From ba3925201819b960cf481a7a7d5b0df4a4553ccb Mon Sep 17 00:00:00 2001
From: CobaltXII <sidatt64@gmail.com>
Date: Sat, 5 Jan 2019 10:22:42 -0500
Subject: [PATCH] Fire cannot be placed in certain places

---
 src/main.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/main.cpp b/src/main.cpp
index 80a6a68..2064c10 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -856,6 +856,21 @@ int main(int argc, char** argv)
 										}
 									}
 								}
+								else if (place_id == id_fire)
+								{
+									// Fire can only be placed on top of solid
+									// blocks; that is, blocks that are not
+									// slabs, crops, crosses or fire.
+
+									block_id fire_below = the_world->get_id_safe(px, py + 1, pz);
+
+									if (!is_slab(fire_below) && !is_crop(fire_below) && !is_cross(fire_below) && !is_fire(fire_below))
+									{
+										the_accessor->set_id_safe(px, py, pz, place_id);
+
+										block_timer = 10;
+									}
+								}
 								else
 								{
 									the_accessor->set_id_safe(px, py, pz, place_id);