cleaned the code of bushes_classic into conventionnal LUA style, for readability

bushes_classic/nodes.lua

@@ -4,88 +4,90 @@ plantlife_bushes = {}
 
 -- TODO: add support for nodebreakers? those dig like mese picks
 plantlife_bushes.after_dig_node = function(pos, oldnode, oldmetadata, digger)
-	if( not( digger ) or not( pos ) or not (oldnode )) then
-		return nil;
+	if not (digger and pos and oldnode) then
+		return
 	end
 
 	-- find out which bush type we are dealing with
-	local bush_name   = "";
-	local can_harvest = false;
+	local bush_name   = ""
+	local can_harvest = false
 	
-	if( oldnode.name == 'bushes:fruitless_bush' ) then
+	if oldnode.name == "bushes:fruitless_bush" then
 		-- this bush has not grown fruits yet (but will eventually)
-		bush_name   = oldmetadata[ 'fields' ][ 'bush_type' ];
+		bush_name = oldmetadata.fields.bush_type
 		-- no fruits to be found, so can_harvest stays false
 	else
-		local name_parts = oldnode.name:split( ":" );
-		if( #name_parts >= 2 and name_parts[2]~=nil ) then
+		local name_parts = oldnode.name:split(":")
+		if #name_parts >= 2 and name_parts[2] ~= nil then
 
-			name_parts = name_parts[2]:split( "_" );
+			name_parts = name_parts[2]:split("_")
 
-			if( #name_parts >= 2 and name_parts[1]~=nil ) then
-				bush_name   = name_parts[1];
+			if #name_parts >= 2 and name_parts[1] ~= nil then
+				bush_name = name_parts[1]
 				-- this bush really carries fruits
-				can_harvest = true;
+				can_harvest = true
 			end
 		end
 	end
 
 	-- find out which tool the digger was wielding (if any)
-	local toolstack    = digger:get_wielded_item();
-	local capabilities = toolstack:get_tool_capabilities();
+	local toolstack = digger:get_wielded_item()
+	local capabilities = toolstack:get_tool_capabilities()
 
 	-- what the player will get
-	local harvested    = "";
-	local amount       = "";
+	local harvested
 
 	-- failure to find out what the tool can do: destroy the bush and return nothing
-	if( not( capabilities["groupcaps"] )) then
-		return nil;
+	local groupcaps = capabilities.groupcaps
+	if not groupcaps then
+		return
 
 	-- digging with the hand or something like that
-	elseif(	capabilities["groupcaps"]["snappy"] ) then
+	elseif groupcaps.snappy then
 
 		-- plant a new bush without fruits
-		minetest.set_node(pos,{type='node',name='bushes:fruitless_bush'})
-		local meta = minetest.get_meta( pos );
-		meta:set_string( 'bush_type', bush_name ); 
+		minetest.set_node(pos, {type = "node", name = "bushes:fruitless_bush"})
+		local meta = minetest.get_meta(pos)
+		meta:set_string('bush_type', bush_name)
 
 		-- construct the stack of fruits the player will get
 		-- only bushes that have grown fruits can actually give fruits
-		if( can_harvest == true ) then
-			amount    = "4";
-			harvested = "bushes:"..bush_name.." "..amount;
+		if can_harvest then
+			local amount = "4"
+			harvested = "bushes:" .. bush_name .. " " .. amount
 		end
 
 	-- something like a shovel
-	elseif( capabilities["groupcaps"]["crumbly"] ) then
+	elseif groupcaps.crumbly then
 
 		-- with a chance of 1/3, return 2 bushes
-		if( math.random(1,3)==1 ) then
-			amount = "2";
+		local amount
+		if math.random(1,3) == 1 then
+			amount = "2"
 		else
-			amount = "1";
+			amount = "1"
 		end
 		-- return the bush itself
-		harvested = "bushes:" .. bush_name .. "_bush "..amount;
+		harvested = "bushes:" .. bush_name .. "_bush "..amount
 
 	-- something like an axe
-	elseif( capabilities["groupcaps"]["choppy"] ) then
+	elseif groupcaps.choppy then
 
 		-- the amount of sticks may vary
-		amount    = math.random( 4, 20 );
+		local amount = math.random(4, 20)
 		-- return some sticks
-		harvested = "default:stick "..amount;
+		harvested = "default:stick " .. amount
 
 	-- nothing known - destroy the plant
 	else
-		return nil;
+		return
 	end
 
 	-- give the harvested result to the player
-	if( harvested ~= "" ) then
+	if harvested then
 		--minetest.chat_send_player("singleplayer","you would now get "..tostring( harvested ) );
-		digger:get_inventory():add_item( "main", harvested );
+		local inventory = digger:get_inventory()
+		inventory:add_item( "main", harvested );
 	end
 end
 
@@ -93,26 +95,24 @@ end
 
 plantlife_bushes.after_place_node = function(pos, placer, itemstack)
 
-	if( not( itemstack ) or not( pos )) then
-		return nil;
+	if not (itemstack and pos) then
+		return
 	end
 
-	local name_parts = itemstack:get_name():split( ":" );
-	if( #name_parts <2 or name_parts[2]==nil ) then
-		return nil;
+	local name_parts = itemstack:get_name():split(":")
+	if #name_parts < 2 or name_parts[2] == nil then
+		return
 	end
 
-	name_parts = name_parts[2]:split( "_" );
+	name_parts = name_parts[2]:split("_")
 
-	if( #name_parts <2 or name_parts[1]==nil ) then
-		return nil;
+	if #name_parts < 2 or name_parts[1] == nil then
+		return
 	end
 
-	minetest.set_node( pos, {type='node',name='bushes:fruitless_bush'});
-	local meta = minetest.get_meta( pos );
-	meta:set_string( 'bush_type', name_parts[1] ); 
-
-	return nil;
+	minetest.set_node(pos, {name = "bushes:fruitless_bush"})
+	local meta = minetest.get_meta(pos)
+	meta:set_string("bush_type", name_parts[1])
 end
 
 
@@ -120,22 +120,22 @@ end
 -- regrow berries (uses a base abm instead of plants_lib because of the use of metadata).
 
 minetest.register_abm({
-	nodenames = { "bushes:fruitless_bush" },
-	neighbors = { "group:soil", "group:potting_soil" },
+	nodenames = {"bushes:fruitless_bush"},
+	neighbors = {"group:soil", "group:potting_soil"},
 	interval = 500,
 	chance = 5,
 	action = function(pos, node, active_object_count, active_object_count_wider)
 
-		local meta = minetest.get_meta( pos );
-		local bush_name = meta:get_string( 'bush_type' ); 
+		local meta = minetest.get_meta(pos)
+		local bush_name = meta:get_string("bush_type")
 
-		if( bush_name ~= nil and bush_name ~= '' ) then
-			local dirtpos = { x = pos.x, y = pos.y-1, z = pos.z }
+		if bush_name and bush_name ~= "" then
+			local dirtpos = {x = pos.x, y = pos.y-1, z = pos.z}
 			local dirt = minetest.get_node(dirtpos)
 			local is_soil = minetest.get_item_group(dirt.name, "soil") or minetest.get_item_group(dirt.name, "potting_soil")
 
 			if is_soil and (dirt.name == "farming:soil_wet" or math.random(1,3) == 1) then
-				minetest.set_node( pos, {type='node',name='bushes:'..bush_name..'_bush'})
+				minetest.set_node( pos, {name = "bushes:" .. bush_name .. "_bush"})
 			end
 		end
 	end