Building a 2D Tiled Engine in Unity

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Building a 2D Tile Engine in Unity by Michael C. Neel @vinull / vinull.com

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What is this talk?

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Unity 4.5 – A New Hope …Lost

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What is a 2D Tile Engine?

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What is a 2D Tile Engine?

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What is a 2D Tile Engine?

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Background

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Tiled and XTiled

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Unity Options Few free and Open Source Only basic support Limited map size

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UTiled Project Goals All Features of Tiled No Size Limit Modifiable (destructible environments) “The Unity Way”

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The Unity Way Prefabs for Layers Scriptable Objects Unity 4.3 – Sprites and Spritesheets Colliders from Polygons Editor UI

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What a mesh! Sprite object have high overhead “Pixel Perfect” Physics issues better in 4.5, but still some remain No Zlib or Gzip compression support in Unity’s Mono Cannot access source image before import processor

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M*E*S*H Geometry is painless

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M*E*S*H Geometry is painless

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1 (0,0,0) 3 (1,1,0) 4 (0,1,0) 2 (1,0,0) V[] = (0,0,0), (1,0,0), (1,1,0), (0,1,0) M*E*S*H Geometry is painless

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1 3 4 2 1 2 1 = 1, 3, 4 2 = 1, 2, 3 T[] = 1, 3, 4, 1, 2, 3 M*E*S*H Geometry is painless

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1 3 4 2 M*E*S*H Geometry is painless (0,0) (1,1) (0,1) (1,0) 0.167 UV[] = (0, 0), (0, 0.125), (0.167, 0.125), (0.167, 0)

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M*E*S*H Geometry is painless 3 8 10 13 3

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Demos! 1. Draw a circle 2.Draw the rest of the owl

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The Technology Cooperative techco.org speakerdeck.com/vinull [email protected] vinull.com @ViNull