diff --git a/assets/graphics/function_row_help.png b/assets/graphics/function_row_help.png
index 4feebd98d..a81da17bc 100644
Binary files a/assets/graphics/function_row_help.png and b/assets/graphics/function_row_help.png differ
diff --git a/src/net/torvald/terrarum/AppLoader.java b/src/net/torvald/terrarum/AppLoader.java
index 98d3e1253..3ff910edd 100644
--- a/src/net/torvald/terrarum/AppLoader.java
+++ b/src/net/torvald/terrarum/AppLoader.java
@@ -291,6 +291,7 @@ public class AppLoader implements ApplicationListener {
     @Override
     public void create() {
         resourcePool = CommonResourcePool.INSTANCE;
+        resourcePool.addToLoadingList("blockmarkings_common", () -> new TextureRegionPack(Gdx.files.internal("assets/graphics/blocks/block_markings_common.tga"), 16, 16, 0, 0, 0, 0, false));
 
         newTempFile("wenquanyi.tga"); // temp file required by the font
 
@@ -622,7 +623,7 @@ public class AppLoader implements ApplicationListener {
 
 
     private void setCameraPosition(float newX, float newY) {
-        camera.position.set((-newX + appConfig.width / 2), (-newY + appConfig.height / 2), 0f);
+        camera.position.set((-newX + appConfig.width / 2), (-newY + appConfig.height / 2), 0f); // deliberate integer division
         camera.update();
         logoBatch.setProjectionMatrix(camera.combined);
     }
diff --git a/src/net/torvald/terrarum/gameactors/ActorWBMovable.kt b/src/net/torvald/terrarum/gameactors/ActorWBMovable.kt
index a043a74b4..bb5d020eb 100644
--- a/src/net/torvald/terrarum/gameactors/ActorWBMovable.kt
+++ b/src/net/torvald/terrarum/gameactors/ActorWBMovable.kt
@@ -1,5 +1,7 @@
 package net.torvald.terrarum.gameactors
 
+import com.badlogic.gdx.Input
+import com.badlogic.gdx.graphics.Color
 import com.badlogic.gdx.graphics.g2d.SpriteBatch
 import net.torvald.spriteanimation.SpriteAnimation
 import net.torvald.terrarum.*
@@ -7,6 +9,7 @@ import net.torvald.terrarum.AppLoader.printdbg
 import net.torvald.terrarum.blockproperties.Block
 import net.torvald.terrarum.blockproperties.BlockCodex
 import net.torvald.terrarum.blockproperties.BlockProp
+import net.torvald.terrarum.gamecontroller.KeyToggler
 import net.torvald.terrarum.gameworld.BlockAddress
 import net.torvald.terrarum.gameworld.GameWorld
 import net.torvald.terrarum.modulebasegame.gameactors.ActorHumanoid
@@ -1354,25 +1357,33 @@ open class ActorWBMovable(renderOrder: RenderOrder, val immobileBody: Boolean =
 
     override fun drawBody(batch: SpriteBatch) {
         if (isVisible && sprite != null) {
-            //if (!KeyToggler.isOn(Input.Keys.F12)) {
-                BlendMode.resolve(drawMode, batch)
-                drawSpriteInGoodPosition(sprite!!, batch)
-            /*}
-            // ye olde tilewiseposition debugger, we don't use it anymore.
-            else {
-                batch.color = Color.NAVY
-                val hb = intTilewiseHitbox
+            BlendMode.resolve(drawMode, batch)
+            drawSpriteInGoodPosition(sprite!!, batch)
+        }
 
-                batch.fillRect(
-                        hb.startX.toFloat() * TILE_SIZE,
-                        hb.startY.toFloat() * TILE_SIZE,
-                        hb.width.toFloat() * TILE_SIZE,
-                        hb.height.toFloat() * TILE_SIZE
-                )
+        // debug display of hIntTilewiseHitbox
+        if (KeyToggler.isOn(Input.Keys.F9)) {
+            val blockMark = AppLoader.resourcePool.getAsTextureRegionPack("blockmarkings_common").get(0, 0)
 
-                batch.color = Color.VIOLET
-                batch.fillRect(hitbox.startX.toFloat(), hitbox.startY.toFloat(), hitbox.width.toFloat(), hitbox.height.toFloat())
-            }*/
+            batch.color = Color.MAGENTA
+            for (y in 0 until intTilewiseHitbox.height.toInt()) {
+                for (x in 0 until intTilewiseHitbox.width.toInt()) {
+                    batch.draw(blockMark,
+                            (intTilewiseHitbox.startX.toFloat() + x) * TILE_SIZEF,
+                            (intTilewiseHitbox.startY.toFloat() * y) * TILE_SIZEF
+                    )
+                }
+            }
+
+            batch.color = Color.YELLOW
+            for (y in 0 until hIntTilewiseHitbox.height.toInt()) {
+                for (x in 0 until hIntTilewiseHitbox.width.toInt()) {
+                    batch.draw(blockMark,
+                            (hIntTilewiseHitbox.startX.toFloat() + x) * TILE_SIZEF,
+                            (hIntTilewiseHitbox.startY.toFloat() * y) * TILE_SIZEF
+                    )
+                }
+            }
         }
     }
 
diff --git a/src/net/torvald/terrarum/gameworld/BlockLayer.kt b/src/net/torvald/terrarum/gameworld/BlockLayer.kt
index a1c109204..44f209eb7 100644
--- a/src/net/torvald/terrarum/gameworld/BlockLayer.kt
+++ b/src/net/torvald/terrarum/gameworld/BlockLayer.kt
@@ -38,7 +38,6 @@ open class BlockLayer(val width: Int, val height: Int) : Disposable {
      * TL;DR: LITTLE ENDIAN PLEASE
      */
     constructor(width: Int, height: Int, data: ByteArray) : this(width, height) {
-        unsafe.allocateMemory(width * height * BYTES_PER_BLOCK.toLong())
         data.forEachIndexed { index, byte -> unsafe.putByte(layerPtr + index, byte) }
         unsafeArrayInitialised = true
     }
diff --git a/src/net/torvald/terrarum/modulebasegame/BuildingMaker.kt b/src/net/torvald/terrarum/modulebasegame/BuildingMaker.kt
index 87a57d711..32eaccad6 100644
--- a/src/net/torvald/terrarum/modulebasegame/BuildingMaker.kt
+++ b/src/net/torvald/terrarum/modulebasegame/BuildingMaker.kt
@@ -30,7 +30,6 @@ import net.torvald.terrarum.ui.UINSMenu
 import net.torvald.terrarum.worlddrawer.CreateTileAtlas.TILE_SIZE
 import net.torvald.terrarum.worlddrawer.LightmapRenderer
 import net.torvald.terrarum.worlddrawer.WorldCamera
-import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
 import java.io.File
 import java.io.FileOutputStream
 
@@ -134,7 +133,7 @@ class BuildingMaker(batch: SpriteBatch) : IngameInstance(batch) {
 
     val selection = ArrayList<Point2i>()
 
-    val blockMarkings = TextureRegionPack(Gdx.files.internal("assets/graphics/blocks/block_markings_common.tga"), 16, 16)
+    val blockMarkings = AppLoader.resourcePool.getAsTextureRegionPack("blockmarkings_common")
     internal var showSelection = true
     val blockPointingCursor = object : ActorWithBody(Actor.RenderOrder.OVERLAY) {
 
diff --git a/src/net/torvald/terrarum/modulebasegame/gameitems/BlockBase.kt b/src/net/torvald/terrarum/modulebasegame/gameitems/BlockBase.kt
index 924c592e8..a5a8d4668 100644
--- a/src/net/torvald/terrarum/modulebasegame/gameitems/BlockBase.kt
+++ b/src/net/torvald/terrarum/modulebasegame/gameitems/BlockBase.kt
@@ -27,6 +27,7 @@ object BlockBase {
 
         // check for collision with actors (BLOCK only)
         // FIXME properly fix the collision detection: it OVERRIDES the tiki-torches which should not happen AT ALL
+        // FIXME (h)IntTilewiseHitbox is badly defined
         if (gameItem.inventoryCategory == GameItem.Category.BLOCK) {
             var ret1 = true
             ingame.actorContainerActive.forEach {
diff --git a/work_files/graphics/function_row_help.psd b/work_files/graphics/function_row_help.psd
index 36b3075f7..b1447e23a 100644
--- a/work_files/graphics/function_row_help.psd
+++ b/work_files/graphics/function_row_help.psd
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:cfbc20cf2d7ab7b91e9fa02e477396af4fa881b7792715bce1e663f30b672797
-size 82357
+oid sha256:2541dab2f4d6d58edc61d289b177037e4b0b5094ed906e15ad066a4cd19ab977
+size 85697