Basic demo app

.gitignore

@@ -1,2 +1,3 @@
 /target
+/demo/target
 Cargo.lock

README.md

@@ -2,7 +2,6 @@
 
 [![Build Status](https://travis-ci.org/klangner/mapgen.rs.svg?branch=master)](https://travis-ci.org/klangner/mapgen.rs)
 [![Crates.io](https://img.shields.io/crates/v/mapgen.svg)](https://crates.io/crates/mapgen) 
-[![Crates.io](https://img.shields.io/crates/l/mapgen.svg)](https://github.com/klangner/mapgen.rs/blob/master/LICENSE-MIT)
 [![mapgen.rs](https://docs.rs/mapgen/badge.svg)](https://docs.rs/mapgen/)
 
 Generate procedural maps for games.

demo/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "mapgen-demo"
+version = "0.1.0"
+authors = ["Krzysztof Langner <klangner@gmail.com>"]
+edition = "2018"
+
+[dependencies]
+amethyst = {version = "0.15", features = ["tiles", "no-slow-safety-checks"]}
+log = { version = "0.4.8", features = ["serde"] }
+mapgen = {path=".."}
+
+[features]
+default = ["metal"]
+metal = ["amethyst/metal"]
+vulkan = ["amethyst/vulkan"]

demo/assets/texture/cp437_20x20.ron

@@ -0,0 +1,8 @@
+#![enable(implicit_some)]
+
+Grid((
+    texture_width: 320,
+    texture_height: 320,
+    columns: 16,
+    rows: 16,
+))

demo/config/display.ron

@@ -0,0 +1,4 @@
+(
+  title: "mapgen demo",
+  dimensions: Some((840, 520)),
+)

demo/config/input.ron

@@ -0,0 +1,27 @@
+
+(
+    axes: {
+        "camera_x": Emulated(
+            pos: Key(D),
+            neg: Key(A),
+        ),
+        "camera_y": Emulated(
+            pos: Key(W),
+            neg: Key(S),
+        ),
+         "camera_scale": Emulated(
+                pos: Key(E),
+                neg: Key(Q),
+            ),
+        "camera_z": Emulated(
+            pos: Key(R),
+            neg: Key(F),
+        ),
+    },
+    actions: {
+        "camera_switch": [[Key(Space)]],
+        "select": [[Mouse(Left)]],
+        "toggle_rotation": [[Key(Y)]],
+        "toggle_translation": [[Key(T)]],
+    },
+)

demo/src/main.rs

@@ -0,0 +1,150 @@
+use amethyst::{
+    assets::{AssetStorage, Loader},
+    core::{
+        math::{Point3, Vector3},
+        Transform, TransformBundle,
+    },
+    ecs::Entity,
+    input::{is_close_requested, is_key_down, InputBundle, StringBindings},
+    prelude::*,
+    renderer::{
+        camera::Camera,
+        formats::texture::ImageFormat,
+        sprite::{SpriteSheet, SpriteSheetFormat, SpriteSheetHandle},
+        types::DefaultBackend,
+        RenderFlat2D, RenderToWindow, RenderingBundle, Texture,
+    },
+    tiles::{MortonEncoder, RenderTiles2D, Tile, TileMap},
+    utils::application_root_dir,
+    window::ScreenDimensions,
+    winit,
+};
+use mapgen::dungeon::{
+    map::{Map, TileType},
+};
+
+
+#[derive(Default, Clone)]
+struct MapTiles ;
+
+impl Tile for MapTiles {
+    fn sprite(&self, p: Point3<u32>, world: &World) -> Option<usize> {
+        let map = world.read_resource::<Map>();
+        if map.at(p.x as usize, p.y as usize) == TileType::Wall {
+            Some(35)
+        } else {
+            Some(46)
+        }
+    }
+}
+
+fn load_tiles_sprite_sheet(world: &mut World, png_path: &str, ron_path: &str) -> SpriteSheetHandle {
+    let texture_handle = {
+        let loader = world.read_resource::<Loader>();
+        let texture_storage = world.read_resource::<AssetStorage<Texture>>();
+        loader.load(png_path, ImageFormat::default(), (), &texture_storage)
+    };
+    let loader = world.read_resource::<Loader>();
+    let sprite_sheet_store = world.read_resource::<AssetStorage<SpriteSheet>>();
+    loader.load(
+        ron_path,
+        SpriteSheetFormat(texture_handle),
+        (),
+        &sprite_sheet_store,
+    )
+}
+
+fn init_camera(world: &mut World, transform: Transform, camera: Camera) -> Entity {
+    world
+        .create_entity()
+        .with(transform)
+        .with(camera)
+        .named("camera")
+        .build()
+}
+
+
+struct PlayState;
+impl SimpleState for PlayState {
+    fn on_start(&mut self, data: StateData<'_, GameData<'_, '_>>) {
+
+        let world = data.world;
+        
+        // Create map
+        let map = Map::new(80, 50);
+        world.insert(map);
+
+        let map_sprite_sheet_handle =
+            load_tiles_sprite_sheet(world, "texture/cp437_20x20.png", "texture/cp437_20x20.ron");
+
+        let (width, height) = {
+            let dim = world.read_resource::<ScreenDimensions>();
+            (dim.width(), dim.height())
+        };
+
+        let _camera = init_camera(
+            world,
+            Transform::from(Vector3::new(-10.0, 10.0, 1.1)),
+            Camera::standard_2d(width, height),
+        );
+
+        let tile_map = TileMap::<MapTiles, MortonEncoder>::new(
+            Vector3::new(80, 50, 1),
+            Vector3::new(20, 20, 1),
+            Some(map_sprite_sheet_handle),
+        );
+
+        let _map_entity = world
+            .create_entity()
+            .with(tile_map)
+            .with(Transform::default())
+            .build();
+    }
+
+    fn handle_event(
+        &mut self,
+        data: StateData<'_, GameData<'_, '_>>,
+        event: StateEvent,
+    ) -> SimpleTrans {
+        let StateData { .. } = data;
+        if let StateEvent::Window(event) = &event {
+            if is_close_requested(&event) || is_key_down(&event, winit::VirtualKeyCode::Escape) {
+                Trans::Quit
+            } else {
+                Trans::None
+            }
+        } else {
+            Trans::None
+        }
+    }
+}
+
+fn main() -> amethyst::Result<()> {
+    amethyst::Logger::from_config(Default::default())
+        .level_for("demo", log::LevelFilter::Warn)
+        .start();
+
+    let app_root = application_root_dir()?;
+    let assets_directory = app_root.join("assets");
+    let display_config_path = app_root.join("config/display.ron");
+
+    let game_data = GameDataBuilder::default()
+        .with_bundle(TransformBundle::new())?
+        .with_bundle(
+            InputBundle::<StringBindings>::new()
+                .with_bindings_from_file("config/input.ron")?,
+        )?
+        .with_bundle(
+            RenderingBundle::<DefaultBackend>::new()
+                .with_plugin(
+                    RenderToWindow::from_config_path(display_config_path)?
+                        .with_clear([0.0, 0.0, 0.0, 1.0]),
+                )
+                .with_plugin(RenderFlat2D::default())
+                .with_plugin(RenderTiles2D::<MapTiles, MortonEncoder>::default()),
+        )?;
+
+    let mut game = Application::build(assets_directory, PlayState)?.build(game_data)?;
+    game.run();
+    Ok(())
+}

src/dungeon/map.rs

@@ -6,15 +6,15 @@ pub enum TileType {
 #[derive(Default, Clone)]
 pub struct Map {
     pub tiles : Vec<TileType>,
-    pub width : i32,
-    pub height : i32,
+    pub width : usize,
+    pub height : usize,
 }
 
 impl Map {
 
     /// Generates an empty map, consisting entirely of solid walls
-    pub fn new(width: i32, height: i32) -> Map {
-        let map_tile_count = (width*height) as usize;
+    pub fn new(width: usize, height: usize) -> Map {
+        let map_tile_count = width*height;
         Map{
             tiles : vec![TileType::Wall; map_tile_count],
             width,
@@ -22,8 +22,8 @@ impl Map {
         }
     }
 
-    pub fn at(&self, x: i32, y: i32) -> TileType {
-        let idx = (y as usize * self.width as usize) + x as usize;
+    pub fn at(&self, x: usize, y: usize) -> TileType {
+        let idx = y * self.width + x;
         self.tiles[idx]
     }