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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 27 year old kid with adult powers. 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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