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"""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 :
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