throwing/spears.lua

function throwing_register_spear_standard (kind, desc, eq, toughness, craft)
	minetest.register_tool("throwing:spear_" .. kind, {
		description = desc .. " spear",
		inventory_image = "throwing_spear_" .. kind .. ".png",
		wield_scale= {x=2,y=1.5,z=1.5};
		on_use = function(itemstack, user, pointed_thing)
			if pointed_thing.type == "object" then
				local damage = ((eq + 20)^1.2)/10
				pointed_thing.ref:punch(user, 1.0, {
					full_punch_interval=1.0,
					damage_groups={fleshy=damage},
				}, nil)
				if not minetest.setting_getbool("creative_mode") then
					itemstack:add_wear(65535/(toughness*100))
				end
			else
				throwing_shoot_spear(itemstack, user)
				if not minetest.setting_getbool("creative_mode") then
					itemstack:take_item()
				end
			end
			return itemstack
		end,
	})
	
	minetest.register_node("throwing:spear_" .. kind .. "_box", {
		drawtype = "nodebox",
		node_box = {
			type = "fixed",
			fixed = {
				-- Shaft
				{-60/16, -2/16, 2/16, 4, 1/16, -1/16},
				--Spitze
				{-4, -1/16, 1/16, -62/16, 0, 0},
				{-62/16, -1.5/16, 1.5/16, -60/16, 0.5/16, -0.5/16},
			}
		},
		tiles = {"throwing_spear_box.png"},
		groups = {not_in_creative_inventory=1},
	})
	
	local THROWING_SPEAR_ENTITY={
		physical = false,
		timer=0,
		visual = "wielditem",
		visual_size = {x=0.1, y=0.1},
		textures = {"throwing:spear_" .. kind .. "_box"},
		lastpos={},
		collisionbox = {0,0,0,0,0,0},
	}
	
	THROWING_SPEAR_ENTITY.on_step = function(self, dtime)
		self.timer=self.timer+dtime
		local pos = self.object:getpos()
		local node = minetest.get_node(pos)
	
		if self.timer>0.2 then
			local objs = minetest.get_objects_inside_radius({x=pos.x,y=pos.y,z=pos.z}, 2)
			for k, obj in pairs(objs) do
				if obj:get_luaentity() ~= nil then
					if obj:get_luaentity().name ~= "throwing:spear_" .. kind .. "_entity" and obj:get_luaentity().name ~= "__builtin:item" then
						local speed = vector.length(self.object:getvelocity())
						local damage = ((speed + eq +5)^1.2)/10					
						obj:punch(self.object, 1.0, {
							full_punch_interval=1.0,
							damage_groups={fleshy=damage},
						}, nil)
						self.object:remove()
						if math.random() < toughness then
							minetest.add_item(self.lastpos, 'throwing:spear_' .. kind)
						else
							minetest.add_item(self.lastpos, 'default:stick')
						end
					end
				end
			end
		end
	
		if self.lastpos.x~=nil then
			if node.name ~= "air" and not string.find(node.name, 'default:grass') and not string.find(node.name, 'default:junglegrass') and not string.find(node.name, 'flowers:') and not string.find(node.name, 'farming:') then
				self.object:remove()
				if math.random() < toughness then
					minetest.add_item(self.lastpos, 'throwing:spear_' .. kind)
				else
					minetest.add_item(self.lastpos, 'default:stick')
				end
			end
		end
		self.lastpos={x=pos.x, y=pos.y, z=pos.z}
	end
	
	minetest.register_entity("throwing:spear_" .. kind .. "_entity", THROWING_SPEAR_ENTITY)
	
	minetest.register_craft({
		output = 'throwing:spear_' .. kind,
		recipe = {
			{'group:wood', 'group:wood', craft},
		}
	})
	
	minetest.register_craft({
		output = 'throwing:spear_' .. kind,
		recipe = {
			{craft, 'group:wood', 'group:wood'},
		}
	})
end

if not DISABLE_STONE_SPEAR then
	throwing_register_spear_standard ('stone', 'Stone', 0, 0.75, 'group:stone')
end

if not DISABLE_STEEL_SPEAR then
	throwing_register_spear_standard ('steel', 'Steel', 5, 0.90, 'default:steel_ingot')
end

if not DISABLE_DIAMOND_SPEAR then
	throwing_register_spear_standard ('diamond', 'Diamond', 10, 0.99, 'default:diamond')
end

if not DISABLE_OBSIDIAN_SPEAR then
	throwing_register_spear_standard ('obsidian', 'Obsidian', 15, 0.80, 'default:obsidian')
end