Better implementation of #10047

core/assets/bundles/bundle.properties

@@ -2376,7 +2376,7 @@ 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.setrule = Set a game rule.
-lst.flushmessage = Display a message on the screen from the text buffer.\nWill wait until the previous message finishes.
+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.
 lst.setflag = Set a global flag that can be read by all processors.
 lst.getflag = Check if a global flag is set.

core/src/mindustry/logic/GlobalVars.java

@@ -27,7 +27,7 @@ public class GlobalVars{
     public static final Rand rand = new Rand();
 
     //non-constants that depend on state
-    private static LVar varTime, varTick, varSecond, varMinute, varWave, varWaveTime, varMapW, varMapH, varServer, varClient, varClientLocale, varClientUnit, varClientName, varClientTeam, varClientMobile;
+    private static LVar varTime, varTick, varSecond, varMinute, varWave, varWaveTime, varMapW, varMapH, varWait, varServer, varClient, varClientLocale, varClientUnit, varClientName, varClientTeam, varClientMobile;
 
     private ObjectMap<String, LVar> vars = new ObjectMap<>();
     private Seq<VarEntry> varEntries = new Seq<>();
@@ -73,6 +73,7 @@ public class GlobalVars{
 
         varMapW = putEntry("@mapw", 0);
         varMapH = putEntry("@maph", 0);
+        varWait = putEntry("@wait", null);
 
         putEntryOnly("sectionNetwork");
 
@@ -209,6 +210,10 @@ public class GlobalVars{
         }
     }
 
+    public LVar waitVar(){
+        return varWait;
+    }
+
     public Seq<VarEntry> getEntries(){
         return varEntries;
     }

core/src/mindustry/logic/LExecutor.java

@@ -42,7 +42,6 @@ public class LExecutor{
     maxDisplayBuffer = 1024,
     maxTextBuffer = 400;
 
-
     public LInstruction[] instructions = {};
     /** Non-constant variables used for network sync */
     public LVar[] vars = {};
@@ -1601,7 +1600,7 @@ public class LExecutor{
         public void run(LExecutor exec){
             //set default to success
             outSuccess.setnum(1);
-            if(headless && type != MessageType.mission) {
+            if(headless && type != MessageType.mission){
                 exec.textBuffer.setLength(0);
                 return;
             }
@@ -1611,8 +1610,14 @@ public class LExecutor{
                 type == MessageType.notify && ui.hudfrag.hasToast() ||
                 type == MessageType.toast && ui.hasAnnouncement()
             ){
-                //set outSuccess=false to let user retry.
+                //backwards compatibility; if it is @wait, block execution
-                outSuccess.setnum(0);
+                if(outSuccess == logicVars.waitVar()){
+                    exec.counter.numval--;
+                    exec.yield = true;
+                }else{
+                    //set outSuccess=false to let user retry.
+                    outSuccess.setnum(0);
+                }
                 return;
             }
 

core/src/mindustry/logic/LStatements.java

@@ -1594,7 +1594,7 @@ public class LStatements{
     @RegisterStatement("message")
     public static class FlushMessageStatement extends LStatement{
         public MessageType type = MessageType.announce;
-        public String duration = "3", outSuccess = "success";
+        public String duration = "3", outSuccess = "@wait";
 
         @Override
         public void build(Table table){
@@ -1616,9 +1616,11 @@ public class LStatements{
                 case announce, toast  -> {
                     table.add(" for ");
                     fields(table, duration, str -> duration = str);
-                    table.add(" secs ");
+                    table.add(" sec ");
                 }
             }
+            row(table);
+
             table.add(" success ");
             fields(table, outSuccess, str -> outSuccess = str);
         }