Update Hello-World.md
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# Hello World
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HUD stuff
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```Lua
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minetest.register_on_joinplayer(function(player)
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local hud_id = player:hud_add({
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hud_elem_type = 'text',
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text = 'Hello world!',
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number = 0xFFFFFF,
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position = {x=0, y=1},
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alignment = {x=1, y=-1},
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offset = {x=4, y=-4}
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})
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end)
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```
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Modify HUD text via formspec. Doesn't work in Minimal.
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```Lua
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-- Show form when the /formspec command is used.
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minetest.register_chatcommand("formspec", {
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func = function(name, param)
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minetest.show_formspec(name, "tutorial:form",
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"size[4,3]" ..
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--"label[0,0;Hello, " .. name .. "]" ..
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"field[1,1.5;3,1;word;Enter name;]" ..
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"button_exit[1,2;2,1;exit;Save]")
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end
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})
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-- Register callback
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minetest.register_on_player_receive_fields(function(player, formname, fields)
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if formname ~= "tutorial:form" then
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-- Formname is not mymod:form,
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-- exit callback.
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return false
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end
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-- Send message to player.
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changeText(player, fields.word)
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-- Return true to stop other minetest.register_on_player_receive_fields
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-- from receiving this submission.
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return true
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end)
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function changeText(player, word)
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local newString = "Hello, " .. word .. "!"
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player:hud_change(hold.hud_id, 'text', newString)
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end
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```
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## Hello Pickaxe
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# Hello World
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```Lua
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minetest.register_tool("tutorial:hellopick", {
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