Early LÖVE code snippets? For learning?

[tentus]

Aaah! Thank you guys so much! This is more helpful than you can imagine. So much of the code out there is like 100 steps above what I can comprehend at this level.

Anyway, I made something. This is my first ever programmed thing I've ever made so it's very simple. But I'm happy with it.

Here's something you might find useful: an function that checks if two rectangles are overlapping. Or, more correctly, it tests if they're not overlapping and then returns the opposite. Just give it the coords and dimensions of the first rectangle, and then the coords and dimensions of the second.

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function overlap(x1,y1,w1,h1, x2,y2,w2,h2)
	return not (x1+w1 < x2 or x2+w2 < x1 or y1+h1 < y2 or y2+h2 < y1)
end

[Robin]

Hot damn! Pretty good for a first one.

You could make escape quit the game by adding this function at the bottom of your main.lua:

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function love.keypressed(key)
    if key == 'escape' then
        love.even.push 'q'
    end
end

[heartmonster]

Here's something you might find useful: an function that checks if two rectangles are overlapping. Or, more correctly, it tests if they're not overlapping and then returns the opposite. Just give it the coords and dimensions of the first rectangle, and then the coords and dimensions of the second.

Awesome! Thanks, I will def be using that.

You could make escape quit the game by adding this function at the bottom of your main.lua:

That too.

Oh, also I have a question, if anyone is still paying attention to this thread--

If I want the player to be able to drag and drop an object (a shape or image or whatev.), what is the best way to do that? I mean I know theoretically one could do this:

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if love.mouse.getX() > thing.x 
and love.mouse.getX() < thing.x+thing.width 
and love.mouse.getY() > thing.y 
and love.mouse.getY() < thing.y+thing.height 
and love.mouse.isDown("l") then
...
end

BUT first of all that is like the most cumbersome thing ever. And second it only half works--in that if you move the mouse too quickly you lose the item you're trying to drag.

I'm sure there must be an easier and less failing way to do this! Thank you!!!

[Rad3k]

If I want the player to be able to drag and drop an object (a shape or image or whatev.), what is the best way to do that?

You can use love.mousepressed - inside the callback you check if the pointer is over any object, and if it is, assign this object to some variable (let's say, "grabbed"). Then, until the mouse is released (use love.mousereleased or check with love.mouse.isDown each frame), you just keep moving the "grabbed" object to where the pointer is. When you detect that mouse button is released, just unset the "grabbed" variable. I don't know if it's the best way, but it's simple and works well.

[BlackBulletIV]

I was going to post a reply to your question, but I thought I'd turn it into a tutorial: http://nova-fusion.com/2011/09/06/mouse ... in-love2d/

[miko]

Can people who know what they're doing with LÖVE (you forum regulars!) please post some of their early code examples? Like if you coded a basic Snake or Space Invaders clone, for example. If you could just throw the code down, that would be amazing, and REALLY REALLY helpful to me and probably other beginners like me.

Thanks so much! Look forward to seeing your stuff.

Great idea! Here is (one of) my first tries. It was never finished, but at least is somewhat playable

[heartmonster]

I was going to post a reply to your question, but I thought I'd turn it into a tutorial: http://nova-fusion.com/2011/09/06/mouse ... in-love2d/

Amazing! This forum is the best. Thanks so much, and I posted a question about that in your topic about it so... Yes. No need for redundancy here.

Great idea! Here is (one of) my first tries. It was never finished, but at least is somewhat playable

Thanks! And yeah I will be looking at your code, the program looks appropriately simple-but-with-excellent-things-happening-in-it. Which is apparently a new term I just invented.

[miko]

Thanks so much! Look forward to seeing your stuff.

I have just written another game for you - search for Minefield in http://love2d.org/forums/viewtopic.php?f=5&t=3605