59 lines
2.0 KiB
Rust
59 lines
2.0 KiB
Rust
use rltk::{Rltk, VirtualKeyCode};
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use specs::prelude::*;
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use super::{entity::TileType, Player, Position, Viewshed};
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use crate::map::Map;
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use crate::state::State;
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pub fn try_move(dx: i32, dy: i32, ecs: &mut World) {
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let mut posns = ecs.write_storage::<Position>();
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let mut players = ecs.write_storage::<Player>();
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let mut viewsheds = ecs.write_storage::<Viewshed>();
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let map = ecs.fetch::<Map>();
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(&mut players, &mut posns, &mut viewsheds).join().for_each(
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|(_player, pos, viewshed)| {
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let dest_idx = map.xy_idx(pos.x + dx, pos.y + dy);
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if map.tiles[dest_idx] != TileType::Wall {
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pos.x += dx;
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pos.y += dy;
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if pos.x < 0 {
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pos.x = 0;
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}
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if pos.x > 79 {
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pos.x = 79;
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}
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if pos.y < 0 {
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pos.y = 0;
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}
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if pos.y > 49 {
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pos.y = 49;
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}
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viewshed.dirty = true;
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}
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},
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);
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}
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pub fn input(gs: &mut State, ctx: &mut Rltk) {
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match ctx.key {
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None => {}
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Some(key) => match key {
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VirtualKeyCode::Left => try_move(-1, 0, &mut gs.ecs),
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VirtualKeyCode::Numpad4 => try_move(-1, 0, &mut gs.ecs),
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VirtualKeyCode::H => try_move(-1, 0, &mut gs.ecs),
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VirtualKeyCode::Right => try_move(1, 0, &mut gs.ecs),
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VirtualKeyCode::Numpad6 => try_move(1, 0, &mut gs.ecs),
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VirtualKeyCode::L => try_move(1, 0, &mut gs.ecs),
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VirtualKeyCode::Up => try_move(0, -1, &mut gs.ecs),
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VirtualKeyCode::Numpad8 => try_move(0, -1, &mut gs.ecs),
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VirtualKeyCode::K => try_move(0, -1, &mut gs.ecs),
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VirtualKeyCode::Down => try_move(0, 1, &mut gs.ecs),
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VirtualKeyCode::Numpad2 => try_move(0, 1, &mut gs.ecs),
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VirtualKeyCode::J => try_move(0, 1, &mut gs.ecs),
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_ => {}
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},
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}
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}
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