BIOHAZARD 1.5/2/3 .RID (Camera data) Import sample, for Blen

#==========================================================================================
# BIOHAZARD 1.5/2/3 .RID (Camera data) Import sample, for Blender 2.5x+
#==========================================================================================
# 2014, mortician ([email protected])
#==========================================================================================
import struct
import bpy

def flip_axis(value):

    if (value <= 0):
        value = abs(value)
    else:
        value = -abs(value)

    return value

def import_rid(filepath):

    #Open file...
    rdt_file = open(filepath, 'rb')
    #Jump to offset 1, then obtain the number of cameras (h_cut) in the room...
    rdt_file.seek(1)
    h_cut = int(struct.unpack("B", rdt_file.read(1))[0])
    #Get RID (camera data) offset then jump there
    rdt_file.seek(36)
    o_rid = int(struct.unpack("L", rdt_file.read(4))[0])
    rdt_file.seek(o_rid)

    #Read camera data...
    for i in range(h_cut):

        e_flg = int(struct.unpack("H", rdt_file.read(2))[0])
        fov = float(struct.unpack("H", rdt_file.read(2))[0]) / 1000.0
        x = float(struct.unpack("l", rdt_file.read(4))[0]) / 1000.0
        y = flip_axis(float(struct.unpack("l", rdt_file.read(4))[0]) / 1000.0)
        z = float(struct.unpack("l", rdt_file.read(4))[0]) / 1000.0
        tx = float(struct.unpack("l", rdt_file.read(4))[0]) / 1000.0
        ty = flip_axis(float(struct.unpack("l", rdt_file.read(4))[0]) / 1000.0)
        tz = float(struct.unpack("l", rdt_file.read(4))[0]) / 1000.0
        o_pri = int(struct.unpack("L", rdt_file.read(4))[0])

        #Create camera object...
        cam = bpy.data.cameras.new('CAM_' + "{0:0>2}".format(i))
        cam_ob = bpy.data.objects.new('CAM_' + "{0:0>2}".format(i), cam)
        bpy.context.scene.objects.link(cam_ob)
        cam_ob.location = (x, z, y)
        cam_ob.data.lens = fov - 6

        #Create target/aim...
        empty = bpy.data.objects.new('CAM_' + "{0:0>2}".format(i) + '_AIM', None)
        bpy.context.scene.objects.link(empty)
        empty.location = (tx, tz, ty)

        #Set the target constraint...
        cam_ob.select = True
        bpy.data.objects['CAM_' + "{0:0>2}".format(i) + '_AIM'].select = True
        aim = cam_ob.constraints.new('TRACK_TO')
        aim.target = empty
        aim.track_axis = 'TRACK_NEGATIVE_Z'
        aim.up_axis = 'UP_Y'

        #Update scene
        bpy.ops.group.create(name='RID_' + "{0:0>2}".format(i))
        bpy.context.scene.update()
        bpy.ops.object.select_all(action="TOGGLE")

        #Set scene render resolution to 640x480...
        bpy.context.scene.render.resolution_x = 640
        bpy.context.scene.render.resolution_y = 480
        bpy.context.scene.render.resolution_percentage = 100

    rdt_file.close()



#Call function...
import_rid('C:/room1000.rdt') #Change this path to load the file in question ;)