Files
systemic-game-design-course/course/08-push-chains/tests/rust/test_08.rs
T
Lucas WintherandClaude Opus 5.5 bd80cefbef feat: module 08 push chains
Movement planned in full, then committed: a Planner builds a plan
(moving and destroyed ids) by running content's movement responses
(OPEN/SHUT, PUSH, STOP) for every step, rolling back failed branches.
Edge of level blocks; YOU objects move furthest-ahead first; rules are
reparsed once after movement. Harness: move/move_dir(Dir), posOf,
kindsAt. Expansion Drop: PULL as one word plus one content response.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-10-29 04:05:42 +01:00

140 lines
3.9 KiB
Rust

// Module 8: Push chains. Each test matches a heading in scenarios.md.
use engine::harness::*;
/// An empty level `width` wide and `height` high.
fn empty_level(width: i32, height: i32) -> LevelDef {
LevelDef {
width,
height,
..Default::default()
}
}
/// Place one text object per word: `(word, x, y)`.
fn write(b: &mut Baba, words: &[(&str, i32, i32)]) {
for &(word, x, y) in words {
b.place(&format!("text:{word}"), x, y);
}
}
#[test]
fn test_08_chain_moves_together() {
let mut b = new_baba(empty_level(6, 4));
write(&mut b, &[("BABA", 0, 0), ("IS", 1, 0), ("YOU", 2, 0)]);
write(&mut b, &[("ROCK", 0, 1), ("IS", 1, 1), ("PUSH", 2, 1)]);
let baba = b.place("baba", 0, 3);
let rocks = [
b.place("rock", 1, 3),
b.place("rock", 2, 3),
b.place("rock", 3, 3),
];
b.move_dir(Dir::Right);
assert_eq!(b.pos_of(baba), Some((1, 3)));
assert_eq!(b.pos_of(rocks[0]), Some((2, 3)));
assert_eq!(b.pos_of(rocks[1]), Some((3, 3)));
assert_eq!(b.pos_of(rocks[2]), Some((4, 3)));
assert_eq!(b.kinds_at(0, 3), Vec::<String>::new());
assert_eq!(b.kinds_at(4, 3), vec!["rock"]);
}
#[test]
fn test_08_chain_into_stop_nothing_moves() {
let mut b = new_baba(empty_level(6, 5));
write(&mut b, &[("BABA", 0, 0), ("IS", 1, 0), ("YOU", 2, 0)]);
write(&mut b, &[("ROCK", 0, 1), ("IS", 1, 1), ("PUSH", 2, 1)]);
write(&mut b, &[("WALL", 0, 2), ("IS", 1, 2), ("STOP", 2, 2)]);
let baba = b.place("baba", 0, 4);
let rocks = [
b.place("rock", 1, 4),
b.place("rock", 2, 4),
b.place("rock", 3, 4),
];
let wall = b.place("wall", 4, 4);
b.move_dir(Dir::Right);
assert_eq!(b.pos_of(baba), Some((0, 4)));
assert_eq!(b.pos_of(rocks[0]), Some((1, 4)));
assert_eq!(b.pos_of(rocks[1]), Some((2, 4)));
assert_eq!(b.pos_of(rocks[2]), Some((3, 4)));
assert_eq!(b.pos_of(wall), Some((4, 4)));
}
#[test]
fn test_08_open_shut_during_push() {
let mut b = new_baba(empty_level(5, 5));
write(&mut b, &[("BABA", 0, 0), ("IS", 1, 0), ("YOU", 2, 0)]);
write(
&mut b,
&[
("KEY", 0, 1),
("IS", 1, 1),
("PUSH", 2, 1),
("AND", 3, 1),
("OPEN", 4, 1),
],
);
write(
&mut b,
&[
("DOOR", 0, 2),
("IS", 1, 2),
("STOP", 2, 2),
("AND", 3, 2),
("SHUT", 4, 2),
],
);
let baba = b.place("baba", 0, 4);
let key = b.place("key", 1, 4);
let door = b.place("door", 2, 4);
b.move_dir(Dir::Right);
assert_eq!(b.pos_of(key), None);
assert_eq!(b.pos_of(door), None);
// Inferred, not stated by a source: Baba lands on the key's former tile.
assert_eq!(b.pos_of(baba), Some((1, 4)));
assert_eq!(b.kinds_at(2, 4), Vec::<String>::new());
assert_eq!(b.kinds_at(1, 4), vec!["baba"]);
}
#[test]
fn test_08_text_pushed() {
let mut b = new_baba(empty_level(4, 5));
write(&mut b, &[("BABA", 0, 0), ("IS", 1, 0), ("YOU", 2, 0)]);
let baba = b.place("baba", 0, 2);
let rock_text = b.place("text:ROCK", 1, 2);
write(&mut b, &[("IS", 2, 3), ("PUSH", 2, 4)]);
assert_eq!(b.rules(), vec!["BABA IS YOU", "TEXT IS PUSH"]);
b.move_dir(Dir::Right);
assert_eq!(b.pos_of(baba), Some((1, 2)));
assert_eq!(b.pos_of(rock_text), Some((2, 2)));
assert_eq!(
b.rules(),
vec!["BABA IS YOU", "ROCK IS PUSH", "TEXT IS PUSH"]
);
}
#[test]
fn test_08_level_edge_is_stop() {
let mut b = new_baba(empty_level(3, 3));
write(&mut b, &[("BABA", 0, 0), ("IS", 1, 0), ("YOU", 2, 0)]);
let baba = b.place("baba", 1, 2);
let flag_text = b.place("text:FLAG", 2, 2);
b.move_dir(Dir::Right);
assert_eq!(b.pos_of(baba), Some((1, 2)));
assert_eq!(b.pos_of(flag_text), Some((2, 2)));
b.move_dir(Dir::Down);
assert_eq!(b.pos_of(baba), Some((1, 2)));
assert_eq!(b.pos_of(flag_text), Some((2, 2)));
}