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import bpy
import bmesh
from mathutils import Vector
# https://developer.valvesoftware.com/wiki/MAP_file_format
def fmt3(vec3):
return "%.10f %.10f %.10f"%(vec3.x, vec3.y, vec3.z)
def fmt_plane(plane3dots):
return "( %s ) ( %s ) ( %s )"%(fmt3(plane3dots[0]), fmt3(plane3dots[1]), fmt3(plane3dots[2]))
def fmt_tex(tev, toff):
return "[ %s %.1f ]"%(fmt3(tev), toff)
def fmt_face(plane3dots, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY):
return "%s %s %s %s %s"%(
fmt_plane(plane3dots), tename,
fmt_tex(tev1, teoff1),
fmt_tex(tev2, teoff2),
fmt3(Vector([rot, scaleX, scaleY]))
)
def output_entity_start(dict_props):
print("{")
for k,v in dict_props.items():
print("\t\"%s\" \"%s\""%(k,v))
def output_brush_start():
print("\t{")
def output_brush_face(plane3dots, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY):
print("\t\t%s"%fmt_face(plane3dots, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY))
def output_brush_end():
print("\t}")
def output_entity_end():
print("}")
def normal(plane3dots):
v01 = plane3dots[1] - plane3dots[0]
v02 = plane3dots[2] - plane3dots[0]
n = v01.cross(v02)
n.normalize()
return n
def flip(plane3dots):
tmp = plane3dots[2]
plane3dots[2] = plane3dots[1]
plane3dots[1] = tmp
def debug(fano,plane3dots):
fano.normalize()
print(fano)
v01 = plane3dots[1] - plane3dots[0]
v02 = plane3dots[2] - plane3dots[0]
n = v01.cross(v02)
n.normalize()
print(n)
print(fano-n)
print()
# https://developer.valvesoftware.com/wiki/MAP_file_format
worldspawn_props = {
'classname': 'worldspawn',
'sounds': 1,
'MaxRange': 4096,
'mapversion': 220,
'wad': '\\half-life\\valve\\xeno.wad;\\half-life\\valve\\decals.wad;\\half-life\\valve\\halflife.wad;\\half-life\\valve\\liquids.wad'
}
blender_to_map_scale_factor = 100
scene = bpy.context.scene
# Simplify each mesh once (a mesh could be used by multiple objects)
unique_meshes = set([ob.data for ob in scene.objects if ob.type == 'MESH'])
for mesh in unique_meshes:
bm = bmesh.new()
bm.from_mesh(mesh)
bmesh.ops.remove_doubles(bm, verts=bm.verts, dist=0.01)
bmesh.ops.holes_fill(bm, edges=bm.edges) #, sides=0
bmesh.ops.connect_verts_concave(bm, faces=bm.faces)
bmesh.ops.connect_verts_nonplanar(bm, faces=bm.faces) #, angle_limit=0.0
bmesh.ops.planar_faces(bm, faces=bm.faces)
bmesh.ops.recalc_face_normals(bm, faces=bm.faces)
bm.to_mesh(mesh)
bm.free()
# Export each object in .map
all_objects_with_mesh_type = [ob for ob in scene.objects if ob.type == 'MESH']
output_entity_start(worldspawn_props)
for ob in all_objects_with_mesh_type:
mat_to_map = ob.matrix_world * blender_to_map_scale_factor
mesh = ob.data
mesh.update(calc_tessface=True)
for fa in mesh.tessfaces:
output_brush_start()
tename="AAATRIGGER"
tev1 = Vector([1,0,0])
teoff1 = 0
tev2 = Vector([0,-1,0])
teoff2 = 0
rot = 0
scaleX = 1
scaleY = 1
# Make a brush in .map for each face in blender
# Brushes are (strangely) defined as a set of intersecting planes in .map
# Planes are defined with 3 3D points belonging to it
# "They must be in a clockwise order when facing the outside of the plane
# that is, the side that points outwards from the brush"
brfront = [None,None,None]
brback = [None,None,None]
# For now this code take the 3 first vectices of the face
# TODO This can cause troubles if they are colinear or with have narrow angle
for i in [0,1,2]:
vi = mesh.vertices[fa.vertices[i]].co
# front plane in brush will match face in blender (in global coords, with a scale factor)
brfront[i] = mat_to_map * vi
# back plane will be 1 (map) unit inside (normal facing outside, so substract it)
brback[2-i] = mat_to_map * ( vi - fa.normal / blender_to_map_scale_factor )
# Check if coords are in clockwise order, else flip them
fano = mat_to_map.to_3x3() * fa.normal
frno = normal(brfront)
epsilon = 0.1
if ( (fano - frno).length_squared > epsilon ):
flip(brfront)
flip(brback)
#print("Front&Back Flipped")
#debug(mat_to_map.to_3x3() * fa.normal, front)
output_brush_face(brfront, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY)
#debug(mat_to_map.to_3x3() *-fa.normal, back)
output_brush_face(brback, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY)
# make 1 side face in brush per blender edge
for i,j in fa.edge_keys:
brside = [None,None,None]
brside[0] = mat_to_map * ( mesh.vertices[i].co )
brside[1] = mat_to_map * ( mesh.vertices[j].co )
brside[2] = mat_to_map * ( mesh.vertices[j].co - fa.normal )
# Let have a plane define by a point A and a normal n
# Let M a point in space. M is on the plane if AM.n = 0
# Now we want to know if the "side" face normal is poiting outwards of the brush (<0)
# Take A = side[0], M = fa.center (that is inside the brush), n = normal(side)
if ( (mat_to_map * fa.center - brside[0]).dot(normal(brside)) < 0):
flip(brside)
#print("Side Flipped")
#print(normal(side))
output_brush_face(brside, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY)
output_brush_end()
output_entity_end()
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