Terrains Creating an Island.

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Presentation transcript:

Terrains Creating an Island

Find a map that may contain an island.

Zoom in on an island in a map.

Paste it into GIMP.

Crop & convert to grayscale.

Duplicate the layer and work on the duplicate.

Note water depth is actually a negative value Note water depth is actually a negative value. So we’ll set the land to be above sea level . . .

. . . by setting it to 36 (+5 above the deepest water value of -31).

But it’s difficult to distinguish between the values.

So we’ll use 100 for sea level (to spread out the values).

Make a table of values (using a linear relationship). But keep the gray values between [0..255] inclusive.

Alternative: Creating binary terrains with Java Use FileOutputStream for binary output. (System.out.println produces ASCII text output.) Write a Java program that creates a file of 1000*1000 integer values in the range [0.255]. Be creative. You may wish to use sin, cos, tan, pow, etc. Load your file into GIMP. Send and print your program and a screen dump of the result in GIMP to me.

Extra: Simply check your raw file in GIMP by creating a .pgm file. Add the following to your code right before you write out the raw bytes: String s = “P5\n1000 1000\n255\n"; Using the FileOutputStream, write out the above before you write any raw data.

Bring your new Terrain into Unity Terrain --> Create Terrain Terrain --> Import Heightmap – Raw Then proceed working on Chapter 2: Environments in Unity Game Development Essentials.