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use ggez::filesystem::File;
use ggez::graphics::Rect;
use std::collections::HashMap;
use std::f32::consts::PI;
use crate::animations::Animation;
use crate::constants::{self, FLIP_A, FLIP_D, FLIP_H, FLIP_V};
use crate::property::Property;
use crate::xmlelements::XMLElements;
#[derive(Clone, Debug, PartialEq)]
pub struct Tile {
pub source: Rect,
pub property: Property,
}
impl Tile {
pub fn new(source: Rect, property: Property) -> Tile {
Tile { source, property }
}
pub fn flip(&mut self) {
self.source.x *= -1.0;
self.source.x -= self.source.w;
}
}
fn flip(tile: Tile) -> Tile {
let mut t = tile.clone();
t.source.x *= -1.0;
t.source.x -= t.source.w;
t
}
impl Default for Tile {
fn default() -> Tile {
Tile::new(Rect::zero(), Property::default())
}
}
pub struct Tileset {
tiles: HashMap<usize, Tile>,
}
impl Tileset {
pub fn new(file: File) -> Tileset {
let elements = XMLElements::new(file);
let height = elements
.get_element_attribute("image", "height")
.unwrap()
.parse::<usize>()
.unwrap();
let columns = elements
.get_element_attribute("tileset", "columns")
.unwrap()
.parse::<usize>()
.unwrap();
let rows = height / (constants::TILE_HEIGHT as usize);
let mut tiles = HashMap::new();
tiles.insert(0, Tile::default());
let w = 1.0 / columns as f32;
let h = 1.0 / rows as f32;
let mut id = 1;
for r in 0..rows {
for c in 0..columns {
let x = c as f32 / columns as f32;
let y = r as f32 / rows as f32;
let tile_element = elements.get_elements("tile").into_iter().find(|e| {
XMLElements::get_attribute(e, "id")
.unwrap()
.parse::<usize>()
.unwrap()
+ 1
== id
});
let property = match tile_element {
Some(tile_element) => {
Property::new(elements.get_children(&tile_element, "property"))
}
None => Property::default(),
};
tiles.insert(id, Tile::new(Rect::new(x, y, w, h), property));
id += 1;
}
}
for (id, tile) in tiles.clone().into_iter() {
for i in 1..8 {
let (new_id, new_tile) = match i {
1 => ((id | FLIP_H), tile.clone()),
2 => ((id | FLIP_V), flip(tile.clone())),
3 => ((id | FLIP_D), tile.clone()),
4 => ((id | FLIP_D | FLIP_H), tile.clone()),
5 => ((id | FLIP_D | FLIP_V), tile.clone()),
6 => ((id | FLIP_H | FLIP_V), tile.clone()),
7 => ((id | FLIP_A), tile.clone()),
_ => (0, Tile::default()),
};
if new_id != 0 {
tiles.insert(new_id, new_tile);
}
}
}
Tileset { tiles }
}
pub fn get_spawn_tiles(&self) -> HashMap<usize, Tile> {
self.tiles
.clone()
.into_iter()
.filter(|(_, t)| t.property.spawn.is_some())
.collect()
}
pub fn get_animation(&self, tile_id: usize) -> Animation {
let first_tile = self
.tiles
.iter()
.find(|(id, _)| id == &&tile_id)
.unwrap()
.1
.clone();
if first_tile.property.entity.is_some() {
Animation::new(
self.tiles
.values()
.cloned()
.filter(|t| t.property.entity == first_tile.property.entity)
.collect(),
)
} else {
Animation::new(vec![first_tile])
}
}
pub fn get_tile_by_entity_keyframe(&self, entity: &str, keyframe: usize) -> Tile {
let tile_id = self
.tiles
.iter()
.find(|(_, t)| {
t.property.entity == Some(entity.to_string())
&& Some(keyframe) == t.property.keyframe
})
.unwrap()
.0;
self.tiles.get(tile_id).unwrap().clone()
}
}
pub fn convert_angle_to_rad(angle: f32) -> f32 {
angle * (PI / 180.0)
}
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