Misc fixes

core/src/mindustry/world/Block.java

@@ -108,6 +108,8 @@ public class Block extends UnlockableContent implements Senseable{
     public boolean rotate;
     /** if rotate is true and this is false, the region won't rotate when drawing */
     public boolean rotateDraw = true;
+    /** if rotation = false and this is true, rotation will be locked at 0 when placing (default); advanced use only */
+    public boolean lockRotation = true;
     /** if true, schematic flips with this block are inverted. */
     public boolean invertFlip = false;
     /** number of different variant regions to use */