Lighting now uses pathing to determine where it can go, but _distance_ to determin strength. Looks way better.

matrix.cpp

@@ -53,9 +53,11 @@ namespace matrix {
     return at_end(y, height);
   }
 
-  in_box::in_box(Matrix &mat, size_t from_x, size_t from_y, size_t size) {
-    size_t h = mat.size();
-    size_t w = mat[0].size();
+  in_box::in_box(Matrix &mat, size_t at_x, size_t at_y, size_t size) :
+    from_x(at_x), from_y(at_y)
+  {
+    size_t h = matrix::height(mat);
+    size_t w = matrix::width(mat);
 
     // keeps it from going below zero
     // need extra -1 to compensate for the first next()
@@ -78,9 +80,17 @@ namespace matrix {
     // if x==0 then this moves it to min_x
     x = max(x, left);
     // and done
+
     return at_end(y, bottom);
   }
 
+  float in_box::distance() {
+    int dx = from_x - x;
+    int dy = from_y - y;
+
+    return sqrt((dx * dx) + (dy * dy));
+  }
+
   void in_box::dump() {
     println("BOX: x={},y={}; left={},right={}; top={},bottom={}",
         x, y, left, right, top, bottom);