mirror of
https://github.com/tanema/light_world.lua.git
synced 2024-10-16 21:04:17 +00:00
55 lines
2.5 KiB
Markdown
55 lines
2.5 KiB
Markdown
# light_world.lua
|
|
|
|
This is the light modeling done by Priorblue [here](https://bitbucket.org/PriorBlue/love2d-light-and-shadow-engine),
|
|
only it has been largely refactored and edited to allow for scaling and proper translation.
|
|
|
|
## Installation
|
|
|
|
Copy and rename the lib folder into your project.
|
|
|
|
## How to use
|
|
|
|
```lua
|
|
local LightWorld = require "lib/light_world"
|
|
|
|
-- create light world
|
|
lightWorld = LightWorld({
|
|
drawBackground = drawBackground, --the callback to use for drawing the background
|
|
drawForground = drawForground, --the callback to use for drawing the foreground
|
|
ambient = {55,55,55}, --the general ambient light in the environment
|
|
})
|
|
|
|
function love.draw()
|
|
love.graphics.push()
|
|
love.graphics.translate(x, y)
|
|
love.graphics.scale(scale)
|
|
lightWorld:draw(x,y,scale)
|
|
love.graphics.pop()
|
|
end
|
|
```
|
|
|
|
For more information please check out the [wiki](https://github.com/tanema/light_world.lua/wiki) and see the examples directory to see how it is fully used. This project can be run with love to see the demonstrations in action.
|
|
|
|
## Features ##
|
|
* **[Preview (Video)](https://www.youtube.com/watch?v=6V5Dtsa6Nd4)**
|
|
* polygon shadow calculation [Preview](http://onepixelahead.de/love2d_polyshadow.png)
|
|
* circle shadow calculation
|
|
* image shadow calculation [Preview](http://onepixelahead.de/love2d_polyshadow18.png)
|
|
* shadow blur
|
|
* light color, range, smooth and glow [Preview](http://onepixelahead.de/love2d_polyshadow2.png)
|
|
* ambient light
|
|
* self shadowing on images with normal maps [Preview](http://onepixelahead.de/love2d_polyshadow_pixelshadow.png)
|
|
* dynamic glow effect on images and circle/poly objects [Preview](http://onepixelahead.de/love2d_polyshadow_glow.png) [Preview](http://onepixelahead.de/love2d_polyshadow15.gif)
|
|
* generate flat or gradient normal maps [Preview](http://onepixelahead.de/love2d_polyshadow7.png)
|
|
* convert height maps to normal maps [Preview](http://onepixelahead.de/love2d_polyshadow8.png)
|
|
* generate a normal map directly from the image (usually gives poor results)
|
|
* shadow color and alpha (glass) [Preview](http://onepixelahead.de/love2d_polyshadow9.png)
|
|
* directional light [Preview](http://onepixelahead.de/love2d_polyshadow12.png)
|
|
* refractions (moveable) [Preview](http://onepixelahead.de/love2d_polyshadow13.gif)
|
|
* chromatic aberration [Preview](http://onepixelahead.de/love2d_polyshadow16.gif)
|
|
* postshader with many included postshaders, plus easy to extend
|
|
|
|
## License
|
|
|
|
A License has been included in this project
|