ActionWithDirection runstate

- setting this runstate with a function as arg will give a direction prompt, and then call the function with the selected direction as the argument. i.e. for opening a door or throwing an item in a specific direction

src/gui.rs

@@ -1,6 +1,6 @@
 use super::{
-    gamelog, rex_assets::RexAssets, CombatStats, Equipped, Hidden, HungerClock, HungerState, InBackpack, Map, Name,
-    Player, Point, Position, RunState, State, Viewshed,
+    gamelog, player::try_door, rex_assets::RexAssets, CombatStats, Equipped, Hidden, HungerClock, HungerState,
+    InBackpack, Map, Name, Player, Point, Position, RunState, State, Viewshed,
 };
 use rltk::{Rltk, VirtualKeyCode, RGB};
 use specs::prelude::*;
@@ -58,6 +58,30 @@ pub fn draw_ui(ecs: &World, ctx: &mut Rltk) {
     draw_tooltips(ecs, ctx);
 }
 
+pub fn get_input_direction(
+    ecs: &mut World,
+    ctx: &mut Rltk,
+    function: fn(i: i32, j: i32, ecs: &mut World) -> RunState,
+) -> RunState {
+    ctx.print_color(1, 1, RGB::named(rltk::WHITE), RGB::named(rltk::BLACK), "In what direction? [0-9]/[YUHJKLBN]");
+    match ctx.key {
+        None => return RunState::ActionWithDirection { function },
+        Some(key) => match key {
+            // Cardinals
+            VirtualKeyCode::Left | VirtualKeyCode::Numpad4 | VirtualKeyCode::H => return function(-1, 0, ecs),
+            VirtualKeyCode::Right | VirtualKeyCode::Numpad6 | VirtualKeyCode::L => return function(1, 0, ecs),
+            VirtualKeyCode::Up | VirtualKeyCode::Numpad8 | VirtualKeyCode::K => return function(0, -1, ecs),
+            VirtualKeyCode::Down | VirtualKeyCode::Numpad2 | VirtualKeyCode::J => return function(0, 1, ecs),
+            // Diagonals
+            VirtualKeyCode::Numpad9 | VirtualKeyCode::U => return function(1, -1, ecs),
+            VirtualKeyCode::Numpad7 | VirtualKeyCode::Y => return function(-1, -1, ecs),
+            VirtualKeyCode::Numpad3 | VirtualKeyCode::N => return function(1, 1, ecs),
+            VirtualKeyCode::Numpad1 | VirtualKeyCode::B => return function(-1, 1, ecs),
+            _ => return RunState::ActionWithDirection { function },
+        },
+    }
+}
+
 fn draw_tooltips(ecs: &World, ctx: &mut Rltk) {
     let map = ecs.fetch::<Map>();
     let names = ecs.read_storage::<Name>();