MyWar, A New Plugin For MyBB - Need Help

[llnn]

Hello!

I am new to php, and wanted help with my code, I wonder if the code is good.

About the plugin, MyWar is a game for two people, the goal of the game is to conquer all the territories on the map.

each type of territory generates a bonus
Forest +30% defense,  +1 population per turn
Mountain +50% defense, +1 population per turn
Strong defense +80%,  +1 population per turn
Cities +0% defense,  +2 population per turn

I have several ideas for mywar, then someone could see the code and help me to improve it?

the image of the map I created using the  civilization 4 (a game), is illegal if I will distribute this image?
And if it is illegal, someone could create a map for mywar?

mywar works in mybb 1.4 and 1.6

sorry for my english