[HELP] Tables

[ma2med]

  
fruits = {} 
table.insert(fruits,{"banana",5}) 
table.insert(fruits,{"apple",1}) 
table.insert(fruits,{"cherry",4}) 
table.insert(fruits,{"banana",2}) 
table.insert(fruits,{"apple",8}) 
for i,v in ipairs(fruits) do 
outputChatBox(v[1].." = "..v[2]) 
end 
  

Hi, I'm searching a way for outputchatbox :

  
---[[ 
banana = 7 
apple = 9 
cherry = 4 
]]-- 
  

But it's output ..

  
---[[ 
banana = 5 
apple = 1 
cherry = 4 
banana = 2 
apple = 8 
]]-- 
  

But I don't find, thanks in advance

[Feche1320]

It outputs what you inserted on the table..

[ma2med]

It outputs what you inserted on the table..

No, I want organize it. (this is an example with the fruits)

[botder]

Make a new function (table.find) to search trough your table if there is an index with the same message.

[WASSIm.]

you can sort table with this

table.sort 

[botder]

you can sort table with this

table.sort 

He wants to prevent "spam" - in his example there is 2x "apple" and he wants to output it only once.

[ma2med]

you can sort table with this

table.sort 

He wants to prevent "spam" - in his example there is 2x "apple" and he wants to output it only once.

Yes

[Sasu]

Why don't you use the name of the fruit as index? It would be easier.

[ma2med]

What

[Feche1320]

What

Show your full script

[ma2med]

Show your full script

Take the example it's same.

[#DRAGON!FIRE]

Why do you need to insert two values ?

local table = {  
  [ "Apple" ] = 25, 
}   
  
function _setValue (  ) 
    table [ "Apple" ] = math.random ( 50 ) 
end 

if you need to tow values post your full code or tell me what you want to do ?

[Feche1320]

Show your full script

Take the example it's same.

Then you are doing it wrong, sir. Take the fruit name as the index, and then add +whatevervalue to that index.. if you don't show your full code then we can't help you much more..

[botder]

Not sure if you are going to like that style (because of metatable usage - advanced sh0t)

  
Backpack = { } 
  
function Backpack:create() 
    local new = { items = { } } 
    return setmetatable(new, {__index = Backpack}) 
end 
  
function Backpack:add(item, amount) 
    self.items[item] = math.max(0, (self.items[item] or 0) + amount) 
end 
  
function Backpack:remove(item, amount) 
    self.items[item] = math.max(0, (self.items[item] or 0) - amount) 
end 
  
function Backpack:drop(item) 
   self.items[item] = nil  
end 
  
function Backpack:getItems() 
    local copy = { } 
    for item, amount in pairs(self.items) do 
        copy[item] = amount 
    end 
    return copy 
end 
  
function Backpack:getItemCount(item) 
    local count = (self.items[item] or 0) 
    return count 
end 
  
function Backpack:hasItem(item) 
    local count = self:getItemCount(item) 
    return (count > 0) 
end 
  
-- Example 
example = Backpack:create() 
example:add("apple", 3) 
example:add("apple", 3) 
example:add("apple", 3) 
example:add("banana", 2) 
example:add("cherry", 4) 
  
-- Gather every item collected 
local items = example:getItems() 
  
-- Show items in chatbox 
for name, amount in pairs(items) do 
    outputChatBox("* ".. name .. ": " .. amount) 
end 
  

Result:

* banana: 2 
* apple: 9 
* cherry: 4  

[ma2med]

Not sure if you are going to like that style (because of metatable usage - advanced sh0t)

  
Backpack = { } 
  
function Backpack:create() 
    local new = { items = { } } 
    return setmetatable(new, {__index = Backpack}) 
end 
  
function Backpack:add(item, amount) 
    self.items[item] = math.max(0, (self.items[item] or 0) + amount) 
end 
  
function Backpack:remove(item, amount) 
    self.items[item] = math.max(0, (self.items[item] or 0) - amount) 
end 
  
function Backpack:drop(item) 
   self.items[item] = nil  
end 
  
function Backpack:getItems() 
    local copy = { } 
    for item, amount in pairs(self.items) do 
        copy[item] = amount 
    end 
    return copy 
end 
  
function Backpack:getItemCount(item) 
    local count = (self.items[item] or 0) 
    return count 
end 
  
function Backpack:hasItem(item) 
    local count = self:getItemCount(item) 
    return (count > 0) 
end 
  
-- Example 
example = Backpack:create() 
example:add("apple", 3) 
example:add("apple", 3) 
example:add("apple", 3) 
example:add("banana", 2) 
example:add("cherry", 4) 
  
-- Gather every item collected 
local items = example:getItems() 
  
-- Show items in chatbox 
for name, amount in pairs(items) do 
    outputChatBox("* ".. name .. ": " .. amount) 
end 
  

Result:

* banana: 2 
* apple: 9 
* cherry: 4  

Perfect, thanks you.

[Sasu]

I think this is more efficient.

local fruits = {} 
  
function addItem(item, count) 
    if item and count then 
        item = tostring(item) 
        fruits[item] = (fruits[item] or 0) + tonumber(count) 
    end 
end 
  
addItem("banana", 5) 
addItem("apple", 1) 
addItem("cherry", 4) 
addItem("banana", 2) 
addItem("apple",8 ) 
  
for i,v in pairs(fruits) do 
    outputChatBox(tostring(i).." = "..tostring(v)) 
end 

Output:

banana = 7 
apple = 9 
cherry = 4 

[botder]

Looks almost like my code except you are limited to 1 "backpack/table" with data.

[ma2med]

I think this is more efficient.

local fruits = {} 
  
function addItem(item, count) 
    if item and count then 
        item = tostring(item) 
        fruits[item] = (fruits[item] or 0) + tonumber(count) 
    end 
end 
  
addItem("banana", 5) 
addItem("apple", 1) 
addItem("cherry", 4) 
addItem("banana", 2) 
addItem("apple",8 ) 
  
for i,v in pairs(fruits) do 
    outputChatBox(tostring(i).." = "..tostring(v)) 
end 

Output:

banana = 7 
apple = 9 
cherry = 4 

I find but thanks anyway.

[iAxel]

Not sure if you are going to like that style (because of metatable usage - advanced sh0t)

  
Backpack = { } 
  
function Backpack:create() 
    local new = { items = { } } 
    return setmetatable(new, {__index = Backpack}) 
end 
  
function Backpack:add(item, amount) 
    self.items[item] = math.max(0, (self.items[item] or 0) + amount) 
end 
  
function Backpack:remove(item, amount) 
    self.items[item] = math.max(0, (self.items[item] or 0) - amount) 
end 
  
function Backpack:drop(item) 
   self.items[item] = nil  
end 
  
function Backpack:getItems() 
    local copy = { } 
    for item, amount in pairs(self.items) do 
        copy[item] = amount 
    end 
    return copy 
end 
  
function Backpack:getItemCount(item) 
    local count = (self.items[item] or 0) 
    return count 
end 
  
function Backpack:hasItem(item) 
    local count = self:getItemCount(item) 
    return (count > 0) 
end 
  
-- Example 
example = Backpack:create() 
example:add("apple", 3) 
example:add("apple", 3) 
example:add("apple", 3) 
example:add("banana", 2) 
example:add("cherry", 4) 
  
-- Gather every item collected 
local items = example:getItems() 
  
-- Show items in chatbox 
for name, amount in pairs(items) do 
    outputChatBox("* ".. name .. ": " .. amount) 
end 
  

Result:

* banana: 2 
* apple: 9 
* cherry: 4  

Please Add features such as:

That when creating the backpack could set the slot.

Function Backpack:getSlot().

Function destroy the backpack.

Function how busy slots.

Thanks in advance to you

p.s I`m noob, I beg you

[botder]

What do you mean with slots? This backpack "class" allows unlimited items.

You could of course give the items more variation by adding weight, expiration time, poison level, alcoholic level, max stack size. Furthermore, your backpack could also have more variation by adding different types with other base-weight, slot count (you probably mean that), durability and more.

[iAxel]

What do you mean with slots? This backpack "class" allows unlimited items.

You could of course give the items more variation by adding weight, expiration time, poison level, alcoholic level, max stack size. Furthermore, your backpack could also have more variation by adding different types with other base-weight, slot count (you probably mean that), durability and more.

I mean that's such functions

  
Backpack = {} 
  
function Backpack:create(slot) 
    local new = { 
        slots = slot, 
        items = {} 
    } 
    return setmetatable(new, {__index = Backpack}) 
end 
  
function Backpack:getSlots() 
    local slot = (self.slots) 
    return slot 
end 
  
Backpack:create(8) 
  

But then an error

[botder]

How do you use that Backpack "class" in your code?

Your given example code gives me no errors.

[iAxel]

I can not know a slot backpack

addCommandHandler('backpack', 
    function (player) 
        for name, amount in pairs(items) do 
            player:outputChat(name..': '..amount) 
        end 
        player:outputChat('Slot '..Backpack:getSlots()) 
    end 
) 

  
[2015-01-13 00:29:40] ERROR: [new_project]\project\inventory\backpack.lua:56: attempt to concatenate a nil value 
  

[botder]

You have to create a backpack for each player. There is no magic done behind my "class" which will automatically give each player an individual backpack. You have to do that part on your own.

I had the time and extended that class:

items.lua http://pastebin.com/EukyHHfH

backpack.lua http://pastebin.com/07HPp8kr

player.lua http://pastebin.com/0UzmRhys

[iAxel]

You have to create a backpack for each player. There is no magic done behind my "class" which will automatically give each player an individual backpack. You have to do that part on your own.

I had the time and extended that class:

items.lua http://pastebin.com/EukyHHfH

backpack.lua http://pastebin.com/07HPp8kr

player.lua http://pastebin.com/0UzmRhys

Thank you very much!