Löve "Light vs. Shadow" Engine [0.4.3]

[Ranguna259]

Weird stuff right there. Glad you got it to work

[davisdude]

So I got it working, though I'm not exactly show why it works this way. Here's what I had to do to get it to work:

Code: Select all

	lightMouse.setPosition(p.x, p.y)
	mouseP = {love.mouse.getPosition()}
	angleMouse_toPlayer = math.atan2(mouseP[1] - p.x, mouseP[2] - p.y)
	lightMouse.setDirection(angleMouse_toPlayer + math.pi)

The problem is that you're using the x coordinates first in math.atan2, you should use the y coordinates as the first argument, i.e.:

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math.atan2(mouseP[2] - p.y, mouseP[1] - p.x)

[InsomniaNY]

So I got it working, though I'm not exactly show why it works this way. Here's what I had to do to get it to work:

Code: Select all

	lightMouse.setPosition(p.x, p.y)
	mouseP = {love.mouse.getPosition()}
	angleMouse_toPlayer = math.atan2(mouseP[1] - p.x, mouseP[2] - p.y)
	lightMouse.setDirection(angleMouse_toPlayer + math.pi)

The problem is that you're using the x coordinates first in math.atan2, you should use the y coordinates as the first argument, i.e.:

Code: Select all

math.atan2(mouseP[2] - p.y, mouseP[1] - p.x)

I think you misunderstood what I was saying. When I had math.atan2(y,x) it didn't work. When I switched it to math.atan2(x,y) because I figured I might as well try, it worked perfectly. I know it's supposed to be y,x....but for some reason it's working the opposite for me.

NOTE: I'm simply working with the light right now, I haven't implemented any shadow objects...though I don't think that matters.

I'll be inserting shadow objects shortly, but I had run into a speedbump... I'm importing a tmx file created in Tiled for my map, which I was hoping I could auto-generate shadowobjects from based on my "Walls" layer, but apparently that's not possible (or I just can't see documentation on how that would be done)...I tried creating a normal map png file, but it seems I'll have to create individual shadow objects for each platform/wall in my level.

[davisdude]

Ah. My bad. That's quite odd, though.

[FryDay444]

Will these shaders work on a mobile device (Love for Android or iOS)?

[jjmafiae]

Can I use this in a commercial project and what about credit?

[megalukes]

Sorry for bothering again, but did someone manage to solve the translate and scale issues? Thanks!

[nucular]

Is it possible to get the "light shine" drawn by drawShadow() and draw it on the screen in multiply mode (to allow the light rays to be blocked by the objects) without modifying the library? Actually I'm kinda confused by these functions... mind to elaborate a bit in the documentation?

[ThatMattGuy]

Hello!

I am new to Love2d and want to know how you use physics alongside of this? Would I need to have a physics world and a light world?

Thanks

[Guard13007]

I am new to Love2d and want to know how you use physics alongside of this? Would I need to have a physics world and a light world?

Yes. Good luck and don't give up!

(I'm relatively new too, and working with this engine as well (albeit the other one which is a rewrite).)