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update cost and evaluation function

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This commit is contained in:
Dominik Cupał 2021-04-27 22:30:25 +02:00
parent 7098fa397e
commit 799e8df4d3
2 changed files with 7 additions and 4 deletions
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9
app/a_star.py
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@ -57,14 +57,16 @@ class AStar(Graphsearch):
break
@staticmethod
def g(board: Board, node: Node) -> int:
def g(board: Board, node: Node) -> tuple[int,int]:
"""cost function"""
result = 0
i = 0
while node.get_node() is not None:
field = board.get_field(node.get_x(), node.get_y())
result += field.get_value()
node = node.get_node()
return result
i += 1
return result, i
@staticmethod
def h(node: Node) -> int:
@ -75,7 +77,8 @@ class AStar(Graphsearch):
@staticmethod
def f(board: Board, node: Node) -> int:
"""evaluation function"""
return AStar.g(board, node) + AStar.h(node) + VALUE_OF_MOVEMENT
cost_value, amount_of_moves = AStar.g(board, node)
return cost_value + AStar.h(node) + amount_of_moves * VALUE_OF_MOVEMENT
@staticmethod
def search(fringe: PriorityQueue, explored: Queue, istate: Node,

2
config.py
View File

@ -67,7 +67,7 @@ A_FERTILIZE = "fertilize"
A_DO_NOTHING = "do nothing"
# Costs movement and fields:
VALUE_OF_MOVEMENT = 8
VALUE_OF_MOVEMENT = 4
VALUE_OF_CROPS = 1
VALUE_OF_PLANT = 3
VALUE_OF_SAND = 7