diff --git a/android/src/mindustry/android/AndroidLauncher.java b/android/src/mindustry/android/AndroidLauncher.java
index 5084cbc67d..1c9ee8f144 100644
--- a/android/src/mindustry/android/AndroidLauncher.java
+++ b/android/src/mindustry/android/AndroidLauncher.java
@@ -45,6 +45,7 @@ public class AndroidLauncher extends AndroidApplication{
                 handler.uncaughtException(thread, error);
             }else{
                 error.printStackTrace();
+                Log.err(error);
                 System.exit(1);
             }
         });
diff --git a/core/assets/contributors b/core/assets/contributors
index e11fc8b808..59f40b3ef2 100644
--- a/core/assets/contributors
+++ b/core/assets/contributors
@@ -112,3 +112,4 @@ Catchears
 younggam
 simba-fs
 RedRadiation
+Marko Zajc
diff --git a/core/src/mindustry/ai/BaseAI.java b/core/src/mindustry/ai/BaseAI.java
index 2a81d1535d..85e6656d28 100644
--- a/core/src/mindustry/ai/BaseAI.java
+++ b/core/src/mindustry/ai/BaseAI.java
@@ -32,6 +32,7 @@ public class BaseAI{
     private static final Seq<Tile> tmpTiles = new Seq<>();
 
     private static int correct = 0, incorrect = 0;
+    private static boolean anyDrills;
 
     private int lastX, lastY, lastW, lastH;
     private boolean triedWalls, foundPath;
@@ -200,7 +201,7 @@ public class BaseAI{
         int cx = x - (int)rotator.x;
         int cy = y - (int)rotator.y;
 
-        //chekc valid placeability
+        //check valid placeability
         for(Stile tile : result.tiles){
             int realX = tile.x + cx, realY = tile.y + cy;
             if(!Build.validPlace(tile.block, data.team, realX, realY, tile.rotation)){
@@ -217,16 +218,18 @@ public class BaseAI{
 
         //make sure at least X% of resource requirements are met
         correct = incorrect = 0;
+        anyDrills = false;
 
         if(part.required instanceof Item){
             for(Stile tile : result.tiles){
                 if(tile.block instanceof Drill){
+                    anyDrills = true;
 
                     tile.block.iterateTaken(tile.x + cx, tile.y + cy, (ex, ey) -> {
                         Tile res = world.rawTile(ex, ey);
                         if(res.drop() == part.required){
                             correct ++;
-                        }else{
+                        }else if(res.drop() != null){
                             incorrect ++;
                         }
                     });
@@ -235,7 +238,7 @@ public class BaseAI{
         }
 
         //fail if not enough fit requirements
-        if((float)correct / incorrect < correctPercent){
+        if(anyDrills && (incorrect != 0 || correct == 0)){
             return false;
         }
 
diff --git a/core/src/mindustry/core/Renderer.java b/core/src/mindustry/core/Renderer.java
index 712f894155..8f5423cbc1 100644
--- a/core/src/mindustry/core/Renderer.java
+++ b/core/src/mindustry/core/Renderer.java
@@ -20,6 +20,9 @@ import static arc.Core.*;
 import static mindustry.Vars.*;
 
 public class Renderer implements ApplicationListener{
+    /** These are global variables, for headless access. Cached. */
+    public static float laserOpacity = 0.5f, bridgeOpacity = 0.75f;
+
     public final BlockRenderer blocks = new BlockRenderer();
     public final MinimapRenderer minimap = new MinimapRenderer();
     public final OverlayRenderer overlays = new OverlayRenderer();
@@ -29,7 +32,6 @@ public class Renderer implements ApplicationListener{
 
     public @Nullable Bloom bloom;
     public FrameBuffer effectBuffer = new FrameBuffer();
-    public float laserOpacity = 1f;
     public boolean animateShields, drawWeather = true;
     /** minZoom = zooming out, maxZoom = zooming in */
     public float minZoom = 1.5f, maxZoom = 6f;
@@ -71,6 +73,7 @@ public class Renderer implements ApplicationListener{
         camerascale = Mathf.lerpDelta(camerascale, dest, 0.1f);
         if(Mathf.equal(camerascale, dest, 0.001f)) camerascale = dest;
         laserOpacity = settings.getInt("lasersopacity") / 100f;
+        bridgeOpacity = settings.getInt("bridgeopacity") / 100f;
         animateShields = settings.getBool("animatedshields");
 
         if(landTime > 0){
diff --git a/core/src/mindustry/entities/comp/BuilderComp.java b/core/src/mindustry/entities/comp/BuilderComp.java
index 5b065ef666..a5c55485ec 100644
--- a/core/src/mindustry/entities/comp/BuilderComp.java
+++ b/core/src/mindustry/entities/comp/BuilderComp.java
@@ -108,7 +108,7 @@ abstract class BuilderComp implements Posc, Teamc, Rotc{
                 plans.removeFirst();
                 return;
             }
-        }else if((tile.team() != team && tile.team() != Team.derelict) || (!current.breaking && cb.cblock != current.block)){
+        }else if((tile.team() != team && tile.team() != Team.derelict) || (!current.breaking && (cb.cblock != current.block || cb.tile != current.tile()))){
             plans.removeFirst();
             return;
         }
diff --git a/core/src/mindustry/entities/comp/PayloadComp.java b/core/src/mindustry/entities/comp/PayloadComp.java
index f29d988d74..8db8656d88 100644
--- a/core/src/mindustry/entities/comp/PayloadComp.java
+++ b/core/src/mindustry/entities/comp/PayloadComp.java
@@ -136,7 +136,9 @@ abstract class PayloadComp implements Posc, Rotc, Hitboxc, Unitc{
             int rot = (int)((rotation + 45f) / 90f) % 4;
             payload.place(on, rot);
 
-            if(isPlayer()) payload.build.lastAccessed = getPlayer().name;
+            if(getControllerName() != null){
+                payload.build.lastAccessed = getControllerName();
+            }
 
             Fx.unitDrop.at(tile);
             Fx.placeBlock.at(on.drawx(), on.drawy(), on.block().size);
diff --git a/core/src/mindustry/entities/comp/UnitComp.java b/core/src/mindustry/entities/comp/UnitComp.java
index 004ae4a196..81a604e455 100644
--- a/core/src/mindustry/entities/comp/UnitComp.java
+++ b/core/src/mindustry/entities/comp/UnitComp.java
@@ -445,6 +445,15 @@ abstract class UnitComp implements Healthc, Physicsc, Hitboxc, Statusc, Teamc, I
         remove();
     }
 
+    /** @return name of direct or indirect player controller. */
+    @Override
+    public @Nullable String getControllerName(){
+        if(isPlayer()) return getPlayer().name;
+        if(controller instanceof LogicAI ai && ai.controller != null) return ai.controller.lastAccessed;
+        if(controller instanceof FormationAI ai && ai.leader != null && ai.leader.isPlayer()) return ai.leader.getPlayer().name;
+        return null;
+    }
+
     @Override
     public void display(Table table){
         type.display(self(), table);
diff --git a/core/src/mindustry/logic/LStatements.java b/core/src/mindustry/logic/LStatements.java
index d20c4477f4..d8fce354ad 100644
--- a/core/src/mindustry/logic/LStatements.java
+++ b/core/src/mindustry/logic/LStatements.java
@@ -387,15 +387,13 @@ public class LStatements{
     public static class RadarStatement extends LStatement{
         public RadarTarget target1 = RadarTarget.enemy, target2 = RadarTarget.any, target3 = RadarTarget.any;
         public RadarSort sort = RadarSort.distance;
-        public String radar = "0", sortOrder = "1", output = "result";
+        public String radar = "turret1", sortOrder = "1", output = "result";
 
         @Override
         public void build(Table table){
             table.defaults().left();
 
             if(buildFrom()){
-                radar = "turret1";
-
                 table.add(" from ");
 
                 fields(table, radar, v -> radar = v);
diff --git a/core/src/mindustry/logic/LogicDialog.java b/core/src/mindustry/logic/LogicDialog.java
index 51b6468c77..dd12b9cca3 100644
--- a/core/src/mindustry/logic/LogicDialog.java
+++ b/core/src/mindustry/logic/LogicDialog.java
@@ -3,6 +3,7 @@ package mindustry.logic;
 import arc.*;
 import arc.func.*;
 import arc.scene.ui.TextButton.*;
+import arc.util.*;
 import mindustry.gen.*;
 import mindustry.logic.LStatements.*;
 import mindustry.ui.*;
@@ -90,16 +91,20 @@ public class LogicDialog extends BaseDialog{
         onResize(() -> canvas.rebuild());
     }
 
-    public void show(String code, Cons<String> consumer){
+    public void show(String code, Cons<String> modified){
         canvas.statements.clearChildren();
         canvas.rebuild();
         try{
             canvas.load(code);
         }catch(Throwable t){
-            t.printStackTrace();
+            Log.err(t);
             canvas.load("");
         }
-        this.consumer = consumer;
+        this.consumer = result -> {
+            if(!result.equals(code)){
+                modified.get(result);
+            }
+        };
 
         show();
     }
diff --git a/core/src/mindustry/net/CrashSender.java b/core/src/mindustry/net/CrashSender.java
index 0d2204890c..4ca4f3714e 100644
--- a/core/src/mindustry/net/CrashSender.java
+++ b/core/src/mindustry/net/CrashSender.java
@@ -47,7 +47,12 @@ public class CrashSender{
 
     public static void send(Throwable exception, Cons<File> writeListener){
         try{
-            exception.printStackTrace();
+            try{
+                //log to file
+                Log.err(exception);
+            }catch(Throwable no){
+                exception.printStackTrace();
+            }
 
             //try saving game data
             try{
diff --git a/core/src/mindustry/ui/dialogs/JoinDialog.java b/core/src/mindustry/ui/dialogs/JoinDialog.java
index 2d9f565c7b..4f858a67ff 100644
--- a/core/src/mindustry/ui/dialogs/JoinDialog.java
+++ b/core/src/mindustry/ui/dialogs/JoinDialog.java
@@ -563,25 +563,32 @@ public class JoinDialog extends BaseDialog{
         transient Host lastHost;
 
         void setIP(String ip){
-
-            //parse ip:port, if unsuccessful, use default values
-            if(ip.lastIndexOf(':') != -1 && ip.lastIndexOf(':') != ip.length() - 1){
-                try{
+            try{
+                boolean isIpv6 = Strings.count(ip, ':') > 1;
+                if(isIpv6 && ip.lastIndexOf("]:") != -1 && ip.lastIndexOf("]:") != ip.length() - 1){
+                    int idx = ip.indexOf("]:");
+                    this.ip = ip.substring(1, idx);
+                    this.port = Integer.parseInt(ip.substring(idx + 2, ip.length()));
+                }else if(!isIpv6 && ip.lastIndexOf(':') != -1 && ip.lastIndexOf(':') != ip.length() - 1){
                     int idx = ip.lastIndexOf(':');
                     this.ip = ip.substring(0, idx);
                     this.port = Integer.parseInt(ip.substring(idx + 1));
-                }catch(Exception e){
+                }else{
                     this.ip = ip;
                     this.port = Vars.port;
                 }
-            }else{
+            }catch(Exception e){
                 this.ip = ip;
                 this.port = Vars.port;
             }
         }
 
         String displayIP(){
-            return ip + (port != Vars.port ? ":" + port : "");
+            if(Strings.count(ip, ':') > 1){
+                return port != Vars.port ? "[" + ip + "]:" + port : ip;
+            }else{
+                return ip + (port != Vars.port ? ":" + port : "");
+            }
         }
 
         public Server(){
diff --git a/core/src/mindustry/world/Build.java b/core/src/mindustry/world/Build.java
index ee868942a3..b450509c7b 100644
--- a/core/src/mindustry/world/Build.java
+++ b/core/src/mindustry/world/Build.java
@@ -45,7 +45,10 @@ public class Build{
         build.setDeconstruct(previous);
         build.prevBuild = prevBuild;
         tile.build.health = tile.build.maxHealth * prevPercent;
-        if(unit != null && unit.isPlayer()) tile.build.lastAccessed = unit.getPlayer().name;
+
+        if(unit != null && unit.getControllerName() != null){
+            tile.build.lastAccessed = unit.getControllerName();
+        }
 
         Core.app.post(() -> Events.fire(new BlockBuildBeginEvent(tile, team, unit, true)));
     }
@@ -64,7 +67,7 @@ public class Build{
 
         //auto-rotate the block to the correct orientation and bail out
         if(tile.team() == team && tile.block == result && tile.build != null && tile.block.quickRotate){
-            if(unit != null && unit.isPlayer()) tile.build.lastAccessed = unit.getPlayer().name;
+            if(unit != null && unit.getControllerName() != null) tile.build.lastAccessed = unit.getControllerName();
             tile.build.rotation = Mathf.mod(rotation, 4);
             tile.build.updateProximity();
             tile.build.noSleep();
@@ -90,7 +93,7 @@ public class Build{
 
         build.setConstruct(previous.size == sub.size ? previous : Blocks.air, result);
         build.prevBuild = prevBuild;
-        if(unit != null && unit.isPlayer()) build.lastAccessed = unit.getPlayer().name;
+        if(unit != null && unit.getControllerName() != null) build.lastAccessed = unit.getControllerName();
 
         result.placeBegan(tile, previous);
 
diff --git a/core/src/mindustry/world/blocks/ConstructBlock.java b/core/src/mindustry/world/blocks/ConstructBlock.java
index 9e6696263c..f2ebd161dd 100644
--- a/core/src/mindustry/world/blocks/ConstructBlock.java
+++ b/core/src/mindustry/world/blocks/ConstructBlock.java
@@ -78,8 +78,8 @@ public class ConstructBlock extends Block{
                 tile.build.overwrote(prev);
             }
 
-            if(builder != null && builder.isPlayer()){
-                tile.build.lastAccessed = builder.getPlayer().name;
+            if(builder != null && builder.getControllerName() != null){
+                tile.build.lastAccessed = builder.getControllerName();
             }
         }
 
diff --git a/core/src/mindustry/world/blocks/distribution/ExtendingItemBridge.java b/core/src/mindustry/world/blocks/distribution/ExtendingItemBridge.java
index 18bc444eec..98b48e043a 100644
--- a/core/src/mindustry/world/blocks/distribution/ExtendingItemBridge.java
+++ b/core/src/mindustry/world/blocks/distribution/ExtendingItemBridge.java
@@ -1,9 +1,9 @@
 package mindustry.world.blocks.distribution;
 
-import arc.*;
 import arc.graphics.g2d.*;
 import arc.math.*;
 import arc.math.geom.*;
+import mindustry.core.*;
 import mindustry.graphics.*;
 import mindustry.world.*;
 
@@ -36,9 +36,8 @@ public class ExtendingItemBridge extends ItemBridge{
             ex *= uptime;
             ey *= uptime;
 
-            float opacity = Core.settings.getInt("bridgeopacity") / 100f;
-            if(Mathf.zero(opacity)) return;
-            Draw.alpha(opacity);
+            if(Mathf.zero(Renderer.bridgeOpacity)) return;
+            Draw.alpha(Renderer.bridgeOpacity);
 
             Lines.stroke(8f);
             Lines.line(bridgeRegion,
@@ -59,7 +58,7 @@ public class ExtendingItemBridge extends ItemBridge{
             Draw.color();
 
             for(int a = 0; a < arrows; a++){
-                Draw.alpha(Mathf.absin(a / (float)arrows - time / 100f, 0.1f, 1f) * uptime * opacity);
+                Draw.alpha(Mathf.absin(a / (float)arrows - time / 100f, 0.1f, 1f) * uptime * Renderer.bridgeOpacity);
                 Draw.rect(arrowRegion,
                 x + Geometry.d4(i).x * (tilesize / 2f + a * 6f + 2) * uptime,
                 y + Geometry.d4(i).y * (tilesize / 2f + a * 6f + 2) * uptime,
diff --git a/core/src/mindustry/world/blocks/distribution/ItemBridge.java b/core/src/mindustry/world/blocks/distribution/ItemBridge.java
index 604cefce4a..2ab0c9b047 100644
--- a/core/src/mindustry/world/blocks/distribution/ItemBridge.java
+++ b/core/src/mindustry/world/blocks/distribution/ItemBridge.java
@@ -10,6 +10,7 @@ import arc.struct.IntSet.*;
 import arc.util.*;
 import arc.util.io.*;
 import mindustry.annotations.Annotations.*;
+import mindustry.core.*;
 import mindustry.entities.units.*;
 import mindustry.gen.*;
 import mindustry.graphics.*;
@@ -70,6 +71,9 @@ public class ItemBridge extends Block{
     }
 
     public void drawBridge(BuildPlan req, float ox, float oy, float flip){
+        if(Mathf.zero(Renderer.bridgeOpacity)) return;
+        Draw.alpha(Renderer.bridgeOpacity);
+
         Lines.stroke(8f);
 
         Tmp.v1.set(ox, oy).sub(req.drawx(), req.drawy()).setLength(tilesize/2f);
@@ -84,6 +88,8 @@ public class ItemBridge extends Block{
 
         Draw.rect(arrowRegion, (req.drawx() + ox) / 2f, (req.drawy() + oy) / 2f,
         Angles.angle(req.drawx(), req.drawy(), ox, oy) + flip);
+
+        Draw.reset();
     }
 
     @Override
@@ -321,13 +327,12 @@ public class ItemBridge extends Block{
             Tile other = world.tile(link);
             if(!linkValid(tile, other)) return;
 
-            float opacity = Core.settings.getInt("bridgeopacity") / 100f;
-            if(Mathf.zero(opacity)) return;
+            if(Mathf.zero(Renderer.bridgeOpacity)) return;
 
             int i = relativeTo(other.x, other.y);
 
             Draw.color(Color.white, Color.black, Mathf.absin(Time.time, 6f, 0.07f));
-            Draw.alpha(Math.max(uptime, 0.25f) * opacity);
+            Draw.alpha(Math.max(uptime, 0.25f) * Renderer.bridgeOpacity);
 
             Draw.rect(endRegion, x, y, i * 90 + 90);
             Draw.rect(endRegion, other.drawx(), other.drawy(), i * 90 + 270);
@@ -350,7 +355,7 @@ public class ItemBridge extends Block{
             Draw.color();
 
             for(int a = 0; a < arrows; a++){
-                Draw.alpha(Mathf.absin(a / (float)arrows - time / 100f, 0.1f, 1f) * uptime * opacity);
+                Draw.alpha(Mathf.absin(a / (float)arrows - time / 100f, 0.1f, 1f) * uptime * Renderer.bridgeOpacity);
                 Draw.rect(arrowRegion,
                 x + Geometry.d4(i).x * (tilesize / 2f + a * 4f + time % 4f),
                 y + Geometry.d4(i).y * (tilesize / 2f + a * 4f + time % 4f), i * 90f);
diff --git a/core/src/mindustry/world/blocks/distribution/StackConveyor.java b/core/src/mindustry/world/blocks/distribution/StackConveyor.java
index 34da509f96..41b0736181 100644
--- a/core/src/mindustry/world/blocks/distribution/StackConveyor.java
+++ b/core/src/mindustry/world/blocks/distribution/StackConveyor.java
@@ -167,6 +167,16 @@ public class StackConveyor extends Block implements Autotiler{
                 }
             }
 
+            //cannot load when facing
+            if(state == stateLoad){
+                for(Building near : proximity){
+                    if(near instanceof StackConveyorBuild && near.front() == this){
+                        state = stateMove;
+                        break;
+                    }
+                }
+            }
+
             //update other conveyor state when this conveyor's state changes
             if(state != lastState){
                 proxUpdating = true;
diff --git a/core/src/mindustry/world/blocks/logic/LogicBlock.java b/core/src/mindustry/world/blocks/logic/LogicBlock.java
index b9fc38bf8b..21d3534273 100644
--- a/core/src/mindustry/world/blocks/logic/LogicBlock.java
+++ b/core/src/mindustry/world/blocks/logic/LogicBlock.java
@@ -477,9 +477,7 @@ public class LogicBlock extends Block{
         @Override
         public void buildConfiguration(Table table){
             table.button(Icon.pencil, Styles.clearTransi, () -> {
-                Vars.ui.logic.show(code, code -> {
-                    configure(compress(code, relativeConnections()));
-                });
+                Vars.ui.logic.show(code, code -> configure(compress(code, relativeConnections())));
             }).size(40);
         }
 
diff --git a/core/src/mindustry/world/blocks/power/PowerNode.java b/core/src/mindustry/world/blocks/power/PowerNode.java
index 33ac673c92..f5801d98a7 100644
--- a/core/src/mindustry/world/blocks/power/PowerNode.java
+++ b/core/src/mindustry/world/blocks/power/PowerNode.java
@@ -159,7 +159,7 @@ public class PowerNode extends PowerBlock{
 
     protected void setupColor(float satisfaction){
         Draw.color(laserColor1, laserColor2, (1f - satisfaction) * 0.86f + Mathf.absin(3f, 0.1f));
-        Draw.alpha(renderer == null ? 0.5f : renderer.laserOpacity);
+        Draw.alpha(Renderer.laserOpacity);
     }
 
     protected void drawLaser(Team team, float x1, float y1, float x2, float y2, int size1, int size2){
@@ -391,7 +391,7 @@ public class PowerNode extends PowerBlock{
         public void draw(){
             super.draw();
 
-            if(Mathf.zero(renderer.laserOpacity)) return;
+            if(Mathf.zero(Renderer.laserOpacity)) return;
 
             Draw.z(Layer.power);
             setupColor(power.graph.getSatisfaction());
diff --git a/gradle.properties b/gradle.properties
index 86554206c5..f42373473e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,3 +1,3 @@
 org.gradle.daemon=true
 org.gradle.jvmargs=-Xms256m -Xmx1024m
-archash=47b5f71c468d3cec66b6721aeb7f7602ddb468d7
+archash=5e9176c3feefa5ee2f14b08f82da1f01f790e64a
diff --git a/ios/src/mindustry/ios/IOSLauncher.java b/ios/src/mindustry/ios/IOSLauncher.java
index 818ea50a0f..edf279d912 100644
--- a/ios/src/mindustry/ios/IOSLauncher.java
+++ b/ios/src/mindustry/ios/IOSLauncher.java
@@ -255,6 +255,7 @@ public class IOSLauncher extends IOSApplication.Delegate{
         }catch(Throwable t){
             //attempt to log the exception
             CrashSender.log(t);
+            Log.err(t);
             //rethrow the exception so it actually crashes
             throw t;
         }