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Separate out into another library

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This commit is contained in:
Greg Shuflin 2021-09-20 23:18:24 -07:00
parent 6a780efa4a
commit e105053e81
5 changed files with 377 additions and 357 deletions
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8
iced-tetris/Cargo.lock generated
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@ -998,6 +998,7 @@ dependencies = [
"iced",
"iced_native",
"rand",
"tetris-logic",
]
[[package]]
@ -2099,6 +2100,13 @@ dependencies = [
"winapi-util",
]
[[package]]
name = "tetris-logic"
version = "0.1.0"
dependencies = [
"rand",
]
[[package]]
name = "thiserror"
version = "1.0.29"

4
iced-tetris/Cargo.toml
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@ -11,3 +11,7 @@ iced = { git = "https://github.com/hecrj/iced", rev = "099981cfc2f61a1f37e841005
iced_native = { git = "https://github.com/hecrj/iced", rev = "099981cfc2f61a1f37e84100592d65babb94fb82"}
chrono = "0.4.19"
rand = "0.8.4"
tetris-logic = { path = "tetris-logic" }
[workspace]
members = ["tetris-logic"]

366
iced-tetris/src/main.rs
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@ -4,10 +4,7 @@ use iced::{
Settings, Size, Subscription,
};
use iced_native::{event, subscription, Event};
use rand::distributions::{Distribution, Standard};
const START_LOCATION: (u8, u8) = (5, 1);
type PieceBlocks = [(i8, i8); 4];
use tetris_logic::{BlockGrid, MoveDirection, Tetromino};
fn main() -> iced::Result {
Tetris::run(Settings::default())
@ -68,17 +65,14 @@ impl Application for Tetris {
}
};
match self.blocks.active_piece {
None => {
let piece: Tetromino = rand::random();
self.blocks.drop_piece(piece);
if self.blocks.piece_currently_active() {
if self.ticks % 10 == 0 {
self.blocks.move_active_piece(MoveDirection::SoftDrop);
}
Some(_) => {
if self.ticks % 10 == 0 {
self.blocks.move_active_piece(MoveDirection::SoftDrop);
}
}
};
} else {
let piece: Tetromino = rand::random();
self.blocks.drop_piece(piece);
}
let lines_removed = self.blocks.clear_pieces();
self.lines_removed += lines_removed;
@ -135,6 +129,7 @@ impl<'a> canvas::Program<Message> for Tetris {
);
let block = Path::rectangle(point, block_size);
let color = tetronimo.color();
let color = Color::from_rgb8(color.0, color.1, color.2);
frame.fill(&block, color);
}
@ -164,346 +159,3 @@ enum Message {
Pause,
Tick(chrono::DateTime<chrono::Local>),
}
struct BlockGrid {
state: [[Option<Block>; 20]; 10],
active_piece: Option<ActivePiece>,
}
#[derive(Debug, Copy, Clone)]
struct ActivePiece {
location: (u8, u8),
tetromino: Tetromino,
orientation: Orientation,
}
impl ActivePiece {
fn move_piece(&self, direction: &MoveDirection) -> ActivePiece {
use MoveDirection::*;
let (cur_x, cur_y) = self.location;
ActivePiece {
tetromino: self.tetromino,
orientation: self.orientation,
location: match direction {
Left => (cur_x.checked_sub(1).unwrap_or(0), cur_y),
Right => (cur_x + 1, cur_y),
SoftDrop => (cur_x, cur_y + 1),
HardDrop => (cur_x, cur_y),
},
}
}
fn rotate_piece(&self) -> ActivePiece {
ActivePiece {
tetromino: self.tetromino,
location: self.location,
orientation: match self.orientation {
Orientation::A => Orientation::B,
Orientation::B => Orientation::C,
Orientation::C => Orientation::D,
Orientation::D => Orientation::A,
},
}
}
}
impl BlockGrid {
fn new() -> BlockGrid {
let mut state = [[None; 20]; 10];
BlockGrid {
state,
active_piece: None,
}
}
/// If it's impossible to drop a piece, return false
fn drop_piece(&mut self, tetromino: Tetromino) -> bool {
if let None = self.active_piece {
let piece = ActivePiece {
location: START_LOCATION,
tetromino,
orientation: Orientation::A,
};
let piece_blocks = Self::piece_blocks(&piece);
if self.piece_blocks_in_bounds(piece_blocks) {
self.active_piece = Some(piece);
true
} else {
false
}
} else {
false
}
}
fn piece_blocks_in_bounds(&self, piece_blocks: PieceBlocks) -> bool {
piece_blocks.iter().all(|(x, y)| {
let x = *x;
let y = *y;
x >= 0 && y >= 0 && x < 10 && y < 20 && self.state[x as usize][y as usize].is_none()
})
}
/// If there is an active piece, and the move is legal, move it. Return true if it was possible
/// to move an active piece, false otherwise.
fn move_active_piece(&mut self, direction: MoveDirection) -> bool {
let active = self.active_piece;
match (active, direction) {
(None, _) => false,
(Some(piece), MoveDirection::Left | MoveDirection::Right) => {
let new_piece = piece.move_piece(&direction);
let new_blocks = Self::piece_blocks(&new_piece);
if self.piece_blocks_in_bounds(new_blocks) {
self.active_piece = Some(new_piece);
true
} else {
false
}
}
(Some(ref piece), MoveDirection::HardDrop) => {
let mut new_piece = *piece;
loop {
let p = new_piece.move_piece(&MoveDirection::SoftDrop);
let new_blocks = Self::piece_blocks(&p);
if self.piece_blocks_in_bounds(new_blocks) {
new_piece = p;
} else {
break;
}
}
self.active_piece = Some(new_piece);
self.place_active_piece();
true
}
(Some(ref piece), MoveDirection::SoftDrop) => {
let new_piece = piece.move_piece(&MoveDirection::SoftDrop);
let new_blocks = Self::piece_blocks(&new_piece);
if self.piece_blocks_in_bounds(new_blocks) {
self.active_piece = Some(new_piece);
true
} else {
self.place_active_piece();
false
}
}
}
}
fn rotate_active_piece(&mut self) -> bool {
let active = self.active_piece;
if let Some(piece) = active {
let new_piece = piece.rotate_piece();
let new_blocks = Self::piece_blocks(&new_piece);
if self.piece_blocks_in_bounds(new_blocks) {
self.active_piece = Some(new_piece);
true
} else {
false
}
} else {
false
}
}
/// Remove the currently active piece and place its blocks onto the board.
fn place_active_piece(&mut self) {
if let Some(piece) = self.active_piece {
let cur_blocks = Self::piece_blocks(&piece);
for (x, y) in cur_blocks.iter() {
self.state[*x as usize][*y as usize] = Some(Block {
source: piece.tetromino,
});
}
self.active_piece = None;
}
}
fn piece_blocks(piece: &ActivePiece) -> PieceBlocks {
use Orientation::*;
use Tetromino::*;
let (x, y) = piece.location;
let (x, y) = (x as i8, y as i8);
// These use the "Original Rotation System" cf. Tetris wiki
match (piece.tetromino, piece.orientation) {
(I, A | C) => [(x - 2, y), (x - 1, y), (x, y), (x + 1, y)],
(I, B | D) => [(x, y - 1), (x, y), (x, y + 1), (x, y + 2)],
(J, A) => [(x - 1, y), (x, y), (x + 1, y), (x + 1, y + 1)],
(J, B) => [(x, y), (x + 1, y), (x, y + 1), (x, y + 2)],
(J, C) => [(x - 1, y), (x - 1, y + 1), (x, y + 1), (x + 1, y + 1)],
(J, D) => [(x, y), (x, y + 1), (x, y + 2), (x - 1, y + 2)],
(L, A) => [(x - 1, y + 1), (x - 1, y), (x, y), (x + 1, y)],
(L, B) => [(x, y), (x, y + 1), (x, y + 2), (x + 1, y + 2)],
(L, C) => [(x - 1, y + 1), (x, y + 1), (x + 1, y + 1), (x + 1, y)],
(L, D) => [(x - 1, y), (x, y), (x, y + 1), (x, y + 2)],
(O, _) => [(x, y), (x, y + 1), (x - 1, y), (x - 1, y + 1)],
(S, A | C) => [(x - 1, y + 1), (x, y + 1), (x, y), (x + 1, y)],
(S, B | D) => [(x, y), (x, y + 1), (x + 1, y + 1), (x + 1, y + 2)],
(T, A) => [(x - 1, y), (x, y), (x + 1, y), (x, y + 1)],
(T, B) => [(x, y), (x, y + 1), (x + 1, y + 1), (x, y + 2)],
(T, C) => [(x, y), (x - 1, y + 1), (x, y + 1), (x + 1, y + 1)],
(T, D) => [(x - 1, y + 1), (x, y), (x, y + 1), (x, y + 2)],
(Z, A | C) => [(x - 1, y + 1), (x, y + 1), (x, y + 2), (x + 1, y + 2)],
(Z, B | D) => [(x, y), (x, y + 1), (x + 1, y), (x + 1, y - 1)],
}
}
/// Returns number of lines removed
fn clear_pieces(&mut self) -> u32 {
let mut new_state = [[None; 20]; 10];
let mut offset = 0;
for row in (0..=19).rev() {
let mut all_filled = true;
let mut all_empty = true;
for col in 0..10 {
if self.state[col][row].is_none() {
all_filled = false;
}
if self.state[col][row].is_some() {
all_empty = false;
}
}
if all_filled && !all_empty {
offset += 1;
} else {
if offset != 0 {
println!("Offset {} row {}", offset, row);
}
for col in 0..10 {
new_state[col][row+offset] = self.state[col][row];
}
}
}
self.state = new_state;
println!("OFFSET: {}", offset);
offset as u32
}
fn iter<'a>(&'a self) -> BlockGridIter<'a> {
let active_piece_blocks = self.active_piece.as_ref().map(|piece| {
let b = Self::piece_blocks(piece);
let blocks = [
(b[0].0 as u8, b[0].1 as u8),
(b[1].0 as u8, b[1].1 as u8),
(b[2].0 as u8, b[2].1 as u8),
(b[3].0 as u8, b[3].1 as u8),
];
(piece.tetromino, blocks)
});
BlockGridIter::new(&self.state, active_piece_blocks)
}
}
struct BlockGridIter<'a> {
outer_state: &'a [[Option<Block>; 20]; 10],
outer_active: Option<(Tetromino, [(u8, u8); 4])>,
idx: usize,
active_pice_idx: usize,
}
impl<'a> BlockGridIter<'a> {
fn new(
state: &'a [[Option<Block>; 20]; 10],
outer_active: Option<(Tetromino, [(u8, u8); 4])>,
) -> Self {
BlockGridIter {
outer_state: state,
idx: 0,
active_pice_idx: 0,
outer_active,
}
}
}
impl<'a> std::iter::Iterator for BlockGridIter<'a> {
type Item = (u8, u8, Tetromino);
fn next(&mut self) -> Option<Self::Item> {
loop {
if self.idx >= 200 {
return self.outer_active.and_then(|(tetromino, block_array)| {
let i = self.active_pice_idx;
self.active_pice_idx += 1;
block_array.get(i).map(|(x, y)| (*x, *y, tetromino))
});
}
let i = self.idx % 10;
let j = self.idx / 10;
match self.outer_state[i][j] {
Some(block) => {
self.idx += 1;
return Some((i as u8, j as u8, block.source));
}
None => {
self.idx += 1;
}
}
}
}
}
#[derive(Debug, Clone, Copy)]
struct Block {
source: Tetromino,
}
#[derive(Debug, Copy, Clone)]
enum MoveDirection {
Left,
Right,
HardDrop,
SoftDrop,
}
#[derive(Debug, Copy, Clone)]
enum Orientation {
A,
B,
C,
D,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
enum Tetromino {
I,
J,
L,
O,
S,
T,
Z,
}
impl Tetromino {
fn color(self) -> Color {
use Tetromino::*;
match self {
I => Color::from_rgb8(0, 255, 255),
J => Color::from_rgb8(0, 0, 255),
L => Color::from_rgb8(255, 165, 0),
O => Color::from_rgb8(255, 255, 0),
S => Color::from_rgb8(0, 255, 0),
T => Color::from_rgb8(255, 255, 0),
Z => Color::from_rgb8(128, 0, 128),
}
}
}
impl Distribution<Tetromino> for Standard {
fn sample<R: rand::Rng + ?Sized>(&self, rng: &mut R) -> Tetromino {
let index: u8 = rng.gen_range(0..=6);
match index {
0 => Tetromino::I,
1 => Tetromino::J,
2 => Tetromino::L,
3 => Tetromino::O,
4 => Tetromino::S,
5 => Tetromino::T,
6 => Tetromino::Z,
_ => unreachable!(),
}
}
}

9
iced-tetris/tetris-logic/Cargo.toml Normal file
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@ -0,0 +1,9 @@
[package]
name = "tetris-logic"
version = "0.1.0"
edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
rand = "0.8.4"

347
iced-tetris/tetris-logic/src/lib.rs Normal file
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@ -0,0 +1,347 @@
use rand::distributions::{Distribution, Standard};
const START_LOCATION: (u8, u8) = (5, 1);
type PieceBlocks = [(i8, i8); 4];
pub struct BlockGrid {
state: [[Option<Block>; 20]; 10],
active_piece: Option<ActivePiece>,
}
impl BlockGrid {
pub fn new() -> BlockGrid {
let mut state = [[None; 20]; 10];
BlockGrid {
state,
active_piece: None,
}
}
pub fn piece_currently_active(&self) -> bool {
self.active_piece.is_some()
}
/// If it's impossible to drop a piece, return false
pub fn drop_piece(&mut self, tetromino: Tetromino) -> bool {
if let None = self.active_piece {
let piece = ActivePiece {
location: START_LOCATION,
tetromino,
orientation: Orientation::A,
};
let piece_blocks = Self::piece_blocks(&piece);
if self.piece_blocks_in_bounds(piece_blocks) {
self.active_piece = Some(piece);
true
} else {
false
}
} else {
false
}
}
fn piece_blocks_in_bounds(&self, piece_blocks: PieceBlocks) -> bool {
piece_blocks.iter().all(|(x, y)| {
let x = *x;
let y = *y;
x >= 0 && y >= 0 && x < 10 && y < 20 && self.state[x as usize][y as usize].is_none()
})
}
/// If there is an active piece, and the move is legal, move it. Return true if it was possible
/// to move an active piece, false otherwise.
pub fn move_active_piece(&mut self, direction: MoveDirection) -> bool {
let active = self.active_piece;
match (active, direction) {
(None, _) => false,
(Some(piece), MoveDirection::Left | MoveDirection::Right) => {
let new_piece = piece.move_piece(&direction);
let new_blocks = Self::piece_blocks(&new_piece);
if self.piece_blocks_in_bounds(new_blocks) {
self.active_piece = Some(new_piece);
true
} else {
false
}
}
(Some(ref piece), MoveDirection::HardDrop) => {
let mut new_piece = *piece;
loop {
let p = new_piece.move_piece(&MoveDirection::SoftDrop);
let new_blocks = Self::piece_blocks(&p);
if self.piece_blocks_in_bounds(new_blocks) {
new_piece = p;
} else {
break;
}
}
self.active_piece = Some(new_piece);
self.place_active_piece();
true
}
(Some(ref piece), MoveDirection::SoftDrop) => {
let new_piece = piece.move_piece(&MoveDirection::SoftDrop);
let new_blocks = Self::piece_blocks(&new_piece);
if self.piece_blocks_in_bounds(new_blocks) {
self.active_piece = Some(new_piece);
true
} else {
self.place_active_piece();
false
}
}
}
}
pub fn rotate_active_piece(&mut self) -> bool {
let active = self.active_piece;
if let Some(piece) = active {
let new_piece = piece.rotate_piece();
let new_blocks = Self::piece_blocks(&new_piece);
if self.piece_blocks_in_bounds(new_blocks) {
self.active_piece = Some(new_piece);
true
} else {
false
}
} else {
false
}
}
/// Remove the currently active piece and place its blocks onto the board.
fn place_active_piece(&mut self) {
if let Some(piece) = self.active_piece {
let cur_blocks = Self::piece_blocks(&piece);
for (x, y) in cur_blocks.iter() {
self.state[*x as usize][*y as usize] = Some(Block {
source: piece.tetromino,
});
}
self.active_piece = None;
}
}
fn piece_blocks(piece: &ActivePiece) -> PieceBlocks {
use Orientation::*;
use Tetromino::*;
let (x, y) = piece.location;
let (x, y) = (x as i8, y as i8);
// These use the "Original Rotation System" cf. Tetris wiki
match (piece.tetromino, piece.orientation) {
(I, A | C) => [(x - 2, y), (x - 1, y), (x, y), (x + 1, y)],
(I, B | D) => [(x, y - 1), (x, y), (x, y + 1), (x, y + 2)],
(J, A) => [(x - 1, y), (x, y), (x + 1, y), (x + 1, y + 1)],
(J, B) => [(x, y), (x + 1, y), (x, y + 1), (x, y + 2)],
(J, C) => [(x - 1, y), (x - 1, y + 1), (x, y + 1), (x + 1, y + 1)],
(J, D) => [(x, y), (x, y + 1), (x, y + 2), (x - 1, y + 2)],
(L, A) => [(x - 1, y + 1), (x - 1, y), (x, y), (x + 1, y)],
(L, B) => [(x, y), (x, y + 1), (x, y + 2), (x + 1, y + 2)],
(L, C) => [(x - 1, y + 1), (x, y + 1), (x + 1, y + 1), (x + 1, y)],
(L, D) => [(x - 1, y), (x, y), (x, y + 1), (x, y + 2)],
(O, _) => [(x, y), (x, y + 1), (x - 1, y), (x - 1, y + 1)],
(S, A | C) => [(x - 1, y + 1), (x, y + 1), (x, y), (x + 1, y)],
(S, B | D) => [(x, y), (x, y + 1), (x + 1, y + 1), (x + 1, y + 2)],
(T, A) => [(x - 1, y), (x, y), (x + 1, y), (x, y + 1)],
(T, B) => [(x, y), (x, y + 1), (x + 1, y + 1), (x, y + 2)],
(T, C) => [(x, y), (x - 1, y + 1), (x, y + 1), (x + 1, y + 1)],
(T, D) => [(x - 1, y + 1), (x, y), (x, y + 1), (x, y + 2)],
(Z, A | C) => [(x - 1, y + 1), (x, y + 1), (x, y + 2), (x + 1, y + 2)],
(Z, B | D) => [(x, y), (x, y + 1), (x + 1, y), (x + 1, y - 1)],
}
}
/// Returns number of lines removed
pub fn clear_pieces(&mut self) -> u32 {
let mut new_state = [[None; 20]; 10];
let mut offset = 0;
for row in (0..=19).rev() {
let mut all_filled = true;
let mut all_empty = true;
for col in 0..10 {
if self.state[col][row].is_none() {
all_filled = false;
}
if self.state[col][row].is_some() {
all_empty = false;
}
}
if all_filled && !all_empty {
offset += 1;
} else {
for col in 0..10 {
new_state[col][row + offset] = self.state[col][row];
}
}
}
self.state = new_state;
offset as u32
}
pub fn iter<'a>(&'a self) -> BlockGridIter<'a> {
let active_piece_blocks = self.active_piece.as_ref().map(|piece| {
let b = Self::piece_blocks(piece);
let blocks = [
(b[0].0 as u8, b[0].1 as u8),
(b[1].0 as u8, b[1].1 as u8),
(b[2].0 as u8, b[2].1 as u8),
(b[3].0 as u8, b[3].1 as u8),
];
(piece.tetromino, blocks)
});
BlockGridIter::new(&self.state, active_piece_blocks)
}
}
#[derive(Debug, Copy, Clone)]
struct ActivePiece {
location: (u8, u8),
tetromino: Tetromino,
orientation: Orientation,
}
impl ActivePiece {
fn move_piece(&self, direction: &MoveDirection) -> ActivePiece {
use MoveDirection::*;
let (cur_x, cur_y) = self.location;
ActivePiece {
tetromino: self.tetromino,
orientation: self.orientation,
location: match direction {
Left => (cur_x.checked_sub(1).unwrap_or(0), cur_y),
Right => (cur_x + 1, cur_y),
SoftDrop => (cur_x, cur_y + 1),
HardDrop => (cur_x, cur_y),
},
}
}
fn rotate_piece(&self) -> ActivePiece {
ActivePiece {
tetromino: self.tetromino,
location: self.location,
orientation: match self.orientation {
Orientation::A => Orientation::B,
Orientation::B => Orientation::C,
Orientation::C => Orientation::D,
Orientation::D => Orientation::A,
},
}
}
}
pub struct BlockGridIter<'a> {
outer_state: &'a [[Option<Block>; 20]; 10],
outer_active: Option<(Tetromino, [(u8, u8); 4])>,
idx: usize,
active_pice_idx: usize,
}
impl<'a> BlockGridIter<'a> {
fn new(
state: &'a [[Option<Block>; 20]; 10],
outer_active: Option<(Tetromino, [(u8, u8); 4])>,
) -> Self {
BlockGridIter {
outer_state: state,
idx: 0,
active_pice_idx: 0,
outer_active,
}
}
}
impl<'a> std::iter::Iterator for BlockGridIter<'a> {
type Item = (u8, u8, Tetromino);
fn next(&mut self) -> Option<Self::Item> {
loop {
if self.idx >= 200 {
return self.outer_active.and_then(|(tetromino, block_array)| {
let i = self.active_pice_idx;
self.active_pice_idx += 1;
block_array.get(i).map(|(x, y)| (*x, *y, tetromino))
});
}
let i = self.idx % 10;
let j = self.idx / 10;
match self.outer_state[i][j] {
Some(block) => {
self.idx += 1;
return Some((i as u8, j as u8, block.source));
}
None => {
self.idx += 1;
}
}
}
}
}
#[derive(Debug, Clone, Copy)]
struct Block {
source: Tetromino,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum Tetromino {
I,
J,
L,
O,
S,
T,
Z,
}
#[derive(Debug, Copy, Clone)]
pub enum Orientation {
A,
B,
C,
D,
}
#[derive(Debug, Copy, Clone)]
pub enum MoveDirection {
Left,
Right,
HardDrop,
SoftDrop,
}
impl Tetromino {
pub fn color(self) -> (u8, u8, u8) {
use Tetromino::*;
match self {
I => (0, 255, 255),
J => (0, 0, 255),
L => (255, 165, 0),
O => (255, 255, 0),
S => (0, 255, 0),
T => (255, 255, 0),
Z => (128, 0, 128),
}
}
}
impl Distribution<Tetromino> for Standard {
fn sample<R: rand::Rng + ?Sized>(&self, rng: &mut R) -> Tetromino {
let index: u8 = rng.gen_range(0..=6);
match index {
0 => Tetromino::I,
1 => Tetromino::J,
2 => Tetromino::L,
3 => Tetromino::O,
4 => Tetromino::S,
5 => Tetromino::T,
6 => Tetromino::Z,
_ => unreachable!(),
}
}
}