Greenstone [working title]

Play it here

GPU cellular automata for circuit simulation. I designed the rules as a tradeoff between complexity in possible states and complexity in components and circuits, in addition to having these rules be potentially implemented in 3d and with limited power.

Usage

Click to draw cells.

Save: Right-click on the state and save the image

Load: Drag/drop a saved image onto the canvas

This means you can build circuits using an image editing program

Key Bindings

• Enter: Step by one frame
• Space: Toggles running
• 1: Select brushType Empty
• 2: Select brushType GreenWire
• 3: Select brushType BlueWire
• 4: Select brushType Connector
• 5: Select brushType Source
• 6: Select brushType Sink

Materials

• Empty
• Green Wire
• Blue Wire
• Connector
• Source
• Sink

States

Wire

• Powered
  • 128 power levels
• Falling Edge
• Off

Variants

• Green
• Blue
• Connector (Green & Blue layered on top of each other)

Connector

• On (Powered Green OR Powered Blue)
• Off

Source

• Active
• Inactive

Sink

• Active
• Inactive

Transitions (in order of precedence)

Wire (green/blue)

Neighbor:

• Active Sink -> Falling Edge
• Active Source -> Max power level

Wire (green/blue/connector)

Neighbor that shares a color and has the max power of neighbors:

• Greater-or-equal power -> power minus one (zero power is off)
• Lesser power -> Falling Edge

Default: Off

Source

Neighbor:

• Off Connector -> inactive

Default: On (the following neighbor behaviors are caused by this)

• No connectors -> active
• All On Connectors -> active
• Falling Edge Connector -> active

Sink

Neighbor:

• On Connector -> active

Default: Off (the following neighbor behaviors are caused by this)

• No connectors -> inactive
• All Off Connectors -> inactive
• Falling Edge Connector -> inactive