§ How to · with Forge AI
How to make a Roblox dialogue system (with AI)
By Sametcan Tasgiran, Founder & Developer·Published ·Updated
A Roblox dialogue system needs four pieces: a typewriter UI, branching choices, conditional dialogue (responses change based on player state), and clean integration with quests. Forge AI generates all four in 52 seconds.
6 files · 180 lines · 52 seconds · 1 credit. Tree-structured dialogue, modular config.
Typewriter text UI
Characters appear one at a time at configurable speed (default 50ms/char). Tap to skip to end. Click to advance to next line.
Branching choices
Up to 4 player response choices per dialogue node. Each choice routes to a different next node, enabling tree-structured conversations.
Conditional dialogue
Choice nodes can check player state — quest completion, inventory contents, level, attributes. Only available choices show.
Voice line hooks
Each dialogue node has an optional SoundId. Plays simultaneously with the typewriter. Voice line length syncs to text duration if both are present.
Portrait display
NPC portrait shown next to the dialogue box. Configurable per node (allows emotion changes mid-conversation).
Auto-quest integration
Choices can trigger quest accept, item give, currency spend, or any custom action via a simple callback table in DialogueConfig.
Files Forge AI ships for this prompt
6 files · 180 lines · 52 seconds · 1 credit
ServerScriptService/DialogueServer.lua
Validates choice availability, triggers callbacks
42 lines
ReplicatedStorage/Modules/DialogueConfig.lua
Dialogue tree definitions
56 lines
ReplicatedStorage/Remotes/DialogueChoice
Player choice → server
instance
StarterGui/DialogueUI.lua
Typewriter + choice buttons + portrait
58 lines
StarterPlayer/StarterPlayerScripts/DialogueClient.lua
Tracks current node, handles input
24 lines
StarterPlayer/StarterCharacterScripts/NPCInteract.lua
Proximity prompt → starts dialogue
22 lines
Sample output: ReplicatedStorage/Modules/DialogueConfig.lua
--!strict
-- ReplicatedStorage/Modules/DialogueConfig.lua (Forge AI · excerpt)
type Choice = {
text: string,
next: string?,
condition: ((player: Player) -> boolean)?,
action: ((player: Player) -> ())?,
}
type Node = {
speaker: string,
portrait: string?,
text: string,
voiceId: string?,
choices: { Choice }?,
}
local DialogueConfig: { [string]: Node } = {
blacksmith_intro = {
speaker = "Bram the Blacksmith",
portrait = "rbxassetid://1234567",
text = "Welcome, traveler. Need a blade sharpened?",
choices = {
{ text = "Yes, please.", next = "blacksmith_offer" },
{ text = "Just looking around.", next = "blacksmith_idle" },
{
text = "I have a special request...",
next = "blacksmith_quest",
condition = function(p) return p:GetAttribute("Reputation") >= 100 end,
},
},
},
blacksmith_offer = {
speaker = "Bram",
text = "That'll be 50 gold. Hand it over.",
choices = {
{
text = "Here you go.",
action = function(p)
local cash = p.leaderstats and p.leaderstats:FindFirstChild("Cash")
if cash and cash.Value >= 50 then cash.Value -= 50 end
end,
next = "blacksmith_thanks",
},
{ text = "Maybe later.", next = "blacksmith_idle" },
},
},
}
return DialogueConfigBuilding a Roblox dialogue system
Dialogue systems are where Roblox games either feel alive or feel like a quest-vending machine. The mark of a good dialogue system is that writers can add a new conversation without involving a scripter. Forge AI ships exactly that — a JSON-like config, no engine changes needed.
The Forge AI dialogue prompt produces a 6-file system in 52 seconds. DialogueConfig.lua is a tree of Node objects, each with text, choices, optional conditions, and optional callbacks. Adding a new NPC conversation is adding a node — no scripting required after the engine is set up.
The typewriter UI is the standard polish. Characters appear at 50ms intervals (configurable per player as a setting). Tap during typing skips to the end. Tap when complete advances to the next node. This pacing matches Final Fantasy and AAA RPG conventions, which is what players expect.
Conditional choices are the design depth. A node can have a choice that only appears if the player has completed a prior quest, owns a specific item, or has a high enough Reputation attribute. This enables story progression that responds to player history — the dialogue tree feels personalized without writing branching scripts for every possible state.
The action callback system is the integration layer. A choice can trigger any function — give an item, deduct cash, start a quest, teleport the player, anything. The callback runs server-side after the player selects the choice. This is how dialogue cleanly integrates with the quest system, shop system, and any other game mechanic.
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Frequently asked
Can I trigger animations alongside the dialogue?+
Yes. Each Node has an optional 'animation' field that fires on the NPC when the dialogue node is entered. Forge can extend with a follow-up prompt to add the AnimationController hook.
How do I make dialogue change based on quest state?+
Each Choice has an optional 'condition' function. Return true to show the choice, false to hide it. The condition runs server-side at choice display time, so you can check QuestManager state, inventory, attributes, etc.
Can I have multiple NPCs share the same dialogue tree?+
Yes. Each NPC tags a 'StartNode' attribute that points into DialogueConfig. Multiple NPCs can share start nodes — they'll have identical conversations. Or they can each have unique start nodes that branch into shared sub-trees.
How do voice lines sync with the text?+
If a node has voiceId, the SoundId plays when the node loads. The typewriter text duration is read from the sound's length — text speed auto-adjusts so the text finishes when the voice does. No manual sync.
What about localization?+
Each Node's text can be a key into a separate localization table. Forge sets up the LocalizationService integration on follow-up if you have a multi-language game.
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