add file picker interface for mods

android/src/mindustry/android/AndroidLauncher.java

@@ -77,11 +77,11 @@ public class AndroidLauncher extends AndroidApplication{
             }
 
             @Override
-            public void showFileChooser(boolean open, String extension, Cons<Fi> cons){
+            public void showFileChooser(boolean open, String title, String extension, Cons<Fi> cons){
-                showFileChooser(open, cons, extension);
+                showFileChooser(open, title, cons, extension);
             }
 
-            void showFileChooser(boolean open, Cons<Fi> cons, String... extensions){
+            void showFileChooser(boolean open, String title, Cons<Fi> cons, String... extensions){
                 String extension = extensions[0];
 
                 if(VERSION.SDK_INT >= VERSION_CODES.Q){
@@ -118,7 +118,7 @@ public class AndroidLauncher extends AndroidApplication{
                     });
                 }else if(VERSION.SDK_INT >= VERSION_CODES.M && !(checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED &&
                     checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)){
-                    chooser = new FileChooser(open ? "@open" : "@save", file -> Structs.contains(extensions, file.extension().toLowerCase()), open, file -> {
+                    chooser = new FileChooser(title, file -> Structs.contains(extensions, file.extension().toLowerCase()), open, file -> {
                         if(!open){
                             cons.get(file.parent().child(file.nameWithoutExtension() + "." + extension));
                         }else{
@@ -136,7 +136,7 @@ public class AndroidLauncher extends AndroidApplication{
                     requestPermissions(perms.toArray(new String[0]), PERMISSION_REQUEST_CODE);
                 }else{
                     if(open){
-                        new FileChooser("@open", file -> Structs.contains(extensions, file.extension().toLowerCase()), true, cons).show();
+                        new FileChooser(title, file -> Structs.contains(extensions, file.extension().toLowerCase()), true, cons).show();
                     }else{
                         super.showFileChooser(open, extension, cons);
                     }

core/assets/scripts/base.js

@@ -1,13 +1,18 @@
 "use strict";
 
 const log = function(context, obj){
-    Vars.mods.getScripts().log(context, String(obj))
+    Vars.mods.scripts.log(context, String(obj))
 }
 
-const readString = path => Vars.mods.getScripts().readString(path)
+const readString = path => Vars.mods.scripts.readString(path)
-const readBytes = path => Vars.mods.getScripts().readBytes(path)
+const readBytes = path => Vars.mods.scripts.readBytes(path)
-const loadMusic = path => Vars.mods.getScripts().loadMusic(path)
+const loadMusic = path => Vars.mods.scripts.loadMusic(path)
-const loadSound = path => Vars.mods.getScripts().loadSound(path)
+const loadSound = path => Vars.mods.scripts.loadSound(path)
+
+const readFile = (purpose, ext, cons) => Vars.mods.scripts.readFile(purpose, ext, cons);
+const readBinFile = (purpose, ext, cons) => Vars.mods.scripts.readBinFile(purpose, ext, cons);
+const writeFile = (purpose, ext, str) => Vars.mods.scripts.writeFile(purpose, ext, str);
+const writeBinFile = (purpose, ext, bytes) => Vars.mods.scripts.writeBinFile(purpose, ext, bytes);
 
 let scriptName = "base.js"
 let modName = "none"

core/assets/scripts/global.js

@@ -11,6 +11,11 @@ const readBytes = path => Vars.mods.getScripts().readBytes(path)
 const loadMusic = path => Vars.mods.getScripts().loadMusic(path)
 const loadSound = path => Vars.mods.getScripts().loadSound(path)
 
+const readFile = (purpose, ext, cons) => Vars.mods.scripts.readFile(purpose, ext, cons);
+const readBinFile = (purpose, ext, cons) => Vars.mods.scripts.readBinFile(purpose, ext, cons);
+const writeFile = (purpose, ext, str) => Vars.mods.scripts.writeFile(purpose, ext, str);
+const writeBinFile = (purpose, ext, bytes) => Vars.mods.scripts.writeBinFile(purpose, ext, bytes);
+
 let scriptName = "base.js"
 let modName = "none"
 

core/src/mindustry/core/Platform.java

@@ -117,9 +117,10 @@ public interface Platform{
      * @param cons Selection listener
      * @param open Whether to open or save files
      * @param extension File extension to filter
+     * @param title The title of the native dialog
      */
-    default void showFileChooser(boolean open, String extension, Cons<Fi> cons){
+    default void showFileChooser(boolean open, String title, String extension, Cons<Fi> cons){
-        new FileChooser(open ? "@open" : "@save", file -> file.extEquals(extension), open, file -> {
+        new FileChooser(title, file -> file.extEquals(extension), open, file -> {
             if(!open){
                 cons.get(file.parent().child(file.nameWithoutExtension() + "." + extension));
             }else{
@@ -128,6 +129,10 @@ public interface Platform{
         }).show();
     }
 
+    default void showFileChooser(boolean open, String extension, Cons<Fi> cons){
+        showFileChooser(open, open ? "@open": "@save", extension, cons);
+    }
+
     /**
      * Show a file chooser for multiple file types.
      * @param cons Selection listener

core/src/mindustry/mod/Scripts.java

@@ -4,7 +4,9 @@ import arc.*;
 import arc.assets.*;
 import arc.audio.*;
 import arc.files.*;
+import arc.func.*;
 import arc.mock.*;
+import arc.scene.ui.*;
 import arc.struct.*;
 import arc.util.*;
 import arc.util.Log.*;
@@ -116,6 +118,44 @@ public class Scripts implements Disposable{
         return sound;
     }
 
+    /** Ask the user to select a file to read for a certain purpose like "Please upload a sprite" */
+    public void readFile(String purpose, String ext, Cons<String> cons){
+        selectFile(true, purpose, ext, fi -> cons.get(fi.readString()));
+    }
+
+    /** readFile but for a byte[] */
+    public void readBinFile(String purpose, String ext, Cons<byte[]> cons){
+        selectFile(true, purpose, ext, fi -> cons.get(fi.readBytes()));
+    }
+
+    /** Ask the user to write a file. */
+    public void writeFile(String purpose, String ext, String contents){
+        if(contents == null) contents = "";
+        final String fContents = contents;
+        selectFile(false, purpose, ext, fi -> fi.writeString(fContents));
+    }
+
+    /** writeFile but for a byte[] */
+    public void writeBinFile(String purpose, String ext, byte[] contents){
+        if(contents == null) contents = new byte[0];
+        final byte[] fContents = contents;
+        selectFile(false, purpose, ext, fi -> fi.writeBytes(fContents));
+    }
+
+    private void selectFile(boolean open, String purpose, String ext, Cons<Fi> cons){
+        purpose = purpose.startsWith("@") ? Core.bundle.get(purpose.substring(1)) : purpose;
+        //add purpose and extension at the top
+        String title = Core.bundle.get(open ? "open" : "save") + " - " + purpose + " (." + ext + ")";
+        Vars.platform.showFileChooser(open, title, ext, fi -> {
+            try{
+                cons.get(fi);
+            }catch(Exception e){
+                Log.err("Failed to select file '@' for a mod", fi);
+                Log.err(e);
+            }
+        });
+    }
+
     //endregion
 
     public void run(LoadedMod mod, Fi file){

ios/src/mindustry/ios/IOSLauncher.java

@@ -42,7 +42,7 @@ public class IOSLauncher extends IOSApplication.Delegate{
         return new IOSApplication(new ClientLauncher(){
 
             @Override
-            public void showFileChooser(boolean open, String extension, Cons<Fi> cons){
+            public void showFileChooser(boolean open, String titleIgn, String extension, Cons<Fi> cons){
                 if(!open){ //when exporting, just share it.
                     //ask for export name
                     Core.input.getTextInput(new TextInput(){{