placement on objects, so just connecting the dots and you should never be able to claim cover from something you stand on.
Except (IE this is an EXCEPTION to normal) if you have C+ and a DA CCW and want to cut a hole into the roof, because that's perfectly ok. * * If you're playing with destructible terrain rules