32 lines
1.2 KiB
Rust
32 lines
1.2 KiB
Rust
|
use rltk::{VirtualKeyCode, Rltk};
|
||
|
|
use specs::prelude::*;
|
||
|
|
use super::{Position, Player, TileType, xy_idx, State};
|
||
|
|
use std::cmp::{min, max};
|
||
|
|
|
||
|
|
pub fn try_move_player(delta_x: i32, delta_y: i32, ecs: &mut World) {
|
||
|
|
let mut positions = ecs.write_storage::<Position>();
|
||
|
|
let mut players = ecs.write_storage::<Player>();
|
||
|
|
let map = ecs.fetch::<Vec<TileType>>();
|
||
|
|
|
||
|
|
for (_player, pos) in (&mut players, &mut positions).join() {
|
||
|
|
let destination_idx = xy_idx(pos.x + delta_x, pos.y + delta_y);
|
||
|
|
if map[destination_idx] != TileType::Wall {
|
||
|
|
pos.x = min(79, max(0, pos.x + delta_x));
|
||
|
|
pos.y = min(49, max(0, pos.y + delta_y));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn player_input(gs: &mut State, ctx: &mut Rltk) {
|
||
|
|
// Player movement
|
||
|
|
match ctx.key {
|
||
|
|
None => {} // Nothing happened
|
||
|
|
Some(key) => match key {
|
||
|
|
VirtualKeyCode::Left => try_move_player(-1, 0, &mut gs.ecs),
|
||
|
|
VirtualKeyCode::Right => try_move_player(1, 0, &mut gs.ecs),
|
||
|
|
VirtualKeyCode::Up => try_move_player(0, -1, &mut gs.ecs),
|
||
|
|
VirtualKeyCode::Down => try_move_player(0, 1, &mut gs.ecs),
|
||
|
|
_ => {}
|
||
|
|
},
|
||
|
|
}
|
||
|
|
}
|