leif/lexys-labyrinth
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add rudimentary support for CCL export

Browse Source
This commit is contained in:
Eevee (Evelyn Woods) 2021-04-28 18:44:01 -06:00
parent f48cef5250
commit c1bf88d3dd
2 changed files with 277 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

228
js/format-dat.js
View File

@ -121,6 +121,45 @@ const TILE_ENCODING = {
0x6f: ['player', 'east'],
};
const REVERSE_TILE_ENCODING = {};
for (let [tile_byte, spec] of Object.entries(TILE_ENCODING)) {
tile_byte = parseInt(tile_byte, 10); // these are keys so they get stringified ugh
if (0x36 <= tile_byte && tile_byte <= 0x37) {
// These are unused tiles which get turned into invisible walls; don't encode invisible
// walls as them! (0x38 is also "unused", but pgchip turns it into ice block.)
continue;
}
let name, arg;
if (spec instanceof Array) {
[name, arg] = spec;
}
else {
name = spec;
arg = null;
}
let rev_spec = REVERSE_TILE_ENCODING[name];
if (! rev_spec) {
rev_spec = {};
REVERSE_TILE_ENCODING[name] = rev_spec;
}
if (arg === null || tile_byte === 0x0a) {
// Special case: 0x0a is MSCC's undirected dirt block, which needs to coexist with the
// directed "clone" blocks
rev_spec['all'] = tile_byte;
}
else if (typeof arg === 'string') {
// This is a direction
rev_spec[arg] = tile_byte;
}
else {
// This is the thin_walls argument structure
rev_spec[arg.edges] = tile_byte;
}
}
function decode_password(bytes, start, len) {
let password = [];
for (let i = 0; i < len; i++) {
@ -395,3 +434,192 @@ export function parse_game(buf) {
return game;
}
export class CCLEncodingErrors extends util.LLError {
constructor(errors) {
super("Failed to encode level as CCL");
this.errors = errors;
}
}
export function synthesize_level(stored_level) {
let errors = [];
if (stored_level.size_x !== 32) {
errors.push(`Level width must be 32, not ${stored_level.size_x}`);
}
if (stored_level.size_y !== 32) {
errors.push(`Level width must be 32, not ${stored_level.size_y}`);
}
// TODO might also want the tile world "lynx mode" magic number, or pgchip's ice block rules
let magic = 0x0002aaac;
let top_layer = [];
let bottom_layer = [];
let error_found_wires = false;
// TODO i could be a little kinder and support, say, items on terrain; do those work in mscc? tw lynx?
for (let [i, cell] of stored_level.linear_cells.entries()) {
let actor = null;
let other = null;
for (let tile of cell) {
if (! tile)
continue;
if (tile.wire_directions || tile.wire_tunnel_directions) {
error_found_wires = true;
}
if (tile.type.layer === LAYERS.actor) {
actor = tile;
}
else if (tile.type.name === 'floor') {
// This is the default anyway, so don't count it against the number of tiles
continue;
}
else if (other) {
let [x, y] = stored_level.scalar_to_coords(i);
errors.push(`A cell can only contain one static tile, but cell (${x}, ${y}) has both ${other.type.name} and ${tile.type.name}`);
}
else {
other = tile;
}
}
let actor_byte = null;
let other_byte = null;
if (actor) {
let rev_spec = REVERSE_TILE_ENCODING[actor.type.name];
if (rev_spec) {
// Special case: dirt blocks only have a direction when on a cloner
if (actor.type.name === 'dirt_block' && ! (other && other.type.name === 'cloner')) {
actor_byte = rev_spec['all'];
}
else {
actor_byte = rev_spec[actor.direction];
}
}
else {
errors.push(`Can't encode tile: ${actor.type.name}`);
}
}
if (other) {
let rev_spec = REVERSE_TILE_ENCODING[other.type.name];
if (rev_spec) {
// Special case: thin walls only come in one of a few configurations
if (other.type.name === 'thin_walls') {
if (other.edges in rev_spec) {
other_byte = rev_spec[other.edges];
}
else {
errors.push(`Thin walls may only have one edge, or be a lower-right corner`);
}
}
else {
other_byte = rev_spec['all'];
}
}
else {
errors.push(`Can't encode tile: ${other.type.name}`);
}
}
if (other_byte === null) {
other_byte = 0x00; // floor
}
if (actor_byte === null) {
top_layer.push(other_byte);
bottom_layer.push(0x00);
}
else {
top_layer.push(actor_byte);
bottom_layer.push(other_byte);
}
}
if (error_found_wires) {
errors.push(`Wires are not supported`);
}
// TODO RLE
let top_layer_bytes = top_layer;
let bottom_layer_bytes = bottom_layer;
// Assemble metadata fields. You'd think this would deserve a little wrapper like I have for
// the C2M sections, but you're wrong!
let metadata_blocks = [];
let metadata_length = 0;
function add_block(type, contents) {
let len = 2 + contents.byteLength;
let bytes = new Uint8Array(len);
bytes[0] = type;
bytes[1] = contents.byteLength;
bytes.set(new Uint8Array(contents), 2);
metadata_blocks.push(bytes);
metadata_length += len;
}
// Level name
// TODO do something with not-ascii; does TW support utf8 or latin1 or anything?
add_block(3, util.bytestring_to_buffer(stored_level.title.substring(0, 63) + "\0"));
// TODO 4: trap links
// TODO 5: cloner links
// Password
// TODO support this for real lol
add_block(6, util.bytestring_to_buffer("XXXX\0"));
// Hint
// TODO uh, yeah, this too
// TODO do something with not-ascii; does TW support utf8 or latin1 or anything?
add_block(7, util.bytestring_to_buffer("TODO hints aren't yet supported".substring(0, 127) + "\0"));
// Monster positions
// TODO this is dumb as hell but do it too
add_block(10, new ArrayBuffer);
if (errors.length > 0) {
throw new CCLEncodingErrors(errors);
}
// OK, almost done, serialize for real
let level_length = (
10 + // level header
2 + top_layer_bytes.length +
2 + bottom_layer_bytes.length +
2 + metadata_length
);
let total_length = (
6 + // game header
level_length
);
let ret = new ArrayBuffer(total_length);
let array = new Uint8Array(ret);
let view = new DataView(ret);
view.setUint32(0, magic, true);
view.setUint16(4, 1, true); // level count, teehee
let p = 6;
view.setUint16(p, level_length - 2, true); // doesn't include this field
view.setUint16(p + 2, 1, true); // level number
view.setUint16(p + 4, stored_level.time_limit, true);
view.setUint16(p + 6, stored_level.chips_required || 0, true); // FIXME
view.setUint16(p + 8, 1, true); // always 1? indicates compressed map data?
p += 10;
// Map data
view.setUint16(p, top_layer_bytes.length, true);
array.set(new Uint8Array(top_layer_bytes), p + 2);
p += 2 + top_layer_bytes.length;
view.setUint16(p, bottom_layer_bytes.length, true);
array.set(new Uint8Array(bottom_layer_bytes), p + 2);
p += 2 + bottom_layer_bytes.length;
// Metadata
view.setUint16(p, metadata_length, true);
p += 2;
for (let block of metadata_blocks) {
array.set(block, p);
p += block.byteLength;
}
if (p !== total_length) {
console.error("Something has gone very awry:", total_length, p);
}
return ret;
}

50
js/main-editor.js
View File

@ -4,6 +4,7 @@ import { DIRECTIONS, LAYERS, TICS_PER_SECOND } from './defs.js';
import { TILES_WITH_PROPS } from './editor-tile-overlays.js';
import * as format_base from './format-base.js';
import * as c2g from './format-c2g.js';
import * as dat from './format-dat.js';
import { PrimaryView, TransientOverlay, DialogOverlay, AlertOverlay, flash_button, load_json_from_storage, save_json_to_storage } from './main-base.js';
import CanvasRenderer from './renderer-canvas.js';
import TILE_TYPES from './tiletypes.js';
@ -540,6 +541,25 @@ class EditorShareOverlay extends DialogOverlay {
}
}
class EditorExportFailedOverlay extends DialogOverlay {
constructor(conductor, errors, warnings) {
// TODO support warnings i guess
super(conductor);
this.set_title("export didn't go so well");
this.main.append(mk('p', "Whoops! I tried very hard to export your level, but it didn't work out. Sorry."));
let ul = mk('ul.editor-export-errors');
// TODO structure the errors better and give them names out here, also reduce duplication,
// also be clear about which are recoverable or not
for (let error of errors) {
ul.append(mk('li', error));
}
this.main.append(ul);
this.add_button("oh well", ev => {
this.close();
});
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
// Mouse tool handling
@ -3603,7 +3623,6 @@ export class Editor extends PrimaryView {
});
_make_button("Download level as C2M", ev => {
// TODO also allow download as CCL
// TODO support getting warnings + errors out of synthesis
let buf = c2g.synthesize_level(this.stored_level);
let blob = new Blob([buf]);
@ -3621,6 +3640,35 @@ export class Editor extends PrimaryView {
URL.revokeObjectURL(url);
}, 60 * 1000);
});
_make_button("Download level as MSCC DAT", ev => {
// TODO support getting warnings out of synthesis?
let buf;
try {
buf = dat.synthesize_level(this.stored_level);
}
catch (errs) {
if (errs instanceof dat.CCLEncodingErrors) {
new EditorExportFailedOverlay(this.conductor, errs.errors).open();
return;
}
throw errs;
}
let blob = new Blob([buf]);
let url = URL.createObjectURL(blob);
// To download a file, um, make an <a> and click it. Not kidding
let a = mk('a', {
href: url,
download: (this.stored_level.title || 'untitled') + '.ccl',
});
document.body.append(a);
a.click();
// Absolutely no idea when I'm allowed to revoke this, but surely a minute is safe
window.setTimeout(() => {
a.remove();
URL.revokeObjectURL(url);
}, 60 * 1000);
});
_make_button("Download pack", ev => {
let stored_pack = this.conductor.stored_game;