Mercurial > pyntnclick

annotate gamelib/cursor.py @ 499:cfd9c2bb4474

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Make poster only work if JIM is online
author Neil Muller <neil@dip.sun.ac.za>
date Tue, 31 Aug 2010 14:25:09 +0200
parents 92029c76b687
children 0e8487038834
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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 albow.resource import get_image
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6 from albow.widget import Widget
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7 from pygame.sprite import Sprite, RenderUpdates
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8 from pygame.rect import Rect
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9 import pygame
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10 import pygame.color
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11 import pygame.cursors
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12 import pygame.mouse
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13
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14 from gamelib.constants import SCENE_SIZE
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15
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16
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17 class CursorSprite(Sprite):
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18 "A Sprite that follows the Cursor"
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19
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20 def __init__(self, filename, x=None, y=None):
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21 Sprite.__init__(self)
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22 self.filename = filename
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23 self.pointer_x = x
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24 self.pointer_y = y
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25 self.highlighted = False
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26
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27 def load(self):
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28 if not hasattr(self, 'plain_image'):
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29 self.plain_image = get_image('items', self.filename)
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30 self.image = self.plain_image
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31 self.rect = self.image.get_rect()
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32
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33 if self.pointer_x is None:
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34 self.pointer_x = self.rect.size[0] // 2
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35 if self.pointer_y is None:
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36 self.pointer_y = self.rect.size[1] // 2
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37
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38 self.highlight = pygame.Surface(self.rect.size)
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39 color = pygame.color.Color(255, 100, 100, 0)
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40 self.highlight.fill(color)
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41
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42 def update(self):
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43 pos = pygame.mouse.get_pos()
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44 self.rect.left = pos[0] - self.pointer_x
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45 self.rect.top = pos[1] - self.pointer_y
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46
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47 def set_highlight(self, enable):
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48 if enable != self.highlighted:
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49 self.load()
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50 self.highlighted = enable
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51 self.image = self.plain_image.copy()
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52 if enable:
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53 self.image.blit(self.highlight, self.highlight.get_rect(),
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54 None, pygame.BLEND_MULT)
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56
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57 HAND = CursorSprite('hand.png', 12, 0)
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59
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60 class CursorWidget(Widget):
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61 """Mix-in widget to ensure that mouse_move is propogated to parents"""
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62
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63 cursor = HAND
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64 _cursor_group = RenderUpdates()
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65 _loaded_cursor = None
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67 def __init__(self, screen, *args, **kwargs):
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68 Widget.__init__(self, *args, **kwargs)
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69 self.screen = screen
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71 def enter_screen(self):
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72 pygame.mouse.set_visible(0)
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74 def leave_screen(self):
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75 pygame.mouse.set_visible(1)
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76
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77 def draw_all(self, surface):
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78 Widget.draw_all(self, surface)
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79 self.draw_cursor(self.get_root().surface)
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80
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81 def draw_cursor(self, surface):
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82 self.set_cursor(self.screen.state.tool)
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83 self.cursor.set_highlight(self.cursor_highlight())
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84 if self.cursor is not None:
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85 self._cursor_group.update()
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86 self._cursor_group.draw(surface)
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88 def mouse_delta(self, event):
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89 self.invalidate()
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90
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91 @classmethod
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92 def set_cursor(cls, item):
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93 if item is None:
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94 cls.cursor = HAND
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95 else:
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96 cls.cursor = item.CURSOR
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97 if cls.cursor != cls._loaded_cursor:
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98 cls._loaded_cursor = cls.cursor
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99 if cls.cursor is None:
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100 pygame.mouse.set_visible(1)
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101 cls._cursor_group.empty()
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102 else:
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103 pygame.mouse.set_visible(0)
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104 cls.cursor.load()
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105 cls._cursor_group.empty()
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106 cls._cursor_group.add(cls.cursor)
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107
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108 def cursor_highlight(self):
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109 if not Rect((0, 0), SCENE_SIZE).collidepoint(pygame.mouse.get_pos()):
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110 return False
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111 if self.screen.state.highlight_override:
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112 return True
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113 current_thing = self.screen.state.current_thing
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114 if current_thing:
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115 return current_thing.is_interactive()
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116 return False