Room generation
I'm too tired to write good code today, but this sorta works I guess
This commit is contained in:
parent
176a0f52c5
commit
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80
Cargo.lock
generated
80
Cargo.lock
generated
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@ -18,7 +18,29 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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name = "dungeon_game"
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version = "0.1.0"
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dependencies = [
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"grid",
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"pancurses",
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"rand",
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]
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[[package]]
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name = "getrandom"
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version = "0.2.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
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dependencies = [
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"cfg-if",
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"libc",
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"wasi",
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]
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[[package]]
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name = "grid"
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version = "0.6.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bed7999ee197fb0a5736c294af0289caf9681fafabd57ea7fa6af61bf3a19eec"
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dependencies = [
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"no-std-compat",
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]
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[[package]]
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@ -47,6 +69,12 @@ dependencies = [
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"pkg-config",
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]
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[[package]]
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name = "no-std-compat"
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version = "0.4.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b93853da6d84c2e3c7d730d6473e8817692dd89be387eb01b94d7f108ecb5b8c"
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[[package]]
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name = "pancurses"
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version = "0.17.0"
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@ -76,6 +104,58 @@ version = "0.3.24"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "58893f751c9b0412871a09abd62ecd2a00298c6c83befa223ef98c52aef40cbe"
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[[package]]
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name = "ppv-lite86"
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version = "0.2.15"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ed0cfbc8191465bed66e1718596ee0b0b35d5ee1f41c5df2189d0fe8bde535ba"
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[[package]]
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name = "rand"
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version = "0.8.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
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dependencies = [
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"libc",
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"rand_chacha",
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"rand_core",
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"rand_hc",
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]
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[[package]]
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name = "rand_chacha"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
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dependencies = [
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"ppv-lite86",
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"rand_core",
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]
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[[package]]
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name = "rand_core"
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version = "0.6.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
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dependencies = [
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"getrandom",
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]
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[[package]]
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name = "rand_hc"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d51e9f596de227fda2ea6c84607f5558e196eeaf43c986b724ba4fb8fdf497e7"
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dependencies = [
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"rand_core",
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]
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[[package]]
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name = "wasi"
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version = "0.10.2+wasi-snapshot-preview1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
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[[package]]
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name = "winapi"
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version = "0.3.9"
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@ -7,3 +7,5 @@ edition = "2021"
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[dependencies]
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pancurses = "0.17.0"
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rand = "0.8.4"
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grid = "0.6.0"
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@ -1,5 +1,7 @@
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use pancurses::Window;
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use crate::rooms;
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/// A dungeon root.
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pub struct Dungeon {
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main_branch: DungeonBranch,
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@ -27,7 +29,7 @@ pub struct DungeonLevel {
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tiles: [[DungeonTile; LEVEL_SIZE.0]; LEVEL_SIZE.1],
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}
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/// The smallest possible independent location in the dungeon,
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/// The smallest measurable independent location in the dungeon,
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/// corresponding to a single character on the screen.
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#[derive(Debug, Clone, Copy)]
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pub enum DungeonTile {
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@ -41,7 +43,8 @@ impl DungeonLevel {
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/// configuration.
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pub fn new(cfg: &BranchConfig) -> Self {
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Self {
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tiles: [[DungeonTile::Floor; LEVEL_SIZE.0]; LEVEL_SIZE.1],
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// tiles: [[DungeonTile::Floor; LEVEL_SIZE.0]; LEVEL_SIZE.1],
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tiles: rooms::generate_level(30, &mut rand::thread_rng()),
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}
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}
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@ -57,6 +60,8 @@ impl DungeonLevel {
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});
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}
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}
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// Leave the cursor at the lower-left.
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win.mv(0, 0);
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}
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}
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@ -2,6 +2,7 @@ use game::{BranchConfig, DungeonLevel};
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use pancurses::{endwin, initscr};
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mod game;
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mod rooms;
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fn main() {
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let window = initscr();
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114
src/rooms.rs
Normal file
114
src/rooms.rs
Normal file
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@ -0,0 +1,114 @@
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//! Generator for levels that consist of a number of rooms connected
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//! by hallways.
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use std::ops::Range;
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use grid::Grid;
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use rand::Rng;
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use crate::game::{DungeonTile, LEVEL_SIZE};
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/// Generates a grid of the given size containing rooms connected by
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/// passages.
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pub fn generate(n_rooms: usize, rng: &mut impl Rng, size: (usize, usize)) -> Grid<DungeonTile> {
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let mut grid = Grid::init(size.1, size.0, DungeonTile::Wall);
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let rooms = gen_room_bounds(n_rooms, size, rng); // TODO: arg order
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for room in rooms {
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for (x, y) in room.tiles() {
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grid[y][x] = DungeonTile::Floor;
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}
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}
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grid
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}
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/// Generates a grid of the statically-known level size.
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pub fn generate_level(
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n_rooms: usize,
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rng: &mut impl Rng,
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) -> [[DungeonTile; LEVEL_SIZE.0]; LEVEL_SIZE.1] {
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// FIXME: This function is atrocious. We do an allocation here
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// when we theoretically doesn't need to (we get a heap-allocated
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// Grid back, when we know statically that it's LEVEL_SIZE so we
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// could allocate it on the stack)...
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let grid = generate(n_rooms, rng, LEVEL_SIZE);
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// ...and then we use a pointless default of DungeonTile::Floor
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// here then copy in the real data from `grid`.
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let mut data = [[DungeonTile::Floor; LEVEL_SIZE.0]; LEVEL_SIZE.1];
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for (value, slot) in Iterator::zip(
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grid.into_vec().into_iter(),
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data.iter_mut().flat_map(|elem| elem.iter_mut()),
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) {
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*slot = value;
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}
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data
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}
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/// The bounding box of a room.
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struct RoomBounds {
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ul_corner: (usize, usize),
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size: (usize, usize),
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}
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impl RoomBounds {
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/// Iterates over the tiles contained within the room.
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pub fn tiles(&self) -> impl Iterator<Item = (usize, usize)> {
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let (x_min, y_min) = self.ul_corner;
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let (x_max, y_max) = (x_min + self.size.0, y_min + self.size.1);
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(y_min..y_max).flat_map(move |y| (x_min..x_max).map(move |x| (x, y)))
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}
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/// Returns whether the two rooms are overlapping.
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pub fn overlapping(&self, other: &Self) -> bool {
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fn range_overlapping(a: Range<usize>, b: Range<usize>) -> bool {
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if a.start > b.start {
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range_overlapping(b, a)
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} else {
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a.end > b.start
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}
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}
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!range_overlapping(
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self.ul_corner.0..self.ul_corner.0 + self.size.0,
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other.ul_corner.0..other.ul_corner.0 + other.size.0,
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) && !range_overlapping(
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self.ul_corner.1..self.ul_corner.1 + self.size.1,
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other.ul_corner.1..other.ul_corner.1 + other.size.1,
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)
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}
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}
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/// The possible sizes of a room, on both the x and y axes.
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const ROOM_SIZE_LIMITS: Range<usize> = 4..8;
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/// Generates bounds for a set of at most `n_rooms` nonoverlapping
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/// rooms within a region of size `region_size`.
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fn gen_room_bounds(
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n_rooms: usize,
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region_size: (usize, usize),
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rng: &mut impl Rng,
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) -> Vec<RoomBounds> {
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let mut v: Vec<RoomBounds> = Vec::new();
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for _ in 0..n_rooms {
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let size = (
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rng.gen_range(ROOM_SIZE_LIMITS),
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rng.gen_range(ROOM_SIZE_LIMITS),
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);
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let ul_corner = (
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rng.gen_range(0..region_size.0 - size.0),
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rng.gen_range(0..region_size.1 - size.1),
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);
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let new_room = RoomBounds { ul_corner, size };
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if v.iter().all(|room| !room.overlapping(&new_room)) {
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v.push(new_room)
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}
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}
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v
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}
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