48 lines
1.6 KiB
Rust
48 lines
1.6 KiB
Rust
use super::{Map, Player, Position, State, TileType, Viewshed};
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use rltk::{Rltk, VirtualKeyCode};
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use specs::prelude::*;
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use std::cmp::{max, min};
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pub fn try_move_player(delta_x: i32, delta_y: i32, ecs: &mut World) {
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let mut positions = 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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for (_player, pos, viewshed) in (&mut players, &mut positions, &mut viewsheds).join() {
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let destination_idx = map.xy_idx(pos.x + delta_x, pos.y + delta_y);
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if map.tiles[destination_idx] != TileType::Wall {
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pos.x = min(79, max(0, pos.x + delta_x));
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pos.y = min(49, max(0, pos.y + delta_y));
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viewshed.dirty = true;
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}
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}
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}
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pub fn player_input(gs: &mut State, ctx: &mut Rltk) {
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// Player movement
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match ctx.key {
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None => {} // Nothing happened
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Some(key) => match key {
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VirtualKeyCode::Left | VirtualKeyCode::Numpad4 | VirtualKeyCode::H => {
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try_move_player(-1, 0, &mut gs.ecs)
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}
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VirtualKeyCode::Right | VirtualKeyCode::Numpad6 | VirtualKeyCode::L => {
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try_move_player(1, 0, &mut gs.ecs)
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}
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VirtualKeyCode::Up | VirtualKeyCode::Numpad8 | VirtualKeyCode::K => {
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try_move_player(0, -1, &mut gs.ecs)
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}
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VirtualKeyCode::Down | VirtualKeyCode::Numpad2 | VirtualKeyCode::J => {
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try_move_player(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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}
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