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2014 - 4 - 16 / 4:58 pm / general

Dev Log: Quick Lighting Test

Dev Log: Quick Lighting Test

As a quick experiment I wanted to see how Otter would be equipped to handle a simple lighting set up. The basic set up is just a big render texture that is filled with a dark color with a blend mode set to multiply. Then light is rendered to the render texture with a blend mode of additive. The result is a layer of shadow that can have light rendered to it.

Image

The code for this set up right now is pretty straight forward as well. I'm using a black and white image for the light. Just a black rectangle with a white radial gradient in the center.

Here's some sample code to show how this effect is achieved with Otter!

//set up the surface
public Surface SurfaceLighting = new Surface(Game.Instance.Width, Game.Instance.Height, new Color("379")) {
Blend = BlendMode.Multiply
};

//set up the light
public Image ImageLight = new Image(Assets.ImageLight1) {
Blend = BlendMode.Add
};

//add the surface to an entity to render it
//this happens in an object's initialization
AddGraphicGUI(SurfaceLighting);

//render light to the surface
//this happens in a Render() function
Draw.SetTarget(SurfaceLighting);
ImageLight.Color = Color.White;
Draw.Graphic(ImageLight, Input.MouseX, Input.MouseY);
ImageLight.Color = Color.Red;
Draw.Graphic(ImageLight, Input.MouseX + 500, Input.MouseY);
ImageLight.Color = Color.Blue;
Draw.Graphic(ImageLight, Input.MouseX - 500, Input.MouseY);
Draw.ResetTarget();

4 Comments
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2014 - 4 - 17 12:29 PM

TodesBrot

Did you cut parts of the code? Because it seems really odd to me that a function contains public fields.

Avatar

2014 - 4 - 17 1:30 PM

Kyle

Yes, hence the comments.

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2014 - 4 - 17 2:59 PM

TodesBrot

...goddammit I overlooked that

Avatar

2014 - 4 - 18 7:39 PM

Kyle

;D

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Hi there, my name is Kyle, and I'm a kid disguised as a grown up. I'm making video games and living the indie game developer life in Tempe, Arizona. Here you will find my thoughts, games, websites, doodles, and other stuff like that. I worked on Snapshot, Offspring Fling, and a whole bunch of other games. I also created and maintain Otter, a 2d game making framework. If you want to get a hold of me use the form on the bottom of the page, leave a comment, or just tweet at me. I try to post three times a week. Thanks for stoppin' by! You're the coolest.

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