From: Jeija <norrepli@gmail.com>
Date: Wed, 6 Feb 2013 18:36:14 +0000 (+0100)
Subject: Make raillike nodes connect to any other raillike nodes if both are in the group... 
X-Git-Tag: 0.4.7~14^2~11
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=3abbe7efd1d1da7c24725ae49c2df1013a7afb09;p=oweals%2Fminetest.git

Make raillike nodes connect to any other raillike nodes if both are in the group connect_to_raillike
---

diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index e2abcbfe7..bee247ca9 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -584,6 +584,8 @@ Special groups
                   dropped as an item. If the node is wallmounted the
                   wallmounted direction is checked.
 - soil: saplings will grow on nodes in this group
+- connect_to_raillike: makes nodes of raillike drawtype connect to
+                       other group members with same drawtype
 
 Known damage and digging time defining groups
 ----------------------------------------------
diff --git a/src/content_mapblock.cpp b/src/content_mapblock.cpp
index 155b39ab6..84408e776 100644
--- a/src/content_mapblock.cpp
+++ b/src/content_mapblock.cpp
@@ -1188,34 +1188,81 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			MapNode n_minus_z_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y+1, z-1));
 			MapNode n_plus_z_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y-1, z+1));
 			MapNode n_minus_z_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y-1, z-1));
-			
+
 			content_t thiscontent = n.getContent();
-			if(n_minus_x.getContent() == thiscontent)
+			std::string groupname = "connect_to_raillike"; // name of the group that enables connecting to raillike nodes of different kind
+			bool self_connect_to_raillike = ((ItemGroupList) nodedef->get(n).groups)[groupname] != 0;
+
+			if ((nodedef->get(n_minus_x).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_minus_x).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_minus_x.getContent() == thiscontent)
 				is_rail_x[0] = true;
-			if (n_minus_x_minus_y.getContent() == thiscontent)
+
+			if ((nodedef->get(n_minus_x_minus_y).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_minus_x_minus_y).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_minus_x_minus_y.getContent() == thiscontent)
 				is_rail_x_minus_y[0] = true;
-			if(n_minus_x_plus_y.getContent() == thiscontent)
+
+			if ((nodedef->get(n_minus_x_plus_y).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_minus_x_plus_y).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_minus_x_plus_y.getContent() == thiscontent)
 				is_rail_x_plus_y[0] = true;
 
-			if(n_plus_x.getContent() == thiscontent)
+			if ((nodedef->get(n_plus_x).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_plus_x).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_plus_x.getContent() == thiscontent)
 				is_rail_x[1] = true;
-			if (n_plus_x_minus_y.getContent() == thiscontent)
+
+			if ((nodedef->get(n_plus_x_minus_y).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_plus_x_minus_y).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_plus_x_minus_y.getContent() == thiscontent)
 				is_rail_x_minus_y[1] = true;
-			if(n_plus_x_plus_y.getContent() == thiscontent)
+
+			if ((nodedef->get(n_plus_x_plus_y).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_plus_x_plus_y).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_plus_x_plus_y.getContent() == thiscontent)
 				is_rail_x_plus_y[1] = true;
 
-			if(n_minus_z.getContent() == thiscontent)
+			if ((nodedef->get(n_minus_z).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_minus_z).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_minus_z.getContent() == thiscontent)
 				is_rail_z[0] = true;
-			if (n_minus_z_minus_y.getContent() == thiscontent)
+
+			if ((nodedef->get(n_minus_z_minus_y).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_minus_z_minus_y).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_minus_z_minus_y.getContent() == thiscontent)
 				is_rail_z_minus_y[0] = true;
-			if(n_minus_z_plus_y.getContent() == thiscontent)
+
+			if ((nodedef->get(n_minus_z_plus_y).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_minus_z_plus_y).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_minus_z_plus_y.getContent() == thiscontent)
 				is_rail_z_plus_y[0] = true;
 
-			if(n_plus_z.getContent() == thiscontent)
+			if ((nodedef->get(n_plus_z).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_plus_z).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_plus_z.getContent() == thiscontent)
 				is_rail_z[1] = true;
-			if (n_plus_z_minus_y.getContent() == thiscontent)
+
+			if ((nodedef->get(n_plus_z_minus_y).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_plus_z_minus_y).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_plus_z_minus_y.getContent() == thiscontent)
 				is_rail_z_minus_y[1] = true;
-			if(n_plus_z_plus_y.getContent() == thiscontent)
+
+			if ((nodedef->get(n_plus_z_plus_y).drawtype == NDT_RAILLIKE
+					&& ((ItemGroupList) nodedef->get(n_plus_z_plus_y).groups)[groupname] != 0
+					&& self_connect_to_raillike)
+					|| n_plus_z_plus_y.getContent() == thiscontent)
 				is_rail_z_plus_y[1] = true;
 
 			bool is_rail_x_all[] = {false, false};
@@ -1255,7 +1302,8 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 				if(is_rail_x_all[0] && is_rail_x_all[1])
 					angle = 90;
 				if(is_rail_z_all[0] && is_rail_z_all[1]){
-					if (n_minus_z_plus_y.getContent() == thiscontent) angle = 180;
+					if (is_rail_z_plus_y[0])
+						angle = 180;
 				}
 				else if(is_rail_x_all[0] && is_rail_z_all[0])
 					angle = 270;