2022-01-25 14:41:24 +01:00
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use crate::{
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components::{CombatStats, Player, Position, Viewshed, WantsToMelee},
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map::{Map, TileType},
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RunState, State,
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2022-01-25 14:41:24 +01:00
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};
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2022-01-25 22:18:17 +01:00
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use rltk::{console, Point, Rltk, VirtualKeyCode};
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2022-01-25 14:41:24 +01:00
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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 combat_stats = ecs.read_storage::<CombatStats>();
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let entities = ecs.entities();
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let mut wants_to_melee = ecs.write_storage::<WantsToMelee>();
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let map = ecs.fetch::<Map>();
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2022-01-25 22:18:17 +01:00
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for (entity, _player, pos, viewshed) in
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(&entities, &mut players, &mut positions, &mut viewsheds).join()
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{
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let destination_idx = map.xy_idx(pos.x + delta_x, pos.y + delta_y);
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for potential_target in map.tile_content[destination_idx].iter() {
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let target = combat_stats.get(*potential_target);
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if let Some(_target) = target {
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wants_to_melee
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.insert(
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entity,
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WantsToMelee {
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target: *potential_target,
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},
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)
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.expect("Add target failed");
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}
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}
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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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viewshed.dirty = true;
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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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}
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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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match ctx.key {
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None => return RunState::AwaitingInput,
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Some(key) => match key {
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VirtualKeyCode::Left | VirtualKeyCode::H => try_move_player(-1, 0, &mut gs.ecs),
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VirtualKeyCode::Right | VirtualKeyCode::L => try_move_player(1, 0, &mut gs.ecs),
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VirtualKeyCode::Up | VirtualKeyCode::K => try_move_player(0, -1, &mut gs.ecs),
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VirtualKeyCode::Down | VirtualKeyCode::J => try_move_player(0, 1, &mut gs.ecs),
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VirtualKeyCode::Y => try_move_player(1, -1, &mut gs.ecs),
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VirtualKeyCode::U => try_move_player(-1, -1, &mut gs.ecs),
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VirtualKeyCode::N => try_move_player(1, 1, &mut gs.ecs),
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VirtualKeyCode::B => try_move_player(-1, 1, &mut gs.ecs),
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_ => return RunState::AwaitingInput,
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},
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}
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RunState::PlayerTurn
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}
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