feat: UNO Kotlin Multiplatform app (Android, Desktop, Web)

- Full UNO game logic with AI opponents - Compose Multiplatform UI with animations - Shared module (commonMain) with game engine - Desktop app (Compose Desktop) - Android app (Compose Multiplatform) - Web app (Kotlin/Wasm) - Nix shell for reproducible dev environment
2026-08-02 18:21:57 +02:00
commit 786b813f7b
25 changed files with 2093 additions and 0 deletions
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <application
+        android:allowBackup="true"
+        android:label="UNO"
+        android:supportsRtl="true"
+        android:theme="@android:style/Theme.Material.Light.NoActionBar">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:configChanges="orientation|screenSize|screenLayout|keyboardHidden|mnc|colorMode|density|fontScale|fontWeightAdjustment|keyboard|layoutDirection|locale|mcc|navigation|smallestScreenSize|touchscreen|uiMode">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>
@@ -0,0 +1,95 @@
+package com.uno.android
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import com.uno.game.GameEngine
+import com.uno.game.model.*
+import com.uno.shared.UnoGameScreen
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        enableEdgeToEdge()
+        setContent {
+            MaterialTheme {
+                Surface(modifier = Modifier.fillMaxSize(), color = MaterialTheme.colorScheme.background) {
+                    UnoApp()
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun UnoApp() {
+    val engine = remember { GameEngine() }
+    var gameState by remember { mutableStateOf(engine.startGame()) }
+    var gameStarted by remember { mutableStateOf(false) }
+
+    if (!gameStarted) {
+        StartScreen(onStartGame = { playerCount ->
+            gameState = engine.startGame(playerCount)
+            gameStarted = true
+        })
+    } else {
+        UnoGameScreen(
+            state = gameState,
+            onPlayCard = { card, color ->
+                gameState = engine.playCard(gameState, 0, card, color)
+                gameState = runAiTurns(engine, gameState)
+            },
+            onDrawCard = {
+                gameState = engine.drawCard(gameState, 0)
+                gameState = runAiTurns(engine, gameState)
+            },
+            onCallUno = { gameState = engine.callUno(gameState, 0) }
+        )
+
+        if (gameState.isFinished) {
+            GameOverScreen(winner = gameState.winner, onPlayAgain = { gameState = engine.startGame() })
+        }
+    }
+}
+
+private fun runAiTurns(engine: GameEngine, state: GameState): GameState {
+    var currentState = state
+    while (currentState.currentPlayerIndex != 0 && !currentState.isFinished) {
+        currentState = engine.aiPlay(currentState, currentState.currentPlayerIndex)
+    }
+    return currentState
+}
+
+@Composable
+fun StartScreen(onStartGame: (Int) -> Unit) {
+    Column(
+        modifier = Modifier.fillMaxSize(),
+        horizontalAlignment = Alignment.CenterHorizontally,
+        verticalArrangement = Arrangement.Center
+    ) {
+        Text("UNO", style = MaterialTheme.typography.displayLarge, color = MaterialTheme.colorScheme.primary)
+        Spacer(modifier = Modifier.height(8.dp))
+        Text("Kotlin Multiplatform", style = MaterialTheme.typography.titleMedium, color = MaterialTheme.colorScheme.onSurfaceVariant)
+        Spacer(modifier = Modifier.height(24.dp))
+        Button(onClick = { onStartGame(4) }) { Text("Spiel starten (4 Spieler)") }
+    }
+}
+
+@Composable
+fun GameOverScreen(winner: Player?, onPlayAgain: () -> Unit) {
+    AlertDialog(
+        onDismissRequest = onPlayAgain,
+        title = { Text("Spiel vorbei!") },
+        text = { Text(if (winner != null) "${winner.name} hat gewonnen!" else "Unentschieden!") },
+        confirmButton = {
+            Button(onClick = onPlayAgain) { Text("Nochmal spielen") }
+        }
+    )
+}