rccargo

rccargo

RC-Car Simulator

• ODE physics
• 1/10 scale RC-Car
• Multiplayer support(now:websocket -> future:WebRTC-base)
• Gamepad or Mouse or Touch Input

DEMO: https://rccargo.arukascloud.io

Build and Run

OS-X

brew install ode --with-shared --with-double-precision
go get -u github.com/ianremmler/ode
go get -u github.com/nobonobo/rccargo
cd $GOPATH/src/github.com/nobonobo/rccargo; rcccargo

Linux

• ode install (./configure --with-shared --with-double-precision --with-libccd)

go get -u github.com/ianremmler/ode
go get -u github.com/nobonobo/rccargo
cd $GOPATH/src/github.com/nobonobo/rccargo; rcccargo

Open Browser

open http://localhost:8080/

Frontend

• gopherjs base
• three.js

Backend

• go websocket and static-files server
• world simulation by ode

Open Dynamics Engine

Site: http://www.ode.org

go-wrapper: https://github.com/ianremmler/ode

document: https://godoc.org/github.com/ianremmler/ode

Concept

• scale 1/10 only.
• one type chassis 4wd+RS540 only.
• no gimmick.
• no customize.
• player camera human-eye only.
• reply camera few pos variety.
• free-run style.
• ghost of fastest-lap.
• physics-sim-server
• webgl-renderer+player-input

coordinate system

GL: right-hand

• X: left(-)-right(+)
• Y: front(+)-back(-)
• Z: up(+)-down(-)

world params

world parameters: - ERP = 0.8 - CFM = 1.0e-5 - gravity = -9.8m/s2(Z)

ode compositions

• World(motion-space)

  • Body
    • Mass
    • Data

• Space(collision space)

  • Geom
    • Data

join and update sequence

1. open brouwser assets/index.html
2. ws connect to host/ws
3. new vehicle add to world
4. jsonrpc call "World.Update"
5. World render by WebGL
6. repeat to 4.