tidy and tweak code

hoes.lua

@@ -192,3 +192,141 @@ minetest.override_item("farming:hoe_diamond", {
 	original_description = "Diamond Hoe",
 	description = toolranks.create_description("Diamond Hoe")})
 end
+
+
+-- hoe bomb function
+local function hoe_area(pos, player)
+
+	-- check for protection
+	if minetest.is_protected(pos, player:get_player_name()) then
+		minetest.record_protection_violation(pos, player:get_player_name())
+		return
+	end
+
+	local r = 5 -- radius
+
+	-- remove flora (grass, flowers etc.)
+	local res = minetest.find_nodes_in_area(
+		{x = pos.x - r, y = pos.y - 1, z = pos.z - r},
+		{x = pos.x + r, y = pos.y + 2, z = pos.z + r},
+		{"group:flora"})
+
+	for n = 1, #res do
+		minetest.swap_node(res[n], {name = "air"})
+	end
+
+	-- replace dirt with tilled soil
+	res = nil
+	res = minetest.find_nodes_in_area_under_air(
+		{x = pos.x - r, y = pos.y - 1, z = pos.z - r},
+		{x = pos.x + r, y = pos.y + 2, z = pos.z + r},
+		{"group:soil"})
+
+	for n = 1, #res do
+		minetest.swap_node(res[n], {name = "farming:soil"})
+	end
+end
+
+
+-- throwable hoe bomb
+minetest.register_entity("farming:hoebomb_entity", {
+	physical = true,
+	visual = "sprite",
+	visual_size = {x = 1.0, y = 1.0},
+	textures = {"farming_hoe_bomb.png"},
+	collisionbox = {0,0,0,0,0,0},
+	lastpos = {},
+	player = "",
+
+	on_step = function(self, dtime)
+
+		if not self.player then
+
+			self.object:remove()
+
+			return
+		end
+
+		local pos = self.object:get_pos()
+
+		if self.lastpos.x ~= nil then
+
+			local vel = self.object:getvelocity()
+
+			-- only when potion hits something physical
+			if vel.x == 0
+			or vel.y == 0
+			or vel.z == 0 then
+
+				if self.player ~= "" then
+
+					-- round up coords to fix glitching through doors
+					self.lastpos = vector.round(self.lastpos)
+
+					hoe_area(self.lastpos, self.player)
+				end
+
+				self.object:remove()
+
+				return
+
+			end
+		end
+
+		self.lastpos = pos
+	end
+})
+
+
+-- actual throwing function
+local function throw_potion(itemstack, player)
+
+	local playerpos = player:get_pos()
+
+	local obj = minetest.add_entity({
+		x = playerpos.x,
+		y = playerpos.y + 1.5,
+		z = playerpos.z
+	}, "farming:hoebomb_entity")
+
+	local dir = player:get_look_dir()
+	local velocity = 20
+
+	obj:setvelocity({
+		x = dir.x * velocity,
+		y = dir.y * velocity,
+		z = dir.z * velocity
+	})
+
+	obj:setacceleration({
+		x = dir.x * -3,
+		y = -9.5,
+		z = dir.z * -3
+	})
+
+	obj:setyaw(player:get_look_yaw() + math.pi)
+	obj:get_luaentity().player = player
+end
+
+
+-- hoe bomb item
+minetest.register_craftitem("farming:hoe_bomb", {
+	description = S("Hoe Bomb (use or throw on grassy areas to hoe land"),
+	inventory_image = "farming_hoe_bomb.png",
+	groups = {flammable = 2, not_in_creative_inventory = 1},
+	on_use = function(itemstack, user, pointed_thing)
+
+		if pointed_thing.type == "node" then
+			hoe_area(pointed_thing.above, user)
+		else
+			throw_potion(itemstack, user)
+
+			if not farming.is_creative(user:get_player_name()) then
+
+				itemstack:take_item()
+
+				return itemstack
+			end
+		end
+	end,
+})