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Diffstat (limited to 'pgu/tilevid.py')
| -rw-r--r-- | pgu/tilevid.py | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/pgu/tilevid.py b/pgu/tilevid.py new file mode 100644 index 0000000..00f730d --- /dev/null +++ b/pgu/tilevid.py @@ -0,0 +1,195 @@ +"""Square tile based engine.""" + +from pgu.vid import * +import pygame + +class Tilevid(Vid): + """Based on [[vid]] -- see for reference.""" + def paint(self,s): + sw,sh = s.get_width(),s.get_height() + self.view.w,self.view.h = sw,sh + + tiles = self.tiles + tw,th = tiles[0].image.get_width(),tiles[0].image.get_height() + w,h = self.size + + if self.bounds != None: self.view.clamp_ip(self.bounds) + + ox,oy = self.view.x,self.view.y + tlayer = self.tlayer + blayer = self.blayer + alayer = self.alayer + sprites = self.sprites + + blit = s.blit + yy = - (self.view.y%th) + my = (oy+sh)/th + if (oy+sh)%th: my += 1 + + if blayer != None: + for y in xrange(oy/th,my): + if y >=0 and y < h: + trow = tlayer[y] + brow = blayer[y] + arow = alayer[y] + xx= - (self.view.x%tw) + mx = (ox+sw)/tw + #if (ox+sh)%tw: mx += 1 + for x in xrange(ox/tw,mx+1): + if x >=0and x<w: + blit(tiles[brow[x]].image,(xx,yy)) + blit(tiles[trow[x]].image,(xx,yy)) + arow[x]=0 + xx += tw + yy+=th + else: + for y in xrange(oy/th,my): + if y >=0 and y<h: + trow = tlayer[y] + arow = alayer[y] + xx= - (self.view.x%tw) + mx = (ox+sw)/tw + #if (ox+sh)%tw: mx += 1 + for x in xrange(ox/tw,mx+1): + if x >=0 and x<w: + blit(tiles[trow[x]].image,(xx,yy)) + arow[x]=0 + xx += tw + yy+=th + + for s in sprites: + s.irect.x = s.rect.x-s.shape.x + s.irect.y = s.rect.y-s.shape.y + blit(s.image,(s.irect.x-ox,s.irect.y-oy)) + s.updated=0 + s._irect = Rect(s.irect) + #s._rect = Rect(s.rect) + + self.updates = [] + self._view = pygame.Rect(self.view) + return [Rect(0,0,sw,sh)] + + def update(self,s): + sw,sh = s.get_width(),s.get_height() + self.view.w,self.view.h = sw,sh + + if self.bounds != None: self.view.clamp_ip(self.bounds) + if self.view.x != self._view.x or self.view.y != self._view.y: + return self.paint(s) + + ox,oy = self.view.x,self.view.y + sw,sh = s.get_width(),s.get_height() + w,h = self.size + tlayer = self.tlayer + blayer = self.blayer + alayer = self.alayer + tiles = self.tiles + tw,th = tiles[0].image.get_width(),tiles[0].image.get_height() + sprites = self.sprites + blit = s.blit + + us = [] + + #mark places where sprites have moved, or been removed + + ss = self.sprites.removed + self.sprites.removed = [] + ss.extend(sprites) + for s in ss: + #figure out what has been updated. + s.irect.x = s.rect.x-s.shape.x + s.irect.y = s.rect.y-s.shape.y + if (s.irect.x != s._irect.x or s.irect.y != s._irect.y + or s.image != s._image): + #w,h can be skipped, image covers that... + s.updated = 1 + if s.updated: + r = s._irect + y = max(0,r.y/th) + yy = min(h,r.bottom/th+1) + while y < yy: + x = max(0,r.x/tw) + xx = min(w,r.right/tw+1) + while x < xx: + if alayer[y][x] == 0: + self.updates.append((x,y)) + alayer[y][x]=1 + x += 1 + y += 1 + + r = s.irect + y = max(0,r.y/th) + yy = min(h,r.bottom/th+1) + while y < yy: + x = r.x/tw + xx = min(w,r.right/tw+1) + while x < xx: + if alayer[y][x]==0: + alayer[y][x]=2 + self.updates.append((x,y)) + x += 1 + y += 1 + + + #mark sprites that are not being updated that need to be updated because + #they are being overwritte by sprites / tiles + for s in sprites: + if s.updated==0: + r = s.irect + y = max(0,r.y/th) + yy = min(h,r.bottom/th+1) + while y < yy: + x = max(0,r.x/tw) + xx = min(w,r.right/tw+1) + while x < xx: + if alayer[y][x]==1: + s.updated=1 + x += 1 + y += 1 + + + for u in self.updates: + x,y=u + xx,yy=x*tw-ox,y*th-oy + if alayer[y][x] == 1: + if blayer != None: blit(tiles[blayer[y][x]].image,(xx,yy)) + blit(tiles[tlayer[y][x]].image,(xx,yy)) + alayer[y][x]=0 + us.append(Rect(xx,yy,tw,th)) + + for s in sprites: + if s.updated: + blit(s.image,(s.irect.x-ox, s.irect.y-oy)) + s.updated=0 + s._irect = Rect(s.irect) + s._image = s.image + + self.updates = [] + return us + + def view_to_tile(self,pos): + x,y = pos + tiles = self.tiles + tw,th = tiles[0].image.get_width(),tiles[0].image.get_height() + return x/tw,y/th + + def tile_to_view(self,pos): + x,y = pos + tiles = self.tiles + tw,th = tiles[0].image.get_width(),tiles[0].image.get_height() + x,y = x*tw, y*th + return x,y + + + def screen_to_tile(self,pos): + x,y = pos + x,y = x+self.view.x,y+self.view.y + return self.view_to_tile((x,y)) + + def tile_to_screen(self,pos): + x,y = pos + x,y = self.tile_to_view(pos) + x,y = x - self.view.x, y - self.view.y + return x,y + +# vim: set filetype=python sts=4 sw=4 noet si : |