placeWithProgress

gradle.properties

@@ -9,7 +9,7 @@ yarn_build=3
 loader_version=0.15.11
 
 # Mod Properties
-mod_version=1.4.1
+mod_version=1.5.0
 maven_group=net.mcbrawls
 mod_id=blueprint
 

src/main/kotlin/net/mcbrawls/blueprint/structure/Blueprint.kt

@@ -7,6 +7,8 @@ import net.minecraft.block.BlockState
 import net.minecraft.server.world.ServerWorld
 import net.minecraft.util.math.BlockPos
 import net.minecraft.util.math.Vec3i
+import java.util.concurrent.CompletableFuture
+import java.util.concurrent.atomic.AtomicReference
 import java.util.function.BiConsumer
 
 /**
@@ -38,6 +40,11 @@ data class Blueprint(
      */
     val center: Vec3i = Vec3i(size.x / 2, size.y / 2, size.z / 2)
 
+    /**
+     * The total amount of blocks placed from this blueprint.
+     */
+    val totalBlocks: Int = palettedBlockStates.size
+
     /**
      * Places this blueprint in the world at the given position.
      * @return a placed blueprint
@@ -50,6 +57,28 @@ data class Blueprint(
         return PlacedBlueprint(this, position)
     }
 
+    /**
+     * Launches a completable future placing this blueprint in the world at the given position.
+     * @return a placed blueprint future and a progress provider
+     */
+    fun placeWithProgress(world: ServerWorld, position: BlockPos): Pair<CompletableFuture<PlacedBlueprint>, ProgressProvider> {
+        val progress = AtomicReference(0.0f)
+
+        val future: CompletableFuture<PlacedBlueprint> = CompletableFuture.supplyAsync {
+            var i = 0
+            forEach { offset, state ->
+                world.setBlockState(position.add(offset), state)
+                i++
+            }
+
+            progress.set(i.toFloat() / totalBlocks)
+
+            PlacedBlueprint(this, position)
+        }
+
+        return future to ProgressProvider(progress::get)
+    }
+
     /**
      * Performs the given action for every position in the blueprint.
      */

src/main/kotlin/net/mcbrawls/blueprint/structure/ProgressProvider.kt

@@ -0,0 +1,5 @@
+package net.mcbrawls.blueprint.structure
+
+fun interface ProgressProvider {
+    fun getProgress(): Float
+}