fix(rules): bursts cannot affect creatures in total cover from the point of origin (SRD aiming-a-spell.md: a burst "can't affect creatures with total cover from its point of origin (in other words, its effects don't extend around corners)"; Line of Effect: a burst affects only what it has LoE to from its origin) - _area_creatures skips creatures whose occupied cells have no line of effect from the burst center

src/pf1e_simulator/areas.py

@@ -29,7 +29,8 @@ PF1e (CRB, Magic — Aiming a Spell):
   wall between them shields everything behind it).
 
 Bursts need no template here: they are circles around a center cell and are
-resolved by ``CombatEngine._creatures_in_range`` (unchanged).
+resolved by ``CombatEngine._area_creatures`` (which additionally drops
+creatures without line of effect from the burst's center).
 """
 
 from __future__ import annotations

src/pf1e_simulator/combat.py

@@ -7116,8 +7116,13 @@ class CombatEngine:
     ) -> list[CombatantState]:
         """Creatures intersecting the template of an area effect.
 
-        Burst: circle of ``radius_ft`` around the resolved center ``aim``
-        (unchanged behaviour). Cone/line: the template originates at the
+        Burst: circle of ``radius_ft`` around the resolved center ``aim``,
+        minus every creature that has no line of effect from that center
+        (PF1e CRB "Aiming a Spell" — Burst: a burst "can't affect creatures
+        with total cover from its point of origin (in other words, its
+        effects don't extend around corners)"; CRB "Line of Effect": a burst
+        "affects only an area, creature, or object to which it has line of
+        effect from its origin"). Cone/line: the template originates at the
         caster's anchor cell and opens toward ``aim`` (PF1e CRB "Aiming a
         Spell" — see ``areas.py``); a creature is affected when ANY of its
         occupied cells lies inside the template.
@@ -7129,7 +7134,13 @@ class CombatEngine:
         """
         span_cells = effect.radius_ft // _SQUARE_FT
         if effect.shape == "burst":
-            affected = self._creatures_in_range(aim, span_cells)
+            affected = [
+                state
+                for state in self._creatures_in_range(aim, span_cells)
+                if has_line_of_effect_cells(
+                    self._grid, frozenset({aim}), state.occupied_cells()
+                )
+            ]
         else:
             origin = caster.pos
             if effect.shape == "cone":