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Fog hazards can be specified in the game to make gameplay more difficult. Three different methods are used to calculate the amount of fog (fog blending factor) for the game. In each of these methods the fog increases or decreases by different factors. The three factors are:


Linear: Fog blending factor grows linearly. This produces a very sudden, dense fog.


Exponential 1: Grows by a factor of e. Produces a gradual fog that fades from light to heavy.


Exponential 2: Also exponential, but grows by a factor of e squared. Produces a gradual fade from heavy to light, back to heavy.



  • Surface normals for the 3D Pacman characters are precomputed to for more realistic lighting.
  • The same game model is used for the 2D and 3D mode so that a player can easily switch between them.
  • Recursive Backtracking is used when a ghost dies and needs to figure out how to get back home using a move stack.
  • When Pacman is vulnerable, the ghosts pursue him using an algorithm in which they make an intelligent move based on his current location 1/3rd of the time and a random move 2/3rds of the time. Similarly, when Pacman is powered-up, the ghosts evade him using an algorithm in which they make an intelligent decision 1/3rd of the time and a random decision 2/3rds of the time.




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