mirror of
https://github.com/JGRennison/OpenTTD-patches.git
synced 2024-11-17 21:25:40 +00:00
d15dc9f40f
Emscripten compiles to WASM, which can be loaded via HTML / JavaScript. This allows you to play OpenTTD inside a browser. Co-authored-by: milek7 <me@milek7.pl>
41 lines
1.3 KiB
Markdown
41 lines
1.3 KiB
Markdown
## How to build with Emscripten
|
|
|
|
Building with Emscripten works with emsdk 2.0.10 and above.
|
|
|
|
Currently there is no LibLZMA support upstream; for this we suggest to apply
|
|
the provided patch in this folder to your emsdk installation.
|
|
|
|
For convenience, a Dockerfile is supplied that does this patches for you
|
|
against upstream emsdk docker. Best way to use it:
|
|
|
|
Build the docker image:
|
|
```
|
|
docker build -t emsdk-lzma .
|
|
```
|
|
|
|
Build the host tools first:
|
|
```
|
|
mkdir build-host
|
|
docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build-host emsdk-lzma cmake .. -DOPTION_TOOLS_ONLY=ON
|
|
docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build-host emsdk-lzma make -j5 tools
|
|
```
|
|
|
|
Next, build the game with emscripten:
|
|
|
|
```
|
|
mkdir build
|
|
docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build emsdk-lzma emcmake cmake .. -DHOST_BINARY_DIR=$(pwd)/build-host -DCMAKE_BUILD_TYPE=RelWithDebInfo -DOPTION_USE_ASSERTS=OFF
|
|
docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build emsdk-lzma emmake make -j5
|
|
```
|
|
|
|
And now you have in your build folder files like "openttd.html".
|
|
|
|
To run it locally, you would have to start a local webserver, like:
|
|
|
|
```
|
|
cd build
|
|
python3 -m http.server
|
|
````
|
|
|
|
Now you can play the game via http://127.0.0.1:8000/openttd.html .
|