maze generator

projects/maze_generation/cells.js

@@ -0,0 +1,68 @@
+function Cell(i, j) {
+  this.i = i;
+  this.j = j;
+  this.walls = [true, true, true, true];
+  this.visited = false;
+
+  this.checkNeighbors = function() {
+    var neighbors = [];
+
+    var top    = grid[index(i, j -1)];
+    var right  = grid[index(i+1, j)];
+    var bottom = grid[index(i, j+1)];
+    var left   = grid[index(i-1, j)];
+
+    if (top && !top.visited) {
+      neighbors.push(top);
+    }
+    if (right && !right.visited) {
+      neighbors.push(right);
+    }
+    if (bottom && !bottom.visited) {
+      neighbors.push(bottom);
+    }
+    if (left && !left.visited) {
+      neighbors.push(left);
+    }
+
+    if (neighbors.length > 0) {
+      var r = floor(random(0, neighbors.length));
+      return neighbors[r];
+    } else {
+      return undefined;
+    }
+
+
+  }
+  this.highlight = function() {
+    var x = this.i*w;
+    var y = this.j*w;
+    noStroke();
+    fill(252, 106, 2, 100);
+    rect(x, y, w, w);
+  }
+
+  this.show = function() {
+    var x = this.i*w;
+    var y = this.j*w;
+    stroke(0);
+    if (this.walls[0]) {
+      line(x    , y    , x + w, y);
+    }
+    if (this.walls[1]) {
+      line(x + w, y    , x + w, y + w);
+    }
+    if (this.walls[2]) {
+      line(x + w, y + w, x    , y + w);
+    }
+    if (this.walls[3]) {
+      line(x    , y + w, x    , y);
+    }
+
+    if (this.visited) {
+      noStroke();
+      fill(242, 255, 28, 125);
+      rect(x, y, w, w);
+    }
+  }
+}