tiled_json is here to help you load Tiled maps!
The primary idea of this library is getting the data loaded into a more manageable format. This data is not optimized toward any specific use case and as such should be used only as an intermediate format before transferring into more useful structures. This library exists soley to facilitate the loading of Tiled maps and is designed to be read-only. The data structures within have no extended functionality or any inherent purpose other than reading data stored in Tiled JSON maps.
This library supports loading compressed and base64 encoded maps.
This library does NOT support loading wangsets, chunks, terrains, infinite maps, or external object templates. This means when you export a map to JSON, you must be sure to
- Embed Tilesets, and
- Detach Templates, and
- Resolve Object Types and Properties (optional).
Every field of every struct is public. In order to get data, you
may access the fields directly or use the methods by the same name.
Each variable is named according to its Tiled JSON representation.
Numerous convenient functions are available for accessing data that may be
otherwise difficult or verbose to access.
All enums can be converted into string slices if you need them via the to_string() method from implementing Display.
This is what the data tree looks like:
Map
Layers
Tile Layers
Data (gids corresponding to some tileset)
Object Groups
Objects
Image Layers (images directly on map)
Groups (groups of layers)
Tilesets
Tiles
Animations
Collisions
tiled_json::load_map(file: &str) is the one and only entry point into
this library.
Typically, we want to load the map, we'll capture it to a variable. Then we might loop through all of the tilesets and translate them to our own structures and then do the same for our layers. Here is what some code may look like:
let map = tiled_json::load_map("map1.json").unwrap();
let height = map.height();
let width = map.width();
// CREATE INTERNAL MAP STRUCTURE HERE, THEN
for ls in map.layers().iter() {
let layer_darkness = ls.get_property("darkness").get_float();
let layer_weather = ls.get_property("weather").get_string();
if ls.is_tile_layer() {
let data = ls.get_data().unwrap();
for n in data.iter() {
let flip_bits = tiled_json::gid_flipped_hvd( *n );
let gid = tiled_json::gid_without_flags( *n );
let ts = map.tileset_by_gid( gid ).unwrap();
let coords = ts.coord_by_gid(gid);
if let Option::Some(tile) = ts.tile_by_gid( gid ) {
// these are specific overrides of the tileset for a specific tile
// these can be accessed from the tileset for easy access later.
let anim_coords = tile.get_anim( MSECS_SINCE_WORLD_CREATION ).unwrap(); // this may not exist
let collision = tile.objectgroup().unwrap(); // this may not exist
let properties = tile.get_property_vector();
// do stuff!
}
// check if an existing instance exists of this and if not, create
// a new instance for reference later.
// Add value to our map.
}
} else if ls.is_object_group() {
let objs = ls.get_objects_vector().unwrap();
let dro = ls.get_draworder().unwrap();
// See object properties to know what is relevant to you.
} else if ls.is_image_layer() {
let img = ls.get_image().unwrap();
let tsc = ls.get_transparentcolor().unwrap(); // this can actually be None so use with caution.
// Determine what to do with the image.
} else if ls.is_group() {
let grp = ls.get_group().unwrap();
// If you have groups in your map, then you know what to do with them.
}
}
for ts in map.tilesets().iter() {
/* load stuff here
store textures
organize your internal data
*/
}