Better JSON null validation / Disable mods on startup crash

core/assets/bundles/bundle.properties

@@ -113,7 +113,7 @@ committingchanges = Committing Changes
 done = Done
 feature.unsupported = Your device does not support this feature.
 
-mods.alphainfo = Keep in mind that mods are in alpha, and[scarlet] may be very buggy[].\nReport any issues you find to the Mindustry GitHub.
+mods.initfailed = [red]⚠[] The previous Mindustry instance failed to initialize. This was likely caused by misbehaving mods.\n\nTo prevent a crash loop, [red]all mods have been disabled.[]\n\nTo disable this feature, turn it off in [accent]Settings->Game->Disable Mods On Startup Crash[].
 mods = Mods
 mods.none = [lightgray]No mods found!
 mods.guide = Modding Guide
@@ -800,6 +800,7 @@ setting.logichints.name = Logic Hints
 setting.flow.name = Display Resource Flow Rate
 setting.backgroundpause.name = Pause In Background
 setting.buildautopause.name = Auto-Pause Building
+setting.modcrashdisable = Disable Mods On Startup Crash
 setting.animatedwater.name = Animated Surfaces
 setting.animatedshields.name = Animated Shields
 setting.antialias.name = Antialias[lightgray] (requires restart)[]

core/src/mindustry/ClientLauncher.java

@@ -34,6 +34,7 @@ public abstract class ClientLauncher extends ApplicationCore implements Platform
 
     @Override
     public void setup(){
+        checkLaunch();
         loadLogger();
 
         loader = new LoadRenderer();
@@ -145,7 +146,12 @@ public abstract class ClientLauncher extends ApplicationCore implements Platform
                 finished = true;
                 Events.fire(new ClientLoadEvent());
                 super.resize(graphics.getWidth(), graphics.getHeight());
-                app.post(() -> app.post(() -> app.post(() -> app.post(() -> super.resize(graphics.getWidth(), graphics.getHeight())))));
+                app.post(() -> app.post(() -> app.post(() -> app.post(() -> {
+                    super.resize(graphics.getWidth(), graphics.getHeight());
+
+                    //mark initialization as complete
+                    finishLaunch();
+                }))));
             }
         }else{
             asyncCore.begin();
@@ -168,6 +174,12 @@ public abstract class ClientLauncher extends ApplicationCore implements Platform
         lastTime = Time.nanos();
     }
 
+    @Override
+    public void exit(){
+        //on graceful exit, finish the launch normally.
+        Vars.finishLaunch();
+    }
+
     @Override
     public void init(){
         setup();
@@ -182,6 +194,11 @@ public abstract class ClientLauncher extends ApplicationCore implements Platform
 
     @Override
     public void pause(){
+        //when the user tabs out on mobile, the exit() event doesn't fire reliably - in that case, just assume they're about to kill the app
+        //this isn't 100% reliable but it should work for most cases
+        if(mobile){
+            Vars.finishLaunch();
+        }
         if(finished){
             super.pause();
         }

core/src/mindustry/Vars.java

@@ -32,6 +32,8 @@ import java.util.*;
 import static arc.Core.*;
 
 public class Vars implements Loadable{
+    /** Whether the game failed to launch last time. */
+    public static boolean failedToLaunch = false;
     /** Whether to load locales.*/
     public static boolean loadLocales = true;
     /** Whether the logger is loaded. */
@@ -172,6 +174,8 @@ public class Vars implements Loadable{
     public static Fi schematicDirectory;
     /** data subdirectory used for bleeding edge build versions */
     public static Fi bebuildDirectory;
+    /** file used to store launch ID */
+    public static Fi launchIDFile;
     /** empty map, indicates no current map */
     public static Map emptyMap;
     /** map file extension */
@@ -284,6 +288,27 @@ public class Vars implements Loadable{
         maps.load();
     }
 
+    /** Checks if a launch failure occurred.
+     * If this is the case, failedToLaunch is set to true. */
+    public static void checkLaunch(){
+        settings.setAppName(appName);
+        launchIDFile = settings.getDataDirectory().child("launchid.dat");
+
+        if(launchIDFile.exists()){
+            failedToLaunch = true;
+        }else{
+            failedToLaunch = false;
+            launchIDFile.writeString("go away");
+        }
+    }
+
+    /** Cleans up after a successful launch. */
+    public static void finishLaunch(){
+        if(launchIDFile != null){
+            launchIDFile.delete();
+        }
+    }
+
     public static void loadLogger(){
         if(loadedLogger) return;
 

core/src/mindustry/core/Control.java

@@ -59,6 +59,15 @@ public class Control implements ApplicationListener, Loadable{
         saves = new Saves();
         sound = new SoundControl();
 
+        //show dialog saying that mod loading was skipped.
+        Events.on(ClientLoadEvent.class, e -> {
+            if(Vars.mods.skipModLoading() && Vars.mods.list().any()){
+                Time.runTask(4f, () -> {
+                    ui.showInfo("@mods.initfailed");
+                });
+            }
+        });
+
         Events.on(StateChangeEvent.class, event -> {
             if((event.from == State.playing && event.to == State.menu) || (event.from == State.menu && event.to != State.menu)){
                 Time.runTask(5f, platform::updateRPC);

core/src/mindustry/mod/ContentParser.java

@@ -406,6 +406,12 @@ public class ContentParser{
             this.currentMod = mod;
             this.currentContent = cont;
             run.run();
+
+            //check nulls after parsing
+            if(cont != null){
+                toBeParsed.remove(cont);
+                checkNullFields(cont);
+            }
         });
     }
 

core/src/mindustry/mod/Mods.java

@@ -259,6 +259,11 @@ public class Mods implements Loadable{
         return requiresReload;
     }
 
+    /** @return whether to skip mod loading due to previous initialization failure. */
+    public boolean skipModLoading(){
+        return failedToLaunch && Core.settings.getBool("modcrashdisable", true);
+    }
+
     /** Loads all mods from the folder, but does not call any methods on them.*/
     public void load(){
         for(Fi file : modDirectory.list()){
@@ -683,8 +688,13 @@ public class Mods implements Loadable{
 
             //make sure the main class exists before loading it; if it doesn't just don't put it there
             //if the mod is explicitly marked as java, try loading it anyway
-            if((mainFile.exists() || meta.java) &&
-                Core.settings.getBool("mod-" + baseName + "-enabled", true) && Version.isAtLeast(meta.minGameVersion) && (meta.getMinMajor() >= 105 || headless)){
+            if(
+                (mainFile.exists() || meta.java) &&
+                !skipModLoading() &&
+                Core.settings.getBool("mod-" + baseName + "-enabled", true) &&
+                Version.isAtLeast(meta.minGameVersion) &&
+                (meta.getMinMajor() >= 105 || headless)
+            ){
 
                 if(ios){
                     throw new IllegalArgumentException("Java class mods are not supported on iOS.");
@@ -711,11 +721,16 @@ public class Mods implements Loadable{
                 }
             }
 
+            //skip mod loading if it failed
+            if(skipModLoading()){
+                Core.settings.put("mod-" + baseName + "-enabled", false);
+            }
+
             if(!headless){
                 Log.info("Loaded mod '@' in @ms", meta.name, Time.elapsed());
             }
-            return new LoadedMod(sourceFile, zip, mainMod, loader, meta);
 
+            return new LoadedMod(sourceFile, zip, mainMod, loader, meta);
         }catch(Exception e){
             //delete root zip file so it can be closed on windows
             if(rootZip != null) rootZip.delete();

core/src/mindustry/ui/dialogs/ModsDialog.java

@@ -106,11 +106,6 @@ public class ModsDialog extends BaseDialog{
             }
         });
 
-        shown(() -> Core.app.post(() -> {
-            Core.settings.getBoolOnce("modsalpha", () -> {
-                ui.showText("@mods", "@mods.alphainfo");
-            });
-        }));
     }
 
     void modError(Throwable error){

core/src/mindustry/ui/dialogs/SettingsMenuDialog.java

@@ -327,6 +327,10 @@ public class SettingsMenuDialog extends SettingsDialog{
             game.checkPref("buildautopause", false);
         }
 
+        if(!ios){
+            game.checkPref("modcrashdisable", true);
+        }
+
         if(steam){
             game.sliderPref("playerlimit", 16, 2, 32, i -> {
                 platform.updateLobby();

core/src/mindustry/world/blocks/environment/ShallowLiquid.java

@@ -1,10 +1,14 @@
 package mindustry.world.blocks.environment;
 
+import arc.util.*;
 import mindustry.world.*;
 
-//do not use in mods!
+/**
+ * Do not use in mods. This class provides no new functionality, and is only used for the Mindustry sprite generator.
+ * Use the standard Floor class instead.
+ * */
 public class ShallowLiquid extends Floor{
-    public Floor liquidBase, floorBase;
+    public @Nullable Floor liquidBase, floorBase;
     public float liquidOpacity = 0.35f;
 
     public ShallowLiquid(String name){

core/src/mindustry/world/blocks/production/Drill.java

@@ -38,7 +38,7 @@ public class Drill extends Block{
     public float warmupSpeed = 0.02f;
 
     //return variables for countOre
-    protected Item returnItem;
+    protected @Nullable Item returnItem;
     protected int returnCount;
 
     /** Whether to draw the item this drill is mining. */

core/src/mindustry/world/blocks/production/GenericCrafter.java

@@ -3,6 +3,7 @@ package mindustry.world.blocks.production;
 import arc.graphics.g2d.*;
 import arc.math.*;
 import arc.struct.*;
+import arc.util.*;
 import arc.util.io.*;
 import mindustry.content.*;
 import mindustry.entities.*;
@@ -13,8 +14,8 @@ import mindustry.world.draw.*;
 import mindustry.world.meta.*;
 
 public class GenericCrafter extends Block{
-    public ItemStack outputItem;
-    public LiquidStack outputLiquid;
+    public @Nullable ItemStack outputItem;
+    public @Nullable LiquidStack outputLiquid;
 
     public float craftTime = 80;
     public Effect craftEffect = Fx.none;

gradle.properties

@@ -1,3 +1,3 @@
 org.gradle.daemon=true
 org.gradle.jvmargs=-Xms256m -Xmx1024m
-archash=e402c9743e107fb53ed6f069ae72a19a59fbfd3b
+archash=f6caa903fd34c016a902b70c4d41690f5f022431