From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 7 Mar 2021 22:44:34 +0000 (+0000)
Subject: hidden: do not occult pieces which aren't can_occultable
X-Git-Tag: otter-0.4.0~202
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=09f92b59b8263e2b656cbcfbed24eee2bb36b10b;p=otter.git

hidden: do not occult pieces which aren't can_occultable

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/src/hidden.rs b/src/hidden.rs
index 037c3580..98563547 100644
--- a/src/hidden.rs
+++ b/src/hidden.rs
@@ -583,6 +583,10 @@ fn recalculate_occultation_general<
             // prevent occulting pieces being occulted
             // (also prevents reflexive occultation)
             return None
+          } else if ipc.occultable().is_none() {
+            // if we cannot make it look identical to the others, we
+            // cannot occult it beause we can't hide its identity
+            return None
           } else if occ.in_region(gpc.pos) {
             Some(Occulted { occid, occ })
           } else {