src/pgu/tilevid.py

   1 """Square tile based engine."""
   2
   3 from pgu.vid import *
   4 import pygame
   5
   6 class Tilevid(Vid):
   7     """Based on [[vid]] -- see for reference."""
   8     def paint(self,s):
   9         sw,sh = s.get_width(),s.get_height()
  10         self.view.w,self.view.h = sw,sh
  11
  12         tiles = self.tiles
  13         tw,th = tiles[0].image.get_width(),tiles[0].image.get_height()
  14         w,h = self.size
  15
  16         if self.bounds != None: self.view.clamp_ip(self.bounds)
  17
  18         ox,oy = self.view.x,self.view.y
  19         tlayer = self.tlayer
  20         blayer = self.blayer
  21         alayer = self.alayer
  22         sprites = self.sprites
  23
  24         blit = s.blit
  25         yy = - (self.view.y%th)
  26         my = (oy+sh)/th
  27         if (oy+sh)%th: my += 1
  28
  29         if blayer != None:
  30             for y in xrange(oy/th,my):
  31                 if y >=0 and y < h:
  32                     trow = tlayer[y]
  33                     brow = blayer[y]
  34                     arow = alayer[y]
  35                     xx= - (self.view.x%tw)
  36                     mx = (ox+sw)/tw
  37                     #if (ox+sh)%tw: mx += 1
  38                     for x in xrange(ox/tw,mx+1):
  39                         if x >=0and x<w:
  40                             blit(tiles[brow[x]].image,(xx,yy))
  41                             blit(tiles[trow[x]].image,(xx,yy))
  42                             arow[x]=0
  43                         xx += tw
  44                 yy+=th
  45         else:
  46             for y in xrange(oy/th,my):
  47                 if y >=0 and y<h:
  48                     trow = tlayer[y]
  49                     arow = alayer[y]
  50                     xx= - (self.view.x%tw)
  51                     mx = (ox+sw)/tw
  52                     #if (ox+sh)%tw: mx += 1
  53                     for x in xrange(ox/tw,mx+1):
  54                         if x >=0 and x<w:
  55                             blit(tiles[trow[x]].image,(xx,yy))
  56                             arow[x]=0
  57                         xx += tw
  58                 yy+=th
  59
  60         for s in sprites:
  61             s.irect.x = s.rect.x-s.shape.x
  62             s.irect.y = s.rect.y-s.shape.y
  63             blit(s.image,(s.irect.x-ox,s.irect.y-oy))
  64             s.updated=0
  65             s._irect = Rect(s.irect)
  66             #s._rect = Rect(s.rect)
  67
  68         self.updates = []
  69         self._view = pygame.Rect(self.view)
  70         return [Rect(0,0,sw,sh)]
  71
  72     def update(self,s):
  73         sw,sh = s.get_width(),s.get_height()
  74         self.view.w,self.view.h = sw,sh
  75
  76         if self.bounds != None: self.view.clamp_ip(self.bounds)
  77         if self.view.x != self._view.x or self.view.y != self._view.y:
  78             return self.paint(s)
  79
  80         ox,oy = self.view.x,self.view.y
  81         sw,sh = s.get_width(),s.get_height()
  82         w,h = self.size
  83         tlayer = self.tlayer
  84         blayer = self.blayer
  85         alayer = self.alayer
  86         tiles = self.tiles
  87         tw,th = tiles[0].image.get_width(),tiles[0].image.get_height()
  88         sprites = self.sprites
  89         blit = s.blit
  90
  91         us = []
  92
  93         #mark places where sprites have moved, or been removed
  94
  95         ss = self.sprites.removed
  96         self.sprites.removed = []
  97         ss.extend(sprites)
  98         for s in ss:
  99             #figure out what has been updated.
 100             s.irect.x = s.rect.x-s.shape.x
 101             s.irect.y = s.rect.y-s.shape.y
 102             if (s.irect.x != s._irect.x or s.irect.y != s._irect.y
 103                      or s.image != s._image):
 104                  #w,h can be skipped, image covers that...
 105                  s.updated = 1
 106             if s.updated:
 107                 r = s._irect
 108                 y = max(0,r.y/th)
 109                 yy = min(h,r.bottom/th+1)
 110                 while y < yy:
 111                     x = max(0,r.x/tw)
 112                     xx = min(w,r.right/tw+1)
 113                     while x < xx:
 114                         if alayer[y][x] == 0:
 115                             self.updates.append((x,y))
 116                         alayer[y][x]=1
 117                         x += 1
 118                     y += 1
 119
 120                 r = s.irect
 121                 y = max(0,r.y/th)
 122                 yy = min(h,r.bottom/th+1)
 123                 while y < yy:
 124                     x = r.x/tw
 125                     xx = min(w,r.right/tw+1)
 126                     while x < xx:
 127                         if alayer[y][x]==0:
 128                             alayer[y][x]=2
 129                             self.updates.append((x,y))
 130                         x += 1
 131                     y += 1
 132
 133
 134         #mark sprites that are not being updated that need to be updated because
 135         #they are being overwritte by sprites / tiles
 136         for s in sprites:
 137             if s.updated==0:
 138                 r = s.irect
 139                 y = max(0,r.y/th)
 140                 yy = min(h,r.bottom/th+1)
 141                 while y < yy:
 142                     x = max(0,r.x/tw)
 143                     xx = min(w,r.right/tw+1)
 144                     while x < xx:
 145                         if alayer[y][x]==1:
 146                             s.updated=1
 147                         x += 1
 148                     y += 1
 149
 150
 151         for u in self.updates:
 152             x,y=u
 153             xx,yy=x*tw-ox,y*th-oy
 154             if alayer[y][x] == 1:
 155                 if blayer != None: blit(tiles[blayer[y][x]].image,(xx,yy))
 156                 blit(tiles[tlayer[y][x]].image,(xx,yy))
 157             alayer[y][x]=0
 158             us.append(Rect(xx,yy,tw,th))
 159
 160         for s in sprites:
 161             if s.updated:
 162                 blit(s.image,(s.irect.x-ox, s.irect.y-oy))
 163                 s.updated=0
 164                 s._irect = Rect(s.irect)
 165                 s._image = s.image
 166
 167         self.updates = []
 168         return us
 169
 170     def view_to_tile(self,pos):
 171         x,y = pos
 172         tiles = self.tiles
 173         tw,th = tiles[0].image.get_width(),tiles[0].image.get_height()
 174         return x/tw,y/th
 175
 176     def tile_to_view(self,pos):
 177         x,y = pos
 178         tiles = self.tiles
 179         tw,th = tiles[0].image.get_width(),tiles[0].image.get_height()
 180         x,y = x*tw, y*th
 181         return x,y
 182
 183
 184     def screen_to_tile(self,pos):
 185         x,y = pos
 186         x,y = x+self.view.x,y+self.view.y
 187         return self.view_to_tile((x,y))
 188
 189     def tile_to_screen(self,pos):
 190         x,y = pos
 191         x,y = self.tile_to_view(pos)
 192         x,y = x - self.view.x, y - self.view.y
 193         return x,y
 194
 195 # vim: set filetype=python sts=4 sw=4 noet si :