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4 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 Arkadiusz Sygulski
|
b090f2f624 |
HPA* Pathfinding (#2815)
## Pathfinding with HPA*
Hi! The primary objective of this PR is to replace per-tile A* with
hierarchical pathfinding - HPA*. In practice, this means we create an
abstract graph on top of the actual map with far fewer points and use it
to decide on general path structure. Only then we go back to tile-level
and build path between selected waypoints. This speeds up long distance
pathfinding by over 1000x in some cases. To make the review easier, it
comes with a benchmark and visual playground.
## PREPROCESSING
H part of HPA* means "hierarchical" and requires preprocessing.
This PR includes pre-processing as part inside `new Game()` constructor.
It takes about 135ms for `giantworldmap` on my machine, which increases
the effective initialization from ~95ms to ~230ms. This time could be
reduced in different ways, which are **out of scope** for this PR.
After confirming the initialization time is bearable on low-end devices,
I argue merging this PR as-is is acceptable tradeoff. It creates small
lag at the beginning of a round but pays for itself in the first minute
of the match.
## Nerdy details
**Architecture**
- HPA*-style hierarchical pathfinding
- 32×32 sectors on minimap with gateway nodes on borders
- Gateway graph built via BFS during preprocessing
- Water component optimization skips unreachable gateway pairs
- A* on gateway graph → local A* within sectors → Bresenham path
smoothing
- Minimap upscaling identical to currently used in MiniAStar
**Key Optimizations**
- Typed arrays instead of high-level primitives
- Stamp-based visited tracking (no need to recreate buffers, O(1)
clearing)
- Optional - enabled by default - caching of tile paths between gateways
- Line of sight smoothing for the final path
## Review Focus
Play with included tools, benchmark and visualization. Pathfinding
should be safe to merge as a black box - you do not need to understand
the details. Outcomes can be tested empirically in-game. Visualize (and
share!) edge cases with included playground. Confirm the 100x speedup is
real with benchmark.
If you plan to dive into the code, I suggest the following order:
- Pathfinding abstraction in `src/core/pathfinding/`
- Pathfinding tests in `tests/core/pathfinding/`
- NavMesh in `src/core/pathfinding/navmesh/` + integration with
`Game.ts`
- Benchmark in `tests/pathfinding/benchmark/`
Do not look at playground's code, it has been created with a clanker.
The design is 100% mine and I spent way too long polishing it, but I
haven't even once edited the code manually. There is probably no
abstraction whatsoever, just do not look at the code, let it play.
## Core Changes
#### Pathfinding (`src/core/pathfinding/navmesh/`)
- HPA* + refinement -> three phased pathfinding: A* over the graph ->
naive path -> refinement
- comes with A* and BFS optimized for for specific needs
#### Pre-Processing (`src/core/pathfinding/navmesh/`)
- identify water bodies to avoid pathfinding between disconnected nodes
- create high-level graph of gateways on top of tile map
#### Abstraction (`src/core/pathfinding/`)
- common `PathFinder` interface that can return full path and also act
as state machine (`.next()`)
- adapters for both new and legacy algorithm with fallback to legacy if
navigation mesh not available
#### Benchmark (`tests/pathfinding/benchmark/`)
- `npx tsx tests/pathfinding/benchmark/run.ts` - no guesswork, numbers
- `npx tsx tests/pathfinding/benchmark/run.ts --synthetic` - 1000s of
synthetic paths
- `npx tsc tests/pathfinding/benchmark/generate.ts` - generate more as
needed, test new maps
- includes ONE synthetic scenario to avoid PR bloat, generate more
locally / later
#### Playground (`tests/pathfinding/playground/`)
- `npx tsx tests/pathfinding/playground/server.ts` - visualize paths
with both new and legacy algorithm
## Benchmarks
### Compared with legacy in default - hand picked - scenario:
```
Initialization: 95.95ms -> 227.29ms
Pathfinding: 3038.43ms -> 6.45ms
Distance: 26972 -> 26810 tiles
```
### 42,000 synthetic routes across all maps
```
Running 42 synthetic scenarios with hpa.cached adapter...
✅ synthetic/achiran | Init: 93.42ms | Path: 139.07ms | Dist: 1481630 tiles | Routes: 1000/1000
✅ synthetic/africa | Init: 87.14ms | Path: 155.08ms | Dist: 1829414 tiles | Routes: 1000/1000
✅ synthetic/asia | Init: 57.60ms | Path: 112.55ms | Dist:
|
||
|
Wraith
|
26f5d40819 |
build: migrate build system to Vite and test runner to Vitest & Remove depracated husky usage (#2703)
- Replace Webpack with Vite for faster client bundling and HMR. - Migrate tests from Jest to Vitest and update configuration. - Update Web Worker instantiation to standard ESM syntax. - Implement Env utility in `src/core` for safe, hybrid environment variable access (Vite vs Node). - Refactor configuration loaders to remove direct `process.env` dependencies in shared code. - Update TypeScript environment definitions and project scripts for the new toolchain. - Remove the [depracated usage of the husky](https://github.com/typicode/husky/releases/tag/v9.0.1). ## Description: migrate build system to Vite and test runner to Vitest & Remove depracated husky usage ## Please complete the following: - [X] I have added screenshots for all UI updates - [X] I process any text displayed to the user through translateText() and I've added it to the en.json file - [ ] I have added relevant tests to the test directory - [X] I confirm I have thoroughly tested these changes and take full responsibility for any bugs introduced ## Please put your Discord username so you can be contacted if a bug or regression is found: wraith4081 --------- Co-authored-by: evanpelle <evanpelle@gmail.com> |
||
|
DevelopingTom
|
d3c4cd6620 |
Record missing stats (#2407)
## Description: Some stats are missing from the recorded game stats: - Unit upgrade - Gold from trade and from steal The gold from trade/steal was introduced with [PR 784](https://github.com/openfrontio/OpenFrontIO/pull/784) but was quickly reverted with [PR 927](https://github.com/openfrontio/OpenFrontIO/pull/927), probably involuntarily. ## Please complete the following: - [x] I have added screenshots for all UI updates - [x] I process any text displayed to the user through translateText() and I've added it to the en.json file - [x] I have added relevant tests to the test directory - [x] I confirm I have thoroughly tested these changes and take full responsibility for any bugs introduced ## Please put your Discord username so you can be contacted if a bug or regression is found: IngloriousTom |
||
|
VariableVince
|
b850a2f93d |
Tradeship performance (#1448)
## Description: Small performance improvements for tradeship execution. With the new cap of 100 tradeships in total, the impact is smaller but still there. Also added jlrouillard's (Vivacious Box) test with permission from PR #1449. Tests 100% passed. - Save tradeship owner, destination port owner and tradeship current tile in constants for re-use. - Added check if wasCaptured was already set to true, before comparing origOwner and tradeship owner and setting wasCaptured to true. Currently, wasCaptured is set to true once and never back to false again. This PR keeps it that way but a but faster. - One less call to pathfinder needed: before calling pathfinder, check if current tile is destination port tile, and if so call complete. This is basically the same as pathfinder would do, but less complex without need for e.g. manhattan distance. - case PathFindResultType.Completed: isn't needed anymore because of the above. Kept as fallback. But moved it down in the switch statement, as there's a low(er) chance the case will ever be true. - Test if we need to find a new destination port for captured ship: currently, if this.wasCaptured is true, it will look for a new destination port each tick again and again. With this PR, only do this if destination port isn't owned by capturer, or if that port has become inactive. In tests with thousands of tradeships, went down from 300K+ times setting 'new' port, to only 1250 calls. **Q:** Will this code work for ships that are captured again, after being captured already? **A:** Yes. After wasCaptured is set to true once (after first capture), we only need to check each tick if the destination port is owned by the current tradeship owner, to know if we need to assign a new destination port again. ## Please complete the following: - [x] I have added screenshots for all UI updates - [x] I process any text displayed to the user through translateText() and I've added it to the en.json file - [x] I have added relevant tests to the test directory - [x] I confirm I have thoroughly tested these changes and take full responsibility for any bugs introduced - [x] I understand that submitting code with bugs that could have been caught through manual testing blocks releases and new features for all contributors ## Please put your Discord username so you can be contacted if a bug or regression is found: tryout33 |