-18 - Dawnhold Dark Magic 0.16.0 Sahrab Android Page

@Composable fun AltarSlot( slotIndex: Int, filledComponent: ComponentEntity?, onDrop: (ComponentEntity) -> Unit, onClear: () -> Unit ) val background = if (filledComponent == null) Color.Black.copy(alpha = 0.2f) else Color.Transparent

Box( modifier = Modifier .size(96.dp) .clip(CircleShape) .background(background) .border(2.dp, Color.Magenta, CircleShape) .pointerInput(Unit) detectDragGestures( onDragStart = /* ignore */ , onDragEnd = /* ignore */ , onDragCancel = /* ignore */ , onDrag = change, _ -> // Accept only if dragged composable carries a ComponentEntity tag val comp = change.consumeAllChanges().metadata?.get<ComponentEntity>() comp?.let onDrop(it) ) ) if (filledComponent != null) Icon(painterResource(filledComponent.iconRes), contentDescription = filledComponent.name) IconButton(onClick = onClear, modifier = Modifier.align(Alignment.TopEnd)) Icon(Icons.Default.Close, tint = Color.White) else Icon(Icons.Default.Add, tint = Color.White.copy(alpha = 0.5f))

val name = "$rune.name of $gesture.name" val mana = comps.sumOf it.rarity * when (it.type) ComponentType.RUNE -> 5 ComponentType.REAGENT -> 3 ComponentType.GESTURE -> 2 -18 - dawnhold Dark Magic 0.16.0 sahrab Android

// Insert locally + optional cloud suspend fun saveSpell(spell:

@Delete suspend fun delete(spell: SpellEntity) | AltarSlot , SynthesizeButton | | SpellPreviewPane |

return SpellEntity( name = name, description = description, manaCost = mana, componentIds = comps.map it.id )

The drag‑drop demo above is a minimal “metadata” trick; for a production‑ready solution use Accompanist‑drag‑drop or the new Compose Drag‑Drop API (Android 14+). 6.4 Spell Preview Card @Composable fun SpellPreviewCard(spell: SpellEntity?) Card( modifier = Modifier .fillMaxWidth() .padding(8.dp), colors = CardDefaults.cardColors(containerColor = Color(0xFF1B0B2D)) ) if (spell == null) Text( "Add components to craft a spell…", style = MaterialTheme.typography.bodyMedium, color = Color.LightGray, modifier = Modifier.padding(16.dp) ) else Column(modifier = Modifier.padding(16.dp)) Text(spell.name, style = MaterialTheme.typography.titleLarge, color = Color.Cyan) Spacer(Modifier.height(4.dp)) Text(spell.description, style = MaterialTheme.typography.bodyMedium, color = Color.White) Spacer(Modifier.height(8.dp)) Row(verticalAlignment = Alignment.CenterVertically) Icon(Icons.Default.Bolt, tint = Color.Yellow) Spacer(Modifier.width(4.dp)) Text("$spell.manaCost Mana", color = Color.Yellow) | SnackbarHost | 6

// 4️⃣ DAO -------------------------------------------------------------- @Dao interface ComponentDao @Query("SELECT * FROM components") suspend fun getAll(): List<ComponentEntity>

7.1 Repository Skeleton @Singleton class SpellRepository @Inject constructor( private val spellDao: SpellDao, private val componentDao: ComponentDao, private val api: SpellApi, @ApplicationContext private val ctx: Context ) { // Local flow val allSpells: Flow<List<SpellEntity>> = spellDao.observeAll()

@Dao interface SpellDao @Query("SELECT * FROM spells ORDER BY createdAt DESC") fun observeAll(): Flow<List<SpellEntity>>

6.1 Main Screens | Screen | Purpose | Key Composables | |--------|---------|-----------------| | ComponentCatalogScreen | Grid of all components, drag‑source. | LazyVerticalGrid , DraggableComponentCard | | CraftingAltarScreen | Drop‑targets + synthesize button. | AltarSlot , SynthesizeButton | | SpellPreviewPane | Live preview of the generated spell. | SpellPreviewCard | | GrimoireScreen | List of saved spells, cast/delete actions. | LazyColumn , SpellListItem | | SyncSnackbar | One‑liner feedback for cloud sync. | SnackbarHost | 6.2 Example Composable – Drag‑Drop @Composable fun DraggableComponentCard(comp: ComponentEntity) val dragState = rememberDraggableState delta -> /* no‑op, just for semantics */ Box( modifier = Modifier .size(72.dp) .clip(RoundedCornerShape(8.dp)) .background(MaterialTheme.colorScheme.surfaceVariant) .draggable( orientation = Orientation.Horizontal, state = dragState, onDragStarted = /* start */ , onDragStopped = /* drop handling done in AltarSlot */ ) .border(1.dp, Color.DarkGray, RoundedCornerShape(8.dp)) .clickable /* optional tap‑to‑select */ , contentAlignment = Alignment.Center ) Icon(painterResource(comp.iconRes), contentDescription = comp.name)