Note -- this engine is not finished, any may not work for your -particular needs. If you are able to update it, help would be -greatly appreciated!
- -please note that this file is alpha, and is subject to modification in -future versions of pgu!
- -""" -print 'pgu.isovid','This module is alpha, and is subject to change.' - -from pgu.vid import * -import pygame - -class Isovid(Vid): - """Create an iso vid engine. See [[vid]]""" - def update(self,screen): - return self.paint(screen) - - def paint(self,screen): - sw,sh = screen.get_width(),screen.get_height() - - tlayer = self.tlayer - blayer = self.blayer - zlayer = self.zlayer - w,h = len(tlayer[0]),len(tlayer) - - iso_w,iso_h,iso_z,tile_w,tile_h,base_w,base_h = self.iso_w,self.iso_h,self.iso_z,self.tile_w,self.tile_h,self.base_w,self.base_h - - base_h2 = base_h/2 - base_w2 = base_w/2 - - bot = tile_h/base_h2 - todo_max = sh/base_h2+bot - todo = [[] for y in xrange(0,todo_max)] - - self.view.w,self.view.h = sw,sh - view = self.view - adj = self.adj = pygame.Rect(-self.view.x,-self.view.y,0,0) - - for s in self.sprites: - self.sprite_calc_irect(s) - x,y = self.iso_to_view((s.rect.centerx,s.rect.centery)) - v = (y+adj.y)/base_h2 - 1 - if v >= 0 and v < todo_max: - todo[v].append((s.image,s.irect)) - #else: print 'doesnt fit',v - - w,h = len(tlayer[0]),len(tlayer) - tiles = self.tiles - - #"" - if self.bounds == None: - tmp,y1 = self.tile_to_view((0,0)) - x1,tmp = self.tile_to_view((0,h+1)) - tmp,y2 = self.tile_to_view((w+1,h+1)) - x2,tmp = self.tile_to_view((w+1,0)) - self.bounds = pygame.Rect(x1,y1,x2-x1,y2-y1) - #"" - - if self.bounds != None: self.view.clamp_ip(self.bounds) - - ox,oy = self.screen_to_tile((0,0)) - sx,sy = self.iso_to_view((ox*iso_w,oy*iso_h)) - dx,dy = sx - self.view.x,sy - self.view.y - - for i2 in xrange(-bot,self.view.h/base_h2+bot): - tx,ty = ox + i2/2 + i2%2,oy + i2/2 - x,y = (i2%2)*base_w2 + dx,i2*base_h2 + dy - - #to adjust for the -1 in i1 - x,tx,ty = x-base_w,tx-1,ty+1 - for i1 in xrange(-1,self.view.w/base_w+2): #NOTE: not sure why +2 - if ty >= 0 and ty < h and tx >= 0 and tx < w: - z = zlayer[ty][tx]*iso_z - if blayer != None: - n = blayer[ty][tx] - if n != 0: - t = tiles[n] - if t != None and t.image != None: - screen.blit(t.image,(x-base_w2,y+z)) - n = tlayer[ty][tx] - if n != 0: - t = tiles[n] - if t != None and t.image != None: - screen.blit(t.image,(x-base_w2,y-(t.image_h-base_h)+z)) - - tx += 1 - ty -= 1 - x += base_w - for img,irect in todo[y/base_h2]: - screen.blit(img,(irect.x+adj.x,irect.y+adj.y)) - - return [pygame.Rect(0,0,screen.get_width(),screen.get_height())] - - def iso_to_view(self,pos): - tlayer = self.tlayer - w,h = len(tlayer[0]),len(tlayer) - - x,y = pos - - #nx,ny = (h*self.iso_w + x - y)/2, (0 + x + y)/2 - nx,ny = (x - y)/2, (0 + x + y)/2 - - return (nx * self.base_w / self.iso_w), (ny * self.base_h / self.iso_h) - - def view_to_iso(self,pos): - tlayer = self.tlayer - w,h = len(tlayer[0]),len(tlayer) - - x,y = pos - - x,y = x*self.iso_w/self.base_w, y*self.iso_h/self.base_h - - #x -= (self.iso_w/2) * h - #x -= (self.iso_w/2) * h - - nx = (x+y) - ny = y*2-nx - - return nx,ny - - def tile_to_view(self,pos): - return self.iso_to_view((pos[0]*self.iso_w,pos[1]*self.iso_h)) - - def screen_to_tile(self,pos): - x,y = pos - x += self.view.x - y += self.view.y - x,y = self.view_to_iso((x,y)) - return x/self.iso_w,y/self.iso_h - - def tile_to_screen(self,pos): - x,y = self.iso_to_view((pos[0]*self.iso_w,pos[1]*self.iso_h)) - return x-self.view.x,y-self.view.y - - def tga_load_tiles(self,fname,size,tdata={}): - Vid.tga_load_tiles(self,fname,size,tdata) - - self.tile_w,self.tile_h = size - self.iso_w,self.iso_h,self.iso_z = self.tile_w,self.tile_w,1 - self.base_w,self.base_h = self.tile_w,self.tile_w/2 - - - - def resize(self,size,bg=0): - Vid.resize(self,size,bg) - - tlayer = self.tlayer - w,h = len(tlayer[0]),len(tlayer) - - self.zlayer = [[0 for x in xrange(0,w)] for y in xrange(0,h)] - - - - - def sprite_calc_irect(self,s): - tlayer = self.tlayer - w,h = len(tlayer[0]),len(tlayer) - zlayer = self.zlayer - - x,y = self.iso_to_view((s.rect.centerx,s.rect.centery)) - tx,ty = s.rect.centerx/self.iso_w,s.rect.centery/self.iso_h - z = 0 - if ty >= 0 and ty < h and tx >= 0 and tx < w: - z = zlayer[ty][tx]*self.iso_z - - nx,ny = x - s.shape.centerx, y - s.shape.centery + z - - s.irect.x,s.irect.y = nx,ny - - def run_codes(self,cdata,rect): - #HACK to make run_codes work - w,h = self.iso_w,self.iso_h - - img = self.tiles[0].image - - self.tiles[0].image = pygame.Surface((w,h)) - r = Vid.run_codes(self,cdata,rect) - self.tiles[0].image = img - return r