Just moving some code around in preparation to adding a "lateral shunt" option to the auto-controller

description.txt

@@ -0,0 +1,4 @@
+digtron - a modular tunnel boring/building machine for minetest, v0.7 - 2017-01-08
+
+Forum : https://forum.minetest.net/viewtopic.php?f=9&t=16295
+github: https://github.com/FaceDeer/digtron/

node_controllers.lua

@@ -49,7 +49,7 @@ minetest.register_node("digtron:controller", {
 			return
 		end
 	
-		local newpos, status, return_code = digtron.execute_cycle(pos, clicker)
+		local newpos, status, return_code = digtron.execute_dig_cycle(pos, clicker)
 		
 		meta = minetest.get_meta(newpos)
 		if status ~= nil then
@@ -90,7 +90,7 @@ digtron.auto_cycle = function(pos)
 		return
 	end
 	
-	local newpos, status, return_code = digtron.execute_cycle(pos, player)
+	local newpos, status, return_code = digtron.execute_dig_cycle(pos, player)
 	
 	local cycle = 0
 	if vector.equals(pos, newpos) then
@@ -222,69 +222,12 @@ minetest.register_node("digtron:pusher", {
 			return
 		end
 
-		local layout = digtron.get_all_digtron_neighbours(pos, clicker)
-		if layout.all == nil then
-			-- get_all_digtron_neighbours returns nil if the digtron array touches unloaded nodes, too dangerous to do anything in that situation. Abort.
-			minetest.sound_play("buzzer", {gain=0.5, pos=pos})
-			meta:set_string("infotext", "Digtron is adjacent to unloaded nodes.")
-			return
-		end
+		local newpos, status_text, return_code = digtron.execute_move_cycle(pos, clicker)
+		meta:set_string("infotext", status_text)
 		
-		if layout.traction * digtron.traction_factor < table.getn(layout.all) then
-			-- digtrons can't fly
-			minetest.sound_play("squeal", {gain=1.0, pos=pos})
-			meta:set_string("infotext", string.format("Digtron has %d nodes but only enough traction to move %d nodes.", table.getn(layout.all), layout.traction * digtron.traction_factor))
-			return
-		end
-
-		local facing = minetest.get_node(pos).param2
-		local controlling_coordinate = digtron.get_controlling_coordinate(pos, facing)
-		
-		local nodes_dug = Pointset.create() -- empty set, we're not digging anything
-
-		-- test if any digtrons are obstructed by non-digtron nodes that haven't been marked
-		-- as having been dug.
-		local can_move = true
-		for _, location in pairs(layout.all) do
-			local newpos = digtron.find_new_pos(location, facing)
-			if not digtron.can_move_to(newpos, layout.protected, nodes_dug) then
-				can_move = false
-			end
-		end
-		
-		if not can_move then
-			-- mark this node as waiting, will clear this flag in digtron.cycle_time seconds
-			meta:set_string("waiting", "true")
-			minetest.get_node_timer(pos):start(digtron.cycle_time)
-			minetest.sound_play("squeal", {gain=1.0, pos=pos})
-			minetest.sound_play("buzzer", {gain=0.5, pos=pos})
-			meta:set_string("infotext", "Digtron is obstructed.")
-			return --Abort
-		end
-
-		meta:set_string("infotext", nil)
-		minetest.sound_play("truck", {gain=1.0, pos=pos})
-	
-		-- if the player is standing within the array or next to it, move him too.
-		local player_pos = clicker:getpos()
-		local move_player = false
-		if player_pos.x >= layout.extents.min_x - 1 and player_pos.x <= layout.extents.max_x + 1 and
-		   player_pos.y >= layout.extents.min_y - 1 and player_pos.y <= layout.extents.max_y + 1 and
-		   player_pos.z >= layout.extents.min_z - 1 and player_pos.z <= layout.extents.max_z + 1 then
-			move_player = true
-		end
-			
-		--move the array
-		digtron.move_digtron(facing, layout.all, layout.extents, nodes_dug)
-		local oldpos = {x=pos.x, y=pos.y, z=pos.z}
-		pos = digtron.find_new_pos(pos, facing)
-		if move_player then
-			clicker:moveto(digtron.find_new_pos(player_pos, facing), true)
-		end
-		
-		-- Start the delay before digtron can run again. Do this after moving the array or pos will be wrong.
-		minetest.get_meta(pos):set_string("waiting", "true")
-		minetest.get_node_timer(pos):start(digtron.cycle_time)
+		-- Start the delay before digtron can run again.
+		minetest.get_meta(newpos):set_string("waiting", "true")
+		minetest.get_node_timer(newpos):start(digtron.cycle_time)
 	end,
 	
 	on_timer = function(pos, elapsed)

sounds/license.txt

@@ -3,12 +3,12 @@ The sounds in this folder were sampled from source .wavs from Freesound.org. Spe
 buzzer.ogg - https://freesound.org/people/hypocore/sounds/164090/ - public domain via CC 1.0 by hypocore
 construction.ogg - https://www.freesound.org/people/mediapetros/sounds/109117/ - under the CC BY 3.0 license by mediapetros
 dingding.ogg - https://www.freesound.org/people/JohnsonBrandEditing/sounds/173932/ public domain via CC 1.0 by JohnsonBrandEditing
-squeal.ogg - https://www.freesound.org/people/RutgerMuller/sounds/104026/ public domain via CC 1.0 by RutgerMuller
 honk.ogg - https://freesound.org/people/bigmanjoe/sounds/349922/ public domain via CC 1.0 by bigmanjoe
-truck.ogg - https://www.freesound.org/people/jberkuta14/sounds/134898/ public domain via CC 1.0 by jberkuta14
 sploosh.ogg - https://www.freesound.org/people/mr_marcello/sounds/257609/ public domain via CC 1.0 by mr_marcello
-woopwoopwoop.ogg - https://www.freesound.org/people/gregconquest/sounds/188012/ public domain via CC 1.0 by gregconquest
+squeal.ogg - https://www.freesound.org/people/RutgerMuller/sounds/104026/ public domain via CC 1.0 by RutgerMuller
+truck.ogg - https://www.freesound.org/people/jberkuta14/sounds/134898/ public domain via CC 1.0 by jberkuta14
 whirr.ogg - https://www.freesound.org/people/daveincamas/sounds/25034/ - under the CC BY 3.0 license by daveincamas
+woopwoopwoop.ogg - https://www.freesound.org/people/gregconquest/sounds/188012/ public domain via CC 1.0 by gregconquest
 
 
 Creative Commons Attribution 3.0 license:

util_execute_cycle.lua

@@ -39,6 +39,32 @@ local burn_smoke = function(pos, amount)
 	}
 end
 
+--Performs various tests on a layout to play warning noises and see if Digtron can move at all.
+local function neighbour_test(layout, status_text)
+	if layout.all == nil then
+		-- get_all_digtron_neighbours returns nil if the digtron array touches unloaded nodes, too dangerous to do anything in that situation. Abort.
+		minetest.sound_play("buzzer", {gain=0.25, pos=layout.controller})
+		return "Digtron is adjacent to unloaded nodes.\n" .. status_text, 1
+	end
+	
+	if layout.water_touching == true then
+		minetest.sound_play("sploosh", {gain=1.0, pos=layout.controller})
+	end
+	
+	if layout.lava_touching == true then
+		minetest.sound_play("woopwoopwoop", {gain=1.0, pos=layout.controller})
+	end	
+	
+	if layout.traction * digtron.traction_factor < table.getn(layout.all) then
+		-- digtrons can't fly
+		minetest.sound_play("squeal", {gain=1.0, pos=layout.controller})
+		return string.format("Digtron has %d nodes but only enough traction to move %d nodes.\n", table.getn(layout.all), layout.traction * digtron.traction_factor)
+			 .. status_text, 2
+	end
+
+	return status_text, 0
+end
+
 -- returns newpos, status string, and a return code indicating why the method returned (so the auto-controller can keep trying if it's due to unloaded nodes)
 -- 0 - success
 -- 1 - failed due to unloaded nodes
@@ -48,31 +74,18 @@ end
 -- 5 - unknown builder error during testing
 -- 6 - builder with unset output
 -- 7 - insufficient builder materials in inventory
-digtron.execute_cycle = function(pos, clicker)
+digtron.execute_dig_cycle = function(pos, clicker)
 	local meta = minetest.get_meta(pos)
 	local fuel_burning = meta:get_float("fuel_burning") -- get amount of burned fuel left over from last cycle
 	local status_text = string.format("Heat remaining in controller furnace: %d", fuel_burning)
 	
 	local layout = digtron.get_all_digtron_neighbours(pos, clicker)
-	if layout.all == nil then
-		-- get_all_digtron_neighbours returns nil if the digtron array touches unloaded nodes, too dangerous to do anything in that situation. Abort.
-		minetest.sound_play("buzzer", {gain=0.25, pos=pos})
-		return pos, "Digtron is adjacent to unloaded nodes.\n" .. status_text, 1
+
+	local status_text, return_code = neighbour_test(layout, status_text)
+	if return_code ~= 0 then
+		return pos, status_text, return_code
 	end
 	
-	if layout.water_touching == true then
-		minetest.sound_play("sploosh", {gain=1.0, pos=pos})
-	end
-	if layout.lava_touching == true then
-		minetest.sound_play("woopwoopwoop", {gain=1.0, pos=pos})
-	end	
-	if layout.traction * digtron.traction_factor < table.getn(layout.all) then
-		-- digtrons can't fly
-		minetest.sound_play("squeal", {gain=1.0, pos=pos})
-		return pos, string.format("Digtron has %d nodes but only enough traction to move %d nodes.\n", table.getn(layout.all), layout.traction * digtron.traction_factor)
-			 .. status_text, 2
-	end
-
 	local facing = minetest.get_node(pos).param2
 	local move_dir = minetest.facedir_to_dir(facing)
 	local controlling_coordinate = digtron.get_controlling_coordinate(pos, facing)
@@ -294,3 +307,61 @@ digtron.execute_cycle = function(pos, clicker)
 	end
 	return pos, status_text, 0
 end
+
+
+-- Simplified version of the above method that only moves, and doesn't execute diggers or builders.
+digtron.execute_move_cycle = function(pos, clicker)
+	local meta = minetest.get_meta(pos)
+	local layout = digtron.get_all_digtron_neighbours(pos, clicker)
+
+	local status_text = ""
+	local status_text, return_code = neighbour_test(layout, status_text)
+	if return_code ~= 0 then
+		return pos, status_text, return_code
+	end
+
+	local facing = minetest.get_node(pos).param2
+	local controlling_coordinate = digtron.get_controlling_coordinate(pos, facing)
+	
+	local nodes_dug = Pointset.create() -- empty set, we're not digging anything
+
+	-- test if any digtrons are obstructed by non-digtron nodes that haven't been marked
+	-- as having been dug.
+	local can_move = true
+	for _, location in pairs(layout.all) do
+		local newpos = digtron.find_new_pos(location, facing)
+		if not digtron.can_move_to(newpos, layout.protected, nodes_dug) then
+			can_move = false
+		end
+	end
+	
+	if not can_move then
+		-- mark this node as waiting, will clear this flag in digtron.cycle_time seconds
+		minetest.get_meta(pos):set_string("waiting", "true")
+		minetest.get_node_timer(pos):start(digtron.cycle_time)
+		minetest.sound_play("squeal", {gain=1.0, pos=pos})
+		minetest.sound_play("buzzer", {gain=0.5, pos=pos})
+		return pos, "Digtron is obstructed.\n" .. status_text, 3 --Abort, don't dig and don't build.
+	end
+
+	minetest.sound_play("truck", {gain=1.0, pos=pos})
+
+	-- if the player is standing within the array or next to it, move him too.
+	local player_pos = clicker:getpos()
+	local move_player = false
+	if player_pos.x >= layout.extents.min_x - 1 and player_pos.x <= layout.extents.max_x + 1 and
+	   player_pos.y >= layout.extents.min_y - 1 and player_pos.y <= layout.extents.max_y + 1 and
+	   player_pos.z >= layout.extents.min_z - 1 and player_pos.z <= layout.extents.max_z + 1 then
+		move_player = true
+	end
+		
+	--move the array
+	digtron.move_digtron(facing, layout.all, layout.extents, nodes_dug)
+	local oldpos = {x=pos.x, y=pos.y, z=pos.z}
+	pos = digtron.find_new_pos(pos, facing)
+	if move_player then
+		clicker:moveto(digtron.find_new_pos(player_pos, facing), true)
+	end
+	
+	return pos, "", 0
+end