Began implementing dice rolls in the maths parser

app/imports/api/creature/computation/afterComputation/substituteRollsWithFunctions.js

@@ -0,0 +1,20 @@
+import math from '/imports/math.js';
+
+const diceRegex = /d\d+/;
+
+export default function substituteRollsWithFunctions(node){
+  // TODO also replace dx as 1dx
+  if (
+    node.isOperatorNode &&
+    node.fn === 'multiply' &&
+    node.implicit &&
+    node.args[1].isSymbolNode &&
+    diceRegex.test(node.args[1].name)
+  ){
+    let diceSize = node.args[1].name.slice(1);
+    let diceSizeNode = new math.ConstantNode(diceSize);
+    return new math.FunctionNode('roll', [node.args[0], diceSizeNode]);
+  } else {
+    return node;
+  }
+}