Hotfix PlaceItemUtils for Slab/Stairs/Trapdoor

Signed-off-by: yoyosource <yoyosource@nidido.de>

BauSystem_Main/src/de/steamwar/bausystem/utils/PlaceItemUtils.java

@@ -170,12 +170,21 @@ public class PlaceItemUtils {
         if (blockData instanceof Slab) {
             // Slabs can be set at Top or Bottom
             ((Slab) blockData).setType(isHitHalfTop(player) ? Slab.Type.TOP : Slab.Type.BOTTOM);
+            if (againstSide == BlockFace.DOWN) {
+                ((Slab) blockData).setType(Slab.Type.TOP);
+            }
         } else if (blockData instanceof Stairs) {
             // Stairs can be set at Top or Bottom
             ((Stairs) blockData).setHalf(isHitHalfTop(player) ? Bisected.Half.TOP : Bisected.Half.BOTTOM);
+            if (againstSide == BlockFace.DOWN) {
+                ((Stairs) blockData).setHalf(Bisected.Half.TOP);
+            }
         } else if (blockData instanceof TrapDoor) {
             // TrapDoors can be set at Top or Bottom
             ((TrapDoor) blockData).setHalf(isHitHalfTop(player) ? Bisected.Half.TOP : Bisected.Half.BOTTOM);
+            if (againstSide == BlockFace.DOWN) {
+                ((TrapDoor) blockData).setHalf(Bisected.Half.TOP);
+            }
         } else if (blockData instanceof Chain) {
             // Chains are always rotated against the block you place against
             Orientable orientable = (Orientable) blockData;