LogalDeveloper/Minecraft-Overviewer
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initial stab at lighting support

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This commit is contained in:
Aaron Griffith
2010-09-27 14:55:16 -04:00
parent aa82a82f13
commit a15390cc47
1 changed files with 28 additions and 16 deletions
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44
chunk.py
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@@ -54,11 +54,26 @@ def get_blockarray_fromfile(filename):
return get_blockarray(level)
def get_skylight_array(level):
"""Returns the skylight array. Remember this is 4 bits per block, so divide
the z component by 2 when accessing the array. and mask off the top or
bottom 4 bits if it's odd or even respectively
"""
return numpy.frombuffer(level['SkyLight'], dtype=numpy.uint8).reshape((16,16,64))
"""Returns the skylight array. This is 4 bits per block, but it is
expanded for you so you may index it normally."""
skylight = numpy.frombuffer(level['SkyLight'], dtype=numpy.uint8).reshape((16,16,64))
# this array is 2 blocks per byte, so expand it
skylight_expanded = numpy.empty((16,16,128), dtype=numpy.uint8)
# Even elements get the lower 4 bits
skylight_expanded[:,:,::2] = skylight & 0x0F
# Odd elements get the upper 4 bits
skylight_expanded[:,:,1::2] = (skylight & 0xF0) >> 4
return skylight_expanded
def get_blocklight_array(level):
"""Returns the blocklight array. This is 4 bits per block, but it
is expanded for you so you may index it normally."""
# expand just like get_skylight_array()
blocklight = numpy.frombuffer(level['BlockLight'], dtype=numpy.uint8).reshape((16,16,64))
blocklight_expanded = numpy.empty((16,16,128), dtype=numpy.uint8)
blocklight_expanded[:,:,::2] = blocklight & 0x0F
blocklight_expanded[:,:,1::2] = (blocklight & 0xF0) >> 4
return blocklight_expanded
# This set holds blocks ids that can be seen through, for occlusion calculations
transparent_blocks = set([0, 6, 8, 9, 18, 20, 37, 38, 39, 40, 50, 51, 52, 53,
@@ -219,24 +234,18 @@ class ChunkRenderer(object):
rendered, and blocks are drawn with a color tint depending on their
depth."""
blocks = self.blocks
skylight = get_skylight_array(self.level)
blocklight = get_blocklight_array(self.level)
if cave:
skylight = get_skylight_array(self.level)
# Cave mode. Actually go through and 0 out all blocks that are not in a
# cave, so that it only renders caves.
# 1st task: this array is 2 blocks per byte, expand it so we can just
# do a bitwise and on the arrays
skylight_expanded = numpy.empty((16,16,128), dtype=numpy.uint8)
# Even elements get the lower 4 bits
skylight_expanded[:,:,::2] = skylight & 0x0F
# Odd elements get the upper 4 bits
skylight_expanded[:,:,1::2] = skylight >> 4
# Places where the skylight is not 0 (there's some amount of skylight
# touching it) change it to something that won't get rendered, AND
# won't get counted as "transparent".
blocks = blocks.copy()
blocks[skylight_expanded != 0] = 21
blocks[skylight != 0] = 21
# Each block is 24x24
@@ -310,7 +319,9 @@ class ChunkRenderer(object):
if cave:
img.paste(Image.blend(t[0],depth_colors[z],0.3), (imgx, imgy), t[1])
else:
img.paste(t[0], (imgx, imgy), t[1])
light_coeff = pow(0.95, 15 - max(blocklight[x,y,z], skylight[x,y,z]))
img.paste(Image.blend(t[0], black_color, 1.0 - light_coeff), (imgx, imgy), t[1])
#img.paste(t[0], (imgx, imgy), t[1])
# Draw edge lines
if blockid not in transparent_blocks:
@@ -347,4 +358,5 @@ def generate_depthcolors():
g -= 7
return depth_colors
black_color = Image.new("RGB", (24,24), (0,0,0))
depth_colors = generate_depthcolors()