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Map generator working in wasm demo

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klangner 2020-09-13 13:26:36 +02:00
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14
README.md
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@ -6,16 +6,9 @@
Generate procedural maps for games.
This library is based on the code from the [Roguelike tutorial](https://github.com/thebracket/rustrogueliketutorial).
I highly recommend it for learning how to write Roguelike in Rust.
## Demo app
If you want to check how the maps look like, then:
* Clone this rep
* Go to the demo folder
* Run demo app (`cargo run`)
Check [demo app](https://klangner.github.io/mapgen.rs/)
## Features
@ -80,6 +73,11 @@ let map = MapBuilder::new(Box::new(CellularAutomataGen::new(80, 50)))
For more information check the [doc](https://docs.rs/mapgen)
This library is based on the code from the [Roguelike tutorial](https://github.com/thebracket/rustrogueliketutorial).
I highly recommend it for learning how to write Roguelike in Rust.
# License
Licensed under either of

8
demo/Cargo.toml
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@ -2,13 +2,19 @@
name = "mapgen-demo"
version = "0.1.1"
authors = ["Krzysztof Langner <klangner@gmail.com>"]
description = "Map generator demo"
license = "MIT OR Apache-2.0"
repository = "https://github.com/klangner/mapgen.rs"
edition = "2018"
[lib]
crate-type = ["cdylib"]
[dependencies]
wasm-bindgen = "0.2.68"
rand = { version = "0.7", features = ["wasm-bindgen"] }
mapgen = {path=".."}
wasm-bindgen = "0.2"
js-sys = "0.3"
[dependencies.web-sys]
version = "0.3.4"

201
demo/LICENSE-APACHE Normal file
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@ -0,0 +1,201 @@
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Copyright 2017 Krzysztof Langner
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58
demo/src/lib.rs
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@ -1,24 +1,46 @@
use wasm_bindgen::prelude::*;
use rand::prelude::*;
use js_sys::Date;
use mapgen::dungeon::{
MapBuilder,
map::Map,
cellular_automata::CellularAutomataGen,
starting_point::{AreaStartingPosition, XStart, YStart},
cull_unreachable::CullUnreachable,
distant_exit::DistantExit,
};
// Called when the wasm module is instantiated
#[wasm_bindgen(start)]
pub fn main() -> Result<(), JsValue> {
// Use `web_sys`'s global `window` function to get a handle on the global
// window object.
let window = web_sys::window().expect("no global `window` exists");
let document = window.document().expect("should have a document on window");
let body = document.body().expect("document should have a body");
// Manufacture the element we're gonna append
let val = document.create_element("p")?;
val.set_inner_html("Hello from Rust! 1");
body.append_child(&val)?;
Ok(())
#[wasm_bindgen]
pub struct World {
map: Map,
}
#[wasm_bindgen]
pub fn add(a: u32, b: u32) -> u32 {
a + b
}
impl World {
pub fn new(width: u32, height: u32) -> World {
let seed = Date::new_0().get_time() as u64;
let mut rng = StdRng::seed_from_u64(seed);
let map = MapBuilder::new(Box::new(CellularAutomataGen::new(width as usize, height as usize)))
.with(AreaStartingPosition::new(XStart::CENTER, YStart::CENTER))
.with(CullUnreachable::new())
.with(DistantExit::new())
.build_map_with_rng(&mut rng);
World { map }
}
pub fn width(&self) -> u32 {
self.map.width as u32
}
pub fn height(&self) -> u32 {
self.map.height as u32
}
}
// Called when the wasm module is instantiated
// #[wasm_bindgen(start)]
// pub fn main() -> Result<(), JsValue> {
// Ok(())
// }

16
src/dungeon/mod.rs
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@ -53,17 +53,14 @@ pub trait MapModifier {
pub struct MapBuilder {
generator: Box<dyn MapGenerator>,
modifiers: Vec<Box<dyn MapModifier>>,
rng: StdRng,
}
impl MapBuilder {
/// Create Map Builder with initial map generator
pub fn new(generator : Box<dyn MapGenerator>) -> MapBuilder {
let system_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Can't access system time");
MapBuilder {
generator,
modifiers: Vec::new(),
rng: StdRng::seed_from_u64(system_time.as_secs())
}
}
@ -72,16 +69,25 @@ impl MapBuilder {
self
}
/// Build map using random number seeded with system time
pub fn build_map(&mut self) -> Map {
let mut map = self.generator.generate_map(&mut self.rng);
let system_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Can't access system time");
let mut rng = StdRng::seed_from_u64(system_time.as_millis() as u64);
self.build_map_with_rng(&mut rng)
}
/// Build map using provided random number generator
pub fn build_map_with_rng(&mut self, rng: &mut StdRng) -> Map {
let mut map = self.generator.generate_map(rng);
// Build additional layers in turn
for modifier in self.modifiers.iter() {
map = modifier.modify_map(&mut self.rng, &map);
map = modifier.modify_map(rng, &map);
}
map
}
}
/// ------------------------------------------------------------------------------------------------