82 lines
2.2 KiB
Dart
82 lines
2.2 KiB
Dart
import 'dart:developer';
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import 'dart:math' as math;
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import 'package:dartterm/world/level.dart';
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part 'direction.dart';
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part 'direction_set.dart';
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part 'orientation.dart';
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part 'requirement.dart';
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part 'vault.dart';
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part 'vaults.dart';
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class Generator {
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final math.Random _random;
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final Vaults _vaults;
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Generator(this._random, this._vaults);
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Vault generateBoxed(Requirement req) {
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var vx = req.vx;
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var vy = req.vy;
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var v = Vault.blank(vx, vy, req.smooth, LevelTile.wall);
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if (req.vx < 2 || req.vy < 2) {
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return v;
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}
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var req2 = Requirement(vx - 2, vy - 2, req.smooth);
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var inner = generate(req2);
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v.blitFrom(inner, 1, 1);
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return v;
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}
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Vault generate(Requirement requirement) {
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// TODO: Pick a relevant vault from the vaults file if possible
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// First of all: randomize orientation
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// This way we only have to consider one kind of spilt
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var orientation = randomOrientation(_random);
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// Try to make vx the long axis if possible
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var req2 = unReorientRequirement(requirement, orientation);
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if (req2.vy > (req2.vx - 2) * 3 / 2) {
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orientation = (orientation + 2) % 8; // rotate once more
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}
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req2 = unReorientRequirement(requirement, orientation);
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var out2 = _generate(req2);
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var out1 = reorientVault(out2, orientation);
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log("$orientation ${requirement.vx} ${requirement.vy} ${req2.vx} ${req2.vy} ${out2.vx} ${out2.vy} ${out1.vx} ${out1.vy}");
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assert(out1.vx == requirement.vx);
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assert(out1.vy == requirement.vy);
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return out1;
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}
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Vault _generate(Requirement req) {
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var vx = req.vx;
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var vy = req.vy;
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var v = Vault.blank(vx, vy, req.smooth, LevelTile.wall);
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if (vx < 5 || vx * vy < 10) {
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v.clear(LevelTile.floor);
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} else {
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// pick a split point
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var splitVx = _random.nextInt(vx - 4) + 2;
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var reqLeft = Requirement(splitVx, vy, req.smooth.clone());
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reqLeft.smooth.directions.add(Direction.right);
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var reqRight = Requirement((vx - splitVx - 1), vy, req.smooth.clone());
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reqRight.smooth.directions.add(Direction.left);
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var vaultLeft = generate(reqLeft);
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var vaultRight = generate(reqRight);
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v.blitFrom(vaultLeft, 0, 0);
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v.blitFrom(vaultRight, splitVx + 1, 0);
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}
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return v;
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}
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}
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