tiles from kafka -> image tiles... maybe???

modules/events-schema/src/commonMain/kotlin/dev/adamko/kafkatorio/events/schema/factorioCommonData.kt

@@ -54,13 +54,19 @@ data class MapTilePosition(
   val y: Int,
 ) {
   constructor(x: Number, y: Number) : this(x.toInt(), y.toInt())
+
+  fun toMapChunkPosition() = MapChunkPosition(
+    x / MAP_CHUNK_SIZE,
+    y / MAP_CHUNK_SIZE,
+  )
+
 }
 
 /**
  * Red, green, blue and alpha values, all in range `[0, 1]` or all in range `[0, 255]` if any
  * value is > 1.
  *
- * All values here are optional. Color channels default to 0, the alpha channel defaults to 1.
+ * All values here are optional. Colour channels default to 0, the alpha channel defaults to 1.
  */
 @Serializable
 data class Colour(
@@ -85,4 +91,26 @@ data class Colour(
   /** True if all values are between `[0..1]`. */
   fun isPercentage(): Boolean = !isDecimal()
 
+  fun asDecimal() = if (isPercentage()) {
+    Colour(
+      (red * 255).coerceIn(0f..255f),
+      (green * 255).coerceIn(0f..255f),
+      (blue * 255).coerceIn(0f..255f),
+      (alpha * 255).coerceIn(0f..255f),
+    )
+  } else {
+    this
+  }
+
+  fun asPercentage() = if (isPercentage()) {
+    this
+  } else {
+    Colour(
+      (red / 255).coerceIn(0f..1f),
+      (green / 255).coerceIn(0f..1f),
+      (blue / 255).coerceIn(0f..1f),
+      (alpha / 255).coerceIn(0f..1f),
+    )
+  }
+
 }

modules/events-schema/src/commonMain/kotlin/dev/adamko/kafkatorio/events/schema/factorioPrototypes.kt

@@ -36,7 +36,7 @@ object FactorioPrototypeSerializer : JsonContentPolymorphicSerializer<FactorioPr
       }
 
     return when (type) {
-      FactorioPrototype.PrototypeObjectName.LuaTilePrototype -> FactorioMapTilePrototype.serializer()
+      FactorioPrototype.PrototypeObjectName.LuaTilePrototype -> MapTilePrototype.serializer()
       null                                                   ->
         throw Exception("Unknown FactorioPrototype $key: '$type' ")
     }
@@ -45,10 +45,10 @@ object FactorioPrototypeSerializer : JsonContentPolymorphicSerializer<FactorioPr
 
 
 @Serializable
-data class FactorioMapTilePrototype(
+data class MapTilePrototype(
   val name: String,
   val layer: UInt,
-  val mapColor: Colour,
+  val mapColour: Colour,
   val collisionMasks: List<String>,
   val order: String,
   /** Can the tile be mined for resources? */