Logic constant optimizations / Display admins on top

core/src/mindustry/logic/GlobalConstants.java

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+package mindustry.logic;
+
+import arc.struct.*;
+import mindustry.*;
+import mindustry.content.*;
+import mindustry.logic.LExecutor.*;
+import mindustry.type.*;
+import mindustry.world.*;
+
+/** Stores global constants for logic processors. */
+public class GlobalConstants{
+    private ObjectIntMap<String> namesToIds = new ObjectIntMap<>();
+    private Seq<Var> vars = new Seq<>(Var.class);
+
+    public void init(){
+        put("the end", null);
+        //add default constants
+        put("false", 0);
+        put("true", 1);
+        put("null", null);
+
+        //store base content
+
+        for(Item item : Vars.content.items()){
+            put("@" + item.name, item);
+        }
+
+        for(Liquid liquid : Vars.content.liquids()){
+            put("@" + liquid.name, liquid);
+        }
+
+        for(Block block : Vars.content.blocks()){
+            if(block.synthetic()){
+                put("@" + block.name, block);
+            }
+        }
+
+        //used as a special value for any environmental solid block
+        put("@solid", Blocks.stoneWall);
+        put("@air", Blocks.air);
+
+        for(UnitType type : Vars.content.units()){
+            put("@" + type.name, type);
+        }
+
+        //store sensor constants
+        for(LAccess sensor : LAccess.all){
+            put("@" + sensor.name(), sensor);
+        }
+    }
+
+    /** @return a constant ID > 0 if there is a constant with this name, otherwise -1. */
+    public int get(String name){
+        return namesToIds.get(name, -1);
+    }
+
+    /** @return a constant variable by ID. ID is not bound checked and must be positive. */
+    public Var get(int id){
+        return vars.items[id];
+    }
+
+    /** Adds a constant value by name. */
+    public Var put(String name, Object value){
+        Var var = new Var(name);
+        var.constant = true;
+        if(value instanceof Number num){
+            var.numval = num.doubleValue();
+        }else{
+            var.isobj = true;
+            var.objval = value;
+        }
+
+        int index = vars.size;
+        namesToIds.put(name, index);
+        vars.add(var);
+        return var;
+    }
+}