DM Command Center

DM Command Center is a browser-based dice rolling suite built for tabletop RPG sessions. It handles the full range of roll types a Dungeon Master needs — from a single d4 to a coordinated mob attack — without any app installs or accounts required.

Core capabilities include:

• Quick Roll — Build any dice formula (e.g. 3d8 + 5) with modifiers, advantage/disadvantage, drop-lowest, and blind mode.
• Mob Roll — Simultaneously roll attacks for up to 30 enemies against a set Armor Class, instantly sorting hits from misses.
• Combat Tracker — A full encounter manager: track initiative order, HP, AC, and conditions (Blinded, Charmed, Poisoned, and 14 more) for every combatant at the table. No paper required.
• Macros — Save named attack+damage combos for recurring creatures and fire them with a single click.
• Statistics — Track your d20 average, natural 20s, natural 1s, and cumulative damage per entity across the full session.
• Session Log — A timestamped, filterable roll history you can download as a .txt file or import back later.

This tool is designed primarily for Dungeon Masters and Game Masters running live tabletop sessions, though players will find it just as useful.

• DMs running combat encounters — Resolve initiative, mob attacks, and saving throws without slowing the table down.
• Players tracking their own rolls — Log attack and damage rolls to review after a session.
• New DMs — The formula preview and structured roll modes make it easy to learn dice notation on the fly.
• Online / hybrid groups — Share your screen so everyone can see rolls happen in real time, with natural 20s and fumbles clearly highlighted.
• Anyone who wants a physical-dice feel in a browser — The animated die shapes and visual results tray aim to replicate the tactile satisfaction of rolling on a table.

The Combat Tracker replaces the pile of index cards, sticky notes, and dice-tower notebooks most DMs use to run encounters. Every combatant — players and monsters alike — lives in a single, always-visible list sorted by initiative.

What you get for each combatant:

• Initiative order — Add combatants, click 🎲 to auto-roll d20 + modifier, or type any value manually. The list re-sorts instantly. Click any initiative badge mid-combat to correct it on the fly.
• HP bar & controls — Visual health bar shifts from green → amber → red as damage mounts. Type an amount and press Dmg or Heal. Dropping to 0 HP automatically applies Unconscious; healing removes it.
• Armor Class display — AC is shown at a glance so you never have to flip to a stat block when a player asks "did I hit?"
• Condition badges — 18 standard conditions: Blinded, Charmed, Concentrating, Deafened, Exhaustion, Frightened, Grappled, Hasted, Invisible, Paralyzed, Petrified, Poisoned, Prone, Rage, Restrained, Slowed, Stunned, Unconscious. Click ± Conditions on any combatant to toggle them on or off. Active conditions appear as colour-coded chips. Click a chip to remove it instantly.
• Turn tracking — Press ▶ Next Turn to advance the active combatant indicator. The round counter increments automatically when the order wraps. The green glow always shows whose turn it is.
• Re-Roll All Initiative — One button re-rolls every combatant's d20 + their saved modifier and re-sorts the order. Useful at the start of each new combat encounter.
• PC vs. NPC labelling — Players are tagged PC in green; monsters are tagged NPC in red, making it easy to distinguish at a glance during a busy encounter.

Everything lives in the five tabs at the top of the page. Here's the quick-start guide:

1. Quick Roll: Click a die type (d4–d100), set how many dice and a modifier, choose a roll mode (Normal / Advantage / Disadvantage / Blind / Drop Lowest), then press Roll — or just hit Enter.
2. Mob Roll: Type an attack formula (e.g. 1d20 + 4), set the number of attackers and the target's AC, name the enemy group, then press Roll Mob Attack. Hits and misses are sorted automatically.
3. Combat Tracker: Open the Combat tab at the start of an encounter. Add each player (type: PC) and monster (type: NPC) with their initiative modifier, HP, and AC. Click 🎲 next to Initiative to auto-roll, or type it directly. Press ▶ Next Turn to step through the order round by round. Apply damage or healing with inline inputs; toggle conditions via ± Conditions on each row.
4. Macros: Open the Macros tab, fill in a name, source entity, attack formula, and optional damage formula, then click Save Macro. Your saved macros appear as cards — click any card to run it instantly.
5. Statistics: Navigate to the Stats tab at any point to see your d20 session average, crit/fumble counts, a visual luck meter, and a damage-output table broken down by entity.
6. Session Log: The log panel is always visible at the bottom of the page. Filter by entity, download a full .txt report, or import a previous session's log to continue tracking.

• Dragon Breath Weapon — Roll 12d6 fire damage for an ancient red dragon's breath. Save the formula as a macro so it's one click every time.
• Skill Check with Advantage — A rogue has advantage on a Stealth check (1d20 + 7). Switch to Advantage mode and roll — the lower die is automatically discarded.
• Goblin Ambush — Twelve goblins (1d20 + 4) attack a fighter with AC 16. Mob Roll resolves all twelve in one shot and tells you exactly how many connect.
• Secret DM Roll — Enable Blind mode to roll a Perception check without revealing the number to players watching your screen.
• Rogue Sneak Attack — Save a macro called "Sneak Attack" with attack formula 1d20 + 7 and damage 1d6 + 4 + 4d6. Run it each turn without recounting dice.
• Post-Session Review — Download the session log after play to see who hit the most, which enemy dealt the most damage, and whether the dice gods were kind tonight.

• No cross-device sync. Macros are stored in your browser's local storage. They won't appear on a different device or browser, and clearing browser data will erase them.
• Session-only statistics. Stats and the log reset when you close or refresh the page — use the Download Log button before ending your session if you want a record.
• Manual formula entry for Mob Roll. The mob attacker formula must be typed by hand; there's no dropdown of pre-built monster attack bonuses.
• Combat Tracker is session-scoped. The tracker resets on page refresh — it is designed for live use during a single session, not as a persistent campaign database across multiple play dates.
• No multiplayer. Each browser instance is independent. Players on separate devices cannot see each other's rolls in real time.
• Up to 30 mob attackers. The Mob Roll cap is 30 — sufficient for most encounters, but very large swarms may need to be split into multiple rolls.
• Requires a modern browser. The tool uses CSS variables, clip-path, and localStorage; older browsers (pre-2019) may render incorrectly.