Homebrew [Release] - LövePotion - LÖVE API for 3DS Homebrew - BETA

[haazet]

Oh your right, ive been testing on Citra and cannot move. But just threw on my n3ds moves just fine. Maybe I not pressing the correct key in Citra. Anyone know the Keyboard Bindings? Thanks for responding

Spoiler: Cleaned up a bit

-- LövePotion example/no game screen

-- love.load() is called once when a LövePotion game is ran.
function love.load()

-- Enables 3D mode.
love.graphics.set3D(true)

-- Seeds the random number generator with the time (Actually makes it random)
math.randomseed(os.time())

-- Sets the current screen for draw calls to draw to.
-- Lasts until it is called again.
love.graphics.setScreen('top')

logo = {} -- Creates a table to hold variables for the logo (x, y, image etc.)

-- Sets the logo position to the center of the screen, using love.graphics.getWidth()/getHeight()
-- and Image:getWidth()/getHeight()
logo.x = 200
logo.y = 120

--Me adding Speed
logo.speed = 10


potionText = {} -- Creates a table to hold variables for the text

font = love.graphics.newFont() -- Creates a new font, when no arguments are given it uses the default font

-- Loads images from filepaths
logo.image = love.graphics.newImage('rightskim.png')
background = love.graphics.newImage('BeachWave.png')

inspector = love.graphics.newImage('bottommenu.png')
message = love.graphics.newImage('nogame.png')
messagebg = love.graphics.newImage('bubble.png')



-- Sets the texts position, by setting variables in the potionText table
potionText.x = 50
potionText.y = 75

-- Load the beep sound from a .raw file to play on exit
exitSound = love.audio.newSource('beep.wav')

-- Sets the background color to a nice blue
love.graphics.setBackgroundColor(88, 186, 255)



end

-- love.update(dt) is called every frame, and is used for game logic.
-- The dt argument is delta-time, the average time between frames.
-- Use this to make your game framerate independent.
function love.update(dt)

if love.keyboard.isDown("left") then
logo.x = logo.x - logo.speed*dt
elseif love.keyboard.isDown("right") then
logo.x = logo.x + logo.speed*dt
end


end

-- love.draw() is called every frame. Any and all draw code goes here. (images, shapes, text etc.)
function love.draw()

-- Start drawing to the top screen
love.graphics.setScreen('top')

-- Reset the current draw color to white
love.graphics.setColor(255, 255, 255)

-- Draw the background image
love.graphics.draw(background, 0, 0)


-- Draws the framerate
love.graphics.setColor(255, 255, 255)
love.graphics.rectangle('fill', 10, 15, font:getWidth('FPS: ' .. love.timer.getFPS()) + 10, font:getHeight() + 3)
love.graphics.setColor(35, 31, 32)
love.graphics.setFont(font)
love.graphics.print('FPS: ' .. love.timer.getFPS(), 15, 15)

love.graphics.setColor(255, 255, 255)

-- Draw Player
love.graphics.draw(logo.image, logo.x, logo.y)

-- Start drawing to the bottom screen
love.graphics.setScreen('bottom')

-- Draw the baby inspector with the no-game text
love.graphics.draw(inspector, 0, 0)
love.graphics.draw(messagebg, 160, 0)
love.graphics.draw(message, 185, 10)

end




-- love.keypressed is called when any button is pressed.
-- The argument key is the key that was pressed.
-- Not all input code goes here, if you want to check if a button is down then
-- use love.update(dt) along with love.keyboard.isDown().
function love.keypressed(key)

-- If the start button is pressed, we return to the Homebrew Launcher
if key == 'start' then
love.event.quit()
end

end

-- love.quit is called when LövePotion is quitting.
-- You can put all your cleanup code and the likes here.
function love.quit()

-- Plays the exit beep sound.
exitSoundlay()

end

 

[VideahGams]

Oh your right, ive been testing on Citra and cannot move. But just threw on my n3ds moves just fine. Maybe I not pressing the correct key in Citra. Anyone know the Keyboard Bindings? Thanks for responding

Here are the default Citra keybindings

 

[haazet]

Strange I cannot move, using the dpad or Joypad bindings, did you run it on a 3ds?

 

[VideahGams]

Strange I cannot move, using the dpad or Joypad bindings, did you run it on a 3ds?

I used Citra, I don't have my 3DS on hand at the moment

 

[Jack_Sparrow]

@VideahGams Is it possible to use physics? I'm trying to make an object so that when the main character touches it he dies.

 

[haazet]

I solved my problem, I must check "Use HardwareRenderer" to get input for some reason. May help someone else

 

[VideahGams]

@VideahGams Is it possible to use physics? I'm trying to make an object so that when the main character touches it he dies.

Physics aren't required for this, you can just check if the two objects are touching each other like this:

local box1 = {x = 15, y = 15, width = 10, height = 10}
local box2 = {x = 0, y = 0, width = 20, height = 20}

-- The overlap function.
local function overlap(x1, y1, w1, h1, x2, y2, w2, h2)
   return x1 < x2 + w2 and
     y1 < y2 + h2 and
     x2 < x1 + w1 and
     y2 < y1 + h1
end

if overlap(box1.x, box1.y, box1.width, box1.height, box2.x, box2.y, box2.width, box2.height) then

   -- Both of the boxes are overlapping, so the function `overlap` returns true.
   -- When they aren't overlapping (say box2's width and height were set to 5)
   -- then it would return false.

   -- Do your stuff here.

end

However, if you think this is too messy there are libs to make it easier (although a bit overkill) such as bump.lua or HardonCollider.

 

[haazet]

Im having trouble to get the blank touchscreen control my player that is on the upper screen. Im trying to find some examples but having cant seem to see it. I think have mouse movement down if he was on the lower screen

love.update

Spoiler: .update

--Still Updating Mouse Movement
if love.mouse.isDown then --Check every frame if left mouse button is down
local mousex, mousey = love.mouse.getPosition() --Get mousex and mousey because it's not given to us
player.move_to(mousex, mousey)
end

This is the player.moveto function that i use on my player = {}

Spoiler: player.moveto

function player.move_to(_x, _y)
dx = _x - player.x
dy = _y - player.y
length = math.sqrt(dx*dx+dy*dy);

dx = (dx/length)
dy = (dy/length)

player.x = (player.x + dx * player.speed)
player.y = (player.y + dy * player.speed)
end

 

[VideahGams]

Im having trouble to get the blank touchscreen control my player that is on the upper screen. Im trying to find some examples but having cant seem to see it. I think have mouse movement down if he was on the lower screen

love.update

Spoiler: .update

--Still Updating Mouse Movement
if love.mouse.isDown then --Check every frame if left mouse button is down
local mousex, mousey = love.mouse.getPosition() --Get mousex and mousey because it's not given to us
player.move_to(mousex, mousey)
end

This is the player.moveto function that i use on my player = {}

Spoiler: player.moveto

function player.move_to(_x, _y)
dx = _x - player.x
dy = _y - player.y
length = math.sqrt(dx*dx+dy*dy);

dx = (dx/length)
dy = (dy/length)

player.x = (player.x + dx * player.speed)
player.y = (player.y + dy * player.speed)
end

love.mouse.isDown is a function not a variable, so your touch code should look like this:

if love.mouse.isDown('l') then --Check every frame if left mouse button is down
   local mousex, mousey = love.mouse.getPosition() --Get mousex and mousey because it's not given to us
   player.move_to(mousex, mousey)
end

 

[haazet]

ah thanks agian, really learning a lot here. Moved the code from update to draw section and is working now) Although quite rough haha

Edit: dropped my player speed from 100 to 10 and is smooth.

 

[haazet]

Ive got my Scrolling background running in Citra but on a real 3ds is just blank? Edit: I had speed defined too for bg1

Spoiler: Scrolling

--Scrolling
windowx = love.graphics.getWidth()

bg1 = {}
bg1.img = love.graphics.newImage("back1.png")
bg1.x = 0
bg1.width = bg1.img:getWidth()

speed = 30

function love.draw(dt)
love.graphics.draw(bg1.img, bg1.x, 0)

function love.update(dt)


--BG Scrolling
bg1.x = bg1.x - speed * dt

 

[nMM456]

What would a code look like to have Hello World! appear on the top screen?

 

[VideahGams]

What would a code look like to have Hello World! appear on the top screen?

function love.draw()
   love.graphics.print("Hello World!", 50, 50)
end

function love.keypressed(key)
   if key == 'start' then love.event.quit() end -- Allow us to quit back to the launcher.
end

 

[TurtleP]

Here's my Löve 0.10.0 3DS compatibility library to make it "emulate" 3DS. It doesn't do 3D. Just change the extension from .txt to .lua and require it. There's also a keyboard configuration table to set certain keys as buttons to a 3DS.

EDIT: Fixed a minor bug
EDIT 2: Fixed another thing (though you just need _EMULATEHOMEBREW set to true in the old version)

 

[Substance12]

I need to stop playing a sound, but i've tried with love.audio.stop and with nameofsound:stop and nothing seems to work, it keeps on playing.

What can I do?

 

[VideahGams]

I need to stop playing a sound, but i've tried with love.audio.stop and with nameofsound:stop and nothing seems to work, it keeps on playing.

What can I do?

Can you send your game so I can see what's up?

 

[Substance12]

Can you send your game so I can see what's up?

Uh, it's pretty big. Let me try if it's a thing of how the code is called first.

 

[Tobold]

Ooooh! I'm excited about this!

Two questions:

What values does the setDepth accept? I take it, the higher the value the "deeper" it is "in the screen"?

Any chance of getting ogg or mp3 support?

 

[Substance12]

What values does the setDepth accept? I take it, the higher the value the "deeper" it is "in the screen"?

A positive value will make it go "inside" the screen, a negative value will make it go "outside".

 

[Tobold]

A positive value will make it go "inside" the screen, a negative value will make it go "outside".

Are there no minimal or maximal values?