mirror of
https://github.com/Ellpeck/MLEM.git
synced 2024-11-05 06:49:09 +01:00
37 lines
2.1 KiB
Markdown
37 lines
2.1 KiB
Markdown
|
If you're using [MonoGame.Extended](https://github.com/craftworkgames/MonoGame.Extended)'s [Tiled](https://www.mapeditor.org/) map editor support, you can use the **MLEM.Extended** package alongside that to enhance your tilemap experience.
|
||
|
|
|
||
|
|
# Extensions
|
||
|
|
There are several extensions to tiled maps, tilesets and tiles, including, but not limited to:
|
||
|
|
- The ability to get a tileset tile from a tile easily
|
||
|
|
- The ability to get tile and tile map properties easily
|
||
|
|
- Getting multiple tiles and objects at a location or in an area
|
||
|
|
|
||
|
|
All of these extension methods can be found in the [TiledExtensions](https://github.com/Ellpeck/MLEM/blob/master/MLEM.Extended/Tiled/TiledExtensions.cs) class.
|
||
|
|
|
||
|
|
# Tiled map collisions
|
||
|
|
MLEM.Extended includes a very easy way to set up collisions within your tiled maps through the use of [tile collisions](https://doc.mapeditor.org/en/stable/manual/editing-tilesets/#tile-collision-editor).
|
||
|
|
|
||
|
|
To get this set up, you simply have to add bounding rectangles to your tilesets within the Tiled editor. Then, you can query collisions like so:
|
||
|
|
```cs
|
||
|
|
// Creating the collision system for a tiled map
|
||
|
|
var collisions = new TiledMapCollisions(myMap);
|
||
|
|
|
||
|
|
// Getting a list of collisions for an area
|
||
|
|
var tiles = collisions.GetCollidingTiles(new RectangleF(2, 2, 3.5F, 3.5F));
|
||
|
|
|
||
|
|
// Checking if an area is colliding
|
||
|
|
var colliding = collisions.IsColliding(new RectangleF(4, 4, 1, 1));
|
||
|
|
```
|
||
|
|
|
||
|
|
## Collision coordinate system
|
||
|
|
The coordinate system of these tiled collisions functions based on *percentages* rather than absolute pixel coordinates. The collision system sees each tile as being *one unit by one unit* big.
|
||
|
|
|
||
|
|
This means that, to check if the tile at tile coordinate `6, 10` contains any collisions, the following rectangle has to be used:
|
||
|
|
```cs
|
||
|
|
var tiles = collisions.GetCollidingTiles(new RectangleF(6, 10, 1, 1));
|
||
|
|
```
|
||
|
|
If the tile at that location is `16x16` pixels big and it has a single collision box at pixels `4, 4` that is `8x8` pixels big, then the following code prints out its percentaged coordinates: `X: 0.25, Y: 0.25, Width: 0.5, Height: 0.5`.
|
||
|
|
```cs
|
||
|
|
foreach (var tile in tiles)
|
||
|
|
Console.WriteLine(tile.Collisions[0]);
|
||
|
|
```
|