My project structure is following:
--Shooter
----sprites
------background.png
------player.png
------zombie.png
----units
------player.lua
------zombie.lua
----main.lua
----load.lua
----update.lua
----draw.lua
And my main.lua will have the following:
local Bullet = require("units.bullet")
local Player = require("units.player")
local Zombie = require("units.zombie")
require("load")
require("update")
require("draw")
require("functions")
love.window.setTitle("Shooter")
function love.load()
Load()
end
function love.update(dt)
Update(dt)
end
function love.draw()
Draw()
end
For example, bullet.lua:
local Bullet = {}
bulletSprite = love.graphics.newImage('sprites/bullet.png')
function Bullet.create()
local newBullet = {
pos = {},
speed = 10,
sprite = bulletSprite,
direction = 0,
dead = false
}
return setmetatable(newBullet, {__index = Bullet})
end
function Bullet:setPos(x, y)
self.pos.x = x
self.pos.y = y
end
function Bullet:setDirection(angle)
self.direction = angle
end
function Bullet:move(dt)
local distance = self.speed * dt * 60
self.pos.x = self.pos.x + math.cos(self.direction) * distance
self.pos.y = self.pos.y + math.sin(self.direction) * distance
end
function spawnBullet(bullets, player)
local newBullet = Bullet.create()
newBullet:setPos(player.pos.x, player.pos.y)
newBullet.direction = player.angle
table.insert(bullets, newBullet)
end
The problem is that none of the files in units folder will load properly. From the error log I can see that it tries to search for bullet.lua in the root directory and then various love2d and lua libraries.
I have tried various things like require("./units/bullet") or replace / with . but so far, no luck.
Extracting those files from the units folder into root folder will work. Loading images from sprites folder works, however (for example love.graphics.draw(sprites.background, 0, 0)).
Any help?
I found out the problem was that while my main.lua had correct requires, my update file didn't.
Two things come to mind.
Make Sure LUA_PATH is set to your project directory
add return Bullet, return Player and so on... into each module you have created
Related
So, For Context im trying to emulate kind of like throwing an axe, when you throw an axe it spins and spins and spins vertically.However, I got the spinning part right but the axis that is at, is not right the axe it should be facing vertically not facing you, i will post a gyazo link just so u can see how it spins right now. https://gyazo.com/99eaa8c1b5b3ce22205148509e115b14
Ive tried a couple things, ive tweend it, i thought that would work, as tweening it i can do it infinitley, But the result was it being still. I also tried pivoting it, But because of my courtine. Sometimes it wouldnt even go through
Heres The roblox code
local function ZodiacMove(plr,Mouse)
local TestingCourotine = coroutine.create(function(Handle)
while true do RunService.Stepped:Wait()
print(Handle)
Handle.CFrame = Handle.CFrame * CFrame.Angles(0,0,math.rad(10))
if Handle.Parent == nil then break end
end
print('the axe has vanished :sob:')
end)
local ZodiacProjectile = game:GetService("ReplicatedStorage").Axe:Clone()
local Handle = ZodiacProjectile:FindFirstChild("Blade")["Blade Tip"]
print(Handle)
local ZodiacProjectilePivot = ZodiacProjectile:GetPivot()
ZodiacProjectile:PivotTo(ZodiacProjectilePivot * CFrame.new(math.rad(10),0,0))
coroutine.resume(TestingCourotine,Handle)
---TweenInfoGoals.CFrame = Handle.CFrame * CFrame.Angles(0,0,math.rad(360))
--local ZodiacProjectileTween = TweenService:Create(Handle, tweenInfo,TweenInfoGoals)
--ZodiacProjectileTween:Play()
local OverParams = OverlapParams.new()
OverParams.FilterType = Enum.RaycastFilterType.Blacklist
OverParams.FilterDescendantsInstances = {workspace.Baseplate, plr.Character, plr.Character:GetChildren()}
local HumanoidRootPart = plr.Character:WaitForChild("HumanoidRootPart")
local BV = Instance.new("BodyVelocity")
BV.Parent = Handle
ZodiacProjectile.Parent = HumanoidRootPart
BV.Velocity = HumanoidRootPart.CFrame.LookVector * 100
BV.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
ZodiacProjectile:PivotTo( HumanoidRootPart.CFrame * CFrame.new(0, 0, -1))
Debris:AddItem(ZodiacProjectile,2)
end```
I add a mesh to follow the player where ever he goes. But the mesh is lagging a bit when the player runs. I understand that it is not rendering quickly enough, but anyone know how to add a mesh without it lagging?
local humanoidRootPart = character:WaitForChild('HumanoidRootPart')
local backpackItemWorkspace = game.ReplicatedStorage.Meshes[pet.Name]:Clone()
backpackItemWorkspace.Parent = game.Workspace.CurrentPets
RunService.Stepped:Connect(function()
local location = humanoidRootPart.CFrame
backpackItemWorkspace.CFrame = location * CFrame.new(2, 2, 3)
end)
Connect the mesh and rootpart using a weld, so you dont need to use RunService to move the mesh everytime.
local humanoidRootPart = character:WaitForChild('HumanoidRootPart')
local backpackItemWorkspace = game.ReplicatedStorage.Meshes[pet.Name]:Clone()
backpackItemWorkspace.Parent = game.Workspace.CurrentPets
function attach(hroot, mesh)
local weld = Instance.new("WeldConstraint", mesh)
local location = hroot.CFrame
mesh.CFrame = location + Vector3.new(2, 2, 3)
weld.Part0 = hroot
weld.Part1 = mesh
return weld
end
attach(humanoidRootPart, backpackItemWorkspace)
-- please comment if it makes any errors
Ok, for others struggling with having a pet(mesh) follow you smoothly and always stay on your back. I have now spent several hours on this subject and finally got it to work. This is how you do it:
local character = player.Character
local humanoidRootPart = character:WaitForChild('HumanoidRootPart')
//where you copy you pet from
local backpackItemWorkspace = game.ReplicatedStorage.Meshes[pet.Name]:Clone()
//where you keep your pets in the workspace
backpackItemWorkspace.Parent = game.Workspace.CurrentPets
//call the function for attaching the pet
attachPet(backpackItemWorkspace, character, humanoidRootPart)
function attachPet (pet, char, humanoidRootPart)
local focusPart = humanoidRootPart
local newPet = pet
local z = -5
local x = 1
local bodyPos = Instance.new("BodyPosition")
bodyPos.Parent = newPet
bodyPos.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
local bodyGyro = Instance.new("BodyGyro")
bodyGyro.Parent = newPet
bodyGyro.MaxTorque = Vector3.new(math.huge, math.huge, math.huge)
while wait() do
bodyPos.Position = focusPart.Position + focusPart.CFrame.LookVector * z + focusPart.CFrame.RightVector * x
bodyGyro.CFrame = focusPart.CFrame
end
end
Also when you unequip a pet you have to Destroy it from where you store it. In my case I store them in a folder on the player which I call collectionInventory.
local collectionInventory = player:WaitForChild("CollectionInventory")
collectionInventory[petName]:Destroy()
Hope this save anybody else from wasting several hours with research. Even though you will probably learn a lot from those "wasted hours" ;)
I tried to make an item spawn every 60 seconds and in one of two locations, but when I tried to use vector3 it didn't spawn in the location of the "spawnplace1" or "spawnplace2", but it spawned ontop of the roka being copied and didn't move. Also I don't think I can hold the copied roka's either. Here's the code!
local roka = workspace["Rokakaka Fruit"]
local itemspawns = workspace.ItemSpawnLocals
local itemspawn1 = itemspawns["Item Spawn 1"]
local itemspawn2 = itemspawns["Item Spawn 2"]
local place1 = itemspawn1.Position
local place2 = itemspawn2.Position
wait(60)
local spawnplace1 = math.random(1,2)
local spawnplace2 = math.random(1,2)
if spawnplace1 == 1 then
roka2 = roka:Clone()
roka2.Parent = workspace
local roka2handle = roka2.Handle
roka2handle.Position = Vector3.new(itemspawn1)
elseif spawnplace1 == 2 then
roka2 = roka:Clone()
roka2.Parent = workspace
local roka2handle = roka2.Handle
roka2handle.Position = Vector3.new(itemspawn2)
end
print(spawnplace1)
print(spawnplace2)
The Vector3 holds coordinates of a point in 3D space. You have only provided 1 of 3 pieces of information in the constructor. To construct a Vector3, you need to provide the Y and Z axes as well, like this :
roka2handle.Position = Vector3.new(1, 2, 3)
But you don't need to explicitly create a Vector3 to get your code working. You can just assign the positions of the spawn locations to your newly created fruit, and that should do the trick. This way, you can add lots more spawn locations, and you don't need to update the script each time.
-- grab some things from the workspace
local roka = workspace["Rokakaka Fruit"]
local itemSpawns = workspace.ItemSpawnLocals
-- choose a random spawn location
local spawnLocations = itemSpawns:GetChildren()
local spawnNumber = math.random(1, #spawnLocations)
local spawnPosition = spawnLocations[spawnNumber].Position
-- spawn and move a new fruit to one of the spawn locations
roka2 = roka:Clone()
roka2.Parent = workspace
local roka2handle = roka2.Handle
roka2handle.Position = spawnPosition
-- debug
print("spawning fruit at : ", spawnPosition)
As a side note, if roka2 is a Model, you may want to consider using roka2:SetPrimaryPartCFrame( CFrame.new(spawnPosition)) to move it around.
I was wondering if it is possible to create multiple of the same object that is written in a separate file.
I have two files: main.lua and player.lua.
This is player.lua:
local player = { }
function player:create (x, y, sp)
self.img = love.graphics.newImage ('images/player.png')
self.x = x
self.y = y
self.speed = sp
end
return player
I want to include this file in main.lua. I know I can't use require "player" because require only allows a file to be loaded once but it doesn't need me to specify a file path. I tried using dofile() which actually did exactly what I wanted it to do, however, it does requires me to specify a full file path which I don't want to do.
So this is the part from main.lua:
local Player = require "player"
local Player2 = require "player"
-- local Player = dofile("/long/path/to/game/player.lua")
If I can't use require, is there a way to get the current file directory and use it like this:
local Player = dofile(filepath .. "player.lua")
You should approach this by changing create to a function which actually creates new instances of Player, instead of modifying the singleton object.
-- Player.lua
local Player = {}
function Player:create (x, y, sp)
self.__index = self
return setmetatable({
img = love.graphics.newImage('images/player.png'),
x = x,
y = y,
speed = sp
}, self)
end
return Player
Now you can use Player:create to create multiple instances.
-- main.lua
local Player = require 'Player'
local player1 = Player:create(10, 10, 5)
local player2 = Player:create(40, 40, 2)
Consider reading chapter 16 of Programming in Lua, which covers Object-Oriented Programming.
that loads the image serveral times... couldnt you just load an image once then call that image in a varable later like so:
-- Player.lua
local Player = {}
local img1 = love.graphics.newImage('images/player.png') <-- loaded one time
function Player:create (x, y, sp)
self.__index = self
return setmetatable({
img = img1,
x = x,
y = y,
speed = sp
}, self)
end
return Player
I just trying to add eventListener to a object, which should disappear when I tap on it. But I get error mentioned in the title. Here is my whole code at this point :
-- housekeeping stuff
display.setStatusBar(display.HiddenStatusBar)
local centerX = display.contentCenterX
local centerY = display.contentCenterY
-- set up forward references
local spawnEnemy
-- preload audio
-- create play screens
local function createPlayScreen()
local bg = display.newImage("background.png")
bg.y = 130
bg.x = 100
bg.alpha = 0
local planet = display.newImage("planet.png")
planet.x = centerX
planet.y = display.contentHeight +60
planet.alpha = 0
transition.to( bg, { time = 2000, alpha = 1, y = centerY, x = centerX } )
local function showTitle()
local gametitle = display.newImage("gametitle.png")
gametitle.alpha = 0
gametitle:scale (4, 4)
transition.to( gametitle, { time = 500, alpha = 1, xScale = 1, yScale = 1 })
spawnEnemy()
end
transition.to( planet, { time = 2000, alpha = 1, y = centerY, onComplete = showTitle } )
end
-- game functions
local function shipSmash(event)
local obj = event.target
display.remove( obj )
end
local function spawnEnemy()
local enemy = display.newImage("beetleship.png")
enemy.x = math.random(20, display.contentWidth - 20)
enemy.y = math.random(20, display.contentHeight - 20)
enemy:addEventListener ( "tap", shipSmash )
end
local function startGame()
end
local function planetDamage()
end
local function hitPlanet(obj)
end
createPlayScreen()
startGame()
And here is how error window looks like :
I'm kinda new in this area(LUA programming) so sorry for maybe dumb syntax error or something, but what I saw is that this error shows up after I write this line of code: enemy:addEventListener ( "tap", shipSmash )
Change local function spawnEnemy() to function spawnEnemy() as this variable was already declared earlier. Yes, this is typical Lua pitfall for beginners.
You've declared spawnEnemy as a local variable twice. That's allowed (the second one hides the first where ever the second one is in scope) but that's not what you wanted.
You have correctly declared a local variable and captured it in showTitle. To set that very same variable later, use an assignment statement without prefixing it with local. You can assign it a function definition using the "anonymous" function syntax:
spawnEnemy = function()
...
end
Actually, in Lua, all functions are anonymous since they are just values. But, for debugging, it is helpful to have a name associated with a function. In stack traces, the name of the variable used to call the function is used, where possible.