Shell arrows and other tweakings

shell_arrow.lua

@@ -0,0 +1,117 @@
+minetest.register_craftitem("throwing:arrow_shell", {
+	description = "Shell arrow",
+	inventory_image = "throwing_arrow_shell.png",
+})
+
+minetest.register_node("throwing:arrow_shell_box", {
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			-- Shaft
+			{-6.5/17, -1.5/17, -1.5/17, 6.5/17, 1.5/17, 1.5/17},
+			--Spitze
+			{-4.5/17, 2.5/17, 2.5/17, -3.5/17, -2.5/17, -2.5/17},
+			{-8.5/17, 0.5/17, 0.5/17, -6.5/17, -0.5/17, -0.5/17},
+			--Federn
+			{6.5/17, 1.5/17, 1.5/17, 7.5/17, 2.5/17, 2.5/17},
+			{7.5/17, -2.5/17, 2.5/17, 6.5/17, -1.5/17, 1.5/17},
+			{7.5/17, 2.5/17, -2.5/17, 6.5/17, 1.5/17, -1.5/17},
+			{6.5/17, -1.5/17, -1.5/17, 7.5/17, -2.5/17, -2.5/17},
+			
+			{7.5/17, 2.5/17, 2.5/17, 8.5/17, 3.5/17, 3.5/17},
+			{8.5/17, -3.5/17, 3.5/17, 7.5/17, -2.5/17, 2.5/17},
+			{8.5/17, 3.5/17, -3.5/17, 7.5/17, 2.5/17, -2.5/17},
+			{7.5/17, -2.5/17, -2.5/17, 8.5/17, -3.5/17, -3.5/17},
+		}
+	},
+	tiles = {"throwing_arrow_shell.png", "throwing_arrow_shell.png", "throwing_arrow_shell_back.png", "throwing_arrow_shell_front.png", "throwing_arrow_shell_2.png", "throwing_arrow_shell.png"},
+	groups = {not_in_creative_inventory=1},
+})
+
+local THROWING_ARROW_ENTITY={
+	physical = false,
+	timer=0,
+	visual = "wielditem",
+	visual_size = {x=0.1, y=0.1},
+	textures = {"throwing:arrow_shell_box"},
+	lastpos={},
+	collisionbox = {0,0,0,0,0,0},
+}
+
+local radius = 1
+
+local function add_effects(pos, radius)
+	minetest.add_particlespawner({
+		amount = 8,
+		time = 0.5,
+		minpos = vector.subtract(pos, radius / 2),
+		maxpos = vector.add(pos, radius / 2),
+		minvel = {x=-10, y=-10, z=-10},
+		maxvel = {x=10,  y=10,  z=10},
+		minacc = vector.new(),
+		maxacc = vector.new(),
+		minexptime = 0.5,
+		maxexptime = 1,
+		minsize = 0.5,
+		maxsize = 1,
+		texture = "tnt_smoke.png",
+	})
+end
+
+
+local function boom(pos)
+	minetest.sound_play("shell_explode", {pos=pos, gain=1.5, max_hear_distance=2*64})
+	minetest.set_node(pos, {name="tnt:boom"})
+	minetest.get_node_timer(pos):start(0.1)
+	add_effects(pos, radius)
+end
+
+-- Back to the arrow
+
+THROWING_ARROW_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:arrow_shell_entity" and obj:get_luaentity().name ~= "__builtin:item" then
+					local damage = 16
+					obj:punch(self.object, 1.0, {
+						full_punch_interval=1.0,
+						damage_groups={fleshy=damage},
+					}, nil)
+					self.object:remove()
+					boom(pos)
+				end
+			end
+		end
+	end
+
+	if self.lastpos.x~=nil then
+		if node.name ~= "air" then
+			self.object:remove()
+			boom(self.lastpos)
+		end
+	end
+	self.lastpos={x=pos.x, y=pos.y, z=pos.z}
+end
+
+minetest.register_entity("throwing:arrow_shell_entity", THROWING_ARROW_ENTITY)
+
+minetest.register_craft({
+	output = 'throwing:arrow_shell 8',
+	recipe = {
+		{'default:stick', 'tnt:gunpowder', 'default:bronze_ingot'},
+	}
+})
+
+minetest.register_craft({
+	output = 'throwing:arrow_shell 8',
+	recipe = {
+		{'default:bronze_ingot', 'tnt:gunpowder', 'default:stick'},
+	}
+})