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Save a map
Posted: Sun Feb 28, 2016 11:13 pm
by Manyrio
Hey ! I am working on a game and I want to save my map but I don't know how ...
here's how I create my map and draw it
Code: Select all
function love.load()
map = {}
map.width = 10
map.height = 10
for x = 0, map.width do
map[x] = {}
for y = 0, map.height do
if y < 5 then
map[x][y] = 1
elseif y == 5 then
map[x][y] = 3
elseif y == 5+1 then
map[x][y] = 3
elseif y == 5+2 then
map[x][y] = math.random(2,3)
else
map[x][y] = 2
end
end
end
end
function love.draw()
love.graphics.setColor(255,255,255,255)
for x = 0, map.width do
for y = 0, map.height do
if map[x][y] == 3 then
love.graphics.rectangle("line",x*32,y*32,32,32)
elseif map[x][y] == 2 then
love.graphics.rectangle("fill",x*32,y*32,32,32)
end
end
end
end
function mapCollide(x, y)
local checkMap = map[math.floor(x/32)][math.floor(y/32)]
return checkMap
end
function love.update(dt)
local mapX = math.floor(love.mouse.getX()/32)
local mapY = math.floor(love.mouse.getY()/32)
if love.mouse.isDown(1) and mapCollide(love.mouse.getX(), love.mouse.getY()) == 1 then
map[mapX][mapY] = 2
end
if love.mouse.isDown(2) and mapCollide(love.mouse.getX(), love.mouse.getY()) < 5 then
map[mapX][mapY] = 1
end
end
I made this with LÖVE 0.10.1. I tried to save my map with filesystem but I failed
Please help
Re: Save a map
Posted: Mon Feb 29, 2016 3:20 am
by Sosolol261
You can either translate the table to a string and then store it onto a file and read it afterward, or you can use a lib. Not sure what the name was but there was a library that stores tables onto files for you.
Re: Save a map
Posted: Mon Feb 29, 2016 6:45 am
by Robin
You could use
bitser for example, like this:
Code: Select all
local bitser = require "bitser"
...
function SaveGame(filename)
bitser.dumpLoveFile(filename, map)
end
function LoadGame(filename)
map = bitser.loadLoveFile(filename)
end
Re: Save a map
Posted: Mon Feb 29, 2016 9:10 am
by Manyrio
Thank you I am testing this lib but is there a tutorial for bister ? I didn't find one ...
Re: Save a map
Posted: Mon Feb 29, 2016 10:24 am
by Robin
There isn't really a tutorial yet, but I don't know if it needs one. The snippet I gave above really has all you need.
Re: Save a map
Posted: Mon Feb 29, 2016 10:45 am
by ivan
While binser and ser are great libraries,
with maps I think it's more useful to save the table as a string/txt,
so you can inspect the result visually.
The obvious limitation is that
you have to use single characters for
each map value (instead of numbers).
If you insist on using numbers,
you can convert using string.byte(c)/string.char(n)
Something like:
Code: Select all
-- dump map to string
-- considerably less convenient since you have map[x][y] instead of map[y][x]
function map2string(map)
local sz = ''
for y = 1, h do
local row = {}
for x = 1, w do
local c = map[x][y]
c = (c ~= nil) and c or ' ' -- optional: replace nil with space
if not tostring(c):len() == 1 then
error("non-ANSI character on:" .. x .. ',' .. y)
end
row[x] = c
end
sz = sz .. table.concat(row) .. '\n'
end
return sz
end
Load map from string:
Code: Select all
function string2map(sz)
local map = {}
local x, y = 1, 1
for l in string.gmatch(sz, "(.-)\n") do
-- for each character
map[x] = map[x] or {}
for c in string.gmatch(l, ".") do
map[x][y] = c
x = x + 1
end
x, y = 1, y + 1
end
return map
end
Re: Save a map
Posted: Mon Feb 29, 2016 12:54 pm
by Manyrio
Thank you it's work
