25 lines
803 B
Rust
25 lines
803 B
Rust
use crate::prelude::*;
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#[system]
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#[read_component(Point)]
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#[read_component(Render)]
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#[read_component(Player)]
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#[read_component(FieldOfView)]
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pub fn entity_render(ecs: &mut SubWorld, #[resource] camera: &mut Camera) {
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let mut renderables = <(&Point, &Render)>::query();
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let mut fov = <&FieldOfView>::query().filter(component::<Player>());
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let player_fov = fov.iter(ecs).nth(0).unwrap();
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let mut draw_batch = DrawBatch::new();
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draw_batch.target(1);
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let offset = Point::new(camera.left_x, camera.top_y);
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renderables
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.iter(ecs)
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.filter(|(pos, _)| player_fov.visible_tiles.contains(&pos))
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.for_each(|(pos, render)| {
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draw_batch.set(*pos - offset, render.color, render.glyph);
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});
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draw_batch.submit(5000).expect("Batch error");
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}
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