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The process of creating a human or computer agent in Colored Trails is very simple. For human agents, one can directly use the graphical user interface (GUI) classes available in CT. Unless customization is needed, the researcher is freed of having to code separate agents. But even when the experiment requires custom UI elements, adding them to the existing GUI class structure is easy (see below Customization Customizing the GUI). For computer agents, one needs to implement a class handling the specific actions or moves required by that agent. CT provides a message-handling infrastructure for the low-level message-passing, reordering and guaranteed delivery. The developer only needs to specify, in game terms (e.g., board movements, chipset exchanges) what the agent is supposed to do, i.e., implement the agent's static or adaptive strategy.
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