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Diffstat (limited to 'pgu/hexvid.py')
| -rw-r--r-- | pgu/hexvid.py | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/pgu/hexvid.py b/pgu/hexvid.py new file mode 100644 index 0000000..2d4156d --- /dev/null +++ b/pgu/hexvid.py @@ -0,0 +1,127 @@ +"""Hexagonal tile engine. + +<p>Note -- this engine is not finished. Sprites are not supported. It +can still be useful for using the level editor, and for rendering hex +terrains, however. If you are able to update it and use it in a real game, +help would be greatly appreciated!</p> + +<p>please note that this file is alpha, and is subject to modification in +future versions of pgu!</p> + +""" +print 'pgu.hexvid','This module is alpha, and is subject to change.' + +from pgu.vid import * +import pygame + + +class Hexvid(Vid): + """Create an hex vid engine. See [[vid]]""" + def update(self,screen): + return self.paint(screen) + + def paint(self,screen): + sw,sh = screen.get_width(),screen.get_height() + self.view.w,self.view.h = sw,sh + + 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 + + tile_w,tile_h = self.tile_w,self.tile_h + tile_w2,tile_h2 = tile_w/2,tile_h/2 + + view = self.view + adj = self.adj = pygame.Rect(-self.view.x,-self.view.y,0,0) + + 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) + print self.bounds + #"" + + if self.bounds != None: self.view.clamp_ip(self.bounds) + + ox,oy = self.screen_to_tile((0,0)) + sx,sy = self.tile_to_view((ox,oy)) + dx,dy = sx - self.view.x,sy - self.view.y + + bot = 1 + + tile_wi = tile_w + tile_w/2 + tile_wi2 = tile_wi/2 + + #dx += tile_w/2 + + for i2 in xrange(-bot,self.view.h/tile_h2+bot*3): #NOTE: 3 seems a bit much, but it works. + tx,ty = ox + i2/2 + i2%2,oy + i2/2 + x,y = (i2%2)*tile_wi2 + dx,i2*tile_h2 + dy + + #to adjust for the -1 in i1 + x,tx,ty = x-tile_wi,tx-1,ty+1 + + x -= tile_w/2 + for i1 in xrange(-1,self.view.w/tile_wi+1): + if ty >= 0 and ty < h and tx >= 0 and tx < w: + 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,y)) + n = tlayer[ty][tx] + if n != 0: + t = tiles[n] + if t != None and t.image != None: + screen.blit(t.image,(x,y)) + + + tx += 1 + ty -= 1 + x += tile_wi + + return [pygame.Rect(0,0,screen.get_width(),screen.get_height())] + + def view_to_tile(self,pos): + x,y = pos + #x = x + (self.tile_w*1/2) + + x,y = int(x*4/(self.tile_w*3)), y*2/self.tile_h + nx = (x + y) / 2 + ny = (y - x) / 2 + return nx,ny + + def tile_to_view(self,pos): + x,y = pos + nx = x - y + ny = x + y + nx,ny = int(nx*(self.tile_w*3)/4), ny*self.tile_h/2 + + #nx = nx - (self.tile_w*1/2) + return nx,ny + + def screen_to_tile(self,pos): #NOTE HACK : not sure if the 3/8 is right or not, but it is pretty close... + pos = pos[0]+self.view.x + self.tile_w*3/8,pos[1]+self.view.y + pos = self.view_to_tile(pos) + return pos + + def tile_to_screen(self,pos): + pos = self.tile_to_view(pos) + pos = pos[0]-self.view.x,pos[1]-self.view.y + return pos + + + def tga_load_tiles(self,fname,size,tdata={}): + Vid.tga_load_tiles(self,fname,size,tdata) + + self.tile_w,self.tile_h = size
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