vec.elem prevents NaN calc and charToTile uses .map

It used to return [], which caused some major calculation issues in
tools/search

1 files changed, 4 insertions, 1 deletions

diff --git a/utils/vec.js b/utils/vec.js
index 57104df..4e65abd 100644
--- a/utils/vec.js
+++ b/utils/vec.js
@@ -7,6 +7,9 @@ exports.mult = function(vec, scal){
 }
 
 exports.elem = function(orig, vec, op){
+  if (orig.length > vec.length) throw "Vector length mismatch";
+  if (orig.length && isNaN(orig[0])) throw "orig vec has a NaN";
+  if (vec.length && isNaN(vec[0])) throw "new vec has a NaN";
   let comb = [];
   for (let i = 0; i < orig.length; i++){
     comb.push(op(vec[i],orig[i]));
@@ -34,7 +37,7 @@ exports.tileToChar = function(orig){
   return exports.dot(orig, [8,16]);
 }
 exports.charToTile = function(orig){
-  return exports.elem(exports.dot(orig, [1/8, 1/16]), [], a => Math.floor(a));
+  return exports.dot(orig, [1/8, 1/16]).map(a => Math.floor(a));
 }
 exports.norm = function(orig){
   let sum = orig.reduce( (acc, cur) => acc+cur );