Fixed #13. Show starting end exit point

demo/src/lib.rs

@@ -1,7 +1,7 @@
 use wasm_bindgen::prelude::*;
 use web_sys;
 use rand::prelude::*;
-use mapgen::{Map, MapBuilder, TileType};
+use mapgen::{Map, MapBuilder, TileType, geometry::Point};
 use mapgen::filter::*;
 
 
@@ -18,16 +18,24 @@ pub struct World {
     width: u32,
     height: u32,
     tiles: Vec<Cell>,
+    map: Map,
 }
 
+#[wasm_bindgen]
+pub struct Position {
+    col: usize,
+    row: usize,
+}
+
+
 #[wasm_bindgen]
 impl World {
     
-    fn new(width: u32, height: u32, map: &Map) -> World {
+    fn new(width: u32, height: u32, map: Map) -> World {
         let tiles = (0..map.tiles.len())
             .map(|i| if map.tiles[i] == TileType::Floor {Cell::Floor} else {Cell::Wall})
             .collect();
-        World { width, height, tiles }
+        World { width, height, tiles, map }
     }
 
     pub fn new_cellular_automata(width: u32, height: u32, seed: u32) -> World {
@@ -40,7 +48,7 @@ impl World {
             .with(CullUnreachable::new())
             .with(DistantExit::new())
             .build_with_rng(&mut rng);
-        World::new(width, height, &map)
+        World::new(width, height, map)
     }
 
     pub fn new_simple_rooms(width: u32, height: u32, seed: u32) -> World {
@@ -49,8 +57,10 @@ impl World {
         let map = MapBuilder::new(80, 50)
             .with(SimpleRooms::new())
             .with(NearestCorridors::new())
+            .with(AreaStartingPosition::new(XStart::CENTER, YStart::CENTER))
+            .with(DistantExit::new())
             .build_with_rng(&mut rng);
-        World::new(width, height, &map)
+        World::new(width, height, map)
     }
 
     pub fn new_bsp_interior(width: u32, height: u32, seed: u32) -> World {
@@ -58,8 +68,11 @@ impl World {
         let mut rng = StdRng::seed_from_u64(seed as u64);
         let map = MapBuilder::new(80, 50)
             .with(BspInterior::new())
+            .with(AreaStartingPosition::new(XStart::CENTER, YStart::CENTER))
+            .with(CullUnreachable::new())
+            .with(DistantExit::new())
             .build_with_rng(&mut rng);
-        World::new(width, height, &map)
+        World::new(width, height, map)
     }
 
     pub fn new_drunkard(width: u32, height: u32, seed: u32) -> World {
@@ -69,8 +82,9 @@ impl World {
             .with(DrunkardsWalk::open_halls())
             .with(AreaStartingPosition::new(XStart::CENTER, YStart::CENTER))
             .with(CullUnreachable::new())
+            .with(DistantExit::new())
             .build_with_rng(&mut rng);
-        World::new(width, height, &map)
+        World::new(width, height, map)
     }
 
     pub fn new_random(width: u32, height: u32, seed: u32) -> World {
@@ -99,10 +113,35 @@ impl World {
         self.tiles.as_ptr()
     }
 
+    pub fn player_pos(&self) -> Position {
+        let p = self.map.starting_point.unwrap_or(Point::new(0, 0));
+        Position { col: p.x, row: p.y }
+    }
+
+    pub fn exit_pos(&self) -> Position {
+        let p = self.map.exit_point.unwrap_or(Point::new(0, 0));
+        Position { col: p.x, row: p.y }
+    }
+
     fn print_map_info(info: String) {
         let window = web_sys::window().expect("no global `window` exists");
         let document = window.document().expect("should have a document on window");
         let div = document.get_element_by_id("map-info").expect("Need div with id: map-info");
         div.set_inner_html(&info);
     }
+}
+
+#[wasm_bindgen]
+impl Position {
+    pub fn new(col: usize, row: usize) -> Position {
+        Position { col, row }
+    }
+
+    pub fn col(&self) -> usize {
+        self.col
+    }
+    
+    pub fn row(&self) -> usize {
+        self.row
+    }
 }

demo/www/index.js

@@ -87,13 +87,20 @@ const draw_tile = (ctx, row, col, tile_type) => {
     if (tile_type == "floor") {
         tile_x = 3;
         tile_y = 2;
-    } else if (tile_type == "inner_wall") {
-        tile_x = 18;
-        tile_y = 0;
-    } else {
+    } else if (tile_type == "wall") {
         tile_x = 0;
         tile_y = 3;
+    } else if (tile_type == "player") {
+        tile_x = 0;
+        tile_y = 8;
+    } else if (tile_type == "exit") {
+        tile_x = 10;
+        tile_y = 1;
+    } else {
+        tile_x = 18;
+        tile_y = 0;
     }
+
     ctx.drawImage(
         tiles_image,
         tile_x * TILE_SIZE + 3,
@@ -111,8 +118,7 @@ const drawCells = () => {
     const tilesPtr = world.tiles();
     const tiles = new Uint8Array(memory.buffer, tilesPtr, GRID_COLS * GRID_ROWS);
 
-    ctx.beginPath();
-
+    // tiles
     for (let row = 0; row < GRID_ROWS; row++) {
         for (let col = 0; col < GRID_COLS; col++) {
             const idx = getIndex(row, col);
@@ -126,7 +132,13 @@ const drawCells = () => {
         }
     }
 
-    ctx.stroke();
+    // Player position
+    let player = world.player_pos();
+    draw_tile(ctx, player.row(), player.col(), "player");
+
+    // Exit position
+    let exit = world.exit_pos();
+    draw_tile(ctx, exit.row(), exit.col(), "exit");
 };
 
 newRandomGen();