From fe7eef77704f095377ffb35e2c331f3af6a484e8 Mon Sep 17 00:00:00 2001
From: Alex Page <alex@anpage.me>
Date: Thu, 3 Feb 2022 20:16:33 -0500
Subject: [PATCH] Add changing levels when touching stairs

---
 src/input/player.rs  |  2 +-
 src/main.rs          |  3 ++-
 src/resources/mod.rs |  1 +
 src/state.rs         | 22 ++++++++++++++++++++--
 4 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/src/input/player.rs b/src/input/player.rs
index 1d5c416..df9906b 100644
--- a/src/input/player.rs
+++ b/src/input/player.rs
@@ -93,7 +93,7 @@ fn try_step(point: Point, _world: &World, resources: &mut Resources) -> bool {
             true
         }
         crate::tile_data::TileType::Stairs => {
-            // TODO: Go to next level
+            resources.should_advance_level = true;
             true
         }
         crate::tile_data::TileType::Chest => todo!(),
diff --git a/src/main.rs b/src/main.rs
index 6a847bd..cd82959 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -57,7 +57,8 @@ fn main() -> BError {
         sound_effects,
         sound_output,
         selected_difficulty: Some(selected_difficulty),
-        flashing_message: None,
+        flashing_message: Some(FlashingMessage::from("Press any key to begin this level.")),
+        should_advance_level: false,
     };
 
     // let descent_sounds: Vec<Sound> = (20..100)
diff --git a/src/resources/mod.rs b/src/resources/mod.rs
index 4e79285..ab7b5cd 100644
--- a/src/resources/mod.rs
+++ b/src/resources/mod.rs
@@ -27,4 +27,5 @@ pub struct Resources {
     pub sound_effects: SoundEffects,
     pub sound_output: SoundOutput,
     pub flashing_message: Option<FlashingMessage>,
+    pub should_advance_level: bool,
 }
diff --git a/src/state.rs b/src/state.rs
index d09162d..101e160 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -1,5 +1,6 @@
-use crate::resources::Resources;
-use crate::{graphics, input, systems};
+use crate::resources::flashing_message::FlashingMessage;
+use crate::resources::{Map, Resources};
+use crate::{graphics, input, levels, systems};
 use bracket_lib::prelude::*;
 use hecs::World;
 
@@ -13,6 +14,10 @@ impl GameState for State {
         input::handle(&mut self.world, &mut self.resources, bterm);
         systems::run(&mut self.world, &mut self.resources);
         graphics::draw(&self.world, &mut self.resources, bterm);
+
+        if self.resources.should_advance_level {
+            self.next_level();
+        }
     }
 }
 
@@ -20,4 +25,17 @@ impl State {
     pub fn new(world: World, resources: Resources) -> Self {
         State { world, resources }
     }
+
+    fn next_level(&mut self) {
+        self.resources.level_number += 1;
+
+        self.world.clear();
+        self.resources.map = Map::from(levels::get_level(self.resources.level_number));
+        self.resources.map.spawn_entities(&mut self.world);
+
+        self.resources.flashing_message =
+            Some(FlashingMessage::from("Press any key to begin this level."));
+
+        self.resources.should_advance_level = false;
+    }
 }