Unit movement

Unit movement

Terminology

Move

• 'move' commands specify a smooth change in the object position
  • all points on the path between the old and new position should be valid during a move
  • the server may check the above condition to prevent players from cheating
  • the client may interpolate move commands to display a smooth player movement
• moveTo: Instantly move to a destination, given by absolute coordinates
• moveBy: Instantly move to a destination, specified relatively to the current position
• moveTowards: Move in a straight line towards a specified position, with a given speed

Teleport

• 'teleport' commands specify an instantaneous change in the object position
  • there does not need to be a path between the old and new position
  • the client should immediately update the unit position without smoothing
• teleportTo: see above
• teleportBy: see above

Current state: Server

• Decoder

  • File: server/decoder/game.coffee
  • Function: Protocol.createDecoder (callback setup)
  • Caller: [Network]
  • Callee: Sandbox

• Sandbox

  • File: server/sandbox.coffee
  • Function: teleport
  • Caller: Decoder
  • Callee: Combatlog event teleport

• Combatlog

  • Calls teleport on WorldObject

• WorldObject

  • File: server/game/WorldObject.coffee
  • Function: teleport
  • Caller: Combatlog
  • Callee: Terrain
  • Callee: Emits position-change-teleport

• Terrain

  • File: shared/terrain/terrain.coffee
  • Function: teleport
  • Caller: WorldObject

• Encounter

  • File: server/game/encounter
  • Function: createUnit (callback setup)
  • Caller: WorldObject
  • Callee: [Network]

Current state: Client

• Decoder

  • File: client/decoder.coffee
  • Function: MOVE

• World

  • File: client/world.coffee
  • Function: unitDidMoveTo

• Unit

  • File: client/unit.coffee

• Client

  • File: client/client.coffee

• Terrain