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module/canvas.js

@@ -0,0 +1,46 @@
+/**
+ * Measure the distance between two pixel coordinates
+ * See BaseGrid.measureDistance for more details
+ *
+ * @param {Object} p0           The origin coordinate {x, y}
+ * @param {Object} p1           The destination coordinate {x, y}
+ * @param {boolean} gridSpaces  Enforce grid distance (if true) vs. direct point-to-point (if false)
+ * @return {number}             The distance between p1 and p0
+ */
+export const measureDistance = function(p0, p1, {gridSpaces=true}={}) {
+  if ( !gridSpaces ) return BaseGrid.prototype.measureDistance.bind(this)(p0, p1, {gridSpaces});
+  let gs = canvas.dimensions.size,
+      ray = new Ray(p0, p1),
+      nx = Math.abs(Math.ceil(ray.dx / gs)),
+      ny = Math.abs(Math.ceil(ray.dy / gs));
+
+  // Get the number of straight and diagonal moves
+  let nDiagonal = Math.min(nx, ny),
+      nStraight = Math.abs(ny - nx);
+
+  // Alternative DMG Movement
+  if ( this.parent.diagonalRule === "5105" ) {
+    let nd10 = Math.floor(nDiagonal / 2);
+    let spaces = (nd10 * 2) + (nDiagonal - nd10) + nStraight;
+    return spaces * canvas.dimensions.distance;
+  }
+
+  // Standard PHB Movement
+  else return (nStraight + nDiagonal) * canvas.scene.data.gridDistance;
+};
+
+/* -------------------------------------------- */
+
+/**
+ * Hijack Token health bar rendering to include temporary and temp-max health in the bar display
+ * TODO: This should probably be replaced with a formal Token class extension
+ */
+const _TokenGetBarAttribute = Token.prototype.getBarAttribute;
+export const getBarAttribute = function(...args) {
+  const data = _TokenGetBarAttribute.bind(this)(...args);
+  if ( data && (data.attribute === "attributes.hp") ) {
+    data.value += parseInt(data['temp'] || 0);
+    data.max += parseInt(data['tempmax'] || 0);
+  }
+  return data;
+};