Z 排序控件，控件顶部和底部的碰撞检测

Question

我正在 pygame 中创建控件（仅完成按钮和标签，以及为控件设置工具提示）。我正在以正确的 Z 顺序绘制控件，但我正在尝试检测鼠标是否在另一个控件上，因此它只会激活可见的控件。

如果您删除 test.set_on_bottom(btnButton7)，这在一定程度上会起作用，它只会触发 button7，即使鼠标位于其下方的其中一个按钮上，但如果您单击下方的其中一个按钮button7 并将鼠标移到 button7 上它仍然认为原始按钮正在被点击（当它不应该被点击时）

几天来我一直在为这个问题绞尽脑汁，但就是想不通。

（另外，我今天早上才想到，但我应该把每个控件都变成一个 class 而不是一个 id，所以稍后会重新处理）

代码太长post，这里是pastebin link

设置状态和触发消息的所有处理都在 process_events 方法中完成

def process_events(self):
    button = pygame.mouse.get_pressed()
    mouse_pos = pygame.mouse.get_pos()

    for control_id in reversed(self.__z_order):
        state = self.__control_list[control_id]['state']

        if state in ('deleted', 'disabled') or not self.__control_list[control_id]['draw']:
            continue

        if self.__control_list[control_id]['rect'].collidepoint(mouse_pos):
            # left mouse is pressed
            if button[0]:
                # current state of this control is hot and left mouse is pressed on it
                if state == 'hot':
                    for x in self.__z_order[0:control_id - 1]:
                        if self.__control_list[x]['state'] == 'pressed':
                            self.__control_list[x]['state'] = 'normal'
                    can_change = True
                    for x in self.__z_order[control_id + 1:]:
                        if self.__control_list[x]['state'] == 'pressed':
                            can_change = False
                            break
                    # change the state to pressed
                    if can_change:
                        self.__control_list[control_id]['state'] = 'pressed'
                        self.__control_list[control_id]['mouse_pos_lclick'] = None
                        self.__control_list[control_id]['mouse_pos_ldown'] = mouse_pos
                        if self.__control_list[control_id]['on_hover_called']:
                            self.__draw_tip = None

                        if (time.clock() - self.__control_list[control_id][
                            'dbl_timer'] >= self.__dbl_click_delay) and \
                                (time.clock() - self.__control_list[control_id]['timer'] <= self.__dbl_click_speed):
                            if self.__event_mode:
                                if self.__control_list[control_id]['on_dbl_lclick']:
                                    self.__control_list[control_id]['on_dbl_lclick']()
                            else:
                                self.__messages.append(self.Message(control_id, PGC_LBUTTONDBLCLK))
                                # print('Double click', self.__control_list[control_id]['text'])
                            self.__control_list[control_id]['dbl_timer'] = time.clock()
                            self.__control_list[control_id]['timer'] = -1
                        break
    # go through the controls from top to bottom first
    for control_id in reversed(self.__z_order):
        state = self.__control_list[control_id]['state']

        if state in ('deleted', 'disabled') or not self.__control_list[control_id]['draw']:
            continue

        # check if the mouse is over this control
        if self.__control_list[control_id]['rect'].collidepoint(mouse_pos):
            # left mouse is not down
            if not button[0]:
                # state is currently pressed
                if state == 'pressed':
                    # check if there's a timer initiated for this control
                    # this prevents 2 clicks + a double click message
                    if self.__control_list[control_id]['timer'] >= 0:
                        self.__control_list[control_id]['dbl_timer'] = -1
                        self.__control_list[control_id]['timer'] = time.clock()
                        # if the event mode
                        if self.__event_mode:
                            # call the function if there is one
                            if self.__control_list[control_id]['on_lclick']:
                                self.__control_list[control_id]['on_lclick']()
                        else:
                            # post the message to the messages queue
                            self.__messages.append(self.Message(control_id, PGC_LBUTTONUP))
                            # print('Click', self.__control_list[control_id]['text'])
                    # the timer is < 0 (should be -1), double click just happened
                    else:
                        # reset the timer to 0 so clicking can happen again
                        self.__control_list[control_id]['timer'] = 0
                    # go through all of the ids below this control
                    for x in self.__z_order[0:control_id - 1]:
                        # set all the hot controls to normal
                        if self.__control_list[x]['state'] == 'hot':
                            self.__control_list[x]['state'] = 'normal'
                    can_change = True
                    # go through all the controls on top of this control
                    for x in self.__z_order[control_id + 1:]:
                        # something else is on top of this and it's already hot, can't change this control
                        if self.__control_list[x]['state'] == 'hot':
                            can_change = False
                            break
                    if can_change:
                        self.__control_list[control_id]['state'] = 'hot'
                        self.__control_list[control_id]['mouse_pos_lclick'] = mouse_pos
                        self.__control_list[control_id]['mouse_pos_ldown'] = None

                # state is not currently hot (but we're hovering over this control)
                elif state != 'hot':
                    # check for any other contorls
                    for x in self.__z_order[0:control_id - 1]:
                        if self.__control_list[x]['state'] == 'hot':
                            self.__control_list[x]['state'] = 'normal'
                    can_change = True
                    for x in self.__z_order[control_id + 1:]:
                        if self.__control_list[x]['state'] == 'hot':
                            can_change = False
                            break
                    # change the state to hot
                    if can_change:
                        self.__control_list[control_id]['state'] = 'hot'
                        self.__control_list[control_id]['mouse_pos_hover'] = mouse_pos
                        # used to start a tooltip (needs work)
                        self.__control_list[control_id]['mouse_pos_rect'] = pygame.Rect(mouse_pos[0] - 7,
                                                                                        mouse_pos[1] - 7,
                                                                                        mouse_pos[0] + 7,
                                                                                        mouse_pos[1] + 7)
                # state is currently 'hot'
                else:
                    # timer for on_hover hasn't been initialized
                    if self.__control_list[control_id]['timer_on_hover'] == 0:
                        self.__control_list[control_id]['timer_on_hover'] = time.clock()
                    # mouse is in the area
                    if self.__control_list[control_id]['mouse_pos_rect'].collidepoint(mouse_pos):
                        # if the on_hover hasn't been triggered and there is a timer for the on_hover
                        if not self.__control_list[control_id]['on_hover_called'] and self.__control_list[control_id]['timer_on_hover']:
                            # if the mouse has been in the hover area for 1.5 seconds or more
                            if time.clock() - self.__control_list[control_id]['timer_on_hover'] >= 1.5:
                                # trigger the hover
                                self.__control_list[control_id]['on_hover_called'] = True
                                # on_hover is a function call, call the function
                                if self.__control_list[control_id]['on_hover']['type'] == 'function':
                                    self.__control_list[control_id]['on_hover']['func'](self.__control_list[control_id]['on_hover']['args'])
                                # on_hover is a tip, set the self.__draw_tip variable to the tip we need
                                else:
                                    self.__draw_tip = self.__control_list[control_id]['on_hover'].copy()
                                    self.__draw_tip['rect'].x = mouse_pos[0]
                                    self.__draw_tip['rect'].y = mouse_pos[1]

        # mouse is not in the control rect and the state is not currently normal
        elif state != 'normal':
            # set it to normal
            self.__control_list[control_id]['state'] = 'normal'
            # clear the on_hover stuff
            if self.__control_list[control_id]['on_hover_called']:
                self.__control_list[control_id]['on_hover_called'] = False
                self.__draw_tip = None
            if self.__control_list[control_id]['timer_on_hover']:
                self.__control_list[control_id]['timer_on_hover'] = 0

Answer 1

（明天24小时超时后，将select作为正确答案）

终于搞清楚了。我太复杂了。

反向浏览控件列表，第一个 .collidepoint 成功的控件，保存该控件并打破循环
检查所有控件和一个未禁用且当前不正常的控件，设置为正常

根据需要使用已保存的控件

def process_events(self):
    button = pygame.mouse.get_pressed()
    mouse_pos = pygame.mouse.get_pos()
    top_id = -1

    for control_id in reversed(self.__z_order):
        if self.__control_list[control_id]['state'] != 'disabled' and \
                self.__control_list[control_id]['draw'] and \
                self.__control_list[control_id]['rect'].collidepoint(mouse_pos):
            top_id = control_id
            break

    if top_id != -1:
        # go through all of the controls
        for control_id in self.__z_order:
            # skip the top most control and any that are disabled/deleted
            if self.__control_list[control_id]['state'] != 'disabled' and \
                            self.__control_list[control_id]['state'] != 'normal' and \
                            control_id != top_id:
                # set it to normal
                self.__control_list[control_id]['state'] = 'normal'
                # clear the on_hover stuff
                if self.__control_list[control_id]['on_hover_called']:
                    self.__control_list[control_id]['on_hover_called'] = False
                    self.__draw_tip = None
                if self.__control_list[control_id]['timer_on_hover']:
                    self.__control_list[control_id]['timer_on_hover'] = 0
    else:
        for control_id in self.__z_order:
            if self.__control_list[control_id]['state'] != 'disabled':
                # set it to normal
                self.__control_list[control_id]['state'] = 'normal'
                # clear the on_hover stuff
                if self.__control_list[control_id]['on_hover_called']:
                    self.__control_list[control_id]['on_hover_called'] = False
                    self.__draw_tip = None
                if self.__control_list[control_id]['timer_on_hover']:
                    self.__control_list[control_id]['timer_on_hover'] = 0
        return

    if button[0]:
        # current state of this control is hot and left mouse is pressed on it
        if self.__control_list[top_id]['state'] == 'hot':
            self.__control_list[top_id]['state'] = 'pressed'
            self.__control_list[top_id]['mouse_pos_lclick'] = None
            self.__control_list[top_id]['mouse_pos_ldown'] = mouse_pos
            if self.__control_list[top_id]['on_hover_called']:
                self.__draw_tip = None

            if (time.clock() - self.__control_list[top_id][
                'dbl_timer'] >= self.__dbl_click_delay) and \
                    (time.clock() - self.__control_list[top_id]['timer'] <= self.__dbl_click_speed):
                if self.__event_mode:
                    if self.__control_list[top_id]['on_dbl_lclick']:
                        self.__control_list[top_id]['on_dbl_lclick']()
                else:
                    self.__messages.append(self.Message(top_id, PGC_LBUTTONDBLCLK))
                    # print('Double click', self.__control_list[top_id]['text'])
                self.__control_list[top_id]['dbl_timer'] = time.clock()
                self.__control_list[top_id]['timer'] = -1
    elif not button[0]:
        # state is currently pressed
        if self.__control_list[top_id]['state'] == 'pressed':
            # check if there's a timer initiated for this control
            # this prevents 2 clicks + a double click message
            if self.__control_list[top_id]['timer'] >= 0:
                self.__control_list[top_id]['dbl_timer'] = -1
                self.__control_list[top_id]['timer'] = time.clock()
                # if the event mode
                if self.__event_mode:
                    # call the function if there is one
                    if self.__control_list[top_id]['on_lclick']:
                        self.__control_list[top_id]['on_lclick']()
                else:
                    # post the message to the messages queue
                    self.__messages.append(self.Message(top_id, PGC_LBUTTONUP))
                    # print('Click', self.__control_list[top_id]['text'])
            # the timer is < 0 (should be -1), double click just happened
            else:
                # reset the timer to 0 so clicking can happen again
                self.__control_list[top_id]['timer'] = 0
            # go through all of the ids below this control
            for x in self.__z_order[0:top_id - 1]:
                # set all the hot controls to normal
                if self.__control_list[x]['state'] == 'hot':
                    self.__control_list[x]['state'] = 'normal'
            can_change = True
            # go through all the controls on top of this control
            for x in self.__z_order[top_id + 1:]:
                # something else is on top of this and it's already hot, can't change this control
                if self.__control_list[x]['state'] == 'hot':
                    can_change = False
                    break
            if can_change:
                self.__control_list[top_id]['state'] = 'hot'
                self.__control_list[top_id]['mouse_pos_lclick'] = mouse_pos
                self.__control_list[top_id]['mouse_pos_ldown'] = None

        # state is not currently hot (but we're hovering over this control)
        elif self.__control_list[top_id]['state'] != 'hot':
            self.__control_list[top_id]['state'] = 'hot'
            self.__control_list[top_id]['mouse_pos_hover'] = mouse_pos
            # used to start a tooltip (needs work)
            self.__control_list[top_id]['mouse_pos_rect'] = pygame.Rect(mouse_pos[0] - 7,
                                                                        mouse_pos[1] - 7,
                                                                        mouse_pos[0] + 7,
                                                                        mouse_pos[1] + 7)
        # state is currently 'hot'
        else:
            # timer for on_hover hasn't been initialized
            if self.__control_list[top_id]['timer_on_hover'] == 0:
                self.__control_list[top_id]['timer_on_hover'] = time.clock()
            # mouse is in the area
            if self.__control_list[top_id]['mouse_pos_rect'].collidepoint(mouse_pos):
                # if the on_hover hasn't been triggered and there is a timer for the on_hover
                if not self.__control_list[top_id]['on_hover_called'] and \
                        self.__control_list[top_id]['timer_on_hover']:
                    # if the mouse has been in the hover area for 1.5 seconds or more
                    if time.clock() - self.__control_list[top_id]['timer_on_hover'] >= 1.5:
                        # trigger the hover
                        self.__control_list[top_id]['on_hover_called'] = True
                        # on_hover is a function call, call the function
                        if self.__control_list[top_id]['on_hover']['type'] == 'function':
                            self.__control_list[top_id]['on_hover']['func'] \
                                (self.__control_list[top_id]['on_hover']['args'])
                        # on_hover is a tip, set the self.__draw_tip variable to the tip we need
                        else:
                            self.__draw_tip = self.__control_list[top_id]['on_hover'].copy()
                            self.__draw_tip['rect'].x = mouse_pos[0]
                            self.__draw_tip['rect'].y = mouse_pos[1]

Z 排序控件，控件顶部和底部的碰撞检测

Z Ordering Controls, collision detection on top and bottom of control

python

pygame

controls

custom-controls

z-order