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#37 2D Platformer Lighting

Dynamic point lights for 2D scenes

Dynamic 2D lighting transforms flat game scenes into atmospheric environments. Each point light has position, color, radius, and intensity. Brightness at any pixel uses inverse-distance falloff with smoothstep for clean fade-out. Multiple lights combine through additive blending, creating bright intersections where they overlap. One light follows the mouse, simulating a player-carried torch.

Key Concepts

point light falloff
additive blending
ambient light
interactive mouse light

Try this shader live in the Shader Sandbox editor with real-time preview.

Open in Sandbox

Source Code

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All Tutorials

1 Hello World 2 UV Coordinates 3 Animation 4 Shapes: Circle 5 Shapes: Rectangles 6 Patterns & Tiling 7 Smooth Functions 8 Noise 9 2D Lighting 10 Intro to Raymarching 11 Rotation & Transforms 12 Color Spaces 13 Polar Coordinates 14 Domain Repetition 15 Smooth Blending (SDF) 16 Voronoi Noise 17 Glow & Bloom 18 Morphing Shapes 19 Texture Sampling 20 Post Processing 21 Domain Warping 22 Reflections 23 Soft Shadows 24 Fog & Atmosphere 25 Mandelbrot Fractal 26 Julia Set 27 Water & Waves 28 Fire & Smoke 29 3D Domain Repetition 30 FBM Terrain 31 Health Bar 32 Dissolve Effect 33 Sprite Outline 34 Shockwave Distortion 35 Force Field Shield 36 Retro CRT Effect 37 2D Platformer Lighting 38 Parallax Scrolling 39 Portal Vortex 40 Pixel Art Dithering