My first lua game! It is a port of duck hunt on the nes

(Im not even close to being done with this.)

Progress so far:

alpha v0.1
just the duck and background.

Controls
mouse to aim
click to shoot


Thanks
someone: program help

adriweb: helped me find an accident in code I made.

Tell me when its playable, because all I see is a duck flying down with incredibly low framerate, and thats on the PC, donget me started with the on calc bit

Hey annoyingcalc, here are some suggestions I have to make the code more legible & easier to modify that you might find useful:

-- IMAGES --
backSRC = ...
duckAliveSRC = ...
duckDeadSRC = ...
dogSRC = ...

img_dog = image.new(dogSRC)
img_duckAlive = image.new(duckAliveSRC)
img_duckDead = image.new(duckDeadSRC)
img_background = image.new(backSRC)

-- CONSTANTS --
duck = {
    h = image.height(img_duckAlive),    -- 30 px
    w = image.width(img_duckAlive)      -- 37 px
}
inc = 5        -- image movement increment
bg_gap = 50    -- background gap in coord X

function init()
    dx = 100
    dy = 50
    alive = 1
    x = 0
    y = 0
end

init()
function on.paint(gc)
    cursor.set("translation")
    cursor.show()

    -- Paint background
    gc:setColorRGB(0, 0, 0)
    gc:fillRect(0, 0, ww, wh)
   
    gc:drawImage(img_background, bg_gap, 0)
if alive==1 then
        gc:drawImage(img_duckAlive, dx, dy)
        gc:drawImage(img_duckAlive, dx, dy)
else
        if dy+duck.w <170 then
            gc:drawImage(img_duckDead, dx, dy)
        else
            gc:drawImage(img_dog, 150, 110)
        end
end
    AI()
end

function on.resize(width, height)
    ww = width
    wh = height
end

function on.mouseDown(x, y)
    if between(dx, x, dx+duck.w) and between(dy, y, dy+duck.h) then
        shot()
    else
        miss()
    end
end

function between(a, x, b)    -- Checks if "x" is between range [a,b]
    if a <= x and x <= b then
        return true
    else
        return false
    end
end

function AI()
    --place your Artificial Intelligence code here
if alive==1 then
if direction==1 then
dx = dx-inc
dy = dy-inc
        else
dx = dx+inc
dy = dy+inc
end
        if dx==bg_gap then
            direction=1
        end
        if dy >= wh then
            direction=0
        end
elseif dy+duck.w < 170 then
    dy = dy+inc
end
end

function shot()
    alive=0
end

function miss()
    -- Determine what happens if you missed a shot
end

function on.escapeKey()
    init()
    platform.window:invalidate()
end
I skipped the code with the image source since is to large & wasn't modified...
Here's what I did & why:

I see you made some comparisons with numbers 30 & 37, I assume this is the width & height of the image, that's why I set it to calculate it first & use them through a variable.

variable inc is the increment of how the duck moves. Is good to create a variable & change it at the top if you want it to modify later or in order to test different values.

bg_gap is the gap you left for the background. I don't know why 50, since 30 would be centered, so I leaved it there.

function init() was created in order to initialize everything, I used the key "esc" to call it. Useful to test everything from scratch w/o running or reopening the script. (if you want to use esc for something else, is easy to set it to any other key, though with a different function)

Created function "between" to make it easier to read when comparing where you shot (and renamed functioned used to a more informative one)


BTW, I see that you haven't checked the boundaries of the screen yet (and the way is currently determined is wrong). Maybe it would be better to determine where the duck is going to move next splitting the coordinates x & y.

Quote from: Augs on September 04, 2012, 06:12:42 pm

Tell me when its playable, because all I see is a duck flying down with incredibly low framerate, and thats on the PC, donget me started with the on calc bit

Well at least give him a chance to start in Nspire programming and be more respectful for new coders. You should maybe suggest him optimizing tricks like "Someone" did, especially considering so far you didn't contribute anything for the Nspire, unlike annoyingcalc, who is trying to.

I was just saying that he should not make a new "release" for every line of code he types. I'm all for the project. I can't be much help since I am also new to this.

I will have you know that I am currently developing a 2 player RPG.

I was just saying that he should not make a new "release" for every line of code he types.

What is the problem with this ? You don't have to download every release he makes. If he updates regularly, we know he didn't give up and we can easily follow his progress. And this allows people like Adriweb and Someone to help him on an updated code.

Sorry folks. I didn't mean to cause a stir.

Hm im trying to make all my sprites transparent but my browser freezes when I paste the sprite

Hm, I have a bunch of new code to add ( all coded during school )
but I need someone to make the sprites transparent and post the file here