74 lines
2.5 KiB
Rust
74 lines
2.5 KiB
Rust
use super::{Map, Player, Position, State, TileType, Viewshed};
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use crate::RunState;
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use rltk::{Point, 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.blocked[destination_idx] {
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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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let mut ppos = ecs.write_resource::<Point>();
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ppos.x = pos.x;
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ppos.y = pos.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) -> RunState {
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// Player movement
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match ctx.key {
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None => return RunState::Paused, // Nothing happened
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Some(key) => match key {
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VirtualKeyCode::Left
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| VirtualKeyCode::Numpad4
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| VirtualKeyCode::H
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| VirtualKeyCode::A => try_move_player(-1, 0, &mut gs.ecs),
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VirtualKeyCode::Right
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| VirtualKeyCode::Numpad6
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| VirtualKeyCode::L
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| VirtualKeyCode::D => try_move_player(1, 0, &mut gs.ecs),
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VirtualKeyCode::Up
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| VirtualKeyCode::Numpad8
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| VirtualKeyCode::K
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| VirtualKeyCode::W => try_move_player(0, -1, &mut gs.ecs),
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VirtualKeyCode::Down
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| VirtualKeyCode::Numpad2
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| VirtualKeyCode::J
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| VirtualKeyCode::S
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| VirtualKeyCode::X => try_move_player(0, 1, &mut gs.ecs),
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// Diagonals
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VirtualKeyCode::Numpad9 | VirtualKeyCode::Y | VirtualKeyCode::E => {
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try_move_player(1, -1, &mut gs.ecs)
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}
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VirtualKeyCode::Numpad7 | VirtualKeyCode::U | VirtualKeyCode::Q => {
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try_move_player(-1, -1, &mut gs.ecs)
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}
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VirtualKeyCode::Numpad3 | VirtualKeyCode::N | VirtualKeyCode::C => {
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try_move_player(1, 1, &mut gs.ecs)
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}
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VirtualKeyCode::Numpad1 | VirtualKeyCode::B | VirtualKeyCode::Z => {
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try_move_player(-1, 1, &mut gs.ecs)
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}
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_ => return RunState::Paused,
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},
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}
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RunState::Running
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}
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