76 lines
2.6 KiB
Rust
76 lines
2.6 KiB
Rust
use super::{BuilderMap, Map, MetaMapBuilder, TileType};
|
|
use rltk::RandomNumberGenerator;
|
|
mod common;
|
|
use common::*;
|
|
mod constraints;
|
|
use constraints::*;
|
|
mod solver;
|
|
use solver::*;
|
|
|
|
/// Provides a map builder using the Wave Function Collapse algorithm.
|
|
pub struct WaveFunctionCollapseBuilder {}
|
|
|
|
impl MetaMapBuilder for WaveFunctionCollapseBuilder {
|
|
fn build_map(&mut self, rng: &mut rltk::RandomNumberGenerator, build_data: &mut BuilderMap) {
|
|
self.build(rng, build_data);
|
|
}
|
|
}
|
|
|
|
impl WaveFunctionCollapseBuilder {
|
|
/// Constructor for wfc.
|
|
#[allow(dead_code)]
|
|
pub fn new() -> Box<WaveFunctionCollapseBuilder> {
|
|
Box::new(WaveFunctionCollapseBuilder {})
|
|
}
|
|
|
|
fn build(&mut self, rng: &mut RandomNumberGenerator, build_data: &mut BuilderMap) {
|
|
const CHUNK_SIZE: i32 = 8;
|
|
build_data.take_snapshot();
|
|
|
|
let patterns = build_patterns(&build_data.map, CHUNK_SIZE, true, true);
|
|
let constraints = patterns_to_constraints(patterns, CHUNK_SIZE);
|
|
self.render_tile_gallery(&constraints, CHUNK_SIZE, build_data);
|
|
|
|
build_data.map = Map::new(build_data.map.depth, build_data.map.width, build_data.map.height);
|
|
loop {
|
|
let mut solver = Solver::new(constraints.clone(), CHUNK_SIZE, &build_data.map);
|
|
while !solver.iteration(&mut build_data.map, rng) {
|
|
build_data.take_snapshot();
|
|
}
|
|
build_data.take_snapshot();
|
|
if solver.possible {
|
|
break;
|
|
} // If it has hit an impossible condition, try again
|
|
}
|
|
build_data.spawn_list.clear();
|
|
}
|
|
|
|
fn render_tile_gallery(&mut self, constraints: &[MapChunk], chunk_size: i32, build_data: &mut BuilderMap) {
|
|
build_data.map = Map::new(0, build_data.width, build_data.height);
|
|
let mut counter = 0;
|
|
let mut x = 1;
|
|
let mut y = 1;
|
|
while counter < constraints.len() {
|
|
render_pattern_to_map(&mut build_data.map, &constraints[counter], chunk_size, x, y);
|
|
|
|
x += chunk_size + 1;
|
|
if x + chunk_size > build_data.map.width {
|
|
// Move to the next row
|
|
x = 1;
|
|
y += chunk_size + 1;
|
|
|
|
if y + chunk_size > build_data.map.height {
|
|
// Move to the next page
|
|
build_data.take_snapshot();
|
|
build_data.map = Map::new(0, build_data.width, build_data.height);
|
|
|
|
x = 1;
|
|
y = 1;
|
|
}
|
|
}
|
|
|
|
counter += 1;
|
|
}
|
|
build_data.take_snapshot();
|
|
}
|
|
}
|