fix #46

.luacheckrc

@@ -34,5 +34,6 @@ read_globals = {
 	"areas",
 	"ropes",
 	"sethome",
-	"drawers"
+	"drawers",
+	"player_monoids"
 }

mod.conf

@@ -1,2 +1,2 @@
 name = jumpdrive
-optional_depends = mesecons, travelnet, telemosaic, elevator, vacuum, locator, areas, protector, digilines, display_api, pipeworks, monitoring, beds, ropes, sethome, default, technic, drawers, textline
+optional_depends = mesecons, travelnet, telemosaic, elevator, vacuum, locator, areas, protector, digilines, display_api, pipeworks, monitoring, beds, ropes, sethome, default, technic, drawers, textline, player_monoids

move.lua

@@ -1,5 +1,5 @@
 
-
+local use_player_monoids = minetest.global_exists("player_monoids")
 local c_air = minetest.get_content_id("air")
 
 
@@ -99,13 +99,31 @@ jumpdrive.move = function(source_pos1, source_pos2, target_pos1, target_pos2)
 	-- move players
 	for _,player in ipairs(minetest.get_connected_players()) do
 		local playerPos = player:get_pos()
+		local player_name = player:get_player_name()
 
 		local xMatch = playerPos.x >= (source_pos1.x-0.5) and playerPos.x <= (source_pos2.x+0.5)
 		local yMatch = playerPos.y >= (source_pos1.y-0.5) and playerPos.y <= (source_pos2.y+0.5)
 		local zMatch = playerPos.z >= (source_pos1.z-0.5) and playerPos.z <= (source_pos2.z+0.5)
 
 		if xMatch and yMatch and zMatch and player:is_player() then
 			minetest.log("action", "[jumpdrive] moving player: " .. player:get_player_name())
+
+			-- override gravity if "player_monoids" is available
+			-- *should* execute before the player get moved
+			-- to prevent falling through not yet loaded blocks
+			if use_player_monoids then
+				-- modify gravity
+				player_monoids.gravity:add_change(player, 0.01, "jumpdrive:gravity")
+
+				minetest.after(3.0, function()
+					-- restore gravity
+					local player_deferred = minetest.get_player_by_name(player_name)
+					if player_deferred then
+						player_monoids.gravity:del_change(player_deferred, "jumpdrive:gravity")
+					end
+				end)
+			end
+
 			local new_player_pos = vector.add(playerPos, delta_vector)
 			player:set_pos( new_player_pos );