mirror of
https://github.com/technix/ham_radio.git
synced 2024-07-15 03:59:33 +02:00
79 lines
2.6 KiB
Lua
79 lines
2.6 KiB
Lua
minetest.register_tool("ham_radio:handheld_receiver", {
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description = "Handheld Radio Receiver",
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wield_image = "ham_radio_receiver_handheld.png",
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inventory_image = "ham_radio_receiver_handheld.png",
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groups = { disable_repair = 1 },
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-- left click - change frequency
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on_use = function(itemstack, user, pointed_thing)
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local meta = itemstack:get_meta()
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local frequency = meta:get_string("frequency")
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minetest.show_formspec(user:get_player_name(), "ham_radio:configure_handheld_receiver",
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table.concat({
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"size[3,4]",
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"image[1,0;1,1;ham_radio_receiver_handheld.png]",
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"field[0.25,2;3,1;frequency;Frequency;",tostring(frequency),"]",
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"tooltip[frequency;Integer number ",
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ham_radio.settings.frequency.min,"-",
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ham_radio.settings.frequency.max, "]",
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"button_exit[0,3.5;3,1;;Done]"
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},'')
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)
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return itemstack
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end,
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-- right click - RDS on/off
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on_secondary_use = function(itemstack, user, pointed_thing)
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local meta = itemstack:get_meta()
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local is_rds_disabled = meta:get_string("rds_disabled")
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if is_rds_disabled == "" then
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meta:set_string("rds_disabled", "true")
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else
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meta:set_string("rds_disabled", "")
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end
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return itemstack
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end
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})
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minetest.register_on_player_receive_fields(function(player, formname, fields)
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if formname ~= "ham_radio:configure_handheld_receiver" or not minetest.is_player(player) then
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return false
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end
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if not ham_radio.validate_frequency(fields.frequency) then
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return false
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end
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local item = player:get_wielded_item()
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local meta = item:get_meta()
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meta:set_string("frequency", fields.frequency)
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-- replace wielded item with new metadata
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player:set_wielded_item(item)
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-- reset rds messages
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ham_radio.player_rds[player:get_player_name()] = nil
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return true
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end)
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function ham_radio:locate_transmitter(player, transmitter_pos)
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local player_pos = player:get_pos()
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local player_look_vector = player:get_look_dir()
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local player_direction = vector.add(player_pos, player_look_vector)
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local coeff = 0.9
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local distance_to_target = 0
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local distance = vector.distance(player_pos, transmitter_pos)
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if distance < 3 then
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distance_to_target = 100
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coeff = 0.99
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else
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distance_to_target = -0.0000000001*math.pow(distance,3)+0.00000145*math.pow(distance,2)-0.03*distance+100
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if distance_to_target < 3 then
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distance_to_target = 3
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end
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end
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local distance2 = vector.distance(player_direction, transmitter_pos)
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local signal_power = distance - distance2;
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-- 0-100
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return distance_to_target * coeff + distance_to_target * (1 - coeff) * signal_power;
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end
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