Make barricade burn on laser contact

CREDITS.md

@@ -10,8 +10,9 @@ External mods used:
 ---
 
 Textures:
-- Water, wood, tree, stone, tools, hand, gold block, ship lightbox, player textures, crates, seaweed, purple coral, crab grass come from “PixelBOX” texture pack by jp (CC0)
+- Water, wood, tree, stone, tools, hand, gold block, ship lightbox, player textures, crates, seaweed, purple coral, crab grass, fire come from “PixelBOX” texture pack by jp (CC0)
 - Textures in `lzr_decor` mod made by jp (CC0)
+- Barricade made by jp (CC0)
 - Crosshair, wieldhand, `smoke_puff.png`: trivial textures by Wuzzy (CC0)
 - Emitter, detector textures: Derivate works of xdecor textures by jp (CC0)
 - Mirror textures: by Wuzzy (CC0)
@@ -84,6 +85,13 @@ Sounds:
 	- by Fourier <https://opengameart.org/content/forward-button-press-ui-sound>
 	- Edit by Wuzzy (shortened)
 	- License: CC BY 3.0
+- `lzr_laser_quickburn.*.ogg`:
+	- Original by florianreichelt <https://freesound.org/people/florianreichelt/sounds/563012/>
+	- Shortened for gameplay reasons
+	- License: CC0
+- `lzr_laser_barricade_break.ogg`:
+	- By kevinkace <https://freesound.org/people/kevinkace/sounds/66780/>
+	- License: CC0
 - `lzr_sounds_footstep_stone.*.ogg`, `default_dirt_footstep.*.ogg`, `lzr_sounds_footstep_leaves.*.ogg`, `lzr_sounds_dug_grass.*.ogg`:
 	- by Wuzzy
 	- License: MIT License

mods/lzr_decor/init.lua

@@ -45,15 +45,6 @@ register_pane("wood_frame", S("Wood Frame"), {
 	groups = {breakable = 1, rotatable = 3, pane = 1},
 })
 
-minetest.register_node("lzr_decor:barricade", {
-	description = S("Barricade"),
-	drawtype = "plantlike",
-	paramtype = "light",
-	inventory_image = "xdecor_baricade.png",
-	tiles = {"xdecor_baricade.png"},
-	groups = {breakable = 1},
-})
-
 minetest.register_node("lzr_decor:bonfire", {
 	description = S("Bonfire"),
 	walkable = false,

mods/lzr_laser/blocks.lua

@@ -32,6 +32,8 @@ local mirror_out = {
 	[23] = {0,0,1},
 }
 
+local movement_gravity = tonumber(minetest.settings:get("movement_gravity")) or 9.81
+
 lzr_laser.get_detector_dir = function(param2)
 	local dir_input = minetest.facedir_to_dir(param2)
 	if not dir_input then
@@ -132,6 +134,29 @@ local after_rotate = function()
 	full_update()
 end
 
+local element_can_dig = function()
+	return lzr_gamestate.get_state() ~= lzr_gamestate.LEVEL_COMPLETE
+end
+local element_on_place = function(itemstack, placer, pointed_thing)
+	if lzr_gamestate.get_state() == lzr_gamestate.LEVEL_COMPLETE then
+		-- Prevent node placement when in 'level complete' state
+		return itemstack
+	else
+		-- node's on_rightclick action takes precedence
+		if pointed_thing.type == "node" and placer then
+			local node = minetest.get_node(pointed_thing.under)
+			local def = minetest.registered_nodes[node.name]
+			local sneak = placer:get_player_control().sneak
+			if def and def.on_rightclick and not sneak then
+				def.on_rightclick(pointed_thing.under, node, placer, itemstack, pointed_thing)
+				return itemstack
+			end
+		end
+		-- Default node placement behavior
+		return minetest.item_place_node(itemstack, placer, pointed_thing)
+	end
+end
+
 local register_element = function(subname, def, options)
 	local def_core = table.copy(def)
 	if not options then options = {} end
@@ -153,28 +178,8 @@ local register_element = function(subname, def, options)
 	end
 	def_core.groups.breakable = 1
 	def_core.groups[subname] = 1
-	def_core.can_dig = function()
+	def_core.can_dig = element_can_dig
-		return lzr_gamestate.get_state() ~= lzr_gamestate.LEVEL_COMPLETE
+	def_core.on_place = element_on_place
-	end
-	def_core.on_place = function(itemstack, placer, pointed_thing)
-		if lzr_gamestate.get_state() == lzr_gamestate.LEVEL_COMPLETE then
-			-- Prevent node placement when in 'level complete' state
-			return itemstack
-		else
-			-- node's on_rightclick action takes precedence
-			if pointed_thing.type == "node" and placer then
-				local node = minetest.get_node(pointed_thing.under)
-				local def = minetest.registered_nodes[node.name]
-				local sneak = placer:get_player_control().sneak
-				if def and def.on_rightclick and not sneak then
-					def.on_rightclick(pointed_thing.under, node, placer, itemstack, pointed_thing)
-					return itemstack
-				end
-			end
-			-- Default node placement behavior
-			return minetest.item_place_node(itemstack, placer, pointed_thing)
-		end
-	end
 
 	minetest.register_node("lzr_laser:"..subname, def_core)
 
@@ -439,3 +444,78 @@ register_element("detector", {
 	sounds = lzr_sounds.node_sound_wood_defaults(),
 }, { allow_take = true, is_detector = true })
 
+
+minetest.register_node("lzr_laser:barricade", {
+	description = S("Barricade"),
+	drawtype = "mesh",
+	mesh = "lzr_laser_burning.obj",
+	paramtype = "light",
+	inventory_image = "xdecor_baricade.png",
+	wield_image = "xdecor_baricade.png",
+	tiles = {"blank.png","xdecor_baricade.png"},
+	use_texture_alpha = "clip",
+	groups = { breakable = 1, laser_destroys = 2 },
+	sounds = lzr_sounds.node_sound_wood_defaults({
+		dug = {name="lzr_laser_barricade_break", gain=1.0},
+	}),
+	on_place = element_on_place,
+	can_dig = element_can_dig,
+	_lzr_active = "lzr_laser:barricade_on",
+})
+
+minetest.register_node("lzr_laser:barricade_on", {
+	description = S("Burning Barricade"),
+	drawtype = "mesh",
+	paramtype = "light",
+	light_source = 12,
+	mesh = "lzr_laser_burning.obj",
+	inventory_image = "lzr_laser_baricade_burning.png",
+	wield_image = "lzr_laser_baricade_burning.png",
+	use_texture_alpha = "clip",
+	tiles = {
+		{ name="fire_basic_flame_animated.png", animation={
+			type = "vertical_frames",
+			aspect_w = 16,
+			aspect_h = 16,
+			length = 1.0,
+		},},
+		{ name="lzr_laser_baricade_burning_animated.png", animation={
+			type = "vertical_frames",
+			aspect_w = 16,
+			aspect_h = 16,
+			length = 1.0,
+		},},
+	},
+	groups = { breakable = 1, not_in_creative_inventory = 1 },
+	sounds = lzr_sounds.node_sound_wood_defaults({
+		dug = {name="lzr_laser_barricade_break", gain=1.0},
+	}),
+	on_timer = function(pos)
+		-- spawn a few particles for the removed node
+		minetest.add_particlespawner({
+			amount = 16,
+			time = 0.001,
+			minpos = vector.subtract(pos, vector.new(0.5, 0.5, 0.5)),
+			maxpos = vector.add(pos, vector.new(0.5, 0.5, 0.5)),
+			minvel = vector.new(-0.5, -0.5, -0.5),
+			maxvel = vector.new(0.5, 0.2, 0.5),
+			minacc = vector.new(0, -movement_gravity, 0),
+			maxacc = vector.new(0, -movement_gravity, 0),
+			minsize = 0.1,
+			maxsize = 0.5,
+			node = {name="lzr_laser:barricade"},
+		})
+		-- Play randomly-pitched break sound
+		local pitch = 1.0+math.random(-100, 100)*0.001 -- 0.9..1.1
+		minetest.sound_play({name="lzr_laser_barricade_break", gain=1.0}, {gain=1.0, pitch=pitch, pos=pos}, true)
+		-- remove node
+		minetest.remove_node(pos)
+		full_update()
+	end,
+	drop = "",
+	on_place = element_on_place,
+	can_dig = element_can_dig,
+	_lzr_inactive = "lzr_laser:barricade",
+})
+
+

mods/lzr_laser/models/lzr_laser_burning.obj

@@ -0,0 +1,44 @@
+# Blender v3.1.0 Alpha OBJ File: 'lzr_plants_burning.blend'
+# www.blender.org
+mtllib lzr_plants_burning.mtl
+v 0.495000 0.500000 0.495000
+v 0.495000 -0.500000 0.495000
+v -0.495000 0.500000 0.495000
+v -0.495000 -0.500000 0.495000
+v 0.495000 0.500000 -0.495000
+v 0.495000 -0.500000 -0.495000
+v -0.495000 0.500000 -0.495000
+v -0.495000 -0.500000 -0.495000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vn -1.0000 0.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+vn 0.0000 0.0000 1.0000
+vn 1.0000 0.0000 0.0000
+vn -0.7071 0.0000 -0.7071
+vn -0.7071 0.0000 0.7071
+g Fire_Cube_Fire
+usemtl Fire
+s off
+f 4/1/1 3/2/1 7/3/1 8/4/1
+f 8/5/2 7/6/2 5/7/2 6/8/2
+f 2/9/3 1/10/3 3/11/3 4/12/3
+f 6/13/4 5/14/4 1/15/4 2/16/4
+g Fire_Cube_Object
+usemtl Object
+f 4/1/5 3/2/5 5/7/5 6/8/5
+f 2/9/6 1/10/6 7/3/6 8/4/6

mods/lzr_laser/physics.lua

@@ -1,6 +1,9 @@
 -- Max. number of steps in the laser travel algorithm
 local MAX_LASER_ITERATIONS = 10000
 
+-- TODO: Don't use this variable, instead transport it between functions
+local burning_cache = {}
+
 -- Add a laser node to pos with the direction `dir`.
 -- Dir is a direction vector, and only one direction must be set
 function lzr_laser.add_laser(pos, dir, varea, vdata)
@@ -13,13 +16,24 @@ function lzr_laser.add_laser(pos, dir, varea, vdata)
 	local vi = varea:indexp(pos)
 	local content_id = vdata[vi]
 	local nodename = minetest.get_name_from_content_id(content_id)
+	local ld = minetest.get_item_group(nodename, "laser_destroys")
 	-- Laser through air or destroyable block
-	if content_id == minetest.CONTENT_AIR or minetest.get_item_group(nodename, "laser_destroys") > 0 then
+	if content_id == minetest.CONTENT_AIR or ld == 1 then
 		local dirs = lzr_laser.vector_to_dirs(dir)
 		local dirstring = lzr_laser.dirs_to_dirstring(dirs)
 		vdata[vi] = minetest.get_content_id("lzr_laser:laser_"..dirstring)
 		pos = vector.add(pos, dir)
 		return {{pos, dir}}
+	elseif ld == 2 then
+		local def = minetest.registered_nodes[nodename]
+		local active = def._lzr_active
+		if active then
+			vdata[vi] = minetest.get_content_id(active)
+			table.insert(burning_cache, pos)
+		else
+			minetest.log("error", "[lzr_laser] Node definition of "..nodename.." has laser_destroys=2 but no _lzr_active")
+		end
+		return false
 	-- Laser through laser (laser intersection)
 	elseif minetest.get_item_group(nodename, "laser") > 0 then
 		local dirnum = minetest.get_item_group(nodename, "laser")
@@ -244,6 +258,8 @@ end
 function lzr_laser.full_laser_update(pos1, pos2)
 	local benchmark_time_1 = minetest.get_us_time()
 
+	burning_cache = {}
+
 	local vmanip = minetest.get_voxel_manip(pos1, pos2)
 	local vpos1, vpos2 = vmanip:get_emerged_area()
 	local varea = VoxelArea:new({MinEdge = vpos1, MaxEdge = vpos2})
@@ -257,6 +273,13 @@ function lzr_laser.full_laser_update(pos1, pos2)
 	vmanip:set_param2_data(vdata_p2)
 	vmanip:write_to_map()
 
+	for b=1, #burning_cache do
+		local timer = minetest.get_node_timer(burning_cache[b])
+		minetest.sound_play({name="lzr_laser_quickburn", gain=1.0}, {pos=burning_cache[b]}, true)
+		timer:start(1)
+	end
+	burning_cache = {}
+
 	-- Print benchmark time
 	local benchmark_time_2 = minetest.get_us_time()
 	local diff = benchmark_time_2 - benchmark_time_1