Unreal Software - Thread: Attempt to compare string with number...

Attempt to compare string with number...

olie18
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Offline

30.11.17 02:05:48 am

* i did some more checking and it's definitely the high_score_table[2] that's returning as a string. Do i need to specify somehow that it loads the number into the table as a number instead of a string?

*Apparently doing math on high_score_table[2] after loading it makes it work properly... What am i missing in my knowledge here?

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-- loading the highscores into a table on server start --

for line in io.lines("sys/lua/highscore/highscore.txt") do 
table.insert (high_score_table, line);
end

function update_scores(id)
in_game_player_score[id]=(player(id,"score")*120)+(((player(id,"score")*2)*score_multiplier[id])+snowball_hit_score_bonus[id])
parse('hudtxt2 '..id..' 3 "©000230000Score: '..in_game_player_score[id]..'" 300 18 0')
	if in_game_player_score[id] > high_score_table[2] then -- offending line
	high_score_table[1] = player(id,"name")
	high_score_table[2] = in_game_player_score[id]
	high_score_save = io.open("sys/lua/highscore/highscore.txt", "w")
	high_score_save:write(""..high_score_table[1].."\n")
	high_score_save:write(""..high_score_table[2].."\n")
	high_score_save:close()
	parse('hudtxt 8 "©230000000Highscore - '..high_score_table[1]..': '..high_score_table[2]..'" 475 18 0')
	end
end

LUA ERROR: sys/lua/autorun/score.lua:41: attempt to compare string with number
-> sys/lua/autorun/score.lua:41: in function 'update_scores'
-> sys/lua/autorun/score.lua:62: in function <sys/lua/autorun/score.lua:53>

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-- There's also this that runs on server start which might be relevant --

check_high_score_exists = io.open("sys/lua/highscore/highscore.txt","r")
if check_high_score_exists ~= nil then 
io.close(check_high_score_exists)
parse("sv_msg Highscore loaded")
else
high_score_table[1] = "no highscore set"
high_score_table[2] = 0
high_score_save = io.open("sys/lua/highscore/highscore.txt", "w")
high_score_save:write(""..high_score_table[1].."\n")
high_score_save:write(""..high_score_table[2].."\n")
high_score_save:close()
parse('hudtxt 8 "©230000000Highscore - '..high_score_table[1]..': '..high_score_table[2]..'" 475 18 0')
end

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-- here's where the update_scores function is being called from --

addhook ("spawn","reset_scores")
function reset_scores(id)
score_multiplier[id] = 1
in_game_player_score[id] = 0
snowball_hit_score_bonus[id] = 0
parse('hudtxt2 '..id..' 4 "©000215000Score multiplier: '..score_multiplier[id]..'" 300 0 0')
glow_by_score_amount[id] = image("gfx/sprites/flare.png",1,0,200+id)
imageblend(glow_by_score_amount[id],1)								
imagealpha(glow_by_score_amount[id],0.5)
imagecolor(glow_by_score_amount[id],0,0,0)
update_scores(id)
end

edited 7×, last 30.11.17 03:09:11 am

Re: Attempt to compare string with number...

Denisgrad
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Offline

30.11.17 08:06:32 am

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in_game_player_score1[id]= score[id] * 120 + score[id] * 2 
in_game_player_bonus[id] = score_multiplier[id] +snowball_hit_score_bonus[id]
in_game_player_score[id] = in_game_player_score1[id] * in_game_player_bonus[id] --This is the final value you want

This will return a number of the score. I think this is what you want right. You cant multiply a string thats why you get an error.

Re: Attempt to compare string with number...

Devil-Thanh
GAME BANNED Off

Offline

30.11.17 09:19:45 am

Actually, the table that you read from a file is a string format

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a = "123"
a = tonumber(a)

then

a = 123

Quick tutorial to tonumber() in Lua

VADemon
User Off

Offline

30.11.17 10:03:16 am

Reading from files always returns text (strings). Here you push text into the table:

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for line in io.lines("sys/lua/highscore/highscore.txt") do 
table.insert (high_score_table, line);
end

This would write the number value to the table:

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for line in io.lines("sys/lua/highscore/highscore.txt") do 
table.insert(high_score_table, tonumber(line));
end

tonumber(text) works like this:
- if it's text and represents a valid number, it'll be converted to a number
- if it's nothing or invalid format it will return nothing or nil

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print(tonumber("_2")) -- weird shit like that doesn't work
print(tonumber("3.14159")) -- correct
print(tonumber(" 2")) -- will also work

For all arithmetical operations Lua will try and convert strings to numbers: + - / * % ^

However, the less-than <, >, ==, <=, >=, ~= operators are not only arithmetical and return a boolean (true/false) value. That's why string is not automatically converted to number there.

PS: If this has helped you, please PM user

Rainoth and tell him he should play less League.

Re: Attempt to compare string with number...

Yates
Reviewer Off

Offline

30.11.17 10:44:13 am

VADemon has written

PS: If this has helped you, please PM user

Rainoth and tell him he should play less League.

Doesn't work.

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Attempt to compare string with number...