1 files changed, 134 insertions, 0 deletions
diff --git a/mesecons/mesecons_gates/init.lua b/mesecons/mesecons_gates/init.lua
new file mode 100644
index 0000000..f3d6f09
--- /dev/null
+++ b/mesecons/mesecons_gates/init.lua
@@ -0,0 +1,134 @@
+local nodebox = {
+	type = "fixed",
+	fixed = {{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16 }},
+}
+
+local function gate_rotate_rules(node, rules)
+	for rotations = 0, node.param2 - 1 do
+		rules = mesecon.rotate_rules_left(rules)
+	end
+	return rules
+end
+
+local function gate_get_output_rules(node)
+	return gate_rotate_rules(node, {{x=1, y=0, z=0}})
+end
+
+local function gate_get_input_rules_oneinput(node)
+	return gate_rotate_rules(node, {{x=-1, y=0, z=0}})
+end
+
+local function gate_get_input_rules_twoinputs(node)
+	return gate_rotate_rules(node, {{x=0, y=0, z=1, name="input1"},
+		{x=0, y=0, z=-1, name="input2"}})
+end
+
+local function set_gate(pos, node, state)
+	local gate = minetest.registered_nodes[node.name]
+
+	if mesecon.do_overheat(pos) then
+		minetest.remove_node(pos)
+		mesecon.receptor_off(pos, gate_get_output_rules(node))
+		minetest.add_item(pos, gate.drop)
+	elseif state then
+		minetest.swap_node(pos, {name = gate.onstate, param2=node.param2})
+		mesecon.receptor_on(pos, gate_get_output_rules(node))
+	else
+		minetest.swap_node(pos, {name = gate.offstate, param2=node.param2})
+		mesecon.receptor_off(pos, gate_get_output_rules(node))
+	end
+end
+
+local function update_gate(pos, node, link, newstate)
+	local gate = minetest.registered_nodes[node.name]
+
+	if gate.inputnumber == 1 then
+		set_gate(pos, node, gate.assess(newstate == "on"))
+	elseif gate.inputnumber == 2 then
+		local meta = minetest.get_meta(pos)
+		meta:set_int(link.name, newstate == "on" and 1 or 0)
+
+		local val1 = meta:get_int("input1") == 1
+		local val2 = meta:get_int("input2") == 1
+		set_gate(pos, node, gate.assess(val1, val2))
+	end
+end
+
+function register_gate(name, inputnumber, assess, recipe)
+	local get_inputrules = inputnumber == 2 and gate_get_input_rules_twoinputs or
+		gate_get_input_rules_oneinput
+	local description = "Mesecons Logic Gate: "..name
+
+	local basename = "mesecons_gates:"..name
+	mesecon.register_node(basename, {
+		description = description,
+		inventory_image = "jeija_gate_off.png^jeija_gate_"..name..".png",
+		paramtype = "light",
+		paramtype2 = "facedir",
+		drawtype = "nodebox",
+		drop = basename.."_off",
+		selection_box = nodebox,
+		node_box = nodebox,
+		walkable = true,
+		sounds = default.node_sound_stone_defaults(),
+		assess = assess,
+		onstate = basename.."_on",
+		offstate = basename.."_off",
+		inputnumber = inputnumber
+	},{
+		tiles = {"jeija_microcontroller_bottom.png^".."jeija_gate_off.png^"..
+			"jeija_gate_"..name..".png"},
+		groups = {dig_immediate = 2, overheat = 1},
+		mesecons = { receptor = {
+			state = "off",
+			rules = gate_get_output_rules
+		}, effector = {
+			rules = get_inputrules,
+			action_change = update_gate
+		}}
+	},{
+		tiles = {"jeija_microcontroller_bottom.png^".."jeija_gate_on.png^"..
+			"jeija_gate_"..name..".png"},
+		groups = {dig_immediate = 2, not_in_creative_inventory = 1, overheat = 1},
+		mesecons = { receptor = {
+			state = "on",
+			rules = gate_get_output_rules
+		}, effector = {
+			rules = get_inputrules,
+			action_change = update_gate
+		}}
+	})
+
+	minetest.register_craft({output = basename.."_off", recipe = recipe})
+end
+
+register_gate("diode", 1, function (input) return input end,
+	{{"mesecons:mesecon", "mesecons_torch:mesecon_torch_on", "mesecons_torch:mesecon_torch_on"}})
+
+register_gate("not", 1, function (input) return not input end,
+	{{"mesecons:mesecon", "mesecons_torch:mesecon_torch_on", "mesecons:mesecon"}})
+
+register_gate("and", 2, function (val1, val2) return val1 and val2 end,
+	{{"mesecons:mesecon", "", ""},
+	 {"", "mesecons_materials:silicon", "mesecons:mesecon"},
+	 {"mesecons:mesecon", "", ""}})
+
+register_gate("nand", 2, function (val1, val2) return not (val1 and val2) end,
+	{{"mesecons:mesecon", "", ""},
+	 {"", "mesecons_materials:silicon", "mesecons_torch:mesecon_torch_on"},
+	 {"mesecons:mesecon", "", ""}})
+
+register_gate("xor", 2, function (val1, val2) return (val1 or val2) and not (val1 and val2) end,
+	{{"mesecons:mesecon", "", ""},
+	 {"", "mesecons_materials:silicon", "mesecons_materials:silicon"},
+	 {"mesecons:mesecon", "", ""}})
+
+register_gate("nor", 2, function (val1, val2) return not (val1 or val2) end,
+	{{"mesecons:mesecon", "", ""},
+	 {"", "mesecons:mesecon", "mesecons_torch:mesecon_torch_on"},
+	 {"mesecons:mesecon", "", ""}})
+
+register_gate("or", 2, function (val1, val2) return (val1 or val2) end,
+	{{"mesecons:mesecon", "", ""},
+	 {"", "mesecons:mesecon", "mesecons:mesecon"},
+	 {"mesecons:mesecon", "", ""}})