import tkinter

def hit_check_rect():
    dx = abs((x1 + w1/2) - (x2 + w2/2))
    dy = abs((y1 + h1/2) - (y2 + h2/2))
    if dx <= w1/2 + w2/2 and dy <= h1/2 + h2/2:
        return True
    return False

def mouse_move(e):
    global x1, y1
    x1 = e.x - w1/2
    y1 = e.y - h1/2
    col = 'blue'
    if hit_check_rect() == True:
        col = 'cyan'
    canvas.delete('RECT1')
    canvas.create_rectangle(x1, y1, x1 + w1, y1 + h1, fill = col, tag = 'RECT1')

root = tkinter.Tk()
root.title('用矩形進行碰撞偵測')
canvas = tkinter.Canvas(width = 600, height = 400, bg = 'white')
canvas.pack()
canvas.bind('<Motion>', mouse_move)

x1 = 50
y1 = 50
w1 = 120
h1 = 60
canvas.create_rectangle(x1, y1, x1 + w1, y1 + h1, fill = 'blue', tag = 'RECT1')

x2 = 300
y2 = 100
w2 = 120
h2 = 160
canvas.create_rectangle(x2, y2, x2 + w2, y2 + h2, fill = 'red')

root.mainloop()