Why does this code render no objects on the screen? - object

Question

Did I mess up something somewhere? If i put a putsxy in the same box, it renders a string just fine, but for some reason this code hates objects. What this code is supposed to do is render a set of randomly positioned 't's on the screen, and this works fine without objects. However, when I add objects, nothing renders. What am I doing wrong? Help is much appreciated. Code is as follows:
-------------------------------
-- Asterix v0.0.3 --
-- Copyright 2013 WilliamTDR. --
-------------------------------
-- prerequestities --
require "actions" -- button input
require "math" -- random numbers
-- Global Variables --
local player = {
health = 20, -- player health
foodparts = 12, -- portions of food until the food level depletes by one
food = 40, -- player food
x = 50, -- player x position
y = 50, -- player y position
roomx = 0, -- x value of room player is in
roomy = 0 -- y value of room player is in
}
local object = {
x = 30,
y = 30,
roomx = 0,
roomy = 0,
name = "Unknown Object",
touchingplayer = false,
symbol = "u"
}
local objects = {}
function object:new (o)
o = o or {} -- create object if user does not provide one
setmetatable(o, self)
self.__index = self
return o
end
function player.refresh()
-- reset player values
player.food = 40
player.health = 20
player.foodparts = 12
player.x = 50
player.y = 50
player.roomx = 0
roomy = 0
end
function player.die()
rb.lcd_clear_display() -- clear the display
rb.lcd_putsxy(1, 7, "You have died!")
rb.lcd_putsxy(1, 45, "Respawning in 3...")
rb.lcd_update()
rb.sleep(rb.HZ) -- sleep for one second
rb.lcd_putsxy(1, 45, "Respawning in 2...")
rb.lcd_update()
rb.sleep(rb.HZ)
rb.lcd_putsxy(1, 45, "Respawning in 1...")
rb.lcd_update()
rb.sleep(rb.HZ)
player.refresh()
render()
end
function renderobjects()
for _,object in ipairs(objects) do
if player.roomx == object.roomx and player.roomy == object.roomy then
rb.putsxy(object.x, object.y, object.symbol)
end
end
rb.lcd_update()
end
function createnewobjects()
obj1 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj2 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj3 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj4 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj5 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj6 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj7 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj8 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj9 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj10 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj11 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj12 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj13 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj14 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj15 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj16 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj17 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj18 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj19 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
obj20 = object:new{x = math.random(1,92), y = math.random(1,92), roomx = 0, roomy = 0, symbol = "t", name = "Tree"}
table.insert(obj1, objects)
table.insert(obj2, objects)
table.insert(obj3, objects)
table.insert(obj4, objects)
table.insert(obj5, objects)
table.insert(obj6, objects)
table.insert(obj7, objects)
table.insert(obj8, objects)
table.insert(obj9, objects)
table.insert(obj10, objects)
table.insert(obj11, objects)
table.insert(obj12, objects)
table.insert(obj13, objects)
table.insert(obj14, objects)
table.insert(obj15, objects)
table.insert(obj16, objects)
table.insert(obj17, objects)
table.insert(obj18, objects)
table.insert(obj19, objects)
table.insert(obj20, objects)
end
function checks()
if player.foodparts < 1 then
player.foodparts = 12
player.food = player.food - 1
end
if player.food < 1 then
player.health = player.health - 1
end
if player.health < 1 then
player.die()
end
if player.x < 1 then
player.roomx = player.roomx + 1
createnewobjects()
player.x = 92
end
if player.x > 93 then
player.roomx = player.roomx - 1
createnewobjects()
player.x = 4
end
if player.y < 1 then
player.roomy = player.roomy + 1
createnewobjects()
player.y = 92
end
if player.y > 93 then
player.roomy = player.roomy - 1
renderobjects()
player.y = 4
end
end
function render()
checks()
rb.lcd_set_background(0, 255, 0) -- background is black
rb.lcd_set_foreground(-1, 0, 0) -- foreground is white
rb.lcd_clear_display()
rb.lcd_fillrect(5, 3, (player.health * 2), 2)
rb.lcd_set_foreground(88, 2, 2)
rb.lcd_fillrect(45, 3, player.food, 2)
rb.lcd_set_foreground(125, 125, 0)
rb.lcd_putsxy(player.x, player.y, "*")
renderobjects()
rb.lcd_update()
end
function LoadGame()
render()
while true do
button = rb.get_plugin_action(0)
if button == 182 then
player.x = player.x - 1
player.foodparts = player.foodparts - 1
render()
elseif button == 183 then
player.x = player.x + 1
player.foodparts = player.foodparts - 1
render()
elseif button == 180 then
player.y = player.y - 1
player.foodparts = player.foodparts - 1
render()
elseif button == 181 then
player.y = player.y + 1
player.foodparts = player.foodparts - 1
render()
elseif button == 186 then
player.x = player.x - 4
player.foodparts = player.foodparts - 4
LoadGame()
elseif button == 187 then
player.x = player.x + 4
player.foodparts = player.foodparts - 4
LoadGame()
elseif button == 184 then
player.y = player.y - 4
player.foodparts = player.foodparts - 4
LoadGame()
elseif button == 185 then
player.y = player.y + 4
player.foodparts = player.foodparts - 4
LoadGame()
elseif button == 191 then
ShowMainMenu() -- start the program by displaying the main menu of the script.
end
end
end
function ShowMainMenu()
mainmenu = {"New Game", "Load Game", "About MCRE", "Exit"}
while true do
s = rb.do_menu("Asterix v0.0.1", mainmenu, nil, false)
if s == 0 then LoadGame()
elseif s == 1 then rb.splash(3 * rb.HZ, "No maps found! Create one first.")
elseif s == 2 then rb.splash(5 * rb.HZ, "Game ©2013 WilliamTDR. Version 0.0.1, build 4. Minecraft is a registered trademark of Notch Development AB.")
elseif s == 3 then os.exit()
elseif s == -2 then os.exit()
else rb.splash(2 * rb.HZ, "Whoops: Unexpected Button press!" .. s)
end
end
end
ShowMainMenu() -- start the program by displaying the main menu of the script.

Answer 1

You need to swap the order of the arguments to table.insert -- it should be
table.insert(objects, obj1)
not
table.insert(obj1, objects)
You can also use
setmetatable(objects,{__index=table})
objects:insert(obj1)
-- etc.