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use ggez::graphics::{spritebatch::SpriteBatch, DrawParam, Rect};
use ggez::nalgebra::{Point2, Vector2};
use std::time::Instant;
use crate::constants;
use crate::math::convert_angle_to_rad;
use crate::tileset::Tileset;
pub struct Tile {
source: Rect,
animations: Option<Vec<(usize, Rect)>>,
timer: Instant,
destination: Point2<f32>,
rotation: f32,
}
impl Tile {
pub fn new(text: &str, i: usize, tileset: &Tileset, width: usize, height: usize) -> Tile {
let id = text.parse::<usize>().unwrap();
let flip_d = (id & constants::FLIP_DIAGONAL_FLAG) == constants::FLIP_DIAGONAL_FLAG;
let flip_h = (id & constants::FLIP_HORIZONTAL_FLAG) == constants::FLIP_HORIZONTAL_FLAG;
let flip_v = (id & constants::FLIP_VERTICAL_FLAG) == constants::FLIP_VERTICAL_FLAG;
let id = if flip_h | flip_v | flip_d {
id & !constants::ALL_FLIP_FLAGS
} else {
id
};
let (source, rotation) = match (flip_d, flip_h, flip_v) {
(true, true, true) => (Tile::flip(tileset.get(id)), convert_angle_to_rad(90.0)),
(true, true, false) => (tileset.get(id), convert_angle_to_rad(90.0)),
(true, false, true) => (tileset.get(id), convert_angle_to_rad(270.0)),
//(true, false, false) => (),
(false, true, true) => (tileset.get(id), convert_angle_to_rad(180.0)),
(false, true, false) => (Tile::flip(tileset.get(id)), 0.0),
//(false, false, true) => (),
//(false, false, false) => (),
_ => (tileset.get(id), 0.0),
};
let x = i as f32 % width as f32;
let y = (i as f32 / height as f32).floor();
let offset = (constants::TILE_WIDTH / 2.0) * constants::TILE_SCALE;
let destination = Point2::new(
(constants::TILE_WIDTH * constants::TILE_SCALE * x) + offset,
(constants::TILE_HEIGHT * constants::TILE_SCALE * y) + offset,
);
Tile {
source,
animations: tileset.get_animations(id),
timer: Instant::now(),
destination,
rotation,
}
}
fn flip(rect: Rect) -> Rect {
let mut r = rect;
r.x *= -1.0;
r.x -= rect.w;
r
}
pub fn update(&mut self) {
if let Some(animations) = &self.animations {
if let Some(mut i) = animations.iter().position(|a| a.1 == self.source) {
if self.timer.elapsed().as_millis() > animations[i].0 as u128 {
i = if i == animations.len() - 1 { 0 } else { i + 1 };
self.source = animations[i].1;
self.timer = Instant::now()
}
}
}
}
pub fn draw(&self, spritebatch: &mut SpriteBatch) {
let draw_param = DrawParam::default()
.src(self.source)
.dest(self.destination)
.offset(Point2::new(0.5, 0.5))
.rotation(self.rotation)
.scale(Vector2::new(constants::TILE_SCALE, constants::TILE_SCALE));
spritebatch.add(draw_param);
}
}
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