回答此问题可获得 20 贡献值,回答如果被采纳可获得 50 分。
<p>我在画布上画了一个网格,在一些单元格里画了一个圆圈。我的目标是绕着网格移动一圈,而不是越过另一圈。所以当我移动圆的时候,我检查是否有东西在移动,如果有,取消移动。首先,我试着在运动结束时检查碰撞情况,但我没能让它工作。所以我试着在移动时检查,但是我意识到画布线也是对象,所以有碰撞。
有没有什么“简单”的方法可以忽略这些线的碰撞而不是圆的碰撞?你知道吗</p>
<pre><code>class Deplacement:
def __init__(self, canvas, event):
self.x = event.x
self.y = event.y
self.canvas = canvas
self.obj = "à déterminer"
self.obj2 = "à déterminer"
self.couleur = "à déterminer"
self.couleur2 = "à déterminer"
self.collision = "à déterminer"
canvas.bind("<ButtonPress-1>", self.StartMove)
canvas.bind("B1-Motion", self.OnMotion)
canvas.bind("<ButtonRelease-1>", self.StopMove)
def StartMove(self, event): #Getting the object I want to move
self.x = event.x
self.y = event.y
self.obj = self.canvas.find_overlapping(self.x - 15, self.y - 15, self.x + 15, self.y + 15)
def OnMotion(self, event): #This is where I struggle
#Trying to get the second circle if it exists
self.obj2 = self.canvas.find_overlapping(event.x - 15, event.y - 15, event.x + 15, event.y + 15)
if not self.obj2:
self.collision = False
else:
self.collision = True
def StopMove(self, event): #This works fine, in context, checking items colors to move them or not
#And objects must be moved by one axis
self.couleur = self.canvas.itemcget(self.obj, "fill")
if not self.collision:
if self.couleur == 'black' or self.couleur == 'white' or self.couleur == 'red':
if event.x > self.x and self.y - 10 <= event.y <= self.y + 10:
self.move(event, self.obj)
elif event.x < self.x and self.y - 10 <= event.y <= self.y + 10:
self.move(event, self.obj)
elif event.y > self.y and self.x - 10 <= event.x <= self.x + 10:
self.move(event, self.obj)
elif event.y < self.y and self.x - 10 <= event.x <= self.x + 10:
self.move(event, self.obj)
def move(self, event, obj): #Finally moving objects, works nicely aswell
self.x = (event.x - 20) // 50 + 1
self.y = (event.y - 20) // 50 + 1
self.obj = obj
if event.x < 20:
self.x = 1
self.canvas.coords(self.obj, self.x * 50 - 25, self.y * 50 - 25, self.x * 50 + 15, self.y * 50 + 15)
elif event.y < 20:
self.y = 1
self.canvas.coords(self.obj, self.x * 50 - 25, self.y * 50 - 25, self.x * 50 + 15, self.y * 50 + 15)
elif event.x > 470:
self.x = 9
self.canvas.coords(self.obj, self.x * 50 - 25, self.y * 50 - 25, self.x * 50 + 15, self.y * 50 + 15)
elif event.y > 470:
self.y = 9
self.canvas.coords(self.obj, self.x * 50 - 25, self.y * 50 - 25, self.x * 50 + 15, self.y * 50 + 15)
else:
self.canvas.coords(self.obj, self.x * 50 - 25, self.y * 50 - 25, self.x * 50 + 15, self.y * 50 + 15)
</code></pre>
<p>附言:忽略法语单词。你知道吗</p>