From: Tomas Wenström Date: Sun, 24 Jan 2021 14:09:56 +0000 (+0100) Subject: Refactor X-Git-Url: http://git.dolda2000.com/gitweb/?a=commitdiff_plain;h=602766547385196282a03bb13cfdb785f6446a7a;p=kaka%2Frust-sdl-test.git Refactor --- diff --git a/Cargo.lock b/Cargo.lock index dd144ee..d1d424f 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -1,6 +1,18 @@ # This file is automatically @generated by Cargo. # It is not intended for manual editing. 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dependencies = [ - "rand", + "noise", + "rand 0.6.5", "sdl2", "time", ] @@ -317,7 +643,7 @@ dependencies = [ "lazy_static", "libc", "num", - "rand", + "rand 0.6.5", "sdl2-sys", ] @@ -348,15 +674,15 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3" [[package]] name = "serde" -version = "1.0.119" +version = "1.0.120" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9bdd36f49e35b61d49efd8aa7fc068fd295961fd2286d0b2ee9a4c7a14e99cc3" +checksum = "166b2349061381baf54a58e4b13c89369feb0ef2eaa57198899e2312aac30aab" [[package]] name = "serde_derive" -version = "1.0.119" +version = "1.0.120" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "552954ce79a059ddd5fd68c271592374bd15cab2274970380c000118aeffe1cd" +checksum = "0ca2a8cb5805ce9e3b95435e3765b7b553cecc762d938d409434338386cb5775" dependencies = [ "proc-macro2", "quote", @@ -440,9 +766,9 @@ checksum = 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[dependencies.sdl2] version = "0.32.1" diff --git a/src/core/game.rs b/src/core/game.rs index 55bb80c..1bdaa8d 100644 --- a/src/core/game.rs +++ b/src/core/game.rs @@ -231,16 +231,6 @@ impl Object for Boll { self.vel += lvl.gravity; self.pos += self.vel; - if self.pos.y >= lvl.ground { - if self.bounces == 0 { - return Dead - } else { - self.bounces -= 1; - self.pos.y = lvl.ground; - self.vel.y = -self.vel.y; - } - } - let x = (self.pos.x / lvl.grid.cell_size as f64).min(lvl.grid.width as f64 - 1.0).max(0.0) as usize; let y = (self.pos.y / lvl.grid.cell_size as f64).min(lvl.grid.height as f64 - 1.0).max(0.0) as usize; if lvl.grid.cells[x][y] { diff --git a/src/core/level.rs b/src/core/level.rs index f0c6c0e..bab89e0 100644 --- a/src/core/level.rs +++ b/src/core/level.rs @@ -67,54 +67,97 @@ pub struct Grid { impl Grid { fn generate(iterations: u8) -> Grid { - let cell_size = 10; - let (width, height) = (1280 / cell_size, 600 / cell_size); - let mut cells = vec!(vec!(true; height); width); + let cell_size = 20; + let (width, height) = (2560 / cell_size, 1440 / cell_size); + + let mut grid = Grid { + cell_size, + width, + height, + cells: vec!(vec!(true; height); width), + }; + + // start with some noise +// grid.simplex_noise(); + grid.random_noise(); + // smooth with cellular automata + grid.smooth(iterations); +// grid.smooth_until_equilibrium(); + + // increase resolution + for _i in 0..1 { + grid = grid.subdivide(); + grid.smooth(iterations); + } + + grid + } + + #[allow(dead_code)] + fn simplex_noise(&mut self) { + use noise::{NoiseFn, OpenSimplex, Seedable}; + let noise = OpenSimplex::new().set_seed(std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap().as_secs() as u32); + self.set_each(|x, y| noise.get([x as f64 / 12.0, y as f64 / 12.0]) > 0.055, 1); + } + + #[allow(dead_code)] + fn random_noise(&mut self) { let mut rng = rand::thread_rng(); + self.set_each(|_x, _y| rng.gen_range(0, 100) > 55, 1); + } - // randomize - for x in 1..(width - 1) { - for y in 1..(height - 1) { - cells[x][y] = rng.gen_range(0, 100) > 55; + #[allow(dead_code)] + fn smooth(&mut self, iterations: u8) { + let distance = 1; + for _i in 0..iterations { + let mut next = vec!(vec!(true; self.height); self.width); + for x in distance..(self.width - distance) { + for y in distance..(self.height - distance) { + match Grid::neighbours(&self.cells, x, y, distance) { + n if n < 4 => next[x][y] = false, + n if n > 4 => next[x][y] = true, + _ => next[x][y] = self.cells[x][y] + } + } + } + if self.cells == next { + break; // exit early + } else { + self.cells = next; } } + } - // smooth - // let mut count = 0; - // loop { - // count += 1; - // println!("iteration {}", count); - for _i in 0..iterations { - let mut next = vec!(vec!(true; height); width); - for x in 1..(width - 1) { - for y in 1..(height - 1) { - match Grid::neighbours(&cells, x, y) { + #[allow(dead_code)] + fn smooth_until_equilibrium(&mut self) { + let distance = 1; + let mut count = 0; + loop { + count += 1; + let mut next = vec!(vec!(true; self.height); self.width); + for x in distance..(self.width - distance) { + for y in distance..(self.height - distance) { + match Grid::neighbours(&self.cells, x, y, distance) { n if n < 4 => next[x][y] = false, n if n > 4 => next[x][y] = true, - _ => next[x][y] = cells[x][y] + _ => next[x][y] = self.cells[x][y] }; } } - if cells == next { + if self.cells == next { break; } else { - cells = next; + self.cells = next; } } - - Grid { - width, - height, - cell_size, - cells - } + println!("{} iterations needed", count); } - fn neighbours(grid: &Vec>, px: usize, py: usize) -> u8 { + fn neighbours(grid: &Vec>, px: usize, py: usize, distance: usize) -> u8 { let mut count = 0; - for x in (px - 1)..=(px + 1) { - for y in (py - 1)..=(py + 1) { + for x in (px - distance)..=(px + distance) { + for y in (py - distance)..=(py + distance) { if !(x == px && y == py) && grid[x][y] { count += 1; } @@ -122,4 +165,28 @@ impl Grid { } count } + + fn set_each bool>(&mut self, mut func: F, walls: usize) { + for x in walls..(self.width - walls) { + for y in walls..(self.height - walls) { + self.cells[x][y] = func(x, y); + } + } + } + + fn subdivide(&mut self) -> Grid { + let (width, height) = (self.width * 2, self.height * 2); + let mut cells = vec!(vec!(true; height); width); + for x in 1..(width - 1) { + for y in 1..(height - 1) { + cells[x][y] = self.cells[x / 2][y / 2]; + } + } + Grid { + cell_size: self.cell_size / 2, + width, + height, + cells + } + } } diff --git a/src/main.rs b/src/main.rs index 9195583..502789b 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,6 +1,7 @@ extern crate rand; extern crate sdl2; extern crate time; +extern crate noise; use core::game::GameState; use core::app::*;