I have created a basic chunk generator, a chunk is area filled with squares, when the player moves a few blocks away from 0,0 it works correctly but after moving 4 chunks away it renders more then one chunk instead of one, I am not sure what I am doing wrong, I have given it a go changing some values, but I am left head scratching.
here is the full code, you can copy and paste into VSCODE with love2D to see what happens.
I think the main issue is somewhere around check_boarders function since that is what checks if the player is inside a chunk.
function Key_input(key)
if love.keyboard.isDown(key) then
return 1
else
return 0
end
end
function love.load()
Camera = require "camera"
Cam = Camera()
Basic_Player = {}
Basic_Player.X = 100
Basic_Player.Y = 100
Basic_Player.Speed = 15
Movement = {}
end
function love.update(dt)
Movement.X = Key_input("d") - Key_input("a")
Movement.Y = Key_input("s") - Key_input("w")
Basic_Player.X = Basic_Player.X + Movement.X * Basic_Player.Speed
Basic_Player.Y = Basic_Player.Y + Movement.Y * Basic_Player.Speed
Cam:lookAt(Basic_Player.X,Basic_Player.Y)
X, Y = Cam:position() -- Set cam position to global values
end
function love.draw()
love.graphics.setBackgroundColor(0.5,0.5,0.9)
Cam:attach() -- Renders the player and world inside its own scene
generate_world(10,0)
love.graphics.setColor( 0,0,1, 1 )
love.graphics.rectangle("fill",Basic_Player.X,Basic_Player.Y,30,30)
love.graphics.setColor( 1,1,1, 1 )
Cam:detach()
love.graphics.setColor( 1,0,0, 1 ) --Stays on the screen
love.graphics.print(X .. " / " .. Y ,300,400)
love.graphics.print(love.timer.getFPS( ) ,300,450)
love.graphics.setColor( 1,1,1, 1 )
end
function old_generate_world(_world_size, _seed) -- Before optimization
local _chunk_size = 30
local _block_size = 30
for i = 0, _world_size - 1 do
for f = 0, _world_size - 1 do
local x_val = (_chunk_size * _block_size) * i -- Position value for actually building the chunks
local y_val = (_chunk_size * _block_size) * f
gen_chunk(_chunk_size,_block_size,_seed,{X = x_val ,Y = y_val })
end
end
end
function generate_world(_world_size, _seed)
local _chunk_size = 10 -- Chunk size width and height
local _block_size = 30 -- block size inside the chunk
for i = 0, _world_size - 1 do -- loop through world size
for f = 0, _world_size - 1 do
local x_val = (_chunk_size * _block_size) * i -- Position value for actually building the chunks
local y_val = (_chunk_size * _block_size) * f
local chunk_x_local_size = 0 -- To make sure we get a length for when i and f = 0
local chunk_y_local_size = 0
if i == 0 then -- To make sure the size of the chunk isnt zero
chunk_x_local_size = _chunk_size * _block_size -- Get length of chunk when i = 0
else
chunk_x_local_size = x_val
end
if f == 0 then -- ditto
chunk_y_local_size = _chunk_size * _block_size
else
chunk_y_local_size = y_val
end
-- Checks if the player is inside a chunk if true draw it.
if Check_boarders({X = X,Y = Y},{X = x_val,Y = y_val}, {X = chunk_x_local_size, Y = chunk_y_local_size}) then
gen_chunk(_chunk_size,_block_size,_seed,{X = x_val ,Y = y_val }) -- Actually generate the chunk
end
love.graphics.setColor( 0,1,0, 1 )
love.graphics.rectangle("fill",x_val,y_val,15,15)
love.graphics.setColor( 1,1,1, 1 )
end
end
end
function Check_boarders(player_pos, boarder_pos, chunk_length) -- Checks player position is inside the boarder of the currently generated chunk
if player_pos.X > boarder_pos.X and player_pos.X < boarder_pos.X + chunk_length.X then -- Check if the player is greater then top left and less then top right
if player_pos.Y > boarder_pos.Y and player_pos.Y < boarder_pos.Y + chunk_length.Y then -- check if player is greater then top and less then bottom left
return true
end
end
return false
end
function gen_chunk(chunk_size,block_size,seed,position) -- chunk size is how many blocks inside the chunk, block size is self explain, seed n/a, pos starting chunk position
for i = 0, chunk_size - 1 do
for e = 0, chunk_size - 1 do -- loop until chunk size is met this is the amount of blocks being created
love.graphics.rectangle("fill",position.X + i * block_size,position.Y + e * block_size,block_size - 1,block_size - 1)
end
end
love.graphics.setColor( 1,0,0, 1 )
love.graphics.rectangle("fill",position.X ,position.Y,6,6)
love.graphics.setColor( 1,1,1, 1 )
end
You will need this camera.lua script just create it and paste this into it:
local _PATH = (...):match('^(.*[%./])[^%.%/]+$') or ''
local cos, sin = math.cos, math.sin
local camera = {}
camera.__index = camera
-- Movement interpolators (for camera locking/windowing)
camera.smooth = {}
function camera.smooth.none()
return function(dx,dy) return dx,dy end
end
function camera.smooth.linear(speed)
assert(type(speed) == "number", "Invalid parameter: speed = "..tostring(speed))
return function(dx,dy, s)
-- normalize direction
local d = math.sqrt(dx*dx+dy*dy)
local dts = math.min((s or speed) * love.timer.getDelta(), d) -- prevent overshooting the goal
if d > 0 then
dx,dy = dx/d, dy/d
end
return dx*dts, dy*dts
end
end
function camera.smooth.damped(stiffness)
assert(type(stiffness) == "number", "Invalid parameter: stiffness = "..tostring(stiffness))
return function(dx,dy, s)
local dts = love.timer.getDelta() * (s or stiffness)
return dx*dts, dy*dts
end
end
local function new(x,y, zoom, rot, smoother)
x,y = x or love.graphics.getWidth()/2, y or love.graphics.getHeight()/2
zoom = zoom or 1
rot = rot or 0
smoother = smoother or camera.smooth.none() -- for locking, see below
return setmetatable({x = x, y = y, scale = zoom, rot = rot, smoother = smoother}, camera)
end
function camera:lookAt(x,y)
self.x, self.y = x, y
return self
end
function camera:move(dx,dy)
self.x, self.y = self.x + dx, self.y + dy
return self
end
function camera:position()
return self.x, self.y
end
function camera:rotate(phi)
self.rot = self.rot + phi
return self
end
function camera:rotateTo(phi)
self.rot = phi
return self
end
function camera:zoom(mul)
self.scale = self.scale * mul
return self
end
function camera:zoomTo(zoom)
self.scale = zoom
return self
end
function camera:attach(x,y,w,h, noclip)
x,y = x or 0, y or 0
w,h = w or love.graphics.getWidth(), h or love.graphics.getHeight()
self._sx,self._sy,self._sw,self._sh = love.graphics.getScissor()
if not noclip then
love.graphics.setScissor(x,y,w,h)
end
local cx,cy = x+w/2, y+h/2
love.graphics.push()
love.graphics.translate(cx, cy)
love.graphics.scale(self.scale)
love.graphics.rotate(self.rot)
love.graphics.translate(-self.x, -self.y)
end
function camera:detach()
love.graphics.pop()
love.graphics.setScissor(self._sx,self._sy,self._sw,self._sh)
end
function camera:draw(...)
local x,y,w,h,noclip,func
local nargs = select("#", ...)
if nargs == 1 then
func = ...
elseif nargs == 5 then
x,y,w,h,func = ...
elseif nargs == 6 then
x,y,w,h,noclip,func = ...
else
error("Invalid arguments to camera:draw()")
end
self:attach(x,y,w,h,noclip)
func()
self:detach()
end
-- world coordinates to camera coordinates
function camera:cameraCoords(x,y, ox,oy,w,h)
ox, oy = ox or 0, oy or 0
w,h = w or love.graphics.getWidth(), h or love.graphics.getHeight()
-- x,y = ((x,y) - (self.x, self.y)):rotated(self.rot) * self.scale + center
local c,s = cos(self.rot), sin(self.rot)
x,y = x - self.x, y - self.y
x,y = c*x - s*y, s*x + c*y
return x*self.scale + w/2 + ox, y*self.scale + h/2 + oy
end
-- camera coordinates to world coordinates
function camera:worldCoords(x,y, ox,oy,w,h)
ox, oy = ox or 0, oy or 0
w,h = w or love.graphics.getWidth(), h or love.graphics.getHeight()
-- x,y = (((x,y) - center) / self.scale):rotated(-self.rot) + (self.x,self.y)
local c,s = cos(-self.rot), sin(-self.rot)
x,y = (x - w/2 - ox) / self.scale, (y - h/2 - oy) / self.scale
x,y = c*x - s*y, s*x + c*y
return x+self.x, y+self.y
end
function camera:mousePosition(ox,oy,w,h)
local mx,my = love.mouse.getPosition()
return self:worldCoords(mx,my, ox,oy,w,h)
end
-- camera scrolling utilities
function camera:lockX(x, smoother, ...)
local dx, dy = (smoother or self.smoother)(x - self.x, self.y, ...)
self.x = self.x + dx
return self
end
function camera:lockY(y, smoother, ...)
local dx, dy = (smoother or self.smoother)(self.x, y - self.y, ...)
self.y = self.y + dy
return self
end
function camera:lockPosition(x,y, smoother, ...)
return self:move((smoother or self.smoother)(x - self.x, y - self.y, ...))
end
function camera:lockWindow(x, y, x_min, x_max, y_min, y_max, smoother, ...)
-- figure out displacement in camera coordinates
x,y = self:cameraCoords(x,y)
local dx, dy = 0,0
if x < x_min then
dx = x - x_min
elseif x > x_max then
dx = x - x_max
end
if y < y_min then
dy = y - y_min
elseif y > y_max then
dy = y - y_max
end
-- transform displacement to movement in world coordinates
local c,s = cos(-self.rot), sin(-self.rot)
dx,dy = (c*dx - s*dy) / self.scale, (s*dx + c*dy) / self.scale
-- move
self:move((smoother or self.smoother)(dx,dy,...))
end
-- the module
return setmetatable({new = new, smooth = camera.smooth},
{__call = function(_, ...) return new(...) end})
local delay = math.random(25, 50)
[string "LuaVM"]:5: attempt to index a nil value (global 'math')
I can't use math.random anymore is there any way to fix this ?
If math library is missed you can insert the following code block at the beginning of your script.
It will not fix the whole math library, but only some of the most frequently used functions (including math.random).
It will also fix the following errors:
bad argument #1 to 'Sleep' (number has no integer representation)
attempt to call a nil value (field 'getn')
do
local state_8, state_45, cached_bits, cached_bits_qty = 2, 0, 0, 0
local prev_width, prev_bits_in_factor, prev_k = 0
for c in GetDate():gmatch"." do
state_45 = state_45 % 65537 * 23456 + c:byte()
end
local function get_53_random_bits()
local value53 = 0
for shift = 26, 27 do
local p = 2^shift
state_45 = (state_45 * 233 + 7161722017421) % 35184372088832
repeat state_8 = state_8 * 76 % 257 until state_8 ~= 1
local r = state_8 % 32
local n = state_45 / 2^(13 - (state_8 - r) / 32)
n = (n - n%1) % 2^32 / 2^r
value53 = value53 * p + ((n%1 * 2^32) + (n - n%1)) % p
end
return value53
end
for j = 1, 10 do get_53_random_bits() end
local function get_random_bits(number_of_bits)
local pwr_number_of_bits = 2^number_of_bits
local result
if number_of_bits <= cached_bits_qty then
result = cached_bits % pwr_number_of_bits
cached_bits = (cached_bits - result) / pwr_number_of_bits
else
local new_bits = get_53_random_bits()
result = new_bits % pwr_number_of_bits
cached_bits = (new_bits - result) / pwr_number_of_bits * 2^cached_bits_qty + cached_bits
cached_bits_qty = 53 + cached_bits_qty
end
cached_bits_qty = cached_bits_qty - number_of_bits
return result
end
table = table or {}
table.getn = table.getn or function(x) return #x end
math = math or {}
math.huge = math.huge or 1/0
math.abs = math.abs or function(x) return x < 0 and -x or x end
math.floor = math.floor or function(x) return x - x%1 end
math.ceil = math.ceil or function(x) return x + (-x)%1 end
math.min = math.min or function(x, y) return x < y and x or y end
math.max = math.max or function(x, y) return x > y and x or y end
math.sqrt = math.sqrt or function(x) return x^0.5 end
math.pow = math.pow or function(x, y) return x^y end
math.frexp = math.frexp or
function(x)
local e = 0
if x == 0 then
return x, e
end
local sign = x < 0 and -1 or 1
x = x * sign
while x >= 1 do
x = x / 2
e = e + 1
end
while x < 0.5 do
x = x * 2
e = e - 1
end
return x * sign, e
end
math.exp = math.exp or
function(x)
local e, t, k, p = 0, 1, 1
repeat e, t, k, p = e + t, t * x / k, k + 1, e
until e == p
return e
end
math.log = math.log or
function(x)
assert(x > 0)
local a, b, c, d, e, f = x < 1 and x or 1/x, 0, 0, 1, 1
repeat
repeat
c, d, e, f = c + d, b * d / e, e + 1, c
until c == f
b, c, d, e, f = b + 1 - a * c, 0, 1, 1, b
until b <= f
return a == x and -f or f
end
math.log10 = math.log10 or
function(x)
return math.log(x) / 2.3025850929940459
end
math.random = math.random or
function(m, n)
if m then
if not n then
m, n = 1, m
end
local k = n - m + 1
if k < 1 or k > 2^53 then
error("Invalid arguments for function 'random()'", 2)
end
local width, bits_in_factor, modk
if k == prev_k then
width, bits_in_factor = prev_width, prev_bits_in_factor
else
local pwr_prev_width = 2^prev_width
if k > pwr_prev_width / 2 and k <= pwr_prev_width then
width = prev_width
else
width = 53
local width_low = -1
repeat
local w = (width_low + width) / 2
w = w - w%1
if k <= 2^w then
width = w
else
width_low = w
end
until width - width_low == 1
prev_width = width
end
bits_in_factor = 0
local bits_in_factor_high = width + 1
while bits_in_factor_high - bits_in_factor > 1 do
local bits_in_new_factor = (bits_in_factor + bits_in_factor_high) / 2
bits_in_new_factor = bits_in_new_factor - bits_in_new_factor%1
if k % 2^bits_in_new_factor == 0 then
bits_in_factor = bits_in_new_factor
else
bits_in_factor_high = bits_in_new_factor
end
end
prev_k, prev_bits_in_factor = k, bits_in_factor
end
local factor, saved_bits, saved_bits_qty, pwr_saved_bits_qty = 2^bits_in_factor, 0, 0, 2^0
k = k / factor
width = width - bits_in_factor
local pwr_width = 2^width
local gap = pwr_width - k
repeat
modk = get_random_bits(width - saved_bits_qty) * pwr_saved_bits_qty + saved_bits
local modk_in_range = modk < k
if not modk_in_range then
local interval = gap
saved_bits = modk - k
saved_bits_qty = width - 1
pwr_saved_bits_qty = pwr_width / 2
repeat
saved_bits_qty = saved_bits_qty - 1
pwr_saved_bits_qty = pwr_saved_bits_qty / 2
if pwr_saved_bits_qty <= interval then
if saved_bits < pwr_saved_bits_qty then
interval = nil
else
interval = interval - pwr_saved_bits_qty
saved_bits = saved_bits - pwr_saved_bits_qty
end
end
until not interval
end
until modk_in_range
return m + modk * factor + get_random_bits(bits_in_factor)
else
return get_53_random_bits() / 2^53
end
end
local orig_Sleep = Sleep
function Sleep(x)
return orig_Sleep(x - x%1)
end
end
I'm very slowly working my way through the games track of cs50, and I am stuck on Mario3. In the video he just talks about the code, but I wanted to write it into my own that I am writing alongside the video. I have the exact same code that he does, but I keep getting this error and I cannot figure out why. I will post the code below, but as far as I can tell, I have already assigned self.mapWidth = 30, so I don't know why it keeps saying that it is a nil value.
Here is the error
Error code
Here is the map.lua code
require 'Util'
Map = Class{}
TILE_BRICK = 1
TILE_EMPTY = 4
--cloud tiles
CLOUD_LEFT = 6
CLOUD_RIGHT = 7
SCROLL_SPEED = 62
function Map:init()
self.spritesheet = love.graphics.newImage('graphics/spritesheet.png')
self.tileWidth = 16
self.tileHeight = 16
self.mapWidth = 30
self.mapHeight = 28
self.tiles = {}
self.camX = 0
self.camY = 0
self.mapWidthPixels = self.mapWidth * self.tileWidth
self.mapHeightPixels = self.mapHeight * self.tileHeight
self.tileSprites = generateQuads(self.spritesheet, self.tileWidth, self.tileHeight)
--fill map with empty tiles--
for y = 1, self.mapHeight do
for x = 1, self.mapWidth do
self:setTile(x, y, TILE_EMPTY)
end
end
for y =self.mapHeight / 2, self.mapHeight do
for x = 1, self.mapWidth do
self:setTile(x, y, TILE_BRICK)
end
end
end
function Map:setTile(x, y, tile)
self.tiles[(y - 1) * self.mapWidth + x] = tile
end
function Map:getTile(x, y)
return self.tiles[(y -1) * self.mapWidth + x]
end
local x = 1
while x < self.mapWidth do
if math.random(20) == 1 then
local cloudStart = math.random(self.mapHeight / 2 -6)
self.setTile(x, cloudStart, CLOUD_LEFT)
self:setTile(x + 1, cloudStart, CLOUD_RIGHT)
end
end
function Map:update(dt)
if love.keyboard.isDown('w') then
self.camY = math.max(0, math.floor(self.camY - SCROLL_SPEED * dt))
elseif love.keyboard.isDown('s') then
self.camY = math.min(self.mapHeightPixels - VIRTUAL_HEIGHT, math.floor(self.camY + SCROLL_SPEED * dt))
elseif love.keyboard.isDown('a') then
self.camX = math.max(0, math.floor(self.camX - SCROLL_SPEED *dt))
elseif love.keyboard.isDown('d') then
self.camX = math.min(self.mapWidthPixels - VIRTUAL_WIDTH, math.floor(self.camX + SCROLL_SPEED * dt))
end
end
function Map:render()
for y = 1, self.mapHeight do
for x = 1, self.mapWidth do
love.graphics.draw(self.spritesheet, self.tileSprites[self:getTile(x, y)],
(x - 1) * self.tileWidth, (y - 1) * self.tileHeight)
end
end
end
and in case you need it, here is my main.lua code
WINDOW_WIDTH = 1200
WINDOW_HEIGHT = 720
VIRTUAL_WIDTH = 432
VIRTUAL_HEIGHT = 243
Class = require 'class'
push = require 'push'
require 'Util'
require 'Map'
function love.load()
map = Map()
love.graphics.setDefaultFilter('nearest', 'nearest')
push:setupScreen(VIRTUAL_WIDTH,VIRTUAL_HEIGHT,WINDOW_WIDTH,WINDOW_HEIGHT, {
fullscreen = false,
resizable = false,
vsync = true
})
end
function love.update(dt)
map:update(dt)
if love.keyboard.isDown('escape') then
love.event.quit()
end
end
function love.draw()
push:apply('start')
love.graphics.translate(math.floor(-map.camX),math.floor(-map.camY))
love.graphics.clear(108/255, 140/255, 1, 1)
map:render()
push:apply('end')
end
Thanks in advance for any and all help.
function Map:SomeFunction() end is syntactic sugar for Map["SomeFunction"] = function(self) end
Therefor you can use self inside a function defined with the colon syntax.
Outside of such a function self is nil.
Yet you index self several times in this while loop where self is nil.
local x = 1
while x < self.mapWidth do
if math.random(20) == 1 then
local cloudStart = math.random(self.mapHeight / 2 -6)
self.setTile(x, cloudStart, CLOUD_LEFT)
self:setTile(x + 1, cloudStart, CLOUD_RIGHT)
end
end
which is an infinite loop btw.
I have the following lua code snippet (that uses cairo)
cairo_set_source_rgba(cr, COLOR_FONT_R, COLOR_FONT_G, COLOR_FONT_B, 1)
cairo_set_font_size(cr, 0.011 * WINDOW_HEIGHT)
local ps_str = conky_parse("${exec ps -Ao comm,pcpu,%mem --sort=-pcpu | head -n 15}")
local processes = {}
for line in string.gmatch(ps_str, '([^\n]+)') do
table.insert(processes, line)
end
for line = 1,table.getn(processes) do
cairo_move_to(cr, 0.213 * WINDOW_WIDTH, 0.443 * WINDOW_HEIGHT + line * 0.014 * WINDOW_HEIGHT)
cairo_show_text(cr, processes[line])
end
cairo_stroke(cr)
However, when I run it through conky, I get the following error (this is in the line, 5 lines from the end).
I get the error: attempt to call a nil value (field 'getn')
I have tried a few things suggested here, but I am not sure how to fix this so was wondering if there is an easy fix.
The suggested solution in the comments works beautifully for the above but not for the following:
function conky_geo_dotspiral(cx_str, cy_str, ...)
local cx = conky_to_num(cx_str)
local cy = conky_to_num(cy_str)
local arms = math.ceil(24 / table.getn(arg)) * table.getn(arg)
local rows = 10
local radius0, radius1 = 50, 140
local dotradius = 4
for i,v_str in ipairs(arg) do
v = conky_to_num(conky_parse(v_str))
for j = i-1, arms - 1, table.getn(arg) do
local p = j / arms
for k = 0, v / rows do
local dx = cx + (radius0 + (radius1-radius0) * k/rows) * math.cos(p * 2*math.pi + k * math.pi/arms)
local dy = cy + (radius0 + (radius1-radius0) * k/rows) * math.sin(p * 2*math.pi + k * math.pi/arms)
cairo_arc (cr, dx, dy, dotradius, 0, 2 * math.pi)
cairo_fill(cr)
end
end
end
end
I get the error:
attempt to call a nil value (field 'getn')
I tried replacing table.getn(arg) with #arg but still get the error.
conky: llua_do_call: function conky_geo_dotspiral execution failed: conky_geometry.lua:155: attempt to get length of a nil value (global 'arg')
Here is the code snippet, fixed:
cairo_set_source_rgba(cr, COLOR_FONT_R, COLOR_FONT_G, COLOR_FONT_B, 1)
cairo_set_font_size(cr, 0.011 * WINDOW_HEIGHT)
local ps_str = conky_parse("${exec ps -Ao comm,pcpu,%mem --sort=-pcpu | head -n 15}")
local processes = {}
for line in string.gmatch(ps_str, '([^\n]+)') do
table.insert(processes, line)
end
for line = 1,#processes do
cairo_move_to(cr, 0.213 * WINDOW_WIDTH, 0.443 * WINDOW_HEIGHT + line * 0.014 * WINDOW_HEIGHT)
cairo_show_text(cr, processes[line])
end
cairo_stroke(cr)
And the code snippet, fixed for the second question is:
function conky_geo_dotspiral(cx_str, cy_str, ...)
local cx = conky_to_num(cx_str)
local cy = conky_to_num(cy_str)
local arms = math.ceil(24 / #arg) * #arg
local rows = 10
local radius0, radius1 = 50, 140
local dotradius = 4
for i,v_str in ipairs(arg) do
v = conky_to_num(conky_parse(v_str))
for j = i-1, arms - 1, #arg do
local p = j / arms
for k = 0, v / rows do
local dx = cx + (radius0 + (radius1-radius0) * k/rows) * math.cos(p * 2*math.pi + k * math.pi/arms)
local dy = cy + (radius0 + (radius1-radius0) * k/rows) * math.sin(p * 2*math.pi + k * math.pi/arms)
cairo_arc (cr, dx, dy, dotradius, 0, 2 * math.pi)
cairo_fill(cr)
end
end
end
return ''
end
Thanks for all the suggestions that went into fixing this code.
I am trying to get it to read from a file x y z coordinates into a 3d array. But it does not seem to be working.
file is located in same folder as the .lua script
-9649.481 666.4141 117.3444
-9475.624 563.4871 116.0533
-9338.459 432.295 137.4043
function lines_from(file)
if not file_exists(file) then return {} end
for line in io.lines(file) do
tokens = {};
itr = 1;
for token in string.gmatch(line, "[^%s]+") do
tokens[ itr ] = token;
itr = itr + 1;
end
x = tokens[1];
y = tokens[2];
z = tokens[3];
g_lines_from[g_lines_fromCount] = { x, y, z };
g_lines_fromCount = g_lines_fromCount + 1;
end
end
function AddAll()
for i = 1, g_lines_from, 1 do
x, y, z = g_lines_from[i];
ListBoxEntry.Create( g_lbWaypoints, "X: " .. math.floor( x ) .. ", Y: " .. math.floor( y ) .. ", Z: " .. math.floor( z ) );
end
end
function OnAddWaypointClicked( eventID, button )
local file = "mine1-75.txt";
lines_from(file);
AddAll();
end;
Try the following function:
function readwaypoints(filename, numberofwaypoints)
local file = io.open(filename)
local waypoints = {}
for n = 1, numberofwaypoints do
local x, y, z
x = file:read('*n')
y = file:read('*n')
z = file:read('*n')
waypoints[#waypoints+1] = {['x'] = x, ['y'] = y, ['z'] = z}
end
file:close()
return waypoints
end
It takes a file name and the number of lines in the file. For your example file, it should return a table like this:
{[1] = {x = -9649.481, y = 666.4141, z = 117.3444},
[2] = {x = -9475.624, y = 563.4871, z = 116.0533},
[3] = {x = -9338.459, y = 432.295, z = 137.4043}}