the vent

core/src/mindustry/content/Blocks.java

@@ -40,7 +40,7 @@ public class Blocks implements ContentList{
     redmat, bluemat,
     stoneWall, dirtWall, sporeWall, iceWall, daciteWall, sporePine, snowPine, pine, shrubs, whiteTree, whiteTreeDead, sporeCluster,
     redweed, purbush, coralChunk, yellowCoral,
-    regolithWall, yellowStoneWall, rhyoliteWall, carbonWall, redIceWall, ferricStoneWall, beryllicStoneWall,
+    regolithWall, yellowStoneWall, rhyoliteWall, steamVent, carbonWall, redIceWall, ferricStoneWall, beryllicStoneWall,
     ferricStone, ferricCraters, carbonStone, beryllicStone,
     iceSnow, sandWater, darksandWater, duneWall, sandWall, moss, sporeMoss, shale, shaleWall, grass, salt,
     shaleBoulder, sandBoulder, daciteBoulder, boulder, snowBoulder, basaltBoulder, carbonBoulder, ferricBoulder, beryllicBoulder,
@@ -334,6 +334,10 @@ public class Blocks implements ContentList{
             blendGroup = rhyolite;
         }};
 
+        steamVent = new SteamVent("steam-vent"){{
+            parent = blendGroup = rhyolite;
+        }};
+
         regolith = new Floor("regolith"){{
             attributes.set(Attribute.water, -1f);
         }};

core/src/mindustry/content/Fx.java

@@ -941,6 +941,17 @@ public class Fx{
         });
     }),
 
+    ventSteam = new Effect(140f, e -> {
+        color(Pal.vent, e.fslope() * 0.85f);
+
+        float length = 3f + e.finpow() * 10f;
+        rand.setSeed(e.id);
+        for(int i = 0; i < rand.random(3, 5); i++){
+            v.trns(rand.random(360f), rand.random(length));
+            Fill.circle(e.x + v.x, e.y + v.y, rand.random(1.2f, 3.5f) + e.fslope() * 1.1f);
+        }
+    }),
+
     vapor = new Effect(110f, e -> {
         color(e.color);
         alpha(e.fout());