Logic color unpacking (#10794)

* `unpackcolor`

* Add description

core/assets/bundles/bundle.properties

@@ -2488,6 +2488,7 @@ lst.explosion = Create an explosion at a location.
 lst.setrate = Set processor execution speed in instructions/tick.
 lst.fetch = Lookup units, cores, players or buildings by index.\nIndices start at 0 and end at their returned count.
 lst.packcolor = Pack [0, 1] RGBA components into a single number for drawing or rule-setting.
+lst.unpackcolor = Unpack RGBA components from a color that was packed using Pack Color.
 lst.setrule = Set a game rule.
 lst.flushmessage = Display a message on the screen from the text buffer.\nIf the success result variable is [accent]@wait[],\nwill wait until the previous message finishes.\nOtherwise, outputs whether displaying the message succeeded.
 lst.cutscene = Manipulate the player camera.

core/src/mindustry/logic/LExecutor.java

@@ -1216,8 +1216,7 @@ public class LExecutor{
             this.a = a;
         }
 
-        public PackColorI(){
+        public PackColorI(){}
-        }
 
         @Override
         public void run(LExecutor exec){
@@ -1225,6 +1224,29 @@ public class LExecutor{
         }
     }
 
+    public static class UnpackColorI implements LInstruction{
+        public LVar r, g, b, a, value;
+
+        public UnpackColorI(LVar r, LVar g, LVar b, LVar a, LVar value){
+            this.r = r;
+            this.g = g;
+            this.b = b;
+            this.a = a;
+            this.value = value;
+        }
+
+        public UnpackColorI(){}
+
+        @Override
+        public void run(LExecutor exec){
+            var color = Tmp.c1.fromDouble(value.num());
+            r.setnum(color.r);
+            g.setnum(color.g);
+            b.setnum(color.b);
+            a.setnum(color.a);
+        }
+    }
+
     public static class CutsceneI implements LInstruction{
         public CutsceneAction action = CutsceneAction.stop;
         public LVar p1, p2, p3, p4;

core/src/mindustry/logic/LStatements.java

@@ -897,6 +897,35 @@ public class LStatements{
         }
     }
 
+    @RegisterStatement("unpackcolor")
+    public static class UnpackColorStatement extends LStatement{
+        public String r = "r", g = "g", b = "b", a = "a", value = "color";
+
+        @Override
+        public void build(Table table){
+            fields(table, r, str -> r = str);
+            fields(table, g, str -> g = str);
+            fields(table, b, str -> b = str);
+            fields(table, a, str -> a = str);
+
+            row(table);
+
+            table.add(" = unpack ");
+
+            fields(table, value, str -> value = str);
+        }
+
+        @Override
+        public LInstruction build(LAssembler builder){
+            return new UnpackColorI(builder.var(r), builder.var(g), builder.var(b), builder.var(a), builder.var(value));
+        }
+
+        @Override
+        public LCategory category(){
+            return LCategory.operation;
+        }
+    }
+
     @RegisterStatement("end")
     public static class EndStatement extends LStatement{
         @Override