From f0494218313370d8f6da7d7b46af026e61cec899 Mon Sep 17 00:00:00 2001
From: ZZYZX <zzyzx@virtual>
Date: Sun, 4 Sep 2022 11:25:00 +0300
Subject: [PATCH] Modify to have one GetVertexZ rather than IsVertexZSet /
 GetVertexZ

---
 src/maploader/postprocessor.cpp              | 36 +++++++++-----------
 wadsrc/static/zscript/level_postprocessor.zs |  5 ++-
 2 files changed, 19 insertions(+), 22 deletions(-)

diff --git a/src/maploader/postprocessor.cpp b/src/maploader/postprocessor.cpp
index 4c0875dbb0..727fa053d9 100644
--- a/src/maploader/postprocessor.cpp
+++ b/src/maploader/postprocessor.cpp
@@ -443,30 +443,28 @@ DEFINE_ACTION_FUNCTION(DLevelPostProcessor, GetVertexZ)
 	PARAM_UINT(vertex);
 	PARAM_INT(planeval);
 	
-	if (vertex < self->Level->vertexes.Size() && vertex < self->loader->vertexdatas.Size())
-	{
-		vertexdata_t& data = self->loader->vertexdatas[vertex];
-		double value = planeval ? data.zFloor : data.zCeiling;
-		ACTION_RETURN_FLOAT(value);
-	}
-
-	ACTION_RETURN_FLOAT(0);
-}
-
-DEFINE_ACTION_FUNCTION(DLevelPostProcessor, IsVertexZSet)
-{
-	PARAM_SELF_PROLOGUE(DLevelPostProcessor);
-	PARAM_UINT(vertex);
-	PARAM_INT(planeval);
+	double value = 0;
+	bool isset = false;
 
 	if (vertex < self->Level->vertexes.Size() && vertex < self->loader->vertexdatas.Size())
 	{
 		vertexdata_t& data = self->loader->vertexdatas[vertex];
-		bool value = data.flags & (planeval ? VERTEXFLAG_ZFloorEnabled : VERTEXFLAG_ZCeilingEnabled);
-		ACTION_RETURN_BOOL(value);
+		value = planeval ? data.zFloor : data.zCeiling;
+		isset = data.flags & (planeval ? VERTEXFLAG_ZFloorEnabled : VERTEXFLAG_ZCeilingEnabled);
 	}
 
-	ACTION_RETURN_BOOL(false);
+	if (numret > 1)
+	{
+		numret = 2;
+		ret[1].SetInt(isset);
+	}
+
+	if (numret > 0)
+	{
+		ret[0].SetFloat(value);
+	}
+
+	return numret;
 }
 
 DEFINE_ACTION_FUNCTION(DLevelPostProcessor, SetVertexZ)
@@ -493,7 +491,7 @@ DEFINE_ACTION_FUNCTION(DLevelPostProcessor, SetVertexZ)
 	return 0;
 }
 
-DEFINE_ACTION_FUNCTION(DLevelPostProcessor, UnsetVertexZ)
+DEFINE_ACTION_FUNCTION(DLevelPostProcessor, RemoveVertexZ)
 {
 	PARAM_SELF_PROLOGUE(DLevelPostProcessor);
 	PARAM_UINT(vertex);
diff --git a/wadsrc/static/zscript/level_postprocessor.zs b/wadsrc/static/zscript/level_postprocessor.zs
index 266ad6404c..be9507da96 100644
--- a/wadsrc/static/zscript/level_postprocessor.zs
+++ b/wadsrc/static/zscript/level_postprocessor.zs
@@ -47,10 +47,9 @@ class LevelPostProcessor native play
 	protected native void SetThingStringArgument(uint thing, Name value);
 
 	protected native void SetVertex(uint vertex, double x, double y);
-	protected native double GetVertexZ(uint vertex, int plane);
-	protected native bool IsVertexZSet(uint vertex, int plane);
+	protected native double, bool GetVertexZ(uint vertex, int plane);
 	protected native void SetVertexZ(uint vertex, int plane, double z);
-	protected native void UnsetVertexZ(uint vertex, int plane);
+	protected native void RemoveVertexZ(uint vertex, int plane);
 	protected native void SetLineVertexes(uint Line, uint v1, uint v2);
 	protected native void FlipLineSideRefs(uint Line);
 	protected native void SetLineSectorRef(uint line, uint side, uint sector);