From 925b3aabaa95a4a9693079f8d434ee137e0fa580 Mon Sep 17 00:00:00 2001
From: Pabloader <pabloader@pabloader.ru>
Date: Mon, 4 May 2026 18:16:33 +0000
Subject: [PATCH] Obstacle is visible in the fov circles

---
 src/common/navigation/bresenham.ts |  4 ++--
 src/common/navigation/fov.ts       | 10 ++++------
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/src/common/navigation/bresenham.ts b/src/common/navigation/bresenham.ts
index a53a586..aaf796a 100644
--- a/src/common/navigation/bresenham.ts
+++ b/src/common/navigation/bresenham.ts
@@ -263,7 +263,7 @@ export const bresenhamLine = (
  * to that point and yields every cell along the ray. You can pass `breaker` 
  * to signal an obstacle — the rest of that ray is then
  * skipped and the next outline point's ray begins. The obstacle cell itself
- * is not yielded (obstacle is hidden).
+ * is yielded (obstacle is visible).
  *
  * **Bounds:** The outline is always generated without clipping so that rays
  * extend to the full circle perimeter. The individual rays are clipped to
@@ -299,8 +299,8 @@ export function* bresenhamCircleGen(
         };
         for (const { x: ox, y: oy } of bresenhamCircleGen(x, y, r, { fill: false })) {
             for (const linePoint of bresenhamLineGen(x, y, ox, oy, lineBounds)) {
-                if (options?.breaker?.(linePoint.x, linePoint.y)) break;
                 yield linePoint;
+                if (options?.breaker?.(linePoint.x, linePoint.y)) break;
             }
         }
         return;
diff --git a/src/common/navigation/fov.ts b/src/common/navigation/fov.ts
index e8b47b2..4cef193 100644
--- a/src/common/navigation/fov.ts
+++ b/src/common/navigation/fov.ts
@@ -10,11 +10,9 @@ export function* shadowCast(
     const seen = new Set<string>();
     const keyOf = (px: number, py: number) => `${px},${py}`;
 
-    // Yield the source tile itself if it is not blocked.
-    if (!breaker(x, y)) {
-        seen.add(keyOf(x, y));
-        yield { x, y };
-    }
+    seen.add(keyOf(x, y));
+    yield { x, y };
+    if (breaker(x, y)) return;
 
     type Frame = {
         octant: number;
@@ -68,7 +66,7 @@ export function* shadowCast(
 
                 const opaque = breaker(mapX, mapY);
 
-                if (dx * dx + dy * dy <= radiusSq && !opaque) {
+                if (dx * dx + dy * dy <= radiusSq) {
                     const key = keyOf(mapX, mapY);
                     if (!seen.has(key)) {
                         seen.add(key);