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我正在python 2.7中使用tkinter作爲可視化工具運行生物模擬器。地圖由方塊組成，其中顏色代表土地類型，紅色方塊代表生物。我使用canvas.move將棋盤上的紅色方塊移動。它必須移動很多。但我確切知道它應該從哪裏開始以及應該在哪裏結束。問題在於，大多數情況下，它並沒有移動，而只是消失。在下面的代碼中，我稱之爲在Simulation的init中移動，並且它可以工作。當我在sim.simulate中隨時調用它時，生物就會消失。誰能解釋爲什麼？tkinter的canvas.move使對象消失
class Map():
def __init__(self,):
self.root = Tk()
self.canvas = Canvas(self.root, width=1200, height=1200)
self.canvas.pack()
self.colors = {
"Land": "grey",
"Food": "green",
"Water": "blue",
"Shelter": "black"
}
self.canvasDict = {} # the keys are (x,y, "type"), the data is the id so it can be grabbed for item config.
for i, row in enumerate(land.landMass):
for j, tile in enumerate(row):
color = self.colors[tile.__class__.__name__]
self.canvasDict[i, j, "tile"] = self.canvas.create_rectangle(50 * i, 50 * j, 50 * (i + 1), 50 * (j + 1),
outline=color, fill=color)
info = tile.elevation
if color == "green":
info = tile.vegitation
elif color == "black":
info = tile.quality
self.canvasDict[i, j, "text"] = self.canvas.create_text(50 * i + 3, 50 * j, anchor=NW, fill="white", text=info)
self.canvasDict["creature"] = self.canvas.create_rectangle(0, 0, 50, 50,
outline="red", fill="red")
self.canvas.pack(fill=BOTH, expand=1)
sim = Simulation([], 1, 2, self.root, self.canvas, self.canvasDict)
self.root.after(1000, sim.simulate)
... 等功能 ...
def simulate(self):
self.canvas.move(self.canvasDict["creature"], 1, 1)
if self.generations > 0:
self.root.after(10000, self.canvas.move, self.canvasDict["creature"], 2 * 50, 2 * 50)
...