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use ggez::filesystem::File;
use ggez::graphics::spritebatch::SpriteBatch;
use ggez::nalgebra::Point2;
use std::collections::HashMap;
use xml::reader::XmlEvent::Characters;
use crate::constants;
use crate::entity::Operable;
use crate::layer::Layer;
use crate::tile::Tile;
use crate::tileset::Tileset;
use crate::xmlelements::XMLElements;
#[derive(Clone)]
pub struct Map {
dimensions: (usize, usize),
layers: Vec<Layer>,
spawns: Vec<(String, Point2<f32>)>,
}
impl Operable for Map {
fn draw(&self, spritebatch: &mut SpriteBatch) {
for layer in self.layers.iter() {
layer.draw(spritebatch);
}
}
fn update(&mut self) {
for layer in self.layers.iter_mut() {
layer.update();
}
}
}
impl Map {
pub fn new(file: File, tileset: &Tileset) -> Map {
let elements = XMLElements::new(file);
let dimensions = (
elements
.get_element_attribute("map", "width")
.unwrap()
.parse()
.unwrap(),
elements
.get_element_attribute("map", "height")
.unwrap()
.parse()
.unwrap(),
);
let layers: Vec<Layer> = elements
.events
.iter()
.filter_map(|e| {
if let Characters(text) = e {
Some(Layer::new(text, tileset, dimensions))
} else {
None
}
})
.collect();
let spawns = Map::find_spawn_points(&layers, tileset.get_spawn_tiles());
Map {
layers,
dimensions,
spawns,
}
}
fn find_spawn_points(
layers: &[Layer],
spawn_tiles: HashMap<usize, Tile>,
) -> Vec<(String, Point2<f32>)> {
let mut spawn_points = Vec::new();
for layer in layers.iter() {
for cell in layer.cells.iter() {
for (id, tile) in spawn_tiles.iter() {
if id == &cell.id {
spawn_points
.push((tile.properties.spawn.clone().unwrap(), cell.destination));
}
}
}
}
spawn_points
}
pub fn get_spawn_points(&self, name: &str) -> Vec<Point2<f32>> {
self.spawns
.clone()
.into_iter()
.filter(|s| s.0 == name)
.map(|s| s.1)
.collect()
}
pub fn get_dimensions(&self) -> (f32, f32) {
(
(constants::TILE_WIDTH * constants::TILE_SCALE) * self.dimensions.0 as f32,
(constants::TILE_HEIGHT * constants::TILE_SCALE) * self.dimensions.1 as f32,
)
}
}
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