34 lines
2.4 KiB
Markdown
34 lines
2.4 KiB
Markdown
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# Random Brush
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This Brush places random Tiles onto a Tilemap by selecting from defined **Tile Sets** while painting onto the the Tilemap. Use this as an example to create custom Brushes which store specific data per Brush, and to make Brushes with randomized painting behavior.
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## Properties
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| Property | Function |
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| ----------------------- | ------------------------------------------------------------ |
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| __Pick Random Tiles__ | Enable this property to pick the Tiles from the current selection as a random Tile Set. |
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| __Add To Random Tiles__ | Enable this property to add the picked Tile Sets to existing Tile Sets instead of replacing them. |
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| __Tile Set Size__ | Set the size of the Tile Set that is painted by this Brush. |
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| __Number of Tiles__ | The number of Tile Sets. |
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| __Tile Set__ | The Tile Set to randomize from |
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| __Tiles__ | The Tiles in the Tile Set. |
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## Usage
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To create a **Tile Set**, first define the size of the Tile Set you want to paint by setting its size values in the **Tile Set Size** property. Then you can add Tile Sets manually with the Brush Editor or select them from an existing Tile Palette.
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To select Tile Sets from an existing [Tile Palette](https://docs.unity3d.com/Manual/Tilemap-Palette.html), enable the __Pick Random Tiles__ property and select the Tile Sets using the [Picker Tool](https://docs.unity3d.com/Manual/Tilemap-Painting.html#Picker). This will create a Tile Set, or multiple Sets if the picked size is larger than the size set in the **Tile Set Size** property. Enable the __Add To Random Tiles__ property to add a picked selection of Tiles onto new or existing Tile Sets instead of replacing them.
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</br> In this example, 3 Tile Sets of 1x2 are created.
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When painting with the Random Brush, the Random Brush will randomly pick from the available Tile Sets while painting the Tiles.
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## Implementation
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The Random Brush inherits from the Grid Brush and implements the following overrides:
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- It overrides the Paint method to paint random selections of Tiles from chosen Tile Sets.
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- It overrides the Pick method to be able to pick selections of Tiles for the random Tile Sets.
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