What is Green Wa-tor?

Wa-tor is a computer-based simulation of the competition for survival between sharks and fish. The three-dimensional image of the ocean is spread over the surface of a perforated donut-shaped planet. On a computer, it is represented as a sea where the top and bottom edges of the screen and the right and left edges are connected. For details, see Wikipedia.

Green Wa-tor simulates the Wa-tor sea when it is contaminated with plastic.

Download "Green Wa-tor" on Google Play

Wa-tor simulation

There are sharks and fish in the Wa-tor sea. Sharks and fish make their own movements every unit time.
Fish movement: The sea is rich in invisible plankton, so fish swim freely and breed at regular intervals.
Shark movements: Sharks swim freely in the ocean and prey on fish around them. If they cannot prey on fish for a certain period of time, they will starve to death. If they do not starve, they will breed at regular intervals.

Green Wa-tor simulation

In addition to Wa-tor behavior, Green Wa-tor has the following behaviors:
Every unit time, the sea is contaminated with plastic at a constant rate.
Fish swim freely in the ocean, but they mistake plastic for food and eat it. Fish will die if they eat more plastic than they can withstand.
Sharks are smart and don't eat plastic. However, since it is not possible to distinguish between fish that ate plastic and fish that did not, they prey on both. The plastic that the fish ate also accumulates in the shark, and if the plastic capacity of the shark is exceeded, the shark will die.
After the fish and sharks die, if they were eating plastic, you can set the simulation conditions to remain as plastic or corpses.

What is the end of Green Wa-tor?

Enjoy changing the simulation settings.

Graphics description

Light blue: shark
Purple: Sharks having ingested plastic
Green: fish
Yellow: Fish having ingested plastic
White: plastic
Red: Carcasses of sharks having ingested plastic
Orange: Carcasses of fish having ingested plastic

Summary of setting values

Settings
Number of fish: Maximum initial value of fish
Breeding of fish: Fish breed every time this unit time elapses. Maximum value.
Number of shark: Maximum initial shark value
Breeding of shark: Sharks breed every time this unit time elapses. Maximum value.
Starve of shark: Sharks starve if they cannot prey on fish within this unit time
Plastic rate: Number of plastics increasing per unit time (maximum value)
Fish durability against plastic: The number of plastics that fish die when eaten
Shark durability against plastic: The number of plastics that sharks die when ingested

Display settings
Square: The simulation graphics are represented by a rectangle. Simulation speed is fast.
Image: An image of the graphics of the simulation. Simulation speed is slow.
Graphics size: Vertical and horizontal sizes of sharks and fish. The larger the image, the rougher the image.
Interval time(ms): The unit time of the simulation. Even if it is set small, it will be slow if the calculation cannot catch up.

Rule setting
Settings when sharks or fish die after eating plastics
they go back to plastics: Return to Plastic. Plastic has a concentration but is indistinguishable.
they become corpsed: Sharks and fish remain as carcasses

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