Initial commit of first 2 chapters.

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Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "rust_roguelike_tutorial"
+version = "0.1.0"
+authors = ["Herbert Wolverson <herberticus@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rltk = { git = "https://github.com/thebracket/rltk_rs" }
+specs = "0.15.0"
+specs-derive = "0.4.0"
+
+[workspace]
+members = [ "chapter-01-hellorust", "chapter-02-helloecs" ]

book/.gitignore

@@ -0,0 +1 @@
+book

book/book.toml

@@ -0,0 +1,6 @@
+[book]
+authors = ["Herbert Wolverson"]
+language = "en"
+multilingual = false
+src = "src"
+title = "Roguelike Tutorial - In Rust"

book/src/SUMMARY.md

@@ -0,0 +1,4 @@
+# Summary
+
+- [Chapter 1 - Hello Rust](./chapter_1.md)
+- [Chapter 2 - Entities & Components](./chapter_2.md)

book/src/chapter_1.md

@@ -0,0 +1,96 @@
+# Chapter 1 : Hello Rust
+
+This tutorial will get you started with Rust development, and RLTK - The *RogueLike Took Kit* - we'll be using to provide console output.
+
+## Getting Rust
+
+On most platforms, [rustup](https://rustup.rs/) is enough to get you a working Rust toolchain. On Windows, it's an easy download - and you get a working Rust environment when it is done. On Unix-derived systems (such as Linux, and OS X) it provides some command-line instructions to install the environment.
+
+Once it is installed, verify that it is working by typing `cargo --version` on your command line. You should see something like `cargo 1.36.0 (c4fcfb725 2019-05-15)` (the version will change over time).
+
+## Getting comfortable with a development environment
+
+You want to make a directory/folder for your development work. You'll also want a text editor. I'm a fan of [Visual Studio Code](https://code.visualstudio.com/), but you can use whatever you are comfortable with. If you do use Visual Studio Code, I recommend the following extensions:
+
+* `Better TOML` : makes reading toml files nice; Rust uses them a lot
+* `C/C++` : uses the C++ debugger system to debug Rust code
+* `Rust (rls)` : not the fastest, but thorough syntax highlighting and error checking as you go.
+
+Once you've picked your environment, open up an editor and navigate to your new folder (in VS Code, `File -> Open Folder` and choose the folder).
+
+## Creating a project
+
+Now that you are in your chosen folder, you want to open a terminal/console window there. In VS Code, this is `Terminal -> New Terminal`. Otherwise, open a command line as normal and `cd` to your folder.
+
+Rust has a built-in package manager called `cargo`. Cargo can make project templates for you! So to create your new project, type `cargo init hellorust`. After a moment, a new folder has appeared in your project - titled `hellorust`.
+It will contain the following files and directories:
+
+```
+src\main.rs
+Cargo.toml
+.gitignore
+```
+
+These are:
+
+* The `.gitignore` is handy if you are using git - it stops you from accidentally putting files into the git repository that don't need to be there. If you aren't using git, you can ignore it.
+* `src\main.rs` is a simple Rust "hello world" program source.
+* `Cargo.toml` defines your project, and how it should be built.
+
+Go ahead and type `cargo run`. After some compilation, if everything is working you will be greeted with "Hello World" on your terminal.
+
+## Setup Cargo.toml
+
+The auto-generated Cargo file will look like this:
+
+```toml
+[package]
+name = "helloworld"
+version = "0.1.0"
+authors = ["Your name if it knows it"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+```
+
+Go ahead and make sure that your name is correct! Next, we're going to ask Cargo to use RLTK - the Roguelike toolkit library. Rust makes this very easy. Adjust the `dependencies` section to look like this:
+
+```toml
+[dependencies]
+rltk = { git = "https://github.com/thebracket/rltk_rs" }
+```
+
+We're telling it that the package is named `rltk` and giving it a Github location to pull from.
+
+## Hello Rust - RLTK Style!
+
+Go ahead and replace the contents of `src\main.rs` with:
+
+```rust
+extern crate rltk;
+use rltk::{Rltk, GameState, Console};
+
+struct State {}
+impl GameState for State {
+    fn tick(&mut self, ctx : &mut Rltk) {
+        ctx.cls();
+        ctx.print(1, 1, "Hello Rust World");
+    }
+}
+
+fn main() {
+    let context = Rltk::init_simple8x8(80, 50, "Hello Rust World", "resources");
+    let gs = State{ };
+    rltk::main_loop(context, gs);
+}
+```
+
+Now create a new folder called `resources`. RLTK needs a few files to run, and this is where we put them. Download **WARNING - INSERT DOWNLOAD LINK TO ZIP HERE**, and unzip it into this folder. Be careful to have `resources/backing.fs` (etc.) and not `resources/resources/backing.fs`.
+
+Save, and go back to the terminal. Type `cargo run`, and you will be greeted with a console window showing `Hello Rust`.
+
+## Playing with the tutorials
+
+TODO: Git glone, and how to build and use the tutorials in this package.

chapter-01-hellorust/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "chapter-01-hellorust"
+version = "0.1.0"
+authors = ["Herbert Wolverson <herberticus@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rltk = { git = "https://github.com/thebracket/rltk_rs" }
+

chapter-01-hellorust/src/main.rs

@@ -0,0 +1,16 @@
+extern crate rltk;
+use rltk::{Rltk, GameState, Console};
+
+struct State {}
+impl GameState for State {
+    fn tick(&mut self, ctx : &mut Rltk) {
+        ctx.cls();
+        ctx.print(1, 1, "Hello Rust World");
+    }
+}
+
+fn main() {
+    let context = Rltk::init_simple8x8(80, 50, "Hello Rust World", "../resources");
+    let gs = State{ };
+    rltk::main_loop(context, gs);
+}

chapter-02-helloecs/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "chapter-02-helloecs"
+version = "0.1.0"
+authors = ["Herbert Wolverson <herberticus@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rltk = { git = "https://github.com/thebracket/rltk_rs" }
+specs = "0.15.0"
+specs-derive = "0.4.0"

chapter-02-helloecs/src/main.rs

@@ -0,0 +1,129 @@
+extern crate rltk;
+use rltk::{Console, GameState, Rltk, RGB, VirtualKeyCode};
+extern crate specs;
+use specs::prelude::*;
+#[macro_use]
+extern crate specs_derive;
+
+#[derive(Component)]
+struct Position {
+    x: i32,
+    y: i32,
+}
+
+#[derive(Component)]
+struct Renderable {
+    glyph: u8,
+    fg: RGB,
+    bg: RGB,
+}
+
+#[derive(Component)]
+struct LeftMover {}
+ 
+#[derive(Component, Debug)]
+struct Player {}
+
+struct State {
+    ecs: World,
+    systems: Dispatcher<'static, 'static>
+}
+
+fn try_move_player(delta_x: i32, delta_y: i32, ecs: &mut World) {
+    let mut positions = ecs.write_storage::<Position>();
+    let mut players = ecs.write_storage::<Player>();
+
+    for (_player, pos) in (&mut players, &mut positions).join() {
+        pos.x += delta_x;
+        pos.y += delta_y;
+
+        if pos.x < 0 { pos.x = 0; }
+        if pos.x > 79 { pos.y = 79; }
+        if pos.y < 0 { pos.y = 0; }
+        if pos.y > 49 { pos.y = 49; }
+    }
+}
+
+fn player_input(gs: &mut State, ctx: &mut Rltk) {
+    // Player movement
+    match ctx.key {
+        None => {} // Nothing happened
+        Some(key) => match key {
+            VirtualKeyCode::Left => try_move_player(-1, 0, &mut gs.ecs),
+            VirtualKeyCode::Right => try_move_player(1, 0, &mut gs.ecs),
+            VirtualKeyCode::Up => try_move_player(0, -1, &mut gs.ecs),
+            VirtualKeyCode::Down => try_move_player(0, 1, &mut gs.ecs),
+            _ => {}
+        },
+    }
+}
+
+impl GameState for State {
+    fn tick(&mut self, ctx : &mut Rltk) {
+        ctx.cls();
+
+        player_input(self, ctx);
+        self.systems.dispatch(&self.ecs);
+
+        let positions = self.ecs.read_storage::<Position>();
+        let renderables = self.ecs.read_storage::<Renderable>();
+
+        for (pos, render) in (&positions, &renderables).join() {
+            ctx.set(pos.x, pos.y, render.fg, render.bg, render.glyph);
+        }
+    }
+}
+
+struct LeftWalker {}
+
+impl<'a> System<'a> for LeftWalker {
+    type SystemData = (ReadStorage<'a, LeftMover>, 
+                        WriteStorage<'a, Position>);
+
+    fn run(&mut self, (lefty, mut pos) : Self::SystemData) {
+        for (_lefty,pos) in (&lefty, &mut pos).join() {
+            pos.x -= 1;
+            if pos.x < 0 { pos.x = 79; }
+        }
+    }
+}
+
+fn main() {
+    let context = Rltk::init_simple8x8(80, 50, "Hello Rust World", "../resources");
+    let mut gs = State {
+        ecs: World::new(),
+        systems : DispatcherBuilder::new()
+            .with(LeftWalker{}, "left_walker", &[])
+            .build()
+    };
+    gs.ecs.register::<Position>();
+    gs.ecs.register::<Renderable>();
+    gs.ecs.register::<LeftMover>();
+    gs.ecs.register::<Player>();
+
+    gs.ecs
+        .create_entity()
+        .with(Position { x: 40, y: 25 })
+        .with(Renderable {
+            glyph: rltk::to_cp437('@'),
+            fg: RGB::named(rltk::YELLOW),
+            bg: RGB::named(rltk::BLACK),
+        })
+        .with(Player{})
+        .build();
+
+    for i in 0..10 {
+        gs.ecs
+        .create_entity()
+        .with(Position { x: i * 7, y: 20 })
+        .with(Renderable {
+            glyph: rltk::to_cp437('☺'),
+            fg: RGB::named(rltk::RED),
+            bg: RGB::named(rltk::BLACK),
+        })
+        .with(LeftMover{})
+        .build();
+    }
+
+    rltk::main_loop(context, gs);
+}

resources/backing.fs

@@ -0,0 +1,12 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D screenTexture;
+
+void main()
+{
+    vec3 col = texture(screenTexture, TexCoords).rgb;
+    FragColor = vec4(col, 1.0);
+}

resources/backing.vs

@@ -0,0 +1,11 @@
+#version 330 core
+layout (location = 0) in vec2 aPos;
+layout (location = 1) in vec2 aTexCoords;
+
+out vec2 TexCoords;
+
+void main()
+{
+    TexCoords = aTexCoords;
+    gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0);
+}

resources/console_no_bg.fs

@@ -0,0 +1,17 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec3 ourColor;
+in vec2 TexCoord;
+in vec3 ourBackground;
+
+// texture sampler
+uniform sampler2D texture1;
+
+void main()
+{
+    vec4 original = texture(texture1, TexCoord);
+    if (original.r < 0.1f || original.g < 0.1f || original.b < 0.1f) discard;
+    vec4 fg = original * vec4(ourColor, 1.f);
+	FragColor = fg;
+}

resources/console_no_bg.vs

@@ -0,0 +1,17 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aColor;
+layout (location = 2) in vec3 bColor;
+layout (location = 3) in vec2 aTexCoord;
+
+out vec3 ourColor;
+out vec3 ourBackground;
+out vec2 TexCoord;
+
+void main()
+{
+	gl_Position = vec4(aPos, 1.0);
+	ourColor = aColor;
+	ourBackground = bColor;
+	TexCoord = vec2(aTexCoord.x, aTexCoord.y);
+}

resources/console_with_bg.fs

@@ -0,0 +1,16 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec3 ourColor;
+in vec2 TexCoord;
+in vec3 ourBackground;
+
+// texture sampler
+uniform sampler2D texture1;
+
+void main()
+{
+    vec4 original = texture(texture1, TexCoord);
+    vec4 fg = original.r > 0.1f || original.g > 0.1f || original.b > 0.1f ? original * vec4(ourColor, 1.f) : vec4(ourBackground, 1.f);
+	FragColor = fg;
+}

resources/console_with_bg.vs

@@ -0,0 +1,17 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aColor;
+layout (location = 2) in vec3 bColor;
+layout (location = 3) in vec2 aTexCoord;
+
+out vec3 ourColor;
+out vec3 ourBackground;
+out vec2 TexCoord;
+
+void main()
+{
+	gl_Position = vec4(aPos, 1.0);
+	ourColor = aColor;
+	ourBackground = bColor;
+	TexCoord = vec2(aTexCoord.x, aTexCoord.y);
+}

resources/scanlines.fs

@@ -0,0 +1,26 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D screenTexture;
+uniform vec3 screenSize;
+uniform bool screenBurn;
+
+void main()
+{
+    vec3 col = texture(screenTexture, TexCoords).rgb;
+    float scanLine = mod(gl_FragCoord.y, 2.0) * 0.25;
+    vec3 scanColor = col.rgb - scanLine;
+
+    if (col.r < 0.1f && col.g < 0.1f && col.b < 0.1f) {
+        if (screenBurn) {
+            float dist = (1.0 - distance(vec2(gl_FragCoord.x / screenSize.x, gl_FragCoord.y / screenSize.y), vec2(0.5,0.5))) * 0.2;
+            FragColor = vec4(0.0, dist, dist, 1.0);
+        } else {
+            FragColor = vec4(0.0, 0.0, 0.0, 1.0);
+        }
+    } else {
+        FragColor = vec4(scanColor, 1.0);
+    }
+}

resources/scanlines.vs

@@ -0,0 +1,11 @@
+#version 330 core
+layout (location = 0) in vec2 aPos;
+layout (location = 1) in vec2 aTexCoords;
+
+out vec2 TexCoords;
+
+void main()
+{
+    TexCoords = aTexCoords;
+    gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0);
+}

src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("You probably want to go into one of the chapter-XY-name folders and run that!");
+}