When I first started using Unity, I found it challenging to create terrains in a 3D environment. I wanted a tool that would make terrain generation simple and intuitive. This led me to develop this asset, enabling anyone to easily create beautiful landscapes.

Simple Procedural Map Generator is a Perlin Noise-based procedural terrain and tile generator designed as a Unity Editor extension. It allows users to manually draw key areas of the map, while the rest of the terrain is automatically generated using procedural techniques.

Key Features:

• Drawing-based Tile Placement – Define essential terrain features by directly painting on the grid.

• Procedural Terrain Generation – Automatically fills in the map based on user-defined tiles and Perlin Noise.

• Terrain & Cube Mode Support – Choose between Unity’s Terrain system for natural landscapes or a grid-based tile approach.

• Highly Customizable – Utilize TileTypeData to apply different properties to tiles.

• Real-time Editor Preview – Instantly visualize and tweak terrain generation within the Unity Editor.

• Procedural Prefab Brush – Automatically place objects and details for richer environments.

This tool is perfect for open-world games, sandbox environments, and strategy games, offering a balance between manual control and procedural automation.

Detailed Options:

1) Map Generator Settings

• Width, Height – Set the size of the terrain to be generated.

• Map Mode – Select between Terrain and Tile modes.

2) Tile Type Container - A container that holds information about tile types.

• Includes Terrain Layer

• Default terrain height settings

• Weight settings – Determines the influence of different tile types within the container.

• Prefab Settings:

• Is Using Prefab – Toggle whether to use prefabs for this tile type.

• Tile Prefab – Assign the prefab to be used for this tile.

• Prefab Base Size – Used to properly map larger meshes if they exceed 1x1x1 in size.

• Is Groupable – Allows prefabs to merge into larger groups if placed adjacent to each other.

• Prefab Base Height – Adjusts the base height of prefabs to align correctly with the terrain.

3) Draw Map

• Draw Map Size – Adjusts the size of the drawing canvas.

• Clear Painted Map – Clears the drawn map.

• Selected Draw Tile – Choose the tile type to draw. (Click the tile preview above to select it directly.)

• Canvas (Drawing Area):

• Left Mouse Click – Paint the selected tile.

• Right Mouse Click – Erase the tile.

4) Perlin Noise Generator Settings

• Random Seed – Generate a new random seed.

• Seed – Manually set a fixed seed for map generation.

5) Terrain Texture Painter Settings

• Blend Radius – Defines how smoothly terrain layers blend (higher values result in more mixing).

• Edge Blend Factor – Applies global noise to the entire map (higher values increase randomness).

6) Tile Placer Settings

• Center Weight – Adjusts the weight of the center tile when blending heights.

• Is Flat Height – Debug feature to remove height variations.

• Slope Range – Defines the tile range for height blending.

• Height Random Scale – Adds random variations to height values.

7) Procedural Prefab Brush Container

• Name Settings – Assign a name to the container.

• Placement System – Choose the placement method:

1. INSTANTIATE – Generates objects as GameObjects.

2. TREE – Uses Unity’s terrain tree system (for trees).

3. DETAIL – Uses Unity’s terrain detail system (for grass and small decorations).

• Density – Adjust the placement density.

• Object Spacing X, Y – Set the minimum spacing between objects.

• Allowed Tiles – Define which tile types allow the placement of this prefab.

• Prefabs – List of prefabs to be randomly selected for placement.

• Placement System – DETAIL (Grass, Flowers) Only

• Textures – Assign texture images for the Unity terrain detail system.

• Placement System – INSTANTIATE Only

• Use Slope – Applies terrain slope to placed objects.