diff --git a/game/traps.py b/game/traps.py
index badbf06..55fdcba 100644
--- a/game/traps.py
+++ b/game/traps.py
@@ -67,11 +67,13 @@ class _Directional:
     range:   cap the distance in that direction (tiles); omit = anywhere.
     aligned: also require overlap on the perpendicular axis, i.e. *directly*
              left/right (same rows) or *directly* above/below (same columns).
+    inclusive: specify if the trap tile itself counts in the given direction.
     """
-    def __init__(self, direction, rng, aligned):
+    def __init__(self, direction, rng, aligned, inclusive):
         self.dir = direction
         self.rng = None if rng is None else float(rng)
         self.aligned = bool(aligned)
+        self.inclusive = bool(inclusive)
 
     def evaluate(self, trap, game, dt):
         r = trap.sensor_rect()
@@ -81,24 +83,28 @@ class _Directional:
             if self.aligned and not (p.bottom > r.top and p.top < r.bottom):
                 return False
             if d == "left":
-                if p.centerx >= r.left:
+                ref = r.right if self.inclusive else r.right
+                if p.centerx >= ref:
                     return False
-                dist = r.left - p.centerx
+                dist = ref - p.centerx
             else:
-                if p.centerx <= r.right:
+                ref = r.left if self.inclusive else r.right
+                if p.centerx <= ref:
                     return False
-                dist = p.centerx - r.right
+                dist = p.centerx - ref
         else:  # above / below
             if self.aligned and not (p.right > r.left and p.left < r.right):
                 return False
             if d == "above":
-                if p.centery >= r.top:
+                ref = r.bottom if self.inclusive else r.top
+                if p.centery >= ref:
                     return False
                 dist = r.top - p.centery
             else:
-                if p.centery <= r.bottom:
+                ref = r.top if self.inclusive else r.bottom
+                if p.centery <= ref:
                     return False
-                dist = p.centery - r.bottom
+                dist = p.centery - ref
         return self.rng is None or dist <= self.rng * trap.tile
 
     def reset(self):
@@ -160,7 +166,7 @@ def make_condition(spec):
     if "within" in spec:
         return _Within(spec["within"])
     if "dir" in spec:
-        return _Directional(spec["dir"], spec.get("range"), spec.get("aligned", False))
+        return _Directional(spec["dir"], spec.get("range"), spec.get("aligned", False), spec.get("inclusive", False))
     raise ValueError(f"unrecognized trigger condition: {spec!r}")