diff options
Diffstat (limited to 'io_scene_hl1map/export_hl1map.py')
| -rwxr-xr-x | io_scene_hl1map/export_hl1map.py | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/io_scene_hl1map/export_hl1map.py b/io_scene_hl1map/export_hl1map.py new file mode 100755 index 0000000..45cc1b9 --- /dev/null +++ b/io_scene_hl1map/export_hl1map.py @@ -0,0 +1,178 @@ +# ##### BEGIN GPL LICENSE BLOCK ##### +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software Foundation, +# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +# +# ##### END GPL LICENSE BLOCK ##### + +import bpy +import bmesh +from mathutils import Vector +from bpy_extras.io_utils import create_derived_objects, free_derived_objects + +# https://developer.valvesoftware.com/wiki/MAP_file_format + +def fmt3(vec3): + return '%f %f %f'%(vec3.x, vec3.y, vec3.z) + #return ' '.join(['%%.%df']*3)%tuple([precision]*3)%(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, fh): + fh.write('{\n') + for k,v in dict_props.items(): + fh.write('\t%-16s "%s"\n'%('"'+k+'"',v)) + +def output_brush_start(fh): + fh.write('\t{\n') + +def output_brush_face(plane3dots, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY, fh): + fh.write('\t\t%s\n'%fmt_face(plane3dots, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY)) + +def output_brush_end(fh): + fh.write('\t}\n') + +def output_entity_end(fh): + fh.write('}\n') + +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 debug1(o=''): + #print(o) + return None + +def debug2(fano,plane3dots): + fano.normalize() + debug1(fano) + v01 = plane3dots[1] - plane3dots[0] + v02 = plane3dots[2] - plane3dots[0] + n = v01.cross(v02) + n.normalize() + debug1(n) + debug1(fano-n) + debug1() + + +def save(operator, context, filepath, worldspawn_props, blender_to_map_scale_factor, use_selection=True): + """Save the Blender scene to a map file.""" + + # Make sure that data we want to access is not out of sync because edit mode is in use + if bpy.ops.object.mode_set.poll(): + bpy.ops.object.mode_set(mode='OBJECT') + + sc = context.scene + if use_selection: + objects = list(ob for ob in sc.objects if ob.is_visible(sc) and ob.type == 'MESH' and ob.data and ob.select) + else: + objects = list(ob for ob in sc.objects if ob.is_visible(sc) and ob.type == 'MESH' and ob.data) + + # Simplify each mesh once (a mesh could be used by multiple objects) + for mesh in set([ob.data for ob in objects]): + bm = bmesh.new() + bm.from_mesh(mesh) + bmesh.ops.remove_doubles(bm, verts=bm.verts, dist=1/blender_to_map_scale_factor) + 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() + + # Iterate over objects, make computations (set of cross planes) and print them as worldspawn entity brushes + with open(filepath, 'w') as fh: + output_entity_start(worldspawn_props, fh) + for ob in objects: + debug1(ob.name) + 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(fh) + 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 if they 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[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) + debug1('Front Flipped') + else: + flip(brback) + debug1('Back Flipped') + debug2(mat_to_map.to_3x3() * fa.normal, brfront) + debug2(mat_to_map.to_3x3() *-fa.normal, brback) + output_brush_face(brfront, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY, fh) + output_brush_face(brback, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY, fh) + # 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) + debug1('Side Flipped') + debug1(normal(brside)) + output_brush_face(brside, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY, fh) + output_brush_end(fh) + # endfor fa in mesh.tessfaces: + output_entity_end(fh) + return {'FINISHED'} + |