From 0fd5c61c00819ae3eaf298739e8cf879e2d43820 Mon Sep 17 00:00:00 2001
From: ShadowNinja <shadowninja@minetest.net>
Date: Mon, 6 Jan 2014 21:17:19 -0500
Subject: Revert "Improve (re)spawn, add cache_block_before_spawn and
 max_spawn_height settings"

The commit didn't work because the blocks weren't loaded yet.

This reverts commit 22dbbf0a6fc9547f0dbdb7f6076337b8c6acd48b.

Conflicts:
	minetest.conf.example
---
 src/map.cpp | 78 +++++++++++++++++++++++++++----------------------------------
 1 file changed, 35 insertions(+), 43 deletions(-)

(limited to 'src/map.cpp')

diff --git a/src/map.cpp b/src/map.cpp
index 55f91c8a6..4d32ecdfe 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -3185,56 +3185,48 @@ void ServerMap::prepareBlock(MapBlock *block) {
 	}
 }
 
-/**
- * Get the ground level by searching for a non CONTENT_AIR node in a column from top to bottom
- */
-s16 ServerMap::findGroundLevel(v2s16 p2d, bool cacheBlocks)
+s16 ServerMap::findGroundLevel(v2s16 p2d)
 {
-	
-	s16 level;
-
-	// The reference height is the original mapgen height
-	s16 referenceHeight = m_emerge->getGroundLevelAtPoint(p2d);
-	s16 maxSearchHeight =  63 + referenceHeight;
-	s16 minSearchHeight = -63 + referenceHeight;
-	v3s16 probePosition(p2d.X, maxSearchHeight, p2d.Y);
-	v3s16 blockPosition = getNodeBlockPos(probePosition);
-	v3s16 prevBlockPosition = blockPosition;
-
-	// Cache the block to be inspected.
-	if(cacheBlocks) {
-		emergeBlock(blockPosition, true);
-	}
-
-	// Probes the nodes in the given column
-	for(; probePosition.Y > minSearchHeight; probePosition.Y--)
+#if 0
+	/*
+		Uh, just do something random...
+	*/
+	// Find existing map from top to down
+	s16 max=63;
+	s16 min=-64;
+	v3s16 p(p2d.X, max, p2d.Y);
+	for(; p.Y>min; p.Y--)
 	{
-		if(cacheBlocks) {
-			// Calculate the block position of the given node
-			blockPosition = getNodeBlockPos(probePosition); 
-
-			// If the node is in an different block, cache it
-			if(blockPosition != prevBlockPosition) {
-				emergeBlock(blockPosition, true);
-				prevBlockPosition = blockPosition;
-			}
-		}
-
-		MapNode node = getNodeNoEx(probePosition);
-		if (node.getContent() != CONTENT_IGNORE &&
-		    node.getContent() != CONTENT_AIR) {
+		MapNode n = getNodeNoEx(p);
+		if(n.getContent() != CONTENT_IGNORE)
 			break;
-		}
 	}
-
-	// Could not determine the ground. Use map generator noise functions.
-	if(probePosition.Y == minSearchHeight) {
-		level = referenceHeight; 
-	} else {
-		level = probePosition.Y;
+	if(p.Y == min)
+		goto plan_b;
+	// If this node is not air, go to plan b
+	if(getNodeNoEx(p).getContent() != CONTENT_AIR)
+		goto plan_b;
+	// Search existing walkable and return it
+	for(; p.Y>min; p.Y--)
+	{
+		MapNode n = getNodeNoEx(p);
+		if(content_walkable(n.d) && n.getContent() != CONTENT_IGNORE)
+			return p.Y;
 	}
 
+	// Move to plan b
+plan_b:
+#endif
+
+	/*
+		Determine from map generator noise functions
+	*/
+
+	s16 level = m_emerge->getGroundLevelAtPoint(p2d);
 	return level;
+
+	//double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
+	//return (s16)level;
 }
 
 bool ServerMap::loadFromFolders() {
-- 
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