Add logic filter (#7251)

* logic filter

* bundles

* available in map editor

* @this = null

* generating only

* ensure not using net

---------

Co-authored-by: Anuken <arnukren@gmail.com>

core/src/mindustry/logic/LExecutor.java

@@ -60,7 +60,7 @@ public class LExecutor{
     public @Nullable LogicBuild build;
     public IntSet linkIds = new IntSet();
     public Team team = Team.derelict;
-    public boolean privileged = false;
+    public boolean privileged = false, isFilter = false;
 
     //yes, this is a minor memory leak, but it's probably not significant enough to matter
     protected static IntFloatMap unitTimeouts = new IntFloatMap();
@@ -1479,7 +1479,7 @@ public class LExecutor{
                             if(t == null) t = Team.derelict;
 
                             if(tile.block() != b || tile.team() != t){
-                                tile.setNet(b, t, Mathf.clamp(exec.numi(rotation), 0, 3));
+                                tile.setBlock(b, t, Mathf.clamp(exec.numi(rotation), 0, 3));
                             }
                         }
                     }

core/src/mindustry/maps/Maps.java

@@ -33,7 +33,7 @@ public class Maps{
     NoiseFilter::new, ScatterFilter::new, TerrainFilter::new, DistortFilter::new,
     RiverNoiseFilter::new, OreFilter::new, OreMedianFilter::new, MedianFilter::new,
     BlendFilter::new, MirrorFilter::new, ClearFilter::new, CoreSpawnFilter::new,
-    EnemySpawnFilter::new, SpawnPathFilter::new
+    EnemySpawnFilter::new, SpawnPathFilter::new, LogicFilter::new
     };
 
     /** List of all built-in maps. Filenames only. */

core/src/mindustry/maps/filters/LogicFilter.java

@@ -0,0 +1,82 @@
+package mindustry.maps.filters;
+
+import arc.scene.ui.layout.*;
+import mindustry.gen.*;
+import mindustry.logic.*;
+import mindustry.maps.filters.FilterOption.*;
+import mindustry.world.*;
+
+import static mindustry.Vars.*;
+
+public class LogicFilter extends GenerateFilter{
+    /** max available execution for logic filter */
+    public static int maxInstructionsExecution = 500 * 500 * 25;
+    public String code;
+    public boolean loop;
+    LExecutor executor;
+
+    @Override
+    public FilterOption[] options(){
+        return new FilterOption[]{
+            new FilterOption(){
+                final String name;
+                {
+                    name = "code";
+                }
+                @Override
+                public void build(Table table){
+                    table.button(b -> b.image(Icon.pencil).size(iconSmall), () -> {
+                        ui.logic.show(code, null, true, code -> LogicFilter.this.code = code);
+                    }).pad(4).margin(12f);
+
+                    table.add("@filter.option." + name);
+                }
+            },
+            new ToggleOption("loop", () -> loop, f -> loop = f)
+        };
+    }
+
+    @Override
+    public void apply(Tiles tiles, GenerateInput in){
+        executor = new LExecutor();
+        executor.privileged = true;
+        executor.isFilter = true;
+        configure(code);
+
+        //limited run
+        for(int i = 1; i < maxInstructionsExecution; i++){
+            if(!loop && (executor.counter.numval >= executor.instructions.length || executor.counter.numval < 0)) break;
+            executor.runOnce();
+        }
+    }
+
+    @Override
+    public char icon(){
+        return Iconc.blockMicroProcessor;
+    }
+
+    @Override
+    public boolean isPost(){
+        return true;
+    }
+
+    void configure(String code){
+        try{
+            //create assembler to store extra variables
+            LAssembler asm = LAssembler.assemble(code, true);
+
+            asm.putConst("@mapw", world.width());
+            asm.putConst("@maph", world.height());
+            asm.putConst("@links", executor.links.length);
+            asm.putConst("@ipt", 1);
+
+            asm.putConst("@thisx", 0);
+            asm.putConst("@thisy", 0);
+
+            executor.load(asm);
+        }catch(Exception e){
+            //handle malformed code and replace it with nothing
+            executor.load(LAssembler.assemble(code = "", true));
+        }
+    }
+}