Various crash fixes

core/src/io/anuke/mindustry/graphics/BlockRenderer.java

@@ -71,7 +71,9 @@ public class BlockRenderer{
 					Block block = tile.block();
 					
 					if(!expanded && block != Blocks.air && world.isAccessible(worldx, worldy)){
-						block.drawShadow(tile);
+						synchronized (Tile.tileSetLock) {
+							block.drawShadow(tile);
+						}
 					}
 					
 					if(!(block instanceof StaticBlock)){
@@ -130,12 +132,14 @@ public class BlockRenderer{
 				layerBegins(req.layer);
 			}
 
-			if(req.layer == Layer.block){
-				block.draw(req.tile);
-			}else if(req.layer == block.layer){
-				block.drawLayer(req.tile);
-			}else if(req.layer == block.layer2){
-				block.drawLayer2(req.tile);
+			synchronized (Tile.tileSetLock) {
+				if (req.layer == Layer.block) {
+					block.draw(req.tile);
+				} else if (req.layer == block.layer) {
+					block.drawLayer(req.tile);
+				} else if (req.layer == block.layer2) {
+					block.drawLayer2(req.tile);
+				}
 			}
 
 			lastLayer = req.layer;

core/src/io/anuke/mindustry/graphics/MinimapRenderer.java

@@ -94,6 +94,8 @@ public class MinimapRenderer implements Disposable{
     }
 
     public TextureRegion getRegion() {
+        if(texture == null) return null;
+
         int sz = Mathf.clamp(baseSize * zoom, baseSize, Math.min(world.width(), world.height()));
         float dx = (Core.camera.position.x / tilesize);
         float dy = (Core.camera.position.y / tilesize);

core/src/io/anuke/mindustry/graphics/OverlayRenderer.java

@@ -50,7 +50,10 @@ public class OverlayRenderer {
             //draw config selected block
             if(input.frag.config.isShown()){
                 Tile tile = input.frag.config.getSelectedTile();
-                tile.block().drawConfigure(tile);
+
+                synchronized (Tile.tileSetLock) {
+                    tile.block().drawConfigure(tile);
+                }
             }
 
             input.drawTop();
@@ -132,7 +135,9 @@ public class OverlayRenderer {
                         drawbars.run();
                     }
 
-                    target.block().drawSelect(target);
+                    synchronized (Tile.tileSetLock) {
+                        target.block().drawSelect(target);
+                    }
                 }
             }