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 +1,112 @@
+package com.uno.web
+
+import androidx.compose.runtime.*
+import com.uno.game.GameEngine
+import com.uno.game.model.*
+import com.uno.shared.UnoGameScreen
+import kotlinx.browser.document
+import org.w3c.dom.HTMLElement
+
+fun main() {
+    val root = document.getElementById("root") as HTMLElement
+
+    root.innerHTML = ""
+
+    val container = document.createElement("div")
+    container.id = "app"
+    root.appendChild(container)
+
+    composeWebRoot(container)
+}
+
+@Composable
+fun composeWebRoot(container: HTMLElement) {
+    val engine = remember { GameEngine() }
+    var gameState by remember { mutableStateOf(engine.startGame()) }
+    var gameStarted by remember { mutableStateOf(false) }
+
+    if (!gameStarted) {
+        WebStartScreen(
+            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) {
+            WebGameOverScreen(
+                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 WebStartScreen(onStartGame: (Int) -> Unit) {
+    androidx.compose.foundation.layout.Column(
+        modifier = androidx.compose.foundation.layout.fillMaxSize().padding(32.dp),
+        horizontalAlignment = androidx.compose.ui.Alignment.CenterHorizontally,
+        verticalArrangement = androidx.compose.foundation.layout.Arrangement.Center
+    ) {
+        androidx.compose.material3.Text(
+            text = "UNO",
+            style = androidx.compose.material3.MaterialTheme.typography.displayLarge,
+            color = androidx.compose.material3.MaterialTheme.colorScheme.primary
+        )
+        androidx.compose.foundation.layout.Spacer(modifier = Modifier)
+        androidx.compose.material3.Text(
+            text = "Web Edition",
+            style = androidx.compose.material3.MaterialTheme.typography.titleMedium,
+            color = androidx.compose.material3.MaterialTheme.colorScheme.onSurfaceVariant
+        )
+        androidx.compose.foundation.layout.Spacer(modifier = Modifier)
+        androidx.compose.material3.Button(onClick = { onStartGame(4) }) {
+            androidx.compose.material3.Text("Spiel starten (4 Spieler)")
+        }
+    }
+}
+
+@Composable
+fun WebGameOverScreen(winner: Player?, onPlayAgain: () -> Unit) {
+    androidx.compose.material3.AlertDialog(
+        onDismissRequest = onPlayAgain,
+        title = { androidx.compose.material3.Text("Spiel vorbei!") },
+        text = {
+            androidx.compose.material3.Text(
+                text = if (winner != null) "${winner.name} hat gewonnen!"
+                else "Unentschieden!"
+            )
+        },
+        confirmButton = {
+            androidx.compose.material3.Button(onClick = onPlayAgain) {
+                androidx.compose.material3.Text("Nochmal spielen")
+            }
+        }
+    )
+}