From b51738177e2dae60153a825e200ea9cdeb1cec99 Mon Sep 17 00:00:00 2001
From: paramat <mat.gregory@virginmedia.com>
Date: Wed, 8 Jul 2015 20:01:29 +0100
Subject: [PATCH] Biome API decorations: 'spawnby' searches a 3D neighbourhood
The neighbours checked are the 8 nodes horizontally surrounding the decoration base
and the 8 nodes horizontally surrounding the ground node below the decoration
---
doc/lua_api.txt | 4 +++-
src/mg_decoration.cpp | 13 +++++++++++--
2 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index 95b514a92..49292d2b4 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -3331,7 +3331,9 @@ Definition tables
-- ^ Number of nodes the decoration can be at maximum.
-- ^ If absent, the parameter 'height' is used as a constant.
spawn_by = "default:water",
- -- ^ Node that the decoration only spawns next to, in a 1-node square radius.
+ -- ^ Node that the decoration only spawns next to.
+ -- ^ The neighbours checked are the 8 nodes horizontally surrounding the lowest node of the
+ -- ^ decoration, and the 8 nodes horizontally surrounding the ground node below the decoration.
num_spawn_by = 1,
-- ^ Number of spawn_by nodes that must be surrounding the decoration position to occur.
-- ^ If absent or -1, decorations occur next to any nodes.
diff --git a/src/mg_decoration.cpp b/src/mg_decoration.cpp
index f133788de..0d6693929 100644
--- a/src/mg_decoration.cpp
+++ b/src/mg_decoration.cpp
@@ -246,7 +246,7 @@ bool DecoSimple::canPlaceDecoration(MMVManip *vm, v3s16 p)
return true;
int nneighs = 0;
- v3s16 dirs[8] = {
+ v3s16 dirs[16] = {
v3s16( 0, 0, 1),
v3s16( 0, 0, -1),
v3s16( 1, 0, 0),
@@ -254,7 +254,16 @@ bool DecoSimple::canPlaceDecoration(MMVManip *vm, v3s16 p)
v3s16( 1, 0, 1),
v3s16(-1, 0, 1),
v3s16(-1, 0, -1),
- v3s16( 1, 0, -1)
+ v3s16( 1, 0, -1),
+
+ v3s16( 0, 1, 1),
+ v3s16( 0, 1, -1),
+ v3s16( 1, 1, 0),
+ v3s16(-1, 1, 0),
+ v3s16( 1, 1, 1),
+ v3s16(-1, 1, 1),
+ v3s16(-1, 1, -1),
+ v3s16( 1, 1, -1)
};
// Check a Moore neighborhood if there are enough spawnby nodes
--
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