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"""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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