Fix Chunk.Key computations

blokk-api/src/main/kotlin/space/blokk/world/Chunk.kt

@@ -1,10 +1,12 @@
 package space.blokk.world
 
-import kotlinx.coroutines.*
+import kotlinx.coroutines.CoroutineName
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.SupervisorJob
 import space.blokk.Blokk
 import space.blokk.player.Player
 import kotlin.coroutines.CoroutineContext
-import kotlin.math.abs
+import kotlin.math.floor
 
 abstract class Chunk(
     val world: World,
@@ -17,11 +19,13 @@ abstract class Chunk(
             /**
              * Returns the key for the chunk containing the voxel at [location].
              */
-            fun from(location: VoxelLocation) =
-                Key(location.x / LENGTH, location.z / LENGTH)
+            fun from(location: VoxelLocation) = Key(
+                floor(location.x.toFloat() / LENGTH).toInt(),
+                floor(location.z.toFloat() / LENGTH).toInt()
+            )
         }
 
-        fun translateWorldToChunk(x: Int, z: Int) = Pair(abs(x - (this.x * LENGTH)), abs(z - (this.z * LENGTH)))
+        fun translateWorldToChunk(x: Int, z: Int) = Pair(Math.floorMod(x, LENGTH), Math.floorMod(z, LENGTH))
         fun translateChunkToWorld(x: Int, z: Int) =
             Pair(this.x * LENGTH + x, this.z * LENGTH + z)
 

blokk-api/src/main/kotlin/space/blokk/world/VoxelLocation.kt

@@ -16,7 +16,7 @@ data class VoxelLocation(val x: Int, val y: UByte, val z: Int) {
      *
      * Example: `VoxelLocation(x = 1, y = 2, z = 3)` becomes `Location(x = 1.5, y = 2.5, z = 3.5)`.
      */
-    fun getCenterLocation(): Location = Location(x.toDouble() + 0.5, y.toDouble() + 0.5, z.toDouble() + 0.5)
+    fun atCenter(): Location = Location(x.toDouble() + 0.5, y.toDouble() + 0.5, z.toDouble() + 0.5)
 
     /**
      * Converts this [VoxelLocation] to a [Location] by converting [x], [y] and [z] to a double using [Int.toDouble]
@@ -24,7 +24,7 @@ data class VoxelLocation(val x: Int, val y: UByte, val z: Int) {
      *
      * Example: `VoxelLocation(x = 1, y = 2, z = 3)` becomes `Location(x = 1.5, y = 2, z = 3.5)`.
      */
-    fun getTopCenterLocation(): Location = Location(x.toDouble() + 0.5, y.toDouble(), z.toDouble() + 0.5)
+    fun atTopCenter(): Location = Location(x.toDouble() + 0.5, y.toDouble(), z.toDouble() + 0.5)
 
     /**
      * @return A new [VoxelLocation] with the maximum x, y and z values of a and b.

test-plugin/src/main/kotlin/space/blokk/testplugin/TestPlugin.kt

@@ -6,12 +6,13 @@ import space.blokk.event.EventHandler
 import space.blokk.event.Listener
 import space.blokk.net.event.SessionAfterLoginEvent
 import space.blokk.plugin.Plugin
-import space.blokk.world.*
 import space.blokk.testplugin.anvil.AnvilWorld
-import space.blokk.world.block.Dirt
-import space.blokk.world.block.GrassBlock
+import space.blokk.world.Dimension
+import space.blokk.world.VoxelLocation
+import space.blokk.world.WorldAndLocationWithRotation
+import space.blokk.world.block.CraftingTable
 import space.blokk.world.block.GreenWool
-import space.blokk.world.block.SnowBlock
+import space.blokk.world.block.RedWool
 
 class TestPlugin: Plugin("Test", "1.0.0") {
     override fun onEnable() {
@@ -25,19 +26,21 @@ class TestPlugin: Plugin("Test", "1.0.0") {
         Blokk.dimensionRegistry.register(dimension)
 
         val world = AnvilWorld(dimension, true)
-        world.getVoxelsInCube(VoxelLocation(100, 0, 100), VoxelLocation(-100, 0, -100)).forEach {
-            it.block = GreenWool()
+        world.getVoxelsInCube(VoxelLocation(16, 0, 16), VoxelLocation(-16, 0, -16)).forEach {
+            it.block = if (it.location.x % 16 == 0 || it.location.z % 16 == 0) GreenWool() else RedWool()
         }
 
-        world.getVoxel(VoxelLocation(0, 10, 0)).block = Dirt()
-        world.getVoxel(VoxelLocation(10, 4, 22)).block = GrassBlock()
-        world.getVoxel(VoxelLocation(40, 3, -32)).block = SnowBlock()
+        world.getVoxel(VoxelLocation(-1, 2, -1)).block = CraftingTable()
 
         Blokk.sessions.registerListener(object : Listener {
             @EventHandler
             fun onSessionAfterLogin(event: SessionAfterLoginEvent) {
-                event.initialWorldAndLocation =
-                    WorldAndLocationWithRotation(world, LocationWithRotation(0.0, 4.0, 0.0, 0f, 0f))
+                event.canFly = true
+                event.flyingSpeed = 2.0f
+                event.initialWorldAndLocation = WorldAndLocationWithRotation(
+                    world,
+                    VoxelLocation(0, 2, 0).atTopCenter().withRotation(0f, 0f)
+                )
             }
         })
     }

test-plugin/src/main/kotlin/space/blokk/testplugin/anvil/AnvilVoxel.kt

@@ -3,7 +3,6 @@ package space.blokk.testplugin.anvil
 import space.blokk.world.Chunk
 import space.blokk.world.Voxel
 import space.blokk.world.VoxelLocation
-import space.blokk.world.block.Air
 import space.blokk.world.block.Block
 
 class AnvilVoxel(

test-plugin/src/main/kotlin/space/blokk/testplugin/anvil/AnvilWorld.kt

@@ -6,8 +6,8 @@ import com.google.common.cache.LoadingCache
 import space.blokk.entity.Entity
 import space.blokk.event.EventTargetGroup
 import space.blokk.world.Chunk
-import space.blokk.world.World
 import space.blokk.world.Dimension
+import space.blokk.world.World
 import java.util.*
 
 class AnvilWorld(