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For the predator-prey model, most conventional researches have focused on the food chain. In recent computer game and movies, simulation of natural phenomena has been increased. Realistic simulation is a key to the simulation of natural phenomena. It also comes in as an important role when simulating predator-prey chasing. Various factors must be put into consideration - such as physical condition, emotion of the predator, and the environment of the pursuit - when creating a realistic simulation of predator-prey chasing. It is not easy to simulate by reflecting all factors independently. Thus, this paper assumes that these independent variables are converted in terms of energy for the pursuit. It will simulate the situation of a predator chasing a prey using the “energy for the pursuit”. To do this, we proposed the consumed energy by using steering force based on Newton's law and the needed energy based on physics theory for a predator to move a distance as maximum velocity. A number of experiments were conducted in order to show the correctness of the proposed energies. Through experiments, this paper illustrates that the proposed energy models are well suited for natural pursuit.

A Simulation for a Predator to Pursuit a Prey Based on Energy