Penbased Mapper

1
Pen-based Mapper

• Carl LeCompte
• Alan Vangpat
• Edmund Huber

2
The idea

• What is something we like to do ...
• ... and how can we apply the pen to it?
• We like to play adventure games!
• What's something tedious about adventure games?
• Sketching surroundings on paper and erasing and
  redrawing and making a general mess of things.

3
Concept drawings
4
First Prototype
5
Second Prototype
6
Final Product
7
Implementation

• A 'map' is saved in three layers a fill layer, a
  wall layer, and an object layer
• Each floor defines the walls, fills, and objects
  within it
• Drawing begins at the fill layer and works
  upwards, drawing the objects of each layer in
  whatever order they happen to be in
• Transparent fills use a buffered image of the
  state of below floors
• The interactive mode simply reads the data from
  the edit mode and displays it

8
Implementation

• We use Microsoft's API for ink and gesture
  recognition
• Strokes are processed into geometry (lines and
  squares), which are simpler to deal with
• Fills and walls are read from a configuration
  file at runtime and allow for dynamic loading of
  new textures
• Player movements are processed against the walls
  and door objects to determine validity
• To save and load serialize to disk and
  deserialize from disk

9
Future improvements

• Further playtesting to tease out bugs
• Interface tuneups