This is fluid simulation and terrain editing toy written in C. The project is playable in the browser thanks to emscripten.
Play here: https://benkt1.itch.io/sandbox
- Add white color to edges / fast moving water to look like foam.
- Rendering doesn't work properly while autogenerating map adn scropping through coordinates, somethign to do with multithreading.
- Add water to terrain generation.
- Add erosion brush.
- Make windbrush follow the direction and speed of the mouse.
- Bug: Water velocity is messed up at the edge of the map, causes foam to spawn.
- Make map buffers allocated.
- Make map resizable.
- Make starting camera position adjust to center over map regardless of size.
- Try adding particles that spawn foam. use these as spawners for foam to get better looking foam transport.
- Add all camera controls to mouse.
- Add touch support.
- Foam and sand transport doesn't work very good, mass isn't constant. Something to do with the advection, fix that.
- Get nicer colors for stuff.
- Make the html look nicer.
- Make sediment have color that gets transported with the sediment.
- Split map into chunks, each chunk should keep track of what sort of fluids/sand it contains so it only need to update what is present.
- Seperated rendering and simulation into seperate threads.
- Bug: Lava and mist bleeds over to the other side of the map if you add it over the map edge.
- Add a version number.
- Make transparent things sample the background framebuffer.
- Move zooming camera to a function so the same code isn't everywhere.
- [-]
Move rendering to different layers. - Make sure colors cannot overflow.
- Move simulation functions into its own .c file
- [-]
Move project to Clion - Add back lava.
- Add back mist.
- Move drawPoint and drawLine into window.c
- Add back foam.
Drawcolumn borde funkar bra att multithreada, problem kanske med map data som finns i flera kolumner samtidigt. DÅ kan jag dela in skärmen i grupper med kolumner och så kör jag förs en batch med trådar som tar varannan grupp och sedan när dom är klara tar jag resten. På så sätt borde inte någon data hanteras av flera trådar samtidigt. Samma princip borde gå att applicera på simuleringen, Jag delar in kartan i segment och kör dom i två omgångar på så sätt att ingen tråd nuddar samma data samtidigt.
Istället för att gå igenom varje cell och kolla efter celler som är lägre (Då måste vi kolla 9 celler för varje cell). Så kan vi gå igenom varje cell och kolla efter celler som är högre
Build by running make with command: C:\msys64\usr\bin\make.exe
Visa källkod i firefox, lägg i länkarn -gsource-map --source-map-base http://127.0.0.1:5500/
från gammalt projekt //emcc main.c -std=c17 -s WASM=1 -s USE_SDL=2 -s -s USE_SDL_IMAGE=2 -s DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR=0 -s SDL2_IMAGE_FORMATS='["png"]' -s TOTAL_MEMORY=536870912 -s USE_PTHREADS=1 -s PTHREAD_POOL_SIZE=4 ^C-preload-file assets -O3 --profiling -o index.js
J. O’Brien and J. K. Hodgins. Dynamic simulation of splash- ing fluids. In Proceedings of Computer Animation’95, pages 198–205, 1995. https://smartech.gatech.edu/bitstream/handle/1853/3599/94-32.pdf
Fast Hydraulic Erosion Simulation and Visualization on GPU Xing Mei, Philippe Decaudin, Bao-Gang Hu https://hal.inria.fr/file/index/docid/402079/filename/FastErosion_PG07.pdf
Paste this in launch.json, this disables CORS as well as enables multithreading in wasm
{ // Use IntelliSense to learn about possible attributes. // Hover to view descriptions of existing attributes. // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387 "version": "0.2.0", "configurations": [ { "type": "chrome", "request": "launch", "name": "Launch Chrome against localhost", "url": "http://127.0.0.1:5500/index.html", "webRoot": "${workspaceFolder}", "runtimeArgs": ["--disable-web-security","--user-data-dir=c:\chrome-browser", "--js-flags=--experimental-wasm-threads", "--enable-features=WebAssembly,SharedArrayBuffer"] } ] }