diff --git a/petri/src/lib.rs b/petri/src/lib.rs index 27e7b07..bb8f465 100644 --- a/petri/src/lib.rs +++ b/petri/src/lib.rs @@ -19,6 +19,10 @@ pub struct Dish { cache: Vec, #[serde(skip)] match_cache: Vec, + #[serde(skip)] + max_rule_width: usize, + #[serde(skip)] + max_rule_height: usize, } #[derive(Debug)] @@ -188,6 +192,22 @@ impl Rule { self.base.width } + fn max_width(&self) -> usize { + self.variants + .iter() + .map(|r| r.width) + .max() + .unwrap_or_default() + } + + fn max_height(&self) -> usize { + self.variants + .iter() + .map(|r| r.height) + .max() + .unwrap_or_default() + } + pub fn resize(&mut self, params: ResizeParam) { let (dw, dh, dx, dy) = params; @@ -369,7 +389,7 @@ impl Dish { rule.generate_variants() } - Self { + let mut new = Self { world: World { chunk: Chunk::new().with_random_ones(), }, @@ -385,16 +405,25 @@ impl Dish { }], cache: Vec::new(), match_cache: Vec::new(), - } + max_rule_height: 1, + max_rule_width: 1, + }; + new.update_all_rules(); + new } pub fn fill(&mut self, cell: Cell) { self.world.fill(cell); + self.rebuild_cache(); } pub fn update_all_rules(&mut self) { + self.max_rule_height = 1; + self.max_rule_width = 1; for rule in &mut self.rules { rule.generate_variants(); + self.max_rule_height = self.max_rule_height.max(rule.max_height()); + self.max_rule_width = self.max_rule_width.max(rule.max_width()); } self.rebuild_cache(); } @@ -430,7 +459,7 @@ impl Dish { for px in -border_x..(CHUNK_SIZE as isize) { for py in -border_y..(CHUNK_SIZE as isize) { - if self.world.subrule_matches(px, py, &rule, &self.groups) { + if self.world.subrule_matches(px, py, rule, &self.groups) { matches.push((px, py)); } } @@ -444,6 +473,7 @@ impl Dish { } pub fn rebuild_cache(&mut self) { + println!("rebuilding cache"); self.cache.clear(); for rule_index in 0..self.rules.len() { self.add_cache_single_rule(rule_index); @@ -485,7 +515,7 @@ impl Dish { for px in (x.wrapping_sub_unsigned(border_x))..(x.wrapping_add_unsigned(width)) { for py in (y.wrapping_sub_unsigned(border_y))..(y.wrapping_add_unsigned(height)) { - if self.world.subrule_matches(px, py, &rule, &self.groups) { + if self.world.subrule_matches(px, py, rule, &self.groups) { cache.matches.push((px, py)); } } @@ -503,7 +533,8 @@ impl Dish { .collect(); } - pub fn fire_once(&mut self) { + /// picks a random match from any rule with at least one match + pub fn apply_one_match(&mut self) { if self.match_cache.is_empty() { return; } @@ -521,6 +552,86 @@ impl Dish { self.update_cache(x, y, width, height); } + /// Picks a random point and applies a random match at that position, if any exist. + /// The random point can be outside the world bounds, to catch cases where the root (top-left) of a match is outside the bounds. + /// TODO make sure max_rule_[width/height] is up to date after each rule.generate_variants + pub fn fire_blindly_cached(&mut self) { + let border_x = self.max_rule_width - 1; + let border_y = self.max_rule_height - 1; + let x = ((random::() % (CHUNK_SIZE + border_x)) as isize) + .wrapping_sub_unsigned(border_x); + let y = ((random::() % (CHUNK_SIZE + border_y)) as isize) + .wrapping_sub_unsigned(border_y); + + let matches = self.get_matches_at_point(x, y); + if matches.is_empty() { + return; + } + let i = random::() % matches.len(); + let (rule_index, variant_index) = matches[i]; + self.apply_rule(x, y, rule_index, variant_index); + let rule = &self.rules[rule_index].variants[variant_index]; + let width = rule.width; + let height = rule.height; + self.update_cache(x, y, width, height); + } + + /// Picks a random point and applies a random match that overlaps with it, if any exist. + /// TODO benchmark and only keep one of try_one_position_overlapped and fire_blindly_cached + pub fn try_one_position_overlapped(&mut self) { + let x = (random::() % CHUNK_SIZE) as isize; + let y = (random::() % CHUNK_SIZE) as isize; + + let matches = self.get_matches_containing_point(x, y); + if matches.is_empty() { + return; + } + let i = random::() % matches.len(); + let (x, y, rule_index, variant_index) = matches[i]; + self.apply_rule(x, y, rule_index, variant_index); + let rule = &self.rules[rule_index].variants[variant_index]; + let width = rule.width; + let height = rule.height; + self.update_cache(x, y, width, height); + } + + fn get_matches_at_point(&self, x: isize, y: isize) -> Vec<(usize, usize)> { + self.cache + .iter() + .flat_map(|rule| { + rule.matches.iter().filter_map(|&(mx, my)| { + (mx == x && my == y).then_some((rule.rule, rule.variant)) + }) + }) + .collect() + } + + fn get_matches_containing_point( + &self, + x: isize, + y: isize, + ) -> Vec<(isize, isize, usize, usize)> { + fn contains((x, y, w, h): (isize, isize, usize, usize), (px, py): (isize, isize)) -> bool { + px >= x + && py >= y && px < x.saturating_add_unsigned(w) + && py < y.saturating_add_unsigned(h) + } + self.cache + .iter() + .flat_map(|rule| { + let variant = &self.rules[rule.rule].variants[rule.variant]; + let (w, h) = (variant.width, variant.height); + rule.matches.iter().filter_map(move |&(mx, my)| { + if contains((mx, my, w, h), (x, y)) { + Some((mx, my, rule.rule, rule.variant)) + } else { + None + } + }) + }) + .collect() + } + pub fn fire_blindly(&mut self) { if self.rules.is_empty() { return; @@ -555,7 +666,8 @@ impl Dish { let rule = &self.rules[rule_index]; let variant = &rule.variants[variant_index].clone(); - if rule.failrate > random() { + if rule.failrate != 0 && rule.failrate > random() { + // TODO don't update cache after this return; } diff --git a/uscope/src/main.rs b/uscope/src/main.rs index 9e9d57a..4b66657 100644 --- a/uscope/src/main.rs +++ b/uscope/src/main.rs @@ -29,7 +29,7 @@ fn main() { struct UScope { dish: Dish, brush: Cell, - speed: usize, + speed: u32, show_grid: bool, } @@ -37,7 +37,7 @@ impl UScope { fn new(_cc: &eframe::CreationContext<'_>) -> Self { Self { dish: Dish::new(), - speed: 1, + speed: 50, show_grid: false, brush: Cell(1), } @@ -74,14 +74,14 @@ impl eframe::App for UScope { fn update(&mut self, ctx: &eframe::egui::Context, _frame: &mut eframe::Frame) { ctx.request_repaint(); for _ in 0..self.speed { - self.dish.fire_once(); + self.dish.try_one_position_overlapped(); } SidePanel::left("left_panel") .min_width(100.) .show(ctx, |ui| { ui.heading("Simulation"); ui.label("speed"); - ui.add(Slider::new(&mut self.speed, 0..=15).clamp_to_range(false)); + ui.add(Slider::new(&mut self.speed, 0..=500).clamp_to_range(false)); ui.checkbox(&mut self.show_grid, "show grid"); if ui.button("regenerate rules and cache").clicked() { self.dish.update_all_rules();