nqpz / flowamok

:boom: Traffic simulation :boom:

FLOWAMOK

A traffic simulation for the ages. Maybe a game at some point.

It's a stencil and then some. Work in progress!

What it looks like

import "animation"
module scenarios = import "explorer/scenarios"
module anim = mk_anim scenarios.overlapping_tight_cycles
def init = anim.init
def step = anim.step

> :video (step, init 30i64 30i64 10i64 123i32, 400i64)

Basic building

Requires Futhark and SDL2 and SDL2-ttf libraries with associated header files.

First run futhark pkg sync once. Then choose which interface you want to build (currently only one).

You can configure backends and frontends as described in https://github.com/diku-dk/lys#configuring-the-backend. You can also put these custom LYS_* variables in a file custom.mk, which will then be read by the Makefile.

Road Designer

Design your own road network as the simulation is running.

Run make designer/designer && designer/designer to build and run in a window.

Controls

• F1: Toggle text in upper-left corner.
• Space: Pause/unpause the simulation.
• r: Reset the simulation.
• Left-click mouse and move cursor around to build roads.

Scenario explorer

Explore different hand-crafted scenarios.

Run make explorer/explorer && explorer/explorer to build and run in a window.

Controls

• F1: Toggle text in upper-left corner.
• Space: Step through the simulation manually.
• Left arrow key: Move left in the list of scenarios.
• Right arrow key: Move left in the list of scenarios.
• a: Toggle auto-stepping.
• p: Toggle whether to support cycles and similar perfect but slow simulation.
• Up arrow key: Increment the steps per second in the auto-stepping mode.
• Down arrow key: Decrement the steps per second in the auto-stepping mode.
• r: Reset the current grid and stop auto-stepping.
• 1: Zoom in.
• 2: Zoom out.