initial commit

craft_recipes.txt

@@ -0,0 +1,52 @@
+Circuit
+=======
+- basic_materials:ic
+- default:mese_crystal_fragment
+
+Body
+=======
+- basic_materials:plastic_sheet
+- default:steel_ingot
+
+Wires
+=======
+- basic_materials:copper_wire
+- default:copper_ingot
+
+Antenna
+=======
+- technic:copper_coil
+wires
+
+Glass
+======
+- default:glass
+
+
+Battery
+======
+- technic:battery
+- basic_materials:simple_energy_crystal
+- default:mese_crystal
+
+
+
+------------------
+Receiver
+
+-, antenna, -
+body, circuit, body
+body, battery, body
+
+-------------------
+Transmitter
+
+wires, antenna, wires
+glass, circuit, glass
+body, battery, body
+
+-------------------
+Beacon
+
+wires, circuit, wires
+body, battery, body

depends.txt

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+default

hud.lua

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+
+function ham_radio.init_hud(player)
+    local name = player:get_player_name()
+    ham_radio.playerhuds[name] = player:hud_add({
+		hud_elem_type = "text",
+		text = "",
+		position = ham_radio.settings.hud_pos,
+		offset = { x = ham_radio.settings.hud_offset.x, y = ham_radio.settings.hud_offset.y },
+		alignment = ham_radio.settings.hud_alignment,
+		number = 0xFFFFFF,
+		scale= { x = 100, y = 20 },
+    })
+end
+
+
+function ham_radio:update_hud_display(player)
+    local transmitter_signal = 0
+
+    local name = player:get_player_name()
+    local item = player:get_wielded_item()
+
+    if item:get_name() ~= "ham_radio:receiver" then
+        if self.playerlocators[name] then
+          player:hud_change(self.playerhuds[name], "text", "")
+          self.playerlocators[name] = false
+        end
+        return
+    end
+    self.playerlocators[name] = true
+	
+	local meta = item:get_meta()
+	local frequency = meta:get_string("frequency")
+
+	minetest.chat_send_player(player:get_player_name(), "Configured freq:"..frequency)
+	
+	if frequency ~= nil and frequency ~= "" then
+		local transmitter = self.read_transmitter(frequency)
+		-- minetest.chat_send_player(player:get_player_name(), "Found transmitter:"..minetest.serialize(transmitter))
+		if transmitter.pos then
+			transmitter_signal = self:locate_transmitter(player, transmitter.pos)
+		end
+	end
+	-- local target_pos = {x=-407, y = 59, z = 70}
+
+    --local indicator = string.rep('|', transmitter.distance)..string.rep('|', transmitter.signal)..string.rep(':', 25-(transmitter.distance + transmitter.signal))
+	local indicator = string.rep('|', transmitter_signal)..string.rep(':', 20 - transmitter_signal)
+
+    local text = "[ Frequency: "..tostring(meta:get_string("frequency")).." ]"..indicator
+
+    player:hud_change(self.playerhuds[name], "text", text)
+end
+
+minetest.register_on_newplayer(ham_radio.init_hud)
+minetest.register_on_joinplayer(ham_radio.init_hud)
+
+minetest.register_on_leaveplayer(function(player)
+	ham_radio.playerhuds[player:get_player_name()] = nil
+end)
+
+local updatetimer = 0
+minetest.register_globalstep(function(dtime)
+	updatetimer = updatetimer + dtime
+	if updatetimer > 0.1 then
+		local players = minetest.get_connected_players()
+		for i=1, #players do
+			ham_radio:update_hud_display(players[i])
+		end
+		updatetimer = updatetimer - dtime
+	end
+end)

init.lua

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+local modpath = minetest.get_modpath("ham_radio")
+local mod_storage = minetest.get_mod_storage()
+
+ham_radio = rawget(_G, "ham_radio") or {}
+
+ham_radio = {
+	playerhuds = {},
+	playerlocators = {},
+	settings = {
+		hud_pos = { x = 0.45, y = 0.7 },
+		hud_offset = { x = 15, y = 15 },
+		hud_alignment = { x = 1, y = 0 }
+	}
+}
+
+function ham_radio.save_transmitter(frequency, transmitter_data)
+	mod_storage:set_string(tostring(frequency), minetest.write_json(transmitter_data))
+end
+
+function ham_radio.read_transmitter(frequency)
+	local transmitter_data = mod_storage:get_string(tostring(frequency))
+	if transmitter_data ~= nil and transmitter_data ~= "" then
+		return minetest.parse_json(transmitter_data)
+	end
+	return {}
+end
+
+function ham_radio.delete_transmitter(frequency)
+	mod_storage:set_string(tostring(frequency), nil)
+end
+
+dofile(modpath.."/transmitter.lua")
+dofile(modpath.."/receiver.lua") 
+dofile(modpath.."/hud.lua")
+
+-- TODO: craft transmitter
+-- TODO: configure transmitter
+-- TODO: craft pelengator
+-- TODO: set pelengator frequency
+
+

receiver.lua

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+-- 		minetest.chat_send_player(user:get_player_name(), "Itemstack"..meta:get_string("frequency").."^"..itemstack:get_name())
+
+
+minetest.register_tool("ham_radio:receiver", {
+	description = "Ham Radio Receiver",
+	wield_image = "ham_radio_receiver_wield.png",
+	inventory_image = "ham_radio_receiver_wield.png",
+	groups = { disable_repair = 1 },
+	on_use = function(itemstack, user, pointed_thing)		
+		local meta = itemstack:get_meta()
+		local frequency = meta:get_string("frequency")
+		minetest.show_formspec(user:get_player_name(), "ham_radio:configure_receiver", 
+			"size[4,3]"..
+			"field[0.25,0.25;3,1;frequency;Frequency;"..tostring(frequency).."]"..
+			"button_exit[0.25,1.5;3,1;;Done]"
+		)
+		return itemstack
+	end,
+})
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= "ham_radio:configure_receiver" or not minetest.is_player(player) then
+        return false
+    end
+    if fields.frequency == "" or fields.frequency == nil then
+		return false
+    end
+	local item = player:get_wielded_item()
+	local meta = item:get_meta()
+    meta:set_string("frequency", fields.frequency)
+	player:set_wielded_item(item) -- replace wielded item with new metadata
+	return true
+end)
+	
+	
+minetest.register_craft({
+  output = "ham_radio:receiver",
+  recipe = {
+    {"default:glass"},
+    {"default:steel_ingot"},
+    {"default:glass"},
+  }
+})
+
+function ham_radio:locate_transmitter(player, transmitter_pos)
+    local player_pos = player:get_pos()
+    local player_look_vector = player:get_look_dir()
+    local player_direction = vector.add(player_pos, player_look_vector)
+
+    local distance = vector.distance(player_pos, transmitter_pos)
+
+    -- local distance_to_target = 13 - math.floor(math.log(distance*30))
+    local distance_to_target = 24 - math.floor(2 * math.log(distance*10))
+
+    local distance2 = vector.distance(player_direction, transmitter_pos)
+    local signal_power = 1 - ((1 + distance2 - distance) / 2)
+
+	return math.floor(distance_to_target * signal_power);
+	
+    --return {
+    --   distance = distance_to_target,
+    --   signal = signal_power
+    -- }
+end

transmitter.lua

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+
+minetest.register_craft({
+	output = "ham_radio:transmitter",
+	recipe = {
+		{"default:glass"},
+		{"default:mese"},
+		{"default:steel_ingot"},
+	}
+})
+
+minetest.register_node("ham_radio:transmitter", {
+        description = "Ham Radio Transmitter",
+        tiles = {"ham_radio_transmitter_top.png", "ham_radio_transmitter.png"},
+        groups = {cracky=2,oddly_breakable_by_hand=2},
+        sounds = default.node_sound_metal_defaults(),
+        light_source = 5,
+		on_construct = function(pos)
+			local meta = minetest.get_meta(pos)
+			meta:set_string(
+					"formspec", 
+					"size[6,8]"..
+					"field[0.25,0.25;3,1;frequency;Frequency;${frequency}]"..
+					"button_exit[1.5,7.5;3,1;;Done]"
+				)
+			meta:set_string("infotext", '')
+		end,
+		on_receive_fields = function(pos, formname, fields, sender)
+			if fields.quit ~= "true" then
+				return
+			end
+			if fields.frequency ~= nil and fields.frequency ~= '' then
+				local meta = minetest.get_meta(pos)
+				meta:set_string("frequency", fields.frequency)
+				meta:set_string("infotext", 'Frequency: '..fields.frequency)
+				ham_radio.save_transmitter(fields.frequency, {
+					pos = pos,
+					broadcast_message = "Test Ham Radio Broadcast!"
+				})
+			end
+		end,
+        can_dig = function(pos,player)
+                local meta = minetest.get_meta(pos);
+                local inv = meta:get_inventory()
+                local name = player:get_player_name()
+                return inv:is_empty("main") and not minetest.is_protected(pos, name)
+        end,
+		after_dig_node = function(pos, oldnode, oldmetadata, player)
+			ham_radio.delete_transmitter(oldmetadata.fields.frequency)
+		end
+    }
+);