From 8323707d3a2945f8fbd4d4e925a04d1eb6f0a3b7 Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Sat, 11 Nov 2023 14:14:30 -0600
Subject: prevent movement when frozen and allow seeing past the lattice edge

---
 src/simulation/senses.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/simulation/senses.js')

diff --git a/src/simulation/senses.js b/src/simulation/senses.js
index d3e7c1e..9cc6c41 100644
--- a/src/simulation/senses.js
+++ b/src/simulation/senses.js
@@ -99,8 +99,9 @@ function vision_idx_to_world_pos(world, agent, idx) {
 function see_cell(world, x, y) {
   const team = 0;
   const orientation = 0;
-  if (!world.lattice[y][x]) {
-    throw new Error(`${x}, ${y}`);
+  if (!world.lattice[y] || !world.lattice[y][x]) {
+    // beyond the map edge
+    return [ 0, 0, 0 ];
   }
   const type = {
     active:   -0.8,
-- 
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