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- use crate::components::{Position, Renderable};
- use crate::map;
- use rltk::{Console, Rltk};
- use specs::{Join, ReadExpect, ReadStorage, System};
- pub struct DrawRenderables<'r> {
- pub ctx: &'r mut Rltk,
- }
- impl<'a, 'r> System<'a> for DrawRenderables<'r> {
- type SystemData = (
- ReadStorage<'a, Position>,
- ReadStorage<'a, Renderable>,
- ReadExpect<'a, map::Map>,
- );
- fn run(&mut self, (positions, renderables, map): Self::SystemData) {
- let points = iproduct!(0..map::MAPHEIGHT, 0..map::MAPWIDTH);
- for (idx, (tile, (y, x))) in map.tiles.iter().zip(points).enumerate() {
- // Render a tile depending upon the tile type
- if map.revealed_tiles[idx] {
- let fg = if map.visible_tiles[idx] {
- tile.color()
- } else {
- tile.color().to_greyscale()
- };
- self.ctx.set(
- x as i32,
- y as i32,
- fg,
- rltk::RGB::from_f32(0., 0., 0.),
- tile.glyph(),
- );
- }
- }
- for (pos, render) in (&positions, &renderables).join() {
- let idx = map.xy_idx(pos.x, pos.y);
- if map.visible_tiles[idx] {
- self.ctx
- .set(pos.x, pos.y, render.fg, render.bg, render.glyph);
- }
- }
- }
- }
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