New source found from dndbeyond.com

ddb_main/packages/rules-engine/es/engine/Snippet/utils.js

@@ -2,6 +2,7 @@ import { isFinite, toNumber } from 'lodash';
 import { TypeScriptUtils } from '../../utils';
 import { AbilityAccessors } from '../Ability';
 import { CharacterDerivers } from '../Character';
+import { SpeedMovementKeyEnum } from '../Core';
 import { DiceRenderers } from '../Dice';
 import { FormatUtils } from '../Format';
 import { LimitedUseDerivers } from '../LimitedUse';
@@ -90,6 +91,7 @@ export function isSnippetPostProcessTypeEnum(key) {
  */
 export function isSnippetTagValueTypeEnum(key) {
     switch (key) {
+        case SnippetTagValueTypeEnum.SPEED:
         case SnippetTagValueTypeEnum.SCALE_VALUE:
         case SnippetTagValueTypeEnum.LIMITED_USE:
         case SnippetTagValueTypeEnum.CLASS_LEVEL:
@@ -107,6 +109,23 @@ export function isSnippetTagValueTypeEnum(key) {
     }
     return false;
 }
+/**
+ *
+ * @param type
+ */
+export function isSnippetSpeedMovementKeyEnum(key) {
+    switch (key) {
+        case SpeedMovementKeyEnum.WALK:
+        case SpeedMovementKeyEnum.FLY:
+        case SpeedMovementKeyEnum.BURROW:
+        case SpeedMovementKeyEnum.SWIM:
+        case SpeedMovementKeyEnum.CLIMB:
+            return true;
+        default:
+        // not implemented
+    }
+    return false;
+}
 /**
  *
  * @param type
@@ -207,6 +226,7 @@ export function throwInvalidSnippetCharacters(str) {
     keywordMatches === null || keywordMatches === void 0 ? void 0 : keywordMatches.forEach((keyword) => {
         if (isSnippetTagValueTypeEnum(keyword) ||
             isSnippetAbilityKeyEnum(keyword) ||
+            isSnippetSpeedMovementKeyEnum(keyword) ||
             isSnippetValueModifierTypeEnum(keyword) ||
             isSnippetPostProcessTypeEnum(keyword)) {
             return;
@@ -323,9 +343,21 @@ export function deriveStringTagValue(tagValue, contextData) {
  * @param proficiencyBonus
  */
 export function deriveNumericTagValue(tagValue, contextData, snippetData, proficiencyBonus) {
+    var _a;
     const { type, params } = tagValue;
     let value = 0;
     switch (type) {
+        case SnippetTagValueTypeEnum.SPEED: {
+            const movementType = (_a = params[0]) !== null && _a !== void 0 ? _a : SpeedMovementKeyEnum.WALK;
+            if (!isSnippetSpeedMovementKeyEnum(movementType)) {
+                throw new Error(`Invalid speed type: ${movementType}`);
+            }
+            const speed = snippetData.speedInfo[movementType];
+            if (speed === null) {
+                throw new Error(`No speed data available for ${movementType}`);
+            }
+            return speed;
+        }
         case SnippetTagValueTypeEnum.SAVE_DC:
             if (params.length < 1) {
                 throw new Error('Save DC missing ability key');