Starting to get something

src/engine/character.rs

@@ -8,7 +8,10 @@ use crate::engine::event::{Event, Keyboard};
 use crate::engine::math::{clamp, duration_as_f64};
 use crate::engine::physics;
 use crate::engine::scene::Updatable;
+use crate::engine::texture::Texture;
 use crate::engine::vector::Vector;
+use crate::engine::Drawable;
+use crate::log;
 
 /// The different sides a character can face.
 pub enum Side {
@@ -67,7 +70,7 @@ pub struct Character {
     max_jump: usize,
 
     /// The timer of the character's animation.
-    animation_timer: Instant,
+    animation_timer: Duration,
 
     /// Whether the character is walking or not.
     walking: bool,
@@ -86,7 +89,7 @@ impl Character {
             side: Side::Right,
             jump_counter: 1,
             max_jump: 1,
-            animation_timer: Instant::now(),
+            animation_timer: Duration::from_millis(0),
             can_jump: true,
             walking: false,
         }
@@ -124,7 +127,7 @@ impl Character {
 
     /// Makes the player die.
     pub fn die(&self) {
-        panic!();
+        log!("dead");
     }
 
     /// Returns a reference to the controls.
@@ -153,13 +156,13 @@ impl Updatable for Character {
 
         if let Some(side) = Side::from_force(force) {
             if !self.walking {
-                self.animation_timer = Instant::now();
+                self.animation_timer = Duration::from_millis(0);
             }
             self.walking = true;
             self.side = side;
         } else {
             if self.walking {
-                self.animation_timer = Instant::now();
+                self.animation_timer = Duration::from_millis(0);
             }
             self.walking = false;
         }
@@ -210,18 +213,18 @@ impl Updatable for Character {
     }
 }
 
-// impl Drawable for Character {
-//     fn texture(&self) -> Texture {
-//         Texture::Rusty
-//     }
-//
-//     fn texture_rect(&self) -> IntRect {
-//         let frame = duration_as_frame(&Instant::now().duration_since(self.animation_timer), 4);
-//         let offset = if self.walking { 64 } else { 0 };
-//         IntRect::new(self.side.offset() + offset, frame * 32, 32, 32)
-//     }
-//
-//     fn position(&self) -> Vector<f32> {
-//         self.position
-//     }
-// }
+impl Drawable for Character {
+    fn texture(&self) -> Texture {
+        Texture::Rusty
+    }
+
+    fn texture_rect(&self) -> Bbox {
+        let frame = 0.0; // duration_as_frame(&Instant::now().duration_since(self.animation_timer), 4);
+        let offset = if self.walking { 64.0 } else { 0.0 };
+        Bbox::new(self.side.offset() as f64 + offset, frame * 32.0, 32.0, 32.0)
+    }
+
+    fn position(&self) -> Vector {
+        self.position
+    }
+}

src/engine/controls.rs

@@ -2,6 +2,7 @@
 
 use crate::engine::event::{Event, Key, Keyboard};
 use crate::engine::vector::Vector;
+use crate::log;
 
 /// The different actions that a user can do.
 pub enum Action {

src/engine/map.rs

@@ -2,8 +2,10 @@
 
 use crate::engine::bbox::Bbox;
 use crate::engine::math::{clamp, Matrix};
+use crate::engine::texture::Texture;
 use crate::engine::texture::SPRITE_SIZE;
 use crate::engine::vector::Vector;
+use crate::engine::Drawable;
 use crate::Result;
 
 /// Converts the byte with bits corresponding to the neighbours to the offset on the generated
@@ -62,7 +64,7 @@ pub fn byte_to_index(byte: u8) -> i32 {
 }
 
 /// This enum represents if the collision happens on the X axis or the Y axis.
-#[derive(Copy, Clone)]
+#[derive(Debug, Copy, Clone)]
 pub enum CollisionAxis {
     /// The X axis.
     X,
@@ -226,20 +228,20 @@ pub struct PositionedTile {
     pub position: Vector,
 }
 
-// impl Drawable for PositionedTile {
-//     fn texture(&self) -> Texture {
-//         Texture::Overworld
-//     }
-//
-//     fn texture_rect(&self) -> Bbox {
-//         let offset = self.graphic.offset();
-//         Bbox::new(offset.x, offset.x, SPRITE_SIZE, SPRITE_SIZE)
-//     }
-//
-//     fn position(&self) -> Vector {
-//         self.position
-//     }
-// }
+impl Drawable for PositionedTile {
+    fn texture(&self) -> Texture {
+        Texture::Overworld
+    }
+
+    fn texture_rect(&self) -> Bbox {
+        let offset = self.graphic.offset();
+        Bbox::new(offset.0 as f64, offset.0 as f64, SPRITE_SIZE, SPRITE_SIZE)
+    }
+
+    fn position(&self) -> Vector {
+        self.position
+    }
+}
 
 /// The map represents the tiles contained in a level.
 #[derive(Clone)]

src/engine/mod.rs

@@ -18,10 +18,14 @@ use std::time::Duration;
 use wasm_bindgen::prelude::*;
 use wasm_bindgen::JsCast;
 
+use crate::engine::bbox::Bbox;
+use crate::engine::character::Character;
+use crate::engine::controls::Controls;
 use crate::engine::event::{Key, Keyboard};
 use crate::engine::map::Map;
 use crate::engine::scene::{Scene, State};
-use crate::engine::texture::TextureManager;
+use crate::engine::texture::{Texture, TextureManager};
+use crate::engine::vector::Vector;
 use crate::{error_js, log, Result};
 
 macro_rules! unwrap {
@@ -41,6 +45,9 @@ pub struct Engine {
     /// We need Rc<RefCell> in order to deal with events.
     pub inner: Rc<RefCell<InnerEngine>>,
 
+    /// The web page window.
+    pub window: Rc<web_sys::Window>,
+
     /// The web page document.
     pub document: Rc<web_sys::Document>,
 
@@ -61,20 +68,24 @@ impl Engine {
         canvas.set_width(1920);
         canvas.set_height(1080);
 
-        let context = canvas
-            .get_context("2d")?
-            .unwrap()
-            .dyn_into::<web_sys::CanvasRenderingContext2d>()?;
+        let context =
+            unwrap!(canvas.get_context("2d")?).dyn_into::<web_sys::CanvasRenderingContext2d>()?;
 
         let map = Map::from_str(include_str!("../../static/levels/level1.lvl")).unwrap();
-        let scene = Scene::from_map(map);
+        let mut scene = Scene::from_map(map);
+
+        let character = Character::with_controls(Controls::default_keyboard());
+        scene.add(character);
+
         let inner = InnerEngine::new(&document, scene)?;
 
+        let window = Rc::new(window);
         let document = Rc::new(document);
         let context = Rc::new(context);
 
         Ok(Engine {
             inner: Rc::new(RefCell::new(inner)),
+            window,
             document,
             context,
         })
@@ -89,10 +100,7 @@ impl Engine {
             }
         });
 
-        web_sys::window()
-            .unwrap()
-            .request_animation_frame(cb.as_ref().unchecked_ref())
-            .unwrap();
+        (*self.window).request_animation_frame(cb.as_ref().unchecked_ref())?;
 
         cb.forget();
 
@@ -115,10 +123,7 @@ impl Engine {
             }
         });
 
-        web_sys::window()
-            .unwrap()
-            .request_animation_frame(cb.as_ref().unchecked_ref())
-            .unwrap();
+        (*self.window).request_animation_frame(cb.as_ref().unchecked_ref())?;
 
         cb.forget();
 
@@ -142,29 +147,19 @@ impl Engine {
             // running = false;
         }
 
-        // Perform update
-        let mut dx = 0.0;
-        let mut dy = 0.0;
+        Ok(())
+    }
 
-        if inner.keyboard.is_key_pressed(Key::ArrowDown) {
-            dy += 5.0;
-        }
+    /// Draw a drawable.
+    pub fn draw<D: Drawable>(&self, drawable: &D) -> Result<()> {
+        let inner = self.inner.borrow();
+        let image = inner.textures.get(drawable.texture());
 
-        if inner.keyboard.is_key_pressed(Key::ArrowUp) {
-            dy -= 5.0;
-        }
-
-        if inner.keyboard.is_key_pressed(Key::ArrowLeft) {
-            dx -= 5.0;
-        }
-
-        if inner.keyboard.is_key_pressed(Key::ArrowRight) {
-            dx += 5.0;
-        }
-
-        inner.x += dx;
-        inner.y += dy;
+        let source = drawable.texture_rect();
+        let mut dest = source.clone();
+        dest.position = drawable.position();
 
+        image.render(source, dest, &self.context)?;
         Ok(())
     }
 
@@ -172,12 +167,32 @@ impl Engine {
     pub fn render(&self) -> Result<()> {
         let inner = self.inner.borrow();
 
-        // Perform render
+        // Clear render
         self.context.clear_rect(0.0, 0.0, 1920.0, 1080.0);
-        inner
-            .textures
-            .rusty
-            .render(inner.x, inner.y, &self.context)?;
+        self.context
+            .set_fill_style(&JsValue::from_str("rgb(135, 206, 235)"));
+        self.context.fill_rect(0.0, 0.0, 1920.0, 1080.0);
+
+        // Draw the scene
+        let map = inner.scene.map();
+        let rows = map.rows();
+        let cols = map.cols();
+
+        for i in 0..rows {
+            for j in 0..cols {
+                let tile = map.at(i, j);
+                if tile.graphic.is_visible() {
+                    self.draw(&tile)?;
+                }
+            }
+        }
+
+        // Draw characters
+        for c in inner.scene.characters() {
+            if true {
+                self.draw(c)?;
+            }
+        }
 
         Ok(())
     }
@@ -185,12 +200,6 @@ impl Engine {
 
 /// The data contained in our engine.
 pub struct InnerEngine {
-    /// The x position of the drawing.
-    pub x: f64,
-
-    /// The y position of the drawing.
-    pub y: f64,
-
     /// The scene of the engine.
     pub scene: Scene,
 
@@ -204,13 +213,22 @@ pub struct InnerEngine {
 impl InnerEngine {
     /// Initializes the engine.
     pub fn new(document: &web_sys::Document, scene: Scene) -> Result<InnerEngine> {
-        log!("sup");
         Ok(InnerEngine {
-            x: 0.0,
-            y: 0.0,
             scene,
             keyboard: Keyboard::new(document)?,
             textures: TextureManager::new()?,
         })
     }
 }
+
+/// Our custom drawable trait.
+pub trait Drawable {
+    /// Returns the texture of the drawable.
+    fn texture(&self) -> Texture;
+
+    /// Returns the coordinates to use on the texture.
+    fn texture_rect(&self) -> Bbox;
+
+    /// Returns the position on which the drawable should be drawn.
+    fn position(&self) -> Vector;
+}

src/engine/scene.rs

@@ -108,7 +108,7 @@ impl Scene {
                         c.ground_collision();
                     }
 
-                    c.die();
+                    // c.die();
                 } else {
                     c.fall_off();
                 }

src/engine/texture.rs

@@ -8,6 +8,7 @@ use wasm_bindgen::JsCast;
 
 use web_sys::HtmlImageElement;
 
+use crate::engine::bbox::Bbox;
 use crate::{log, Result};
 
 /// The size of sprites.
@@ -68,28 +69,61 @@ impl Image {
     /// Renders the image on a context.
     pub fn render(
         &self,
-        x: f64,
-        y: f64,
+        source: Bbox,
+        dest: Bbox,
         context: &web_sys::CanvasRenderingContext2d,
     ) -> Result<()> {
-        context.draw_image_with_html_image_element(&self.inner.borrow().inner, x, y)?;
+        context.draw_image_with_html_image_element_and_sw_and_sh_and_dx_and_dy_and_dw_and_dh(
+            &self.inner.borrow().inner,
+            source.position.x,
+            source.position.y,
+            source.size.x,
+            source.size.y,
+            dest.position.x,
+            dest.position.y,
+            dest.size.x,
+            dest.size.y,
+        )?;
 
         Ok(())
     }
 }
 
+/// The list of all our textures.
+#[derive(Copy, Clone)]
+pub enum Texture {
+    /// The main character sprite.
+    Rusty,
+
+    /// The sprites from the overworld.
+    Overworld,
+}
+
 /// Our texture manager.
 ///
 /// It holds all our resources.
 pub struct TextureManager {
     /// The main character sprite.
     pub rusty: Image,
+
+    /// The sprites from the overworld.
+    pub overworld: Image,
 }
 
 impl TextureManager {
     /// Creates and start the loading of all our textures.
     pub fn new() -> Result<TextureManager> {
-        let rusty = Image::new("static/textures/rusty.png")?;
-        Ok(TextureManager { rusty })
+        Ok(TextureManager {
+            rusty: Image::new("static/textures/rusty.png")?,
+            overworld: Image::new("static/textures/overworld.png")?,
+        })
+    }
+
+    /// Returns the image corresponding to a certain texture.
+    pub fn get(&self, texture: Texture) -> &Image {
+        match texture {
+            Texture::Rusty => &self.rusty,
+            Texture::Overworld => &self.overworld,
+        }
     }
 }

src/engine/vector.rs

@@ -1,5 +1,6 @@
 //! A module for basic maths.
 
+use std::fmt;
 use std::ops::{Add, AddAssign, Mul, MulAssign, Sub, SubAssign};
 
 /// A 2 dimensional vector.
@@ -79,3 +80,9 @@ impl Mul<Vector> for f64 {
         }
     }
 }
+
+impl fmt::Display for Vector {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        write!(fmt, "({}, {})", self.x, self.y)
+    }
+}