Added a raw portals mechanism, bugfixes and added texture for the anti-expropriation field

config.lua

@@ -0,0 +1,17 @@
+-- GUN CONFIGURATION --
+
+gsettings = {}
+-- gravity acceleration (metres/second^2)
+gsettings.SPLASH_STREAM_GRAVITY = 9.8
+
+-- speed of stream splash (metres/second)
+gsettings.SPLASH_STREAM_SPEED = 50
+
+-- lifetime of splash drop (seconds)
+gsettings.SPLASH_DROP_LIFETIME = 2
+
+-- splash stream collision box
+gsettings.SPLASH_STREAM_COLLISION_BOX = {-0.1, -0.1, -0.1, 0.1, 0.1, 0.1}
+
+-- splash drop collision box
+gsettings.SPLASH_DROP_COLLISION_BOX = {-0.05, -0.05, -0.05, 0.05, 0.05, 0.05}

depends.txt

@@ -1 +1 @@
- 
+default 

gun.lua

@@ -1,17 +1,34 @@
-local gun = {}
+-- PORTAL GUN --
 
-gun.SPLASH_STREAM_GRAVITY = 9.8
-gun.SPLASH_STREAM_SPEED = 50        -- metres/second
-gun.SPLASH_DROP_LIFETIME = 2		-- seconds
+gun = {}
 
-gun.generate_splash_bounces = function(pos, normal, splash_color)
+gun.generate_splash_particles = function(pos, normal, splash_color)
     local rand_amount = math.random(20, 25)
-    
-    local side = vector.rotate_around_axis({x=normal.x, y=0, z=normal.z}, {x=0, y=1, z=0}, math.pi/2)
-    
-    local signs = {-1, 1}
-    for i = 1, rand_amount do
-        local rand_pitch = math.rad(math.random(10, 45)) * signs[math.random(1, 2)]
+	
+	local min_vel_dir = vector.rotate(normal, {x=0, y=-math.pi/4, z=0})
+	local max_vel_dir = vector.rotate(normal, {x=-math.pi/4, y=math.pi/4, z=0})
+	
+	minetest.add_particlespawner({
+		amount = rand_amount,
+		time = 0.1,
+		minpos = pos,
+		maxpos = pos,
+		minvel = vector.multiply(min_vel_dir, 5),
+		maxvel = vector.multiply(max_vel_dir, 5),
+		minacc = {x=0, y=-gsettings.SPLASH_STREAM_GRAVITY, z=0},
+		maxacc = {x=0, y=-gsettings.SPLASH_STREAM_GRAVITY, z=0},
+		minexptime = 1.5,
+		maxexptime = 2.5,
+		minsize = 3,
+		maxsize = 3.5,
+		collisiondetection = false,
+		collision_removal = false,
+		object_collision = false,
+		texture = "portaltest_splash_drop.png^[multiply:" .. splash_color,
+		glow = 7
+	})
+    --[[for i = 1, rand_amount do
+        local rand_pitch = -math.rad(math.random(10, 45))
         local rand_yaw = math.rad(math.random(10, 45)) * signs[math.random(1, 2)]
         
         normal = vector.rotate_around_axis(normal, side, rand_pitch)
@@ -21,8 +38,8 @@ gun.generate_splash_bounces = function(pos, normal, splash_color)
         
         local splash_drop = minetest.add_entity(pos, "portaltest:splash_drop")
         splash_drop:set_properties({textures={"portaltest_splash_drop.png^[multiply:" .. splash_color}})
-        splash_drop:set_velocity(vector.multiply(res_dir, 10))
-    end
+        splash_drop:set_velocity(vector.multiply(res_dir, 4))
+    end]]
 end
 
 gun.bounce_splash_drop = function(drop, surface_normal)
@@ -31,7 +48,7 @@ gun.bounce_splash_drop = function(drop, surface_normal)
 	if not self then return end
 	
 	local new_vel = vector.multiply(self.last_velocity, -1)
-	local cross = vector.cross(new_vel, surface_normal)
+	local cross = vector.cross(surface_normal, new_vel)
 	new_vel = vector.rotate_around_axis(new_vel, cross, vector.angle(surface_normal, new_vel)*2)
 	
 	drop:set_velocity(new_vel)
@@ -40,7 +57,7 @@ end
 gun.global_step_through_players_with_guns = function()
     local players = minetest.get_connected_players()
     
-    for i, player in ipairs(players) do
+    for _, player in ipairs(players) do
         if player:get_wielded_item():get_name() == "portaltest:gun_empty" then
             local ctrls = player:get_player_control()
             local color = ""
@@ -55,13 +72,19 @@ gun.global_step_through_players_with_guns = function()
             
             player:set_wielded_item(ItemStack("portaltest:gun_" .. color))
             local pl_pos = player:get_pos()
-            local rel_offset_pos = vector.add(vector.new(0, 0, 1), vector.new(1, 0, 0))
+            local rel_offset_pos = vector.new(0.5, 0, 0)
+			rel_offset_pos.y = 0.5
             
-            rel_offset_pos = vector.rotate(rel_offset_pos, {x=player:get_look_vertical(), y=player:get_look_horizontal(), z=0})
+			local dir = player:get_look_dir()
+			local dir_rot = vector.dir_to_rotation(dir)
+            rel_offset_pos = vector.rotate(rel_offset_pos, dir_rot)
             local pos = vector.add(pl_pos, rel_offset_pos)
             local splash_stream = minetest.add_entity(pos, "portaltest:splash_stream")
             splash_stream:set_properties({textures={"portaltest_splash_stream.png^[multiply:" .. color}})
-            splash_stream:set_velocity(vector.multiply(player:get_look_dir(), gun.SPLASH_STREAM_SPEED))
+            splash_stream:set_velocity(vector.multiply(dir, gsettings.SPLASH_STREAM_SPEED))
+			
+			local self = splash_stream:get_luaentity()
+			self.stream_emitter = player:get_player_name()
                 
             minetest.after(0.5, function()
                 player:set_wielded_item(ItemStack("portaltest:gun_empty"))
@@ -70,6 +93,100 @@ gun.global_step_through_players_with_guns = function()
     end
 end
 
+gun.get_pointedthing_info = function(pos, dir, ray_length)
+	local pos2 = vector.add(pos, vector.multiply(dir, ray_length))
+	local raycast = minetest.raycast(pos, pos2)
+	
+	local target_pt
+	for pt in raycast do
+		if pt.type == "object" then
+			local self = pt.ref:get_luaentity()
+			if self then
+				minetest.debug("ray has intersected an object with name: " .. self.name)
+				if self.name ~= "portaltest:splash_stream" then
+					target_pt = pt
+					break
+				else
+					--minetest.debug("raycast: " .. self.name)
+				end
+			end
+		elseif pt.type == "node" then
+			minetest.debug("raycast has intersected a node with name: " .. minetest.get_node(pt.under).name)
+			target_pt = pt
+			break
+		end
+	end
+	
+	return target_pt
+end
+
+gun.update_player_portals_datas = function(player_meta)
+	local player_portals = minetest.deserialize(player_meta:get_string("portals"))
+	
+	if not player_portals or player_portals == {} then
+		return 
+	end
+	
+	local new_datas = {}
+	
+	for color, pos in pairs(player_portals) do
+		local actual_node = minetest.get_node(player_portals[color])
+		
+		if actual_node.name == "portaltest:portal_" .. color then
+			new_datas[color] = {x=pos.x, y=pos.y, z=pos.z}
+		end
+	end
+	
+	player_meta:set_string("portals", minetest.serialize(new_datas))
+end
+
+gun.place_portal = function(placer, pt, color, param2, dir_to_top)
+	local meta = placer:get_meta()
+	gun.update_player_portals_datas(meta)
+	local player_portals = minetest.deserialize(meta:get_string("portals"))
+							
+	if not player_portals or player_portals == {} then
+		player_portals = {}
+	end
+	
+	if portal.is_pos_busy_by_portal(pt.above) then
+		return
+	end
+
+	if player_portals[color] then
+		minetest.remove_node(player_portals[color])
+	end
+                                                     
+	player_portals[color] = pt.above
+                                                     
+	meta:set_string("portals", minetest.serialize(player_portals))
+                                                     
+	minetest.add_node(pt.above, {name = "portaltest:portal_" .. color, param2 = param2})
+                                                     
+	local setp_meta = minetest.get_meta(player_portals[color])
+							
+	local cp_pos
+							
+	if color == "orange" then
+		if player_portals["blue"] then
+			cp_pos = player_portals["blue"]
+		end
+	elseif color == "blue" then
+		if player_portals["orange"] then
+			cp_pos = player_portals["orange"]
+		end
+	end
+                                                     
+	if cp_pos then
+		setp_meta:set_string("connected_to", minetest.serialize(cp_pos))
+                                                     
+		local cp_meta = minetest.get_meta(cp_pos)
+		cp_meta:set_string("connected_to", minetest.serialize(player_portals[color]))
+	end
+	
+	setp_meta:set_string("dir_to_top", minetest.serialize(dir_to_top))
+end
+
 minetest.register_node("portaltest:gun_empty", {
     drawtype = "mesh",
     visual_scale = 0.5,
@@ -141,17 +258,108 @@ minetest.register_entity("portaltest:splash_stream", {
     visual_size = {x=1, y=1, z=1},
     physical = true,
     collide_with_objects = true,
-    collisionbox = {-0.2, -0.2, -0.2, 0.2, 0.2, 0.2},
+    collisionbox = gsettings.SPLASH_STREAM_COLLISION_BOX,
 	selectionbox = {0, 0, 0, 0, 0, 0},
     textures = {"portaltest_splash_stream.png"},
     backface_culling = false,
     glow = 7,
     on_activate = function(self, staticdata, dtime_s)
-        self.object:set_acceleration({x=0, y=-gun.SPLASH_STREAM_GRAVITY, z=0})
+		self.move_dir = vector.normalize(self.object:get_velocity())
     end,
     on_step = function(self, dtime, moveresult)
-        if moveresult.collides then
-            local colls = moveresult.collisions
+        if not moveresult.collides then
+			self.move_dir = vector.normalize(self.object:get_velocity())
+		else
+			local pos = self.object:get_pos()
+			local vel = self.object:get_velocity()
+			minetest.debug("cur_vel: " .. vector.length(vel))
+			local texture = self.object:get_properties().textures[1]
+			
+			self.object:remove()
+			--minetest.debug("self.last_velocity: " .. minetest.pos_to_string(self.last_velocity))
+			--minetest.debug("current velocity: " .. minetest.pos_to_string(vel))
+            
+			local pt
+			if vector.length(self.move_dir) == 0 then
+				pt = gun.get_pointedthing_info(pos, vector.normalize(vel), 1)
+			else
+				pt = gun.get_pointedthing_info(pos, self.move_dir, 1)
+			end
+										
+			if pt then
+				minetest.debug("\'pt\' is not nil!")
+				--minetest.debug("pt.type: " .. pt.type)
+				--minetest.debug("pt.intersection_normal: " .. minetest.pos_to_string(pt.intersection_normal))
+				--minetest.debug("pt.type: " .. pt.type)
+				local s, e = texture:find("%^%[multiply:", 1)
+				local color = texture:sub(e+1, texture:len())
+				local player = minetest.get_player_by_name(self.stream_emitter)
+				if pt.type == "node" then
+					if pt.intersection_normal.y == 0 then
+						-- Portal is placed on the wall
+						local node = minetest.get_node_or_nil(pt.under)
+						local node2 = minetest.get_node_or_nil(vector.new(pt.under.x, pt.under.y+1, pt.under.z))
+						
+						if (node and node.name == "portaltest:panel_mono") and 
+							(node2 and node2.name == "portaltest:panel_mono") and 
+							minetest.get_node({x=pt.above.x, y=pt.above.y+1, z=pt.above.z}).name == "air" then
+                                                     
+							gun.place_portal(player, pt, color, minetest.dir_to_facedir(pt.intersection_normal), {x=0, y=1, z=0})
+						end
+					else
+						-- Portal is placed on the floor/ceiling
+						local look_dir = player:get_look_dir()
+						local horiz_look_dir = vector.new(look_dir.x, 0, look_dir.z)
+						local x_horiz_dir = vector.new(look_dir.x, 0, 0)
+						local z_horiz_dir = vector.new(0, 0, look_dir.z)
+						local target_horiz_dir = vector.angle(x_horiz_dir, horiz_look_dir) < vector.angle(horiz_look_dir, z_horiz_dir) and x_horiz_dir or z_horiz_dir
+                                                     
+						local node = minetest.get_node_or_nil(pt.under)
+						local node2 = minetest.get_node_or_nil(vector.add(pt.under, target_horiz_dir))
+						local node3 = minetest.get_node_or_nil(vector.add(pt.under, vector.add(pt.intersection_normal, target_horiz_dir)))
+                                                     
+						if (node and node.name == "portaltest:panel_mono") and
+							(node2 and node2.name == "portaltest:panel_mono") and
+							(node3 and node3.name == "air") then
+                             
+							-- Keys are param2 values, values are corresponding directions
+							local y_up_rots = {
+								[6] = {x=0, y=0, z=1},
+								[8] = {x=0, y=0, z=-1},
+								[15] = {x=1, y=0, z=0},
+								[17] = {x=-1, y=0, z=0}
+							}
+                                                     
+							local y_down_rots = {
+								[4] = {x=0, y=0, z=-1},
+								[10] = {x=0, y=0, z=1},
+								[13] = {x=-1, y=0, z=0},
+								[19] = {x=1, y=0, z=0}
+							}
+                                  
+							local target_param2
+							local dir_to_top
+							
+							local nrmlzed_thd = vector.normalize(target_horiz_dir)
+							local target_y_rots = pt.intersection_normal.y == 1 and y_up_rots or y_down_rots
+                                                     
+							for p2, dir in pairs(target_y_rots) do
+								if vector.equals(nrmlzed_thd, dir) then
+									target_param2 = p2
+									dir_to_top = dir
+									break
+								end
+							end
+                                                     
+							gun.place_portal(player, pt, color, target_param2, dir_to_top)
+						end
+					end
+				end
+				
+				gun.generate_splash_particles(pt.intersection_point, pt.intersection_normal, color)
+                                                          
+			end
+            --[[local colls = moveresult.collisions
 			minetest.debug("moveresult.collisions: " .. #moveresult.collisions)
             
             local sum_normal = vector.new()
@@ -171,23 +379,23 @@ minetest.register_entity("portaltest:splash_stream", {
             local s, e = texture:find("%^%[multiply:", 1)
             gun.generate_splash_bounces(pos, sum_normal, texture:sub(e+1, texture:len()))
                                                           
-            self.object:remove()
+            self.object:remove()]]
         end
     end
 })
 
-minetest.register_entity("portaltest:splash_drop", {
+--[[minetest.register_entity("portaltest:splash_drop", {
     visual = "sprite",
     visual_size = {x=1, y=1, z=1},
     physical = true,
     collide_with_objects = true,
     textures = {"portaltest_splash_drop.png"},
-    collisionbox = {-0.05, -0.05, -0.05, 0.05, 0.05, 0.05},
+    collisionbox = gsettings.SPLASH_DROP_COLLISION_BOX,
 	selectionbox = {0, 0, 0, 0, 0, 0},
     backface_culling = false,
     glow = 7,
     on_activate = function(self, staticdata, dtime_s)
-        self.object:set_acceleration({x=0, y=-gun.SPLASH_STREAM_GRAVITY, z=0})
+        self.object:set_acceleration({x=0, y=-gsettings.SPLASH_STREAM_GRAVITY, z=0})
 		self.last_velocity = self.object:get_velocity()
 		self.dtime = 0
     end,
@@ -197,22 +405,24 @@ minetest.register_entity("portaltest:splash_drop", {
 		if not moveresult.collides then
 			self.last_velocity = self.object:get_velocity()
 		else
-			local pos = self.object:get_pos()
-			local vel = self.object:get_velocity()
-			local pos2 = vector.add(pos, vector.multiply(vel, dtime))
-			local raycast = minetest.raycast(pos, pos2)
-			local pt = raycast:next()
-		
-			if pt then
+			local min_cb_pos = {
+				x = gsettings.SPLASH_DROP_COLLISION_BOX[1],
+				y = gsettings.SPLASH_DROP_COLLISION_BOX[2],
+				z = gsettings.SPLASH_DROP_COLLISION_BOX[3]
+			}
+												
+			local pt = gun.get_pointedthing_info(self.object:get_pos(), self.last_velocity, 1, dtime)
+			
+			if pt and pt.intersection_normal then
 				gun.bounce_splash_drop(self.object, pt.intersection_normal)
 			end
         end
                                                    
-		if self.dtime >= gun.SPLASH_DROP_LIFETIME then
+		if self.dtime >= gsettings.SPLASH_DROP_LIFETIME then
 			self.object:remove()
 		end
     end    
-})
+})]]
 
 
 minetest.register_globalstep(function(dtime)

init.lua

@@ -1,3 +1,6 @@
 local modpath = minetest.get_modpath("portaltest")
 
+dofile(modpath .. "/config.lua")
 dofile(modpath .. "/gun.lua")
+dofile(modpath .. "/panels.lua")
+dofile(modpath .. "/portal.lua")

panels.lua

@@ -1,10 +1,8 @@
+-- WHITE PANELS FROM MOON ROCK -- 
+
 minetest.register_node("portaltest:panel_mono", {
     description = "Mono Panel",
-    drawtype = "normal",
-    tiles = {"portaltest_while_panel.png"},
-    paramtype = "light",
-    paramtype2 = "facedir",
-    sunlight_propagates = true,
-    groups = {cracky=1.5},
+    tiles = {"portaltest_white_panel.png"},
+    groups = {cracky=1.5, moonpanel = 1},
     sounds = default.node_sound_stone_defaults()
 }) 

portal.lua

@@ -1 +1,239 @@
- 
+-- PORTALS -- 
+
+portal = {}
+
+-- Return unit direction of node with position 'pos'.
+portal.dir = function(pos)
+	local node = minetest.get_node(pos)
+	local back_dir = minetest.facedir_to_dir(node.param2)
+	
+	local dir = vector.multiply(back_dir, -1)
+	
+	return dir
+end
+
+-- Rotates obj`s collision and selection boxes angles 'rot' (in radians).
+-- Rotation occurs relatively to obj`s box rotation!!!
+portal.rotate_entity_bounding_box = function(obj, rot)
+	if not obj:get_luaentity() then return end
+	
+	if not (math.deg(rot.x) % 90 == 0) or not (math.deg(rot.y) % 90 == 0) or not (math.deg(rot.z) % 90 == 0) then return end
+	
+	local def = obj:get_properties()
+	local colbox = def.collisionbox
+	local selbox = def.selectionbox
+	local new_colbox = {}
+	local new_selbox = {}
+	
+	new_colbox[1] = vector.rotate({x=colbox[1], y=colbox[2], z=colbox[3]}, rot)
+	new_colbox[2] = vector.rotate({x=colbox[4], y=colbox[5], z=colbox[6]}, rot)
+	
+	new_selbox[1] = vector.rotate({x=selbox[1], y=selbox[2], z=selbox[3]}, rot)
+	new_selbox[2] = vector.rotate({x=selbox[4], y=selbox[5], z=selbox[6]}, rot)
+	
+	local res_colbox = {
+		new_colbox[1].x, new_colbox[1].y, new_colbox[1].z,
+		new_colbox[2].x, new_colbox[2].y, new_colbox[2].z
+	}
+	
+	local res_selbox = {
+		new_selbox[1].x, new_selbox[1].y, new_selbox[1].z,
+		new_selbox[2].x, new_selbox[2].y, new_selbox[2].z
+	}
+	
+	return res_colbox, res_selbox
+end
+
+-- Called each the node timer step. 
+--If there are objects within 'catch_box' box and their collision boxes are located at 0.1 distance to the portal surface, then teleport them saving their impulse.
+portal.teleport_entity = function(pos)
+	local connected_to = minetest.deserialize(minetest.get_meta(pos):get_string("connected_to"))
+	--minetest.debug("connected_to: " .. (connected_to and minetest.pos_to_string(connected_to) or tostring(nil)))
+	
+	if not connected_to then
+		--minetest.debug("Nothing can be teleported at the moment as the portal at " .. minetest.pos_to_string(pos) .. " is unconnected!")
+		return
+	end
+	
+	local pdir = minetest.facedir_to_dir(minetest.get_node(pos).param2)
+	-- Catch_box coordinates are relative to the node`s origin (pos)
+	local catch_box = {vector.new(-0.4, -0.4, -0.5), vector.new(0.4, 1.4, -0.5)}
+	local pdir_rot = vector.dir_to_rotation(pdir)
+	
+	catch_box[1] = vector.rotate(catch_box[1], pdir_rot)
+	catch_box[2] = vector.add(vector.rotate(catch_box[2], pdir_rot), vector.multiply(pdir, 1.45))
+	minetest.debug("catch_box: [1]=" .. minetest.pos_to_string(vector.add(pos, catch_box[1])) .. ", [2]=" .. minetest.pos_to_string(vector.add(pos, catch_box[2])))
+	
+	local catched_objs = minetest.get_objects_in_area(vector.add(pos, catch_box[1]), vector.add(pos, catch_box[2]))
+	--minetest.debug("#catched_objs: " .. #catched_objs)
+	
+	local iter_func = function(obj)
+		local centre_point = vector.add(pos, vector.divide(vector.add(catch_box[1], vector.rotate(vector.new(0.4, 1.4, -0.5), pdir_rot)), 2))
+		--minetest.debug("centre_point: " .. minetest.pos_to_string(centre_point))
+		local epos_dir = vector.subtract(obj:get_pos(), centre_point)
+		
+		--[[local origin_epos_dir = vector.rotate(epos_dir, vector.multiply(vector.dir_to_rotation(epos_dir), -1))
+		local epos_horiz_dir = vector.rotate(vector.new(origin_epos_dir.x, 0, origin_epos_dir.z), vector.dir_to_rotation(epos_dir))
+		local abs_epos_horiz_dir = vector.add(centre_point, epos_horiz_dir)]]
+		
+		local dist_to_epos = vector.length(epos_dir)*math.cos(vector.angle(epos_dir, pdir))
+		--minetest.debug("dist_to_epos: " .. dist_to_epos)
+		local rel_epos_horiz_dir = vector.subtract(epos_dir, vector.multiply(pdir, dist_to_epos))
+		local abs_epos_horiz_dir = vector.add(centre_point, vector.multiply(rel_epos_horiz_dir, -1))
+		
+		local raycast = minetest.raycast(abs_epos_horiz_dir, obj:get_pos())
+		
+		for pt in raycast do
+			if pt.type == "object" and pt.ref == obj then
+				local dist_to_psurface = vector.distance(abs_epos_horiz_dir, pt.intersection_point)
+				minetest.debug("dist_to_psurface: " .. dist_to_psurface)
+				
+				if not (dist_to_psurface < 0.15) then
+					return 
+				end
+			end
+		end
+	
+		local cportal_dir = minetest.facedir_to_dir(minetest.get_node(connected_to).param2)
+		minetest.debug("cportal_dir: " .. minetest.pos_to_string(cportal_dir))
+		local box_rot = vector.subtract(vector.dir_to_rotation(cportal_dir), vector.dir_to_rotation(pdir_rot))
+					
+		local new_colbox, new_selbox = portal.rotate_entity_bounding_box(obj, box_rot)
+		local target_pos = vector.add(connected_to, vector.multiply(vector.divide(cportal_dir, 2), dist_to_epos))
+		minetest.debug("target_pos: " .. minetest.pos_to_string(target_pos))
+		
+		if minetest.get_node(target_pos).name ~= "air" and not portal.is_pos_busy_by_portal(target_pos) then
+			return
+		end
+		
+		minetest.debug("set_pos()...")
+		obj:set_pos(target_pos)
+		obj:set_properties({collisionbox = new_colbox, selectionbox = new_selbox})
+		
+		if obj:is_player() then
+			obj:set_look_vertical(obj:get_look_vertical()+box_rot.x)
+			obj:set_look_horizontal(obj:get_look_horizontal()+box_rot.y)
+		else
+			obj:set_rotation(vector.add(obj:get_rotation(), box_rot))
+		end
+		
+		local cur_vel = obj:get_velocity()
+		local target_vel = vector.rotate(cur_vel, box_rot)
+		
+		obj:add_velocity(vector.subtract(target_vel, cur_vel))
+	end
+	
+	for _, obj in ipairs(catched_objs) do
+		iter_func(obj)
+	end
+end
+					
+portal.is_pos_busy_by_portal = function(pos)
+	local portal_pos = minetest.find_node_near(pos, 1, {"portaltest:portal_orange", "portaltest:portal_blue"}, true)
+	
+	if not portal_pos then return end
+	
+	local dir_to_top = minetest.deserialize(minetest.get_meta(portal_pos):get_string("dir_to_top"))
+	local portal_pos2 = vector.add(portal_pos, dir_to_top)
+	
+	return vector.distance(pos, portal_pos) < 0.5 or
+			vector.distance(pos, portal_pos2) < 0.5
+end
+
+portal.check_for_portal_footing = function(pos)
+	local dir_to_top = minetest.deserialize(minetest.get_meta(pos):get_string("dir_to_top"))
+	local back_dir = vector.multiply(minetest.facedir_to_dir(minetest.get_node(pos).param2), -1)
+	
+	local node1 = minetest.get_node(vector.add(pos, back_dir))
+	local node2 = minetest.get_node(vector.add(pos, vector.add(back_dir, dir_to_top)))
+	
+	if node1.name == "air" or node2.name == "air" then
+		minetest.remove_node(pos)
+	end
+end
+
+portal.remove = function(pos)
+	local connected_to = minetest.deserialize(minetest.get_meta(pos):get_string("connected_to"))
+	
+	if not connected_to or connected_to == {} then
+		return
+	end
+	
+	minetest.get_meta(connected_to):set_string("connected_to", "")
+	
+	minetest.remove_node(pos)
+end
+
+minetest.register_node("portaltest:portal_orange", {
+	description = "Portal",
+	drawtype = "mesh",
+	mesh = "portaltest_portal.b3d",
+	tiles = {"portaltest_orange_portal.png"},	
+	paramtype = "light",
+    paramtype2 = "facedir",
+    sunlight_propagates = true,
+	groups = {not_in_creative_inventory=1},
+	light_source = 14,
+	collision_box = {
+		type = "fixed",
+		fixed = {
+			{-0.5, -0.5, -0.5, 0.5, -0.4, -0.4},   	-- Bottom Box
+			{-0.5, -0.4, -0.5, -0.4, 1.4, -0.4},	-- Left Box
+			{0.4, -0.4, -0.5, 0.5, 1.4, -0.4},		-- Right Box
+			{-0.5, 1.4, -0.5, 0.5, 1.5, -0.4}		-- Top Box
+		}
+	},
+	selection_box = {
+		type = "fixed",
+		fixed = {0, 0, 0, 0, 0, 0}
+	},
+	on_construct = function(pos)
+		local timer = minetest.get_node_timer(pos)
+		timer:start(0.1)
+	end,
+	on_destruct = function(pos)
+		portal.remove(pos)
+	end,
+	on_timer = function(pos, elapsed)
+		portal.teleport_entity(pos)
+		portal.check_for_portal_footing(pos)
+		return true
+	end
+}) 
+
+minetest.register_node("portaltest:portal_blue", {
+	description = "Portal",
+	drawtype = "mesh",
+	mesh = "portaltest_portal.b3d",
+	tiles = {"portaltest_blue_portal.png"},	
+	paramtype = "light",
+    paramtype2 = "facedir",
+    sunlight_propagates = true,
+	groups = {not_in_creative_inventory=1},
+	light_source = 14,
+	collision_box = {
+		type = "fixed",
+		fixed = {
+			{-0.5, -0.5, -0.5, 0.5, -0.4, -0.4},   	-- Bottom Box
+			{-0.5, -0.4, -0.5, -0.4, 1.4, -0.4},	-- Left Box
+			{0.4, -0.4, -0.5, 0.5, 1.4, -0.4},		-- Right Box
+			{-0.5, 1.4, -0.5, 0.5, 1.5, -0.4}		-- Top Box
+		}
+	},
+	selection_box = {
+		type = "fixed",
+		fixed = {0, 0, 0, 0, 0, 0}
+	},
+	on_construct = function(pos)
+		local timer = minetest.get_node_timer(pos)
+		timer:start(0.1)
+	end,
+	on_destruct = function(pos)
+		portal.remove(pos)
+	end,
+	on_timer = function(pos, elapsed)
+		portal.teleport_entity(pos)
+		portal.check_for_portal_footing(pos)
+		return true
+	end
+})