A python program for converting a Blockland brick files (.blb) to a 3d wavefront model (.obj). @blockland.us

blb2obj.py

import sys,decimal
def convert(input,output):
    input = open(input,"r")
    lines = input.readlines()
    input.close()
    output = open(output,"w")
    linecount = -1
    posCount = 0
    uvCount = 0
    normalCount = 0
    currentTex = ""
    output.write("#Exported by BLB2OBJ (zack0wack0.com)\nmltlib blockTextures.mtl\n")
    for line in lines:
        linecount = linecount + 1
        if len(line) >= 4:
            if line[0:4] == "TEX:" and len(lines)-linecount >= 15:
                if currentTex != line[4:] and line[4:] != "PRINT":
                    currentTex = line[4:]
                    output.write("usemtl " + currentTex)        
                if lines[linecount+1][0:9].strip() == "POSITION:":
                    lines[linecount+2] = lines[linecount+2].strip().split()
                    lines[linecount+2] = lines[linecount+2][0] + " " + lines[linecount+2][1] + " " + str(decimal.Decimal(lines[linecount+2][2]) / 3)
                    output.write("v " + lines[linecount+2].strip() + "\n")
                    lines[linecount+3] = lines[linecount+3].strip().split()
                    lines[linecount+3] = lines[linecount+3][0] + " " + lines[linecount+3][1] + " " + str(decimal.Decimal(lines[linecount+3][2]) / 3)
                    output.write("v " + lines[linecount+3].strip() + "\n")
                    lines[linecount+4] = lines[linecount+4].strip().split()
                    lines[linecount+4] = lines[linecount+4][0] + " " + lines[linecount+4][1] + " " + str(decimal.Decimal(lines[linecount+4][2]) / 3)
                    output.write("v " + lines[linecount+4].strip() + "\n")
                    lines[linecount+5] = lines[linecount+5].strip().split()
                    lines[linecount+5] = lines[linecount+5][0] + " " + lines[linecount+5][1] + " " + str(decimal.Decimal(lines[linecount+5][2]) / 3)
                    output.write("v " + lines[linecount+5].strip() + "\n")
                    posCount = posCount + 4
                if lines[linecount+6][0:10].strip() == "UV COORDS:":
                    output.write("vt " + lines[linecount+7].strip() + "\n")
                    output.write("vt " + lines[linecount+8].strip() + "\n")
                    output.write("vt " + lines[linecount+9].strip() + "\n")
                    output.write("vt " + lines[linecount+10].strip() + "\n")
                    uvCount = uvCount + 4
                if lines[linecount+11][0:8].strip() == "NORMALS:":
                    output.write("vn " + lines[linecount+12].strip() + "\n")
                    output.write("vn " + lines[linecount+13].strip() + "\n")
                    output.write("vn " + lines[linecount+14].strip() + "\n")
                    output.write("vn " + lines[linecount+15].strip() + "\n")
                    normalCount = normalCount + 4
                output.write("f " + str(posCount - 3) + "/" + str(uvCount - 3) + "/" + str(normalCount - 3) + " " + str(posCount - 2) + "/" + str(uvCount - 2) + "/" + str(normalCount - 2) + " " + str(posCount - 1) + "/" + str(uvCount - 1) + "/" + str(normalCount - 1) + " " + str(posCount) + "/" + str(uvCount) + "/" + str(normalCount) + "\n")
    output.close()
if(len(sys.argv) > 1):
    convert(sys.argv[1],sys.argv[1] + ".obj")