2 files changed, 21 insertions, 10 deletions
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/api/Boards.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/api/Boards.kt
index 2dd481ca..470b4efa 100644
--- a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/api/Boards.kt
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/api/Boards.kt
@@ -23,7 +23,7 @@ data class Board(
     val publicProduction: ApiProduction,
     val science: ApiScience,
     val military: ApiMilitary,
-    val playedCards: List<TableCard>,
+    val playedCards: List<List<TableCard>>,
     val gold: Int
 )
 
@@ -34,10 +34,21 @@ internal fun InternalBoard.toApiBoard(player: Player, lastMove: Move?): Board =
     publicProduction = publicProduction.toApiProduction(),
     science = science.toApiScience(),
     military = military.toApiMilitary(),
-    playedCards = getPlayedCards().map { it.toTableCard(lastMove) },
+    playedCards = getPlayedCards().map { it.toTableCard(lastMove) }.toColumns(),
     gold = gold
 )
 
+internal fun List<TableCard>.toColumns(): List<List<TableCard>> {
+    val cardsByColor = this.groupBy { it.color }
+    val (resourceCardsCols, otherCols) = cardsByColor.values.partition { it[0].color.isResource }
+    val resourceCardsCol = resourceCardsCols.flatten()
+    val otherColsSorted = otherCols.sortedBy { it[0].color }
+    if (resourceCardsCol.isEmpty()) {
+        return otherColsSorted // we want only non-empty columns
+    }
+    return listOf(resourceCardsCol) + otherColsSorted
+}
+
 data class Wonder(
     val name: String,
     val initialResource: ResourceType,
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/cards/Cards.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/cards/Cards.kt
index cf4df44e..18d9cb96 100644
--- a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/cards/Cards.kt
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/cards/Cards.kt
@@ -41,14 +41,14 @@ internal data class Card(
     }
 }
 
-enum class Color {
-    BROWN,
-    GREY,
-    YELLOW,
-    BLUE,
-    GREEN,
-    RED,
-    PURPLE
+enum class Color(val isResource: Boolean) {
+    BROWN(true),
+    GREY(true),
+    YELLOW(false),
+    BLUE(false),
+    GREEN(false),
+    RED(false),
+    PURPLE(false)
 }
 
 data class CardPlayability(