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annotate pyntnclick/cursor.py @ 692:d6ded808cc33 pyntnclick

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Much scene management refactoring.
author Jeremy Thurgood <firxen@gmail.com>
date Tue, 14 Feb 2012 13:39:05 +0200
parents 6d75895477ac
children c8b683dd56d3
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1 # cursor.py
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2 # Copyright Boomslang team, 2010 (see COPYING File)
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3 # Sprite Cursor
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4
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5 from pygame.sprite import Sprite, RenderUpdates
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6 import pygame
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7 import pygame.color
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8 import pygame.cursors
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9 import pygame.mouse
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10
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11 from pyntnclick.engine import Screen
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12
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13
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14 class CursorSprite(Sprite):
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15 "A Sprite that follows the Cursor"
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16
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17 def __init__(self, filename, x=None, y=None):
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18 Sprite.__init__(self)
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19 self.filename = filename
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20 self.pointer_x = x
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21 self.pointer_y = y
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22 self.highlighted = False
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23
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24 def load(self, resources):
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25 if not hasattr(self, 'plain_image'):
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26 self.plain_image = resources.get_image('items', self.filename)
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27 self.image = self.plain_image
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28 self.rect = self.image.get_rect()
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29
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30 if self.pointer_x is None:
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31 self.pointer_x = self.rect.size[0] // 2
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32 if self.pointer_y is None:
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33 self.pointer_y = self.rect.size[1] // 2
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34
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35 self.highlight = pygame.Surface(self.rect.size)
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36 color = pygame.color.Color(255, 100, 100, 0)
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37 self.highlight.fill(color)
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38
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39 def update(self):
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40 pos = pygame.mouse.get_pos()
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41 self.rect.left = pos[0] - self.pointer_x
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42 self.rect.top = pos[1] - self.pointer_y
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43
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44 def set_highlight(self, enable):
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45 if enable != self.highlighted:
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46 #XXX: Do we need this? self.load()
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47 self.highlighted = enable
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48 self.image = self.plain_image.copy()
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49 if enable:
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50 self.image.blit(self.highlight, self.highlight.get_rect(),
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51 None, pygame.BLEND_MULT)
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53
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54 HAND = CursorSprite('hand.png', 12, 0)
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56
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57 class CursorScreen(Screen):
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58 """A Screen with custom cursors"""
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59
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60 def setup(self):
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61 self._cursor_group = RenderUpdates()
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62 self._loaded_cursor = None
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63 self.set_cursor(None)
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64
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65 def on_enter(self):
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66 super(CursorScreen, self).on_enter()
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67 pygame.mouse.set_visible(0)
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69 def on_exit(self):
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70 super(CursorScreen, self).on_exit()
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71 pygame.mouse.set_visible(1)
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72
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73 def draw(self, surface):
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74 super(CursorScreen, self).draw(surface)
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75 self.set_cursor(self.game.tool)
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76 self._loaded_cursor.set_highlight(self.cursor_highlight())
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77 self._cursor_group.update()
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78 self._cursor_group.draw(surface)
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80 def set_cursor(self, item):
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81 if item is None or item.CURSOR is None:
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82 cursor = HAND
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83 else:
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84 cursor = item.CURSOR
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85 if cursor != self._loaded_cursor:
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86 self._loaded_cursor = cursor
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87 self._loaded_cursor.load(self.gd.resource)
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88 self._cursor_group.empty()
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89 self._cursor_group.add(self._loaded_cursor)
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91 def cursor_highlight(self):
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92 return self.container.mouseover_widget.highlight_cursor