diff --git a/core/src/io/anuke/mindustry/core/Renderer.java b/core/src/io/anuke/mindustry/core/Renderer.java
index d0fd56c5cf..f76214ad50 100644
--- a/core/src/io/anuke/mindustry/core/Renderer.java
+++ b/core/src/io/anuke/mindustry/core/Renderer.java
@@ -210,10 +210,8 @@ public class Renderer extends RendererModule{
 		Graphics.surface(shieldSurface);
 		Graphics.surface();
 		
-		boolean optimize = false;
-		
 		drawFloor();
-		drawBlocks(false, optimize);
+		drawBlocks(false);
 
 		Graphics.shader(Shaders.outline, false);
 		Entities.draw(control.enemyGroup);
@@ -221,8 +219,6 @@ public class Renderer extends RendererModule{
 
 		Entities.draw(Entities.defaultGroup());
 		
-		if(!optimize) drawBlocks(true, false);
-		
 		Entities.draw(control.bulletGroup);
 
 		drawShield();
@@ -369,7 +365,7 @@ public class Renderer extends RendererModule{
 		}
 	}
 	
-	void drawBlocks(boolean top, boolean optimize){
+	void drawBlocks(boolean top){
 		int crangex = (int) (camera.viewportWidth / (chunksize * tilesize)) + 1;
 		int crangey = (int) (camera.viewportHeight / (chunksize * tilesize)) + 1;
 		
@@ -384,8 +380,8 @@ public class Renderer extends RendererModule{
 		
 		Layer[] layers = Layer.values();
 		
-		int start = optimize ? (noshadows ? 1 : 0) : (top ? 4 : (noshadows ? 1 : 0));
-		int end = optimize ? 4 : (top ? 4 + layers.length-1 : 4);
+		int start = (top ? 4 : (noshadows ? 1 : 0));
+		int end = (top ? 4 + layers.length-1 : 4);
 
 		//0 = shadows
 		//1 = cache blocks
@@ -422,15 +418,12 @@ public class Renderer extends RendererModule{
 									(!expanded || tile.block().expanded)){
 								if(l == 2){
 									tile.block().draw(tile);
-								}else if(!optimize){
+								}else{
 									if(tile.block().layer == layer)
 										 tile.block().drawLayer(tile);
 									
 									if(tile.block().layer2 == layer)
 										 tile.block().drawLayer2(tile);
-								}else if(l == 3){
-									tile.block().drawLayer(tile);
-									tile.block().drawLayer2(tile);
 								}
 							}
 						}
diff --git a/core/src/io/anuke/mindustry/ui/LevelDialog.java b/core/src/io/anuke/mindustry/ui/LevelDialog.java
index 45d69703df..baa39b180a 100644
--- a/core/src/io/anuke/mindustry/ui/LevelDialog.java
+++ b/core/src/io/anuke/mindustry/ui/LevelDialog.java
@@ -8,10 +8,13 @@ import io.anuke.mindustry.world.Map;
 import io.anuke.ucore.core.Core;
 import io.anuke.ucore.core.Settings;
 import io.anuke.ucore.core.Timers;
+import io.anuke.ucore.scene.event.InputEvent;
 import io.anuke.ucore.scene.ui.*;
 import io.anuke.ucore.scene.ui.layout.Stack;
 import io.anuke.ucore.scene.ui.layout.Table;
+import io.anuke.ucore.scene.utils.ClickListener;
 import io.anuke.ucore.scene.utils.Elements;
+import io.anuke.ucore.util.Tmp;
 
 public class LevelDialog extends FloatingDialog{
 	private Map selectedMap = Vars.world.maps().getMap(0);
@@ -83,20 +86,29 @@ public class LevelDialog extends FloatingDialog{
 			if(map.custom){
 				image.row();
 				delete[0] = image.addButton("Delete", () -> {
-					Vars.ui.showConfirm("Confirm Delete", "Are you sure you want to delete\nthe map \"[orange]" + map.name + "[]\"?", () -> {
-						Vars.world.maps().removeMap(map);
-						reload();
-						Core.scene.setScrollFocus(pane);
+					Timers.run(1f, () -> {
+						Vars.ui.showConfirm("Confirm Delete", "Are you sure you want to delete\nthe map \"[orange]" + map.name + "[]\"?", () -> {
+							Vars.world.maps().removeMap(map);
+							reload();
+							Core.scene.setScrollFocus(pane);
+						});
 					});
 				}).width(images+16).padBottom(-10f).grow().get();
 			}
-			image.clicked(()->{
-				if(delete[0] != null && delete[0].getClickListener().isOver()){
-					return;
+			
+			image.addListener(new ClickListener(){
+				public void clicked(InputEvent event, float x, float y){
+					image.localToStageCoordinates(Tmp.v1.set(x, y));
+					if(delete[0] != null && (delete[0].getClickListener().isOver() || delete[0].getClickListener().isPressed()
+							|| (Core.scene.hit(Tmp.v1.x, Tmp.v1.y, true) != null && 
+							Core.scene.hit(Tmp.v1.x, Tmp.v1.y, true).isDescendantOf(delete[0])))){
+						return;
+					}
+					
+					selectedMap = map;
+					hide();
+					Vars.control.playMap(selectedMap);
 				}
-				selectedMap = map;
-				hide();
-				Vars.control.playMap(selectedMap);
 			});
 			image.getImageCell().size(images);
 			
diff --git a/core/src/io/anuke/mindustry/world/blocks/Blocks.java b/core/src/io/anuke/mindustry/world/blocks/Blocks.java
index d9aa00ede7..b59378829e 100644
--- a/core/src/io/anuke/mindustry/world/blocks/Blocks.java
+++ b/core/src/io/anuke/mindustry/world/blocks/Blocks.java
@@ -8,9 +8,7 @@ import io.anuke.mindustry.resource.ItemStack;
 import io.anuke.mindustry.resource.Liquid;
 import io.anuke.mindustry.world.Block;
 import io.anuke.mindustry.world.Tile;
-import io.anuke.mindustry.world.blocks.types.BlockPart;
-import io.anuke.mindustry.world.blocks.types.Floor;
-import io.anuke.mindustry.world.blocks.types.StaticBlock;
+import io.anuke.mindustry.world.blocks.types.*;
 import io.anuke.ucore.core.Effects;
 import io.anuke.ucore.core.Timers;
 import io.anuke.ucore.util.Mathf;
@@ -79,25 +77,26 @@ public class Blocks{
 	
 	stone = new Floor("stone"){{
 		drops = new ItemStack(Item.stone, 1);
+		blends = block -> block != this && !(block instanceof Ore);
 	}},
 	
 	blackstone = new Floor("blackstone"){{
 		drops = new ItemStack(Item.stone, 1);
 	}},
 	
-	iron = new Floor("iron"){{
+	iron = new Ore("iron"){{
 		drops = new ItemStack(Item.iron, 1);
 	}},
 	
-	coal = new Floor("coal"){{
+	coal = new Ore("coal"){{
 		drops = new ItemStack(Item.coal, 1);
 	}},
 	
-	titanium = new Floor("titanium"){{
+	titanium = new Ore("titanium"){{
 		drops = new ItemStack(Item.titanium, 1);
 	}},
 	
-	uranium = new Floor("uranium"){{
+	uranium = new Ore("uranium"){{
 		drops = new ItemStack(Item.uranium, 1);
 	}},
 	
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/Floor.java b/core/src/io/anuke/mindustry/world/blocks/types/Floor.java
index e82b670f0b..0f3a1c7484 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/Floor.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/Floor.java
@@ -7,10 +7,12 @@ import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.world.Block;
 import io.anuke.mindustry.world.Tile;
 import io.anuke.ucore.core.Draw;
+import io.anuke.ucore.function.Predicate;
 import io.anuke.ucore.util.Mathf;
 
 public class Floor extends Block{
-
+	protected Predicate<Block> blends = block -> block != this;
+	
 	public Floor(String name) {
 		super(name);
 		variants = 3;
@@ -33,7 +35,7 @@ public class Floor extends Block{
 				
 				Block floor = other.floor();
 				
-				if(floor.id <= this.id) continue;
+				if(floor.id <= this.id || !blends.test(floor)) continue;
 				
 				TextureRegion region = Draw.hasRegion(floor.name() + "edge") ? Draw.region(floor.name() + "edge") :
 					Draw.region(floor.edge + "edge");
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/Ore.java b/core/src/io/anuke/mindustry/world/blocks/types/Ore.java
new file mode 100644
index 0000000000..d4d11d2e0a
--- /dev/null
+++ b/core/src/io/anuke/mindustry/world/blocks/types/Ore.java
@@ -0,0 +1,12 @@
+package io.anuke.mindustry.world.blocks.types;
+
+import io.anuke.mindustry.world.blocks.Blocks;
+
+public class Ore extends Floor{
+
+	public Ore(String name) {
+		super(name);
+		blends = block -> block != this && block != Blocks.stone;
+	}
+
+}