◆ CLASSIFIED — MISSION BRIEFING

THE BRIEFING

The enemy fleet lurks somewhere in those waters. Your sonar has detected their presence, but their exact positions remain unknown. Somewhere in that 10×10 grid of grey sea and silence, five ships wait — a Carrier, a Battleship, a Cruiser, a Submarine, a Destroyer. Your orders are simple: find them. Sink them. All of them.

Deploy your own fleet with care — placement is strategy. Then fire your first shot into the fog. A ping. A splash. A hit. Each sunken enemy ship delivers a super weapon into your arsenal — a Carpet Bomb, a Barrage, a Sonar Sweep, a Torpedo Spread, a Precision Strike. Use them wisely. The AI opponent thinks. It hunts. It adapts.

Every battle writes your record. Hit percentages, win streaks, medals earned mid-fight — they all accumulate in your career file. Rise from Cadet to Fleet Admiral. Prove your command is flawless. The ocean doesn't forgive hesitation. Neither does the enemy.

◆ INTELLIGENCE REPORT — FLEET MANIFEST

THE FLEET

CARRIER

5 CELLS — LARGEST SHIP

💣 Unlocks CARPET BOMB on sink

BATTLESHIP

4 CELLS

💥 Unlocks BATTLESHIP BARRAGE on sink

CRUISER

3 CELLS

📡 Unlocks SONAR SWEEP on sink

SUBMARINE

3 CELLS

🐠 Unlocks TORPEDO SPREAD on sink

DESTROYER

2 CELLS — SMALLEST SHIP

🎯 Unlocks PRECISION STRIKE on sink

◆ ARSENAL — SUPER WEAPONS CLEARED FOR USE

SUPER WEAPONS

💣

CARPET BOMB

3×3 area bombardment — 9 cells obliterated in a single strike. The most devastating area weapon in the arsenal.

Unlocked by sinking the enemy CARRIER

💥

BATTLESHIP BARRAGE

9-cell cross saturation fire — a plus-shaped pattern punching through center row and center column.

Unlocked by sinking the enemy BATTLESHIP

📡

SONAR SWEEP

5-cell horizontal ping that sweeps an entire row — wide lateral intelligence strike.

Unlocked by sinking the enemy CRUISER

🐠

TORPEDO SPREAD

5-cell vertical salvo punching down a column — depth attack delivered from the deep.

Unlocked by sinking the enemy SUBMARINE

🎯

PRECISION STRIKE

5-cell X-pattern surgical strike — diagonal cross targeting, impossible to evade if a ship hides in the corner.

Unlocked by sinking the enemy DESTROYER

◆ CLASSIFIED — HONOURS & COMMENDATIONS

MEDALS & HONOURS

15 medals earned mid-game accumulate in your career file. Medals also award bonus score points.

⭐ LEGENDARY

💎

PERFECT GUNNER

Win a game with zero misses — every shot connects.

⚡ EPIC

🎯🎯

DEAD-EYE

Finish with 80%+ accuracy (minimum 10 shots fired).

⚡

UNSTOPPABLE

Land 8 consecutive hits without a single miss.

👑

FLAWLESS VICTORY

Win with all 5 of your ships completely intact.

🔥🔥

ON FIRE

Win with a streak of 3+ consecutive victories.

◈ RARE

🎯

FIRST BLOOD

Your very first shot of the game is a direct hit.

🏹

SHARPSHOOTER

Finish with 60%+ accuracy (minimum 10 shots fired).

🔥

HOT STREAK

Land 5 consecutive hits without a miss.

🐋

LEVIATHAN SLAYER

The first ship you sink is the enemy Carrier.

🤫

SILENT SERVICE

Your Submarine survives the entire battle untouched.

🛡️

LAST STAND

Win with only a single ship remaining in your fleet.

🏊

SWIM FOR IT

Lose a game without landing a single hit on the enemy.

◎ COMMON

🚤

DESTROYER LIVES

Your Destroyer survives the entire battle untouched.

🌫️

FOG OF WAR

Miss 10 consecutive shots in a row — the ocean keeps its secrets.

💣

DEPTH CHARGE DIPLOMAT

Fire 100 or more shots in a single game.

◆ COMMAND HIERARCHY — CAREER RANKS

RANK PROGRESSION

Ranks are determined by your best single-game score. Every hit, every sunk ship, every speed bonus pushes your score — and your career — higher.

🎖️ CADET

0+ pts

⚓ ENSIGN

350+ pts

🔵 LIEUTENANT

700+ pts

🟢 CAPTAIN

1100+ pts

🌀 COMMODORE

1500+ pts

💜 VICE ADMIRAL

2000+ pts

🟠 ADMIRAL

2600+ pts

⭐ FLEET ADMIRAL

3500+ pts

◆ FIELD INTELLIGENCE — COMBAT FEEDBACK SYSTEMS

SENSES OF WAR

💥

HIT FLASH

A white burst erupts on hit cells and fades over 500ms — the visual confirmation of a direct strike.

🔴

SUNK GLOW

Sunk ship cells pulse with a red glow animation — infinite, relentless, marking your victories in the grid.

🟠

AI TURN INDICATOR

Amber pulse blinks while the AI calculates its next attack — time slows when the enemy thinks.

🔊

PCM HIT SOUND

Two-tone impact: 1800Hz dropping to 1000Hz. Synthesized in code — no audio files shipped with the app.

💧

PCM MISS SOUND

Descending sweep from 500Hz down to 150Hz — the hollow sound of a shell vanishing into the deep.

💀

PCM SUNK SOUND

Explosive bass rumble layered with noise — the unmistakable sound of a ship breaking apart.

🎺

PCM WIN FANFARE

Ascending victory fanfare — a C-E-G-C chord sequence rising to mark your command of the seas.

📡

PCM SONAR PING

A sharp 2200Hz blip fires when you select a super weapon — the sonar saying: target acquired.

◆ COMMAND CENTER — CAREER STATISTICS

CAREER COMMAND

Two dedicated screens accessible from the main menu: VIEW STATS shows your rank and career numbers; MEDAL REGISTRY shows all 15 medals as hexagonal Canvas art with per-badge earn counts. Records persist across app restarts.

⭐

FLEET ADMIRAL

HIGHEST RANK EARNED

Games Played

Victories

Win Rate

65.9%

Longest Streak

Medal Registry — lifetime earn counts

💎×3 🎯🎯×1 ⚡×2 👑×1 🎯×8 🏹×5 🔥×4 🐋×2 🤫×1 🛡️×1 🚤×3

◆ SYSTEM CAPABILITIES

TACTICAL OVERVIEW

◎

OFFLINE PLAY

No server, no network. Runs entirely on your device. Works anywhere, any time.

◈

AI OPPONENT

Hunt/target algorithm with checkerboard parity — a real tactical challenge that adapts.

⊞

10×10 TACTICAL GRID

5-ship fleet on a full-size Battleship grid. Place manually or use auto-deploy.

💣

5 SUPER WEAPONS

Carpet Bomb, Barrage, Sonar Sweep, Torpedo Spread, Precision Strike. Earn them by sinking ships.

🏅

15 MEDALS

Four rarity tiers: Legendary, Epic, Rare, Common. Dedicated Medal Registry screen with hexagonal Canvas art and lifetime earn counts per badge.

⭐

8 MILITARY RANKS

Cadet to Fleet Admiral. Your best score determines your career rank.

🔊

PCM AUDIO

Synthesized hit, miss, sunk, win, and sonar ping sounds — zero audio files bundled.

🚫

NO ADS · NO ACCOUNT

Free, open-source, Apache-2.0. No tracking, no sign-in, no paywalls.

◆ INSTALLATION

BUILD FROM SOURCE

# Clone the repository
git clone https://github.com/cocodedk/Battleship.git
cd Battleship

# Build debug APK
./gradlew assembleDebug

# Run unit tests
./gradlew test

# Full CI smoke check (debug + tests + lint)
./gradlew buildSmoke

# Output APK
app/build/outputs/apk/debug/app-debug.apk

◆ TECH STACK

ARCHITECTURE

Kotlin 2.2.10  ·  Jetpack Compose BOM 2026.02.01  ·  Material3
Navigation Compose  ·  Coroutines  ·  Min SDK 24 (Android 7.0)

Clean Architecture + MVVM — single GameViewModel across all screens

domain/          ← Pure Kotlin, zero Android deps, fully testable
  model/         ← Ship, Board, ShipType, CellState, GamePhase, GameState
  ai/            ← BattleshipAI (stateless hunt/target algorithm)

presentation/    ← Android / Jetpack Compose
  navigation/    ← BattleshipNavHost, Screen (sealed class routes)
  menu/          ← MenuScreen
  placement/     ← PlacementScreen
  game/          ← GameScreen, GameOverScreen, GameViewModel, GameUiState
  components/    ← BattleGrid (reusable board composable)
  medals/        ← MedalsScreen, MedalCanvas (hex art), MedalSymbols,
                    MedalsViewModel, MedalsStorage, SharedPreferencesMedalsStorage
  stats/         ← StatsScreen

⚓

◆ FIELD DEPLOYMENT

DOWNLOAD & DEPLOY

Free, open-source, offline. No account. No network. Install the APK and take command.

⚓ DOWNLOAD APK VIEW SOURCE