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use bevy::prelude::{Component, Resource};
use ldtk_rust::EntityInstance;
use num_traits::AsPrimitive;
use serde::de::DeserializeOwned;
use serde::Serialize;
use crate::get_ldtk_tile_scale;
pub trait SerdeClone {
fn serde_clone(&self) -> Self;
}
impl<T> SerdeClone for T
where
T: Serialize + DeserializeOwned,
{
fn serde_clone(&self) -> Self {
serde_json::from_value(serde_json::to_value(&self).unwrap()).unwrap()
}
}
pub fn px_to_grid<T: AsPrimitive<i64>>(t: T) -> i64 {
t.as_() / (get_ldtk_tile_scale() as i64)
}
pub fn grid_to_px<T: AsPrimitive<f32>>(t: T) -> f32 {
t.as_() * get_ldtk_tile_scale()
}
pub fn entity_to_worldspace(level_height: i64, entity: &EntityInstance) -> (f32, f32) {
let centre_align_pixel_x = grid_to_px(entity.grid[0]) - (get_ldtk_tile_scale() / 2.0);
let centre_align_pixel_y = grid_to_px(entity.grid[1]) - (get_ldtk_tile_scale() / 2.0);
let inverted_pixel_y = level_height as f32 - centre_align_pixel_y - get_ldtk_tile_scale();
let box_aligned_x = centre_align_pixel_x + (entity.width / 2) as f32;
let box_aligned_y = inverted_pixel_y - (entity.height / 2) as f32;
(box_aligned_x, box_aligned_y)
}
pub fn entity_centre(level_height: i64, entity: &EntityInstance) -> (f32, f32) {
let x = entity.px[0] - (entity.width / 2);
let y = (level_height - entity.px[1] - entity.height / 2);
(x as f32, y as f32)
}
#[derive(Component)]
pub struct WorldLinked;
#[derive(Default, Resource, Clone)]
pub struct ActiveLevel {
pub map: String,
pub dirty: bool,
}
impl ActiveLevel {
pub fn new<T: ToString>(map: T) -> Self {
ActiveLevel {
map: map.to_string(),
dirty: false,
}
}
}
#[derive(Debug, Copy, Clone)]
pub struct Indexer {
width: isize,
height: isize,
}
impl Indexer {
pub fn new(width: impl AsPrimitive<isize>, height: impl AsPrimitive<isize>) -> Self {
Self {
width: width.as_(),
height: height.as_(),
}
}
pub fn index(&self, x: impl AsPrimitive<isize>, y: impl AsPrimitive<isize>) -> usize {
((y.as_() * self.width) + x.as_()).as_()
}
pub fn reverse(&self, index: impl AsPrimitive<isize>) -> (usize, usize) {
(
(index.as_() % self.width) as usize,
(index.as_() / self.width) as usize,
)
}
pub fn width(&self) -> isize {
self.width
}
pub fn height(&self) -> isize {
self.height
}
}