1. add drawable, moveToNextDraw();
2. paste drawable() function;
1. draw features successfully compiled.
1. temporary commit
1. finish liyu's function;
2. compile successfully
1. add printDownHistory
2. still some problem
1. find bug: confuse steps with dots' number
1. findInnerPoint has some problems;
2. add compCor for comparision of Coordinates objects;
3. modify Coordinates constructor
Note: if you have default constructor function and do nothing. The int
variable will be incorrectly initialed.
1. need to modify:
   1. drawable;
   2. moveToNextDraw
1. safely drawable;
2. need to modify:
   1. moveToNearestPlayer() 1. judge move to who; 2. don't walk on inner
   point