Tree-like objective node structure (#7152)

* overall structure

* overall layout

* field interpreter

* less bloated UI

* scroll pan't

* strip off the 'Marker' suffix

* e

* all (hopefully all...) interpreters finished.

* onset

* two, four

* i don't understand how icon mappings work.

* separate remover and indexer

* some cleanups

* untested mobile support

* contrib

* ok anuke

* fix conflicts 2

* hidden

core/src/mindustry/ui/fragments/HudFragment.java

@@ -775,13 +775,21 @@ public class HudFragment{
             builder.setLength(0);
 
             //objectives override mission?
-            if(state.rules.objectives.size > 0){
-                var first = state.rules.objectives.first();
-                String text = first.text();
-                if(text != null){
-                    builder.append(text);
-                    return builder;
+            if(state.rules.objectives.any()){
+                boolean first = true;
+                for(var obj : state.rules.objectives){
+                    if(!obj.qualified()) continue;
+
+                    String text = obj.text();
+                    if(text != null){
+                        if(!first) builder.append('\n');
+                        builder.append(text);
+
+                        first = false;
+                    }
                 }
+
+                return builder;
             }
 
             //mission overrides everything
@@ -832,13 +840,24 @@ public class HudFragment{
         table.row();
 
         table.clicked(() -> {
-            if(state.rules.objectives.size > 0){
-                var first = state.rules.objectives.first();
-                var details = first.details();
-                if(details != null){
-                    //TODO this could be much better.
-                    ui.showInfo(details);
+            if(state.rules.objectives.any()){
+                StringBuilder text = new StringBuilder();
+
+                boolean first = true;
+                for(var obj : state.rules.objectives){
+                    if(!obj.qualified()) continue;
+
+                    String details = obj.details();
+                    if(details != null){
+                        if(!first) text.append('\n');
+                        text.append(details);
+
+                        first = false;
+                    }
                 }
+
+                //TODO this, as said before, could be much better.
+                ui.showInfo(text.toString());
             }
         });