pyhexen/vid.py

   1 import pygame
   2 import struct
   3 import string
   4
   5 class VidException(Exception):
   6         pass
   7
   8 class Video:
   9         def __init__(self):
  10                 self.palette = []
  11
  12         # Stuff from I_* in the C code.
  13         def SetPalette(self, data):
  14                 self.palette = []
  15                 for i in range (0, 768, 3):
  16                         rgb = [ord(x) for x in data[i:i+3]]
  17                         self.palette.append(rgb)
  18                 self.screen.set_palette(self.palette)
  19
  20         def WaitVBL (self):
  21                 pygame.display.flip()
  22
  23         # Stuff from V_* in the C code.
  24         def __blitRaw (self, data, w, h):
  25                 screen = pygame.surfarray.pixels2d (self.screen)
  26                 for y in range(0,h):
  27                         for x in range (0, w):
  28                                 screen[x,y] = ord (data[y * w + x])
  29
  30         def __blitPatch(self, data, x, y, trans = lambda x: x):
  31                 (width, height) = struct.unpack_from ('<hh', data, 0)
  32                 (left_offset, top_offset) = struct.unpack_from('<hh', data, 4)
  33                 column_offsets =  struct.unpack_from('<8i', data, 8)
  34
  35                 # Adjust pos
  36                 x = x - left_offset
  37                 y = y - top_offset
  38
  39                 # Crazy column/patch thing to buffer
  40                 screen = pygame.surfarray.pixels2d (self.screen)
  41                 for x_ofs in range (0, width):
  42                         col_ofs = struct.unpack_from ('<i', data, 8 + 4 * x_ofs)[0]
  43                         topdelta = ord (data[col_ofs + 0])
  44                         # Step through the posts in a column
  45                         while topdelta != 255:
  46                                 length = ord (data[col_ofs + 1])
  47                                 source_ofs = col_ofs + 3
  48                                 for y_ofs in range (0, length):
  49                                         screen[x + x_ofs, topdelta + y_ofs] = trans(ord (data[source_ofs + y_ofs]))
  50                                 col_ofs = col_ofs + length + 4
  51                                 topdelta = ord (data[col_ofs + 0])
  52
  53         def Init(self):
  54                 pygame.init()
  55                 self.window = pygame.display.set_mode ((320,200), 0, 8)
  56                 pygame.display.set_caption('PyHexen')
  57                 self.screen = pygame.display.get_surface()
  58
  59         def DrawRawScreen(self, lump):
  60                 # Horribly inefficent for now.
  61                 self.__blitRaw (lump, 320, 200)
  62
  63         def DrawPatch(self, x, y, lump):
  64                 # Horribly inefficent for now.
  65                 self.__blitPatch (lump, x, y)
  66
  67         def DrawFuzzPatch(self, x, y, lump):
  68                 # Stub
  69                 self.DrawPatch(x,y,lump)
  70
  71         def DrawShadowedPatch(self,x,y,lump):
  72                 # Stub
  73                 self.DrawPatch(x,y,lump)
  74