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path: root/mesecons_movestones/init.lua
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-- MOVESTONE
-- Non-sticky:
-- Moves along mesecon lines
-- Pushes all blocks in front of it
--
-- Sticky one
-- Moves along mesecon lines
-- Pushes all block in front of it
-- Pull all blocks in its back

function mesecon:get_movestone_direction(pos)
	getactivated = 0
	local lpos
	local getactivated = 0
	local rules = {
		{x=0,  y=1,  z=-1},
		{x=0,  y=0,  z=-1},
		{x=0,  y=-1, z=-1},
		{x=0,  y=1,  z=1},
		{x=0,  y=-1, z=1},
		{x=0,  y=0,  z=1},
		{x=1,  y=0,  z=0},
		{x=1,  y=1,  z=0},
		{x=1,  y=-1, z=0},
		{x=-1, y=1,  z=0},
		{x=-1, y=-1, z=0},
		{x=-1, y=0,  z=0}}

	lpos = {x=pos.x+1, y=pos.y, z=pos.z}
	for n = 1, 3 do
		if mesecon:is_power_on(lpos, rules[n].x, rules[n].y, rules[n].z) then
			return {x=0, y=0, z=-1}
		end
	end

	lpos = {x = pos.x-1, y = pos.y, z = pos.z}
	for n=4, 6 do
		if mesecon:is_power_on(lpos, rules[n].x, rules[n].y, rules[n].z) then
			return {x=0, y=0, z=1}
		end
	end

	lpos = {x = pos.x, y = pos.y, z = pos.z+1}
	for n=7, 9 do
		if mesecon:is_power_on(lpos, rules[n].x, rules[n].y, rules[n].z) then
			return {x=-1, y=0, z=0}
		end
	end

	lpos = {x = pos.x, y = pos.y, z = pos.z-1}
	for n=10, 12 do
		if mesecon:is_power_on(lpos, rules[n].x, rules[n].y, rules[n].z) then
			return {x=1, y=0, z=0}
		end
	end
end

minetest.register_node("mesecons_movestones:movestone", {
	tiles = {"jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_arrows.png", "jeija_movestone_arrows.png"},
	paramtype2 = "facedir",
	legacy_facedir_simple = true,
	groups = {cracky=3},
    	description="Movestone",
	sounds = default.node_sound_stone_defaults(),
	mesecons = {effector = {
		action_on = function (pos, node)
			local direction=mesecon:get_movestone_direction(pos)
			if not direction then return end
			minetest.env:remove_node(pos)
			mesecon:update_autoconnect(pos)
			minetest.env:add_entity(pos, "mesecons_movestones:movestone_entity")
		end
	}}
})

minetest.register_entity("mesecons_movestones:movestone_entity", {
	physical = false,
	visual = "sprite",
	textures = {"jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_arrows.png", "jeija_movestone_arrows.png"},
	collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
	visual = "cube",

	on_punch = function(self, hitter)
		self.object:remove()
		hitter:get_inventory():add_item("main", "mesecons_movestones:movestone")
	end,

	on_step = function(self, dtime)
		local pos = self.object:getpos()
		pos.x, pos.y, pos.z = math.floor(pos.x), math.floor(pos.y), math.floor(pos.z)
		local direction = mesecon:get_movestone_direction(pos)

		if not direction then
			local name = minetest.env:get_node(pos).name
			if name ~= "air" and name ~= "ignore" and minetest.registered_nodes[name].liquidtype == "none" then
				mesecon:mvps_push(pos, direction, MOVESTONE_MAXIMUM_PUSH)
			end
			minetest.env:add_node(pos, {name="mesecons_movestones:movestone"})
			self.object:remove()
			return
		end

		local np = mesecon:addPosRule(pos, direction)
		if not mesecon:mvps_push(np, direction, MOVESTONE_MAXIMUM_PUSH) then
			minetest.env:add_node(pos, {name="mesecons_movestones:movestone"})
			self.object:remove()
			return
		end

		self.object:setvelocity({x=direction.x*2, y=direction.y*2, z=direction.z*2})
	end,
})

minetest.register_craft({
	output = '"mesecons_movestones:movestone" 2',
	recipe = {
		{'"default:stone"', '"default:stone"', '"default:stone"'},
		{'"group:mesecon_conductor_craftable"', '"group:mesecon_conductor_craftable"', '"group:mesecon_conductor_craftable"'},
		{'"default:stone"', '"default:stone"', '"default:stone"'},
	}
})



-- STICKY_MOVESTONE

minetest.register_node("mesecons_movestones:sticky_movestone", {
	tiles = {"jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_sticky_movestone.png", "jeija_sticky_movestone.png"},
	inventory_image = minetest.inventorycube("jeija_sticky_movestone.png", "jeija_movestone_side.png", "jeija_movestone_side.png"),
	paramtype2 = "facedir",
	legacy_facedir_simple = true,
	groups = {cracky=3},
    	description="Sticky Movestone",
	sounds = default.node_sound_stone_defaults(),
	mesecons = {effector = {
		action_on = function (pos, node)
			local direction=mesecon:get_movestone_direction(pos)
			if not direction then return end
			local checknode={}
			local collpos={x=pos.x, y=pos.y, z=pos.z}
			repeat -- Check if it collides with a stopper
				collpos = mesecon:addPosRule(collpos, direction)
				checknode=minetest.env:get_node(collpos)
				if mesecon:is_mvps_stopper(checknode.name, direction) then 
					return 
				end
			until checknode.name=="air"
			or checknode.name=="ignore" 
			or not(minetest.registered_nodes[checknode.name].liquidtype == "none")  
			repeat -- Check if it collides with a stopper (pull direction)
				collpos={x=collpos.x-direction.x, y=collpos.y-direction.y, z=collpos.z-direction.z}
				checknode=minetest.env:get_node(collpos)
				if mesecon:is_mvps_stopper(checknode.name, direction) then
					return 
				end
			until checknode.name=="air"
			or checknode.name=="ignore" 
			or not(minetest.registered_nodes[checknode.name].liquidtype == "none")
			minetest.env:remove_node(pos)
			mesecon:update_autoconnect(pos)
			minetest.env:add_entity(pos, "mesecons_movestones:sticky_movestone_entity")
		end
	}}
})

minetest.register_craft({
	output = '"mesecons_movestones:sticky_movestone" 2',
	recipe = {
		{'"mesecons_materials:glue"', '"mesecons_movestones:movestone"', '"mesecons_materials:glue"'},
	}
})

minetest.register_entity("mesecons_movestones:sticky_movestone_entity", {
	physical = false,
	visual = "sprite",
	textures = {"jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_sticky_movestone.png", "jeija_sticky_movestone.png"},
	collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
	visual = "cube",

	on_punch = function(self, hitter)
		self.object:remove()
		hitter:get_inventory():add_item("main", 'mesecons_movestones:sticky_movestone')
	end,

	on_step = function(self, dtime)
		local pos = self.object:getpos()
		local colp = pos
		local direction=mesecon:get_movestone_direction(colp)

		if not direction then
			minetest.env:add_node(pos, {name="mesecons_movestones:sticky_movestone"})
			self.object:remove()
			return
		end

		self.object:setvelocity({x=direction.x*2, y=direction.y*2, z=direction.z*2})

		mesecon:mvps_push(pos, direction, 100)

		--STICKY
		mesecon:mvps_pull_all(pos, direction)
	end,
})