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- use crate::consts;
- use crate::components::*;
- use specs::world::Builder;
- use std::path::Path;
- #[derive(Debug, Copy, Clone)]
- enum DrawLayer {
- Background,
- Foreground,
- Decoration,
- }
- static DRAW_LAYERS: [DrawLayer;3] = [
- DrawLayer::Background,
- DrawLayer::Foreground,
- DrawLayer::Decoration,
- ];
- pub fn world_from_file<P: AsRef<Path>>(w: &mut specs::World, path: P) {
- let tiled::Map {
- layers,
- ..
- } = tiled::parse_file(path.as_ref()).unwrap();
- for (phase, layer) in DRAW_LAYERS.iter().zip(layers) {
- for (row, y) in layer.tiles.iter().zip(0..) {
- for (&n, x) in row.iter().zip(0..) {
- if n != 0 {
- let x = x as f32 * consts::TILE_SIZE;
- let y = y as f32 * consts::TILE_SIZE;
- let u = ((n - 1) % 32) as u8;
- let v = ((n - u as u32 - 1) / 32) as u8;
- let mut e = w.create_entity()
- .with(Position { x, y })
- .with(Sprite { u, v });
- e = match phase {
- DrawLayer::Background => e.with(Background),
- DrawLayer::Foreground => e.with(Foreground),
- DrawLayer::Decoration => e.with(Decoration),
- };
- e.build();
- }
- }
- }
- }
- // create the player
- w.create_entity()
- .with(Position {
- x: 3.0 * consts::TILE_SIZE,
- y: 3.0 * consts::TILE_SIZE,
- })
- .with(Sprite { u: 8, v: 0 })
- .with(Velocity { dx: 0.0, dy: 0.0 })
- .with(Foreground)
- .with(Controlled)
- .build();
- }
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