From fc2e409bc4eefe6527ae363acbc534b30a8b833f Mon Sep 17 00:00:00 2001
From: nakednous <nakednous@gmail.com>
Date: Wed, 26 Jul 2023 10:10:24 -0500
Subject: [PATCH] v 1.3.4

---
 demo/sketch.js  | 1 +
 p5.quadrille.js | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/demo/sketch.js b/demo/sketch.js
index acc6670..95b907f 100644
--- a/demo/sketch.js
+++ b/demo/sketch.js
@@ -39,6 +39,7 @@ function setup() {
   s3 = '?'
   // quadrilles
   board = createQuadrille(COLS, ROWS);
+  console.log(board.isFilled(-1, 0));
   quadrille = active(int(random(8)));
   // current position
   col = int(random(0, COLS - 4));
diff --git a/p5.quadrille.js b/p5.quadrille.js
index 15c9fb5..5345851 100644
--- a/p5.quadrille.js
+++ b/p5.quadrille.js
@@ -138,7 +138,7 @@ class Quadrille {
     // ii. fill result with passed quadrilles
     for (let i = 0; i < quadrille.height; i++) {
       for (let j = 0; j < quadrille.width; j++) {
-        let result = operator(quadrille1.read(row < 0 ? i + row : i, col < 0 ? j + col : j), quadrille2.read(row > 0 ? i - row : i, col > 0 ? j - col : j));
+        let result = operator(quadrille1.read(row < 0 ? i + row : i, col < 0 ? j + col : j, false), quadrille2.read(row > 0 ? i - row : i, col > 0 ? j - col : j, false));
         if (result !== undefined) {
           quadrille._memory2D[i][j] = result;
         }
@@ -672,10 +672,13 @@ class Quadrille {
    * @param {number} col 
    * @returns {p5.Image | p5.Graphics | p5.Color | Array | object | string | number} quadrille entry or undefined id (row, col) is out of bounds
    */
-  read(row, col) {
+  read(row, col, warn = true) {
     if (row >= 0 && row < this.height && col >= 0 && col < this.width) {
       return this._memory2D[row][col];
     }
+    else if (warn) {
+      console.warn(`undefined cell @(${row}, ${col}) which is out of bounds ([0..${this.height}], [0..${this.width}])`);
+    }
   }
 
   /**