added enable_build_where_you_stand option

Signed-off-by: Craig Robbins <kde.psych@gmail.com>

minetest.conf.example

@@ -62,6 +62,9 @@
 #keymap_quicktune_dec = KEY_NEXT
 #keymap_quicktune_inc = KEY_PRIOR
 
+#if set to true, you can place blocks at the position (feet + eye level) where you stand; this is helpful when working with nodeboxes
+#enable_build_where_you_stand = false
+
 # Minimum FPS
 # The amount of rendered stuff is dynamically set according to this
 #wanted_fps = 30

src/defaultsettings.cpp

@@ -63,6 +63,7 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("keymap_camera_mode", "KEY_F7");
 	settings->setDefault("keymap_increase_viewing_range_min", "+");
 	settings->setDefault("keymap_decrease_viewing_range_min", "-");
+	settings->setDefault("enable_build_where_you_stand", "false" );
 	settings->setDefault("3d_mode", "none");
 	settings->setDefault("3d_paralax_strength", "0.025");
 	settings->setDefault("aux1_descends", "false");

src/game.cpp

@@ -967,6 +967,7 @@ bool nodePlacementPrediction(Client &client,
 			// Dont place node when player would be inside new node
 			// NOTE: This is to be eventually implemented by a mod as client-side Lua
 			if (!nodedef->get(n).walkable ||
+					g_settings->getBool("enable_build_where_you_stand") ||
 					(client.checkPrivilege("noclip") && g_settings->getBool("noclip")) ||
 					(nodedef->get(n).walkable &&
 					 neighbourpos != player->getStandingNodePos() + v3s16(0, 1, 0) &&