[Feature] ComboDice Modifier (#2061)

lang/en.json

@@ -3289,6 +3289,7 @@
                 "lackingItemTransferPermission": "User {user} lacks owner permission needed to transfer items to {target}",
                 "noTokenTargeted": "No token is targeted",
                 "behaviorRegionRequiresGM": "Creating a Region with an attached Behavior requires an online GM",
+                "comboDiceOnlyTwoDiceError": "Combo dice functionality only works on a single pair of two dice",
                 "reloadRequired": "The {weapon} must be reloaded to be used!"
             },
             "Progress": {

module/dice/_module.mjs

@@ -4,4 +4,5 @@ export { default as DamageRoll } from './damageRoll.mjs';
 export { default as DHRoll } from './dhRoll.mjs';
 export { default as DualityRoll } from './dualityRoll.mjs';
 export { default as FateRoll } from './fateRoll.mjs';
+export { BaseDie } from './die/_module.mjs';
 export { diceTypes } from './die/_module.mjs';

module/dice/die/baseDie.mjs

@@ -1,5 +1,14 @@
+import { adjustDice, triggerChatRollFx } from '../../helpers/utils.mjs';
+
 export default class BaseDie extends foundry.dice.terms.Die {
-    async rerollResult(resultIndex) {
+    static MODIFIERS = {
+        ...foundry.dice.terms.Die.MODIFIERS,
+        cc: 'compoundComboDice',
+        c: 'comboDice'
+    };
+
+    async rerollResult(resultToReroll) {
+        const resultIndex = Number(resultToReroll);
         const result = this.results[resultIndex];
         result.rerolled = true;
         result.active = false;
@@ -8,5 +17,174 @@ export default class BaseDie extends foundry.dice.terms.Die {
         const rerolledResult = this.results[this.results.length - 1];
         this.results.splice(this.results.length - 1, 1);
         this.results.splice(resultIndex, 0, rerolledResult);
+
+        if (['c', 'cc'].some(x => this.modifiers.includes(x))) {
+            await this.handleComboDiceReroll(resultIndex, result);
+        } 
+    }
+
+    /** @inheritDoc */
+    getResultCSS(result) {
+        // Accomodating ComboDie as a result can have a different denomination than the die as a whole
+        const css = super.getResultCSS(result);
+        const idx = css.findIndex(c => /d\d+/.test(c));
+        css[idx] = result.denomination ?? this.denomination;
+        return css;
+    }
+
+    /* -------------------------------------------- */
+    /*  Modifier Logic                              */
+    /* -------------------------------------------- */
+
+    async compoundComboDice() {
+        return this.handleComboDice({ maxIncreasesDiceSize: true});
+    }
+
+    async comboDice() {
+        return this.handleComboDice({ maxIncreasesDiceSize: false });
+    }
+
+    async handleComboDice(maxIncreasesDiceSize) {
+        /* ComboDice only works with exactly two dice and both have to be the same denomination */
+        if (this.number !== 2) {
+            ui.notifications.warn(game.i18n.localize('DAGGERHEART.UI.Notifications.comboDiceOnlyTwoDiceError'));
+            return false;
+        }
+
+        return this.rollComboDice(maxIncreasesDiceSize);
+    }
+
+    async rollComboDice(options) {
+        const { maxIncreasesDiceSize, rerollStartIndex } = options;
+        const initialResultsLength = this.results.filter(x => x.active).length;
+        const result = await this.continueCombo(maxIncreasesDiceSize);
+
+        /* The flow of DiceSoNice has no way of knowing that some of the results of a Die should be a different denomination 
+           We solve this by marking the results as hidden so they're not picked up by the auto roll of DiceSoNice.
+           The actual rolls are done here in place so every dice gets the correct denomination.
+        */
+        if (game.modules.get('dice-so-nice')?.active) {
+            const resultsToRoll = this.results.filter((x, index) => 
+                x.active && (!rerollStartIndex || index === rerollStartIndex || index > initialResultsLength - 1));
+            const rolls = [];
+            for (const result of resultsToRoll) {
+                const roll = await (new Roll(`1${result.denomination ?? this.denomination}`)).evaluate();
+                roll.terms[0].results = [result];
+                roll._evaluateTotal();
+                rolls.push(roll);
+            }
+
+            /* If there are other dice that will be rolled we cannot await here. The other dice will be awaited in the normal flow */
+            const promises = rolls.map(roll => game.dice3d.showForRoll(roll, game.user, true));
+            if (rerollStartIndex !== undefined || this._root.dice.length <= 1) {
+                await Promise.allSettled(promises);
+            }
+        }
+
+        for (const result of this.results)
+            result.hidden = true;
+
+        const modifier = maxIncreasesDiceSize ? 'cc' : 'c';
+        if (!this.modifiers.includes(modifier))
+            this.modifiers.push(modifier);
+
+        return result;
+    }
+
+    async continueCombo(maxIncreasesDiceSize) {
+        const activeResults = this.results.filter(x => x.active);
+        const lastIndex = activeResults.length - 1;
+        const lastResult = activeResults[lastIndex];
+
+        /* The Combo only continues if the latest roll was higher or equal to the previous */
+        if (lastResult.result < activeResults[lastIndex - 1].result) return false;
+
+        const lastFaces = lastResult.denomination ? 
+            Number(lastResult.denomination.slice(1)) : this.faces;
+        const currentDenomination = `d${lastFaces}`
+        const increaseDiceSize = 
+            maxIncreasesDiceSize && lastFaces < 12 && 
+            lastResult.result === lastFaces;
+
+        const denomination = increaseDiceSize ? adjustDice(currentDenomination, false) : currentDenomination;
+
+        const newRoll = await (new Roll(`1${denomination}`)).evaluate();
+        this.results.push({ result: newRoll.total, denomination: denomination, active: true });
+        this.number += 1;
+
+        return this.continueCombo(maxIncreasesDiceSize);
+    }
+
+    async handleComboDiceReroll(rerolledIndex, originalResult) {
+        /* Potentially sliced when correcting compound dice at (1) */
+        let resultGroupingIndexes = this.results.map((x, index) => ({ index, active: x.active }))
+            .filter(x => x.active).map(x => x.index);
+        if (resultGroupingIndexes.length <= 1) return;
+
+        const rerolledResult = this.results[rerolledIndex];
+        const compoundCombo = this.modifiers.includes('cc');
+        const rerollGroupingIndex = resultGroupingIndexes.indexOf(rerolledIndex);
+
+        const previousIndex = resultGroupingIndexes[rerollGroupingIndex - 1];
+        const previousResult = this.results[previousIndex];
+        const nextIndex = resultGroupingIndexes[rerollGroupingIndex + 1];
+        const nextResult = this.results[nextIndex];
+
+        const dropDice = preceeding => {
+            const cutoffIndex = preceeding ? resultGroupingIndexes[rerollGroupingIndex + 1] + 1 : rerolledIndex + 1;
+            this.results = this.results.slice(0, cutoffIndex);
+            this.number = this.results.filter(x => x.active).length;
+        };
+
+        /* (1) If subsequent size increases from the compound effect are now incorrect, drop subsequent dice */
+        const lastFaces = Number((originalResult.denomination ?? this.denomination).slice(1));
+        if (
+            compoundCombo && 
+            (
+                (originalResult.result === lastFaces && 
+                rerolledResult.result !== lastFaces)
+                ||
+                (originalResult.result !== lastFaces &&
+                rerolledResult.result === lastFaces)
+            )
+        ) {
+            dropDice(false);
+            resultGroupingIndexes = resultGroupingIndexes.slice(0, this.number);
+        }
+
+        /* (2) Rerolling any of the last two dice might introduce new results */
+        const isFinalHigher = 
+            rerollGroupingIndex === resultGroupingIndexes.length - 1 && rerolledResult.result >= previousResult?.result;
+        const isSemifinalLower = 
+            rerollGroupingIndex === resultGroupingIndexes.length - 2 && rerolledResult.result < nextResult?.result;
+        if (isFinalHigher || isSemifinalLower) {
+            return await this.rollComboDice({
+                maxIncreasesDiceSize: compoundCombo,
+                rerollStartIndex: rerollGroupingIndex
+            });
+        }
+        /* (3) Rerolling a subsequent dice might invalidate later dice which should then be dropped */
+        else if (rerolledResult.result < previousResult?.result){
+            dropDice(false);
+        }
+        /* (4) Rerolling a preceeding dice might invalidate later dice which should then be dropped */
+        else if (rerolledResult.result >= nextResult?.result) {
+            dropDice(true);
+        }
+
+        const fakeRollFaces = 
+            rerolledResult.denomination ? rerolledResult.denomination.slice(1) : this.faces;
+        const fakeRoll = {
+            _evaluated: true,
+            dice: [new foundry.dice.terms.Die({
+                ...this,
+                results: [rerolledResult],
+                total: rerolledResult.result,
+                faces: fakeRollFaces
+            })],
+            options: { appearance: {} }
+        };
+        await triggerChatRollFx([fakeRoll]);
+        rerolledResult.hidden = true;
     }
 }

module/dice/die/dualityDie.mjs

@@ -1,5 +1,5 @@
-import BaseDie from './baseDie.mjs';
 import { updateResourcesForDualityReroll } from '../helpers.mjs';
+import BaseDie from './baseDie.mjs';
 
 export default class DualityDie extends BaseDie {
     constructor(options) {

module/helpers/handlebarsHelper.mjs

@@ -4,19 +4,20 @@ export default class RegisterHandlebarsHelpers {
     static registerHelpers() {
         Handlebars.registerHelper({
             add: this.add,
-            includes: this.includes,
+            coalesce: this.coalesce,
-            times: this.times,
             damageFormula: this.damageFormula,
-            formulaValue: this.formulaValue,
             damageSymbols: this.damageSymbols,
-            rollParsed: this.rollParsed,
-            hasProperty: foundry.utils.hasProperty,
-            getProperty: foundry.utils.getProperty,
-            setVar: this.setVar,
             empty: this.empty,
+            formulaValue: this.formulaValue,
+            getProperty: foundry.utils.getProperty,
+            hasProperty: foundry.utils.hasProperty,
+            includes: this.includes,
+            isNullish: this.isNullish,
             pluralize: this.pluralize,
             positive: this.positive,
-            isNullish: this.isNullish
+            rollParsed: this.rollParsed,
+            setVar: this.setVar,
+            times: this.times
         });
     }
     static add(a, b) {
@@ -25,6 +26,10 @@ export default class RegisterHandlebarsHelpers {
         return (Number.isNaN(aNum) ? 0 : aNum) + (Number.isNaN(bNum) ? 0 : bNum);
     }
 
+    static coalesce(...args) {
+        return args.find(a => a !== undefined && a !== null);
+    }
+
     static includes(list, item) {
         return list.includes(item);
     }

templates/ui/chat/parts/damage-part.hbs

@@ -29,7 +29,7 @@
                     {{> damage
                         label=(ifThen ../hasHealing (localize (concat 'DAGGERHEART.CONFIG.HealingType.' index '.name')) (localize (concat 'DAGGERHEART.CONFIG.HealingType.' index '.inChatRoll'))) 
                         roll=roll
-                        isResource=true 
+                        resource=index
                     }}
                 {{/each}}
             </div>
@@ -57,13 +57,13 @@
         {{/if}}
         <div class="roll-dice">
             {{#if roll.dice.length}}
-                {{#each roll.dice}}
+                {{#each roll.dice as |dice diceKey|}}
-                    {{#each results}}
+                    {{#each results as |dieResult resultKey|}}
                         {{#if active}}
                             <div class="roll-die{{#unless @../first}} has-plus{{/unless}}">
                                 <div 
-                                    class="dice reroll-button {{../denomination}}" 
+                                    class="dice reroll-button {{coalesce dieResult.denomination dice.denomination}}" 
-                                    data-type="damage" data-damage-type="{{@../../key}}" data-dice="{{@../key}}" data-result="{{@key}}" {{#if ../../isResource}}data-is-resource="true"{{/if}}
+                                    data-type="damage" data-dice="{{diceKey}}" data-result="{{resultKey}}" {{#if ../../resource}}data-damage-type="{{../../resource}}" data-is-resource="true"{{/if}}
                                 >
                                     {{#if hasRerolls}}<i class="fa-solid fa-dice dice-rerolled" data-tooltip="{{localize "DAGGERHEART.GENERAL.rerolled"}}"></i>{{/if}}
                                     {{result}}

templates/ui/chat/parts/roll-part.hbs

@@ -82,10 +82,14 @@
                                     </div>
                                 {{/each}}
                             {{else}}
-                                {{#each roll.dice}}
+                                {{#each roll.dice as |dice|}}
-                                    {{#each results}}
+                                    {{#each results as |dieResult|}}
                                         <div class="roll-die {{#unless (or @../first discarded)}} has-plus{{/unless}}">
-                                            <div class="dice {{../denomination}}{{#if discarded}} discarded{{else}}{{#if (and @../first ../../roll.advantage.type)}}{{#if (eq ../../roll.advantage.type 1)}} color-adv{{else}} color-dis{{/if}}{{/if}}{{#if success}} color-adv{{/if}}{{/if}}">
+                                            <div class="
+                                                dice 
+                                                {{coalesce dieResult.denomination dice.denomination}}
+                                                {{#if discarded}} discarded{{else}}{{#if (and @../first ../../roll.advantage.type)}}{{#if (eq ../../roll.advantage.type 1)}} color-adv{{else}} color-dis{{/if}}{{/if}}{{#if success}} color-adv{{/if}}{{/if}}
+                                            ">
                                                 {{result}}
                                             </div>
                                         </div>