The nuclear age brought more than incredible energy, it spawned an era of mad scientists with wicked ambitions. You, being the maddest of scientists, have developed a method for animating and controlling slime to create an army unlike any before. Attack of the Gelatinous Blob is a Real Time Strategy (RTS) game placing the player in the role of the Mad Scientist. Progress through levels, destroying cities while fighting off the army. Build support structures to defend your base and enhance your blobs; blobs that have the unique ability to morph their composition and skills depending on what they absorb throughout the map. With your horde of blobs and arsenal of doomsday weapons, you will conquer the defiant humans!
I decided to try a monochromatic style for representing build zones: areas where you can and cannot build. Gray areas you cannot build in, colored areas you can.
Technically it wasn't too difficult. There is another filter pass made on the rendered scene that checks for any objects that have been flagged as not-grayscale, then it uses that information to keep the color in those regions. Each building has an invisible dome around it that has the not-grayscale attribute, and that way it looks like there are radially generated regions you can build in. I will provide a more in-depth technical description of how it is done, with some source code, in the coming week.