Vmd 文件解析¶

MikuMikuDance vmd 文件解析代码，用GDScript 编写
代码¶

class_name VMD
var version:int
var model_name

var bones:Array
var morphs:Array
var cameras:Array 

func parse_file(path):
    var pos:int = 0
    var value = FileAccess.file_exists(path)
    var file = FileAccess.get_file_as_bytes(path)
    var head_string = file.slice(0,30).get_string_from_ascii()
    pos += 30
    if head_string == "Vocaloid Motion Data file":
        version = 1
        model_name = file.slice(pos,10).get_string_from_utf8()
        pos += 10
    elif  head_string  == "Vocaloid Motion Data 0002":
        version = 2
        model_name = file.slice(pos,20).get_string_from_utf8()
        pos += 20

    pos = parse_bone(file, pos)
    pos = parse_morph(file, pos)
    pos = parse_camera(file,pos)

    print("version: ", version)
    print("model_name ", model_name)


# every bone has 111 bytes
func parse_bone(file,pos):
    var bone_record = file.decode_u32(pos)
    pos += 4
    for index in range(bone_record):

        var bone_name = file.slice(pos,15).get_string_from_utf8()

        print("bone name: ", bone_name)
        pos += 15
        var frame_time:int = file.decode_32(pos)
        pos += 4

        var tx: float = file.decode_float(pos)
        pos += 4
        var ty: float = file.decode_float(pos)
        pos += 4
        var tz: float = file.decode_float(pos)
        pos += 4

        var rx: float = file.decode_float(pos)
        pos += 4
        var ry: float = file.decode_float(pos)
        pos += 4
        var rz: float = file.decode_float(pos)
        pos += 4
        var rw: float = file.decode_float(pos)
        pos += 4

        var txc1: int = file.decode_32(pos)
        pos += 4
        var txc2: int = file.decode_32(pos)
        pos += 4
        var txc3: int = file.decode_32(pos)
        pos += 4
        var txc4: int = file.decode_32(pos)
        pos += 4

        var tyc1: int = file.decode_32(pos)
        pos += 4
        var tyc2: int = file.decode_32(pos)
        pos += 4
        var tyc3: int = file.decode_32(pos)
        pos += 4
        var tyc4: int = file.decode_32(pos)
        pos += 4

        var tzc1: int = file.decode_32(pos)
        pos += 4
        var tzc2: int = file.decode_32(pos)
        pos += 4
        var tzc3: int = file.decode_32(pos)
        pos += 4
        var tzc4: int = file.decode_32(pos)
        pos += 4

        var rc1: int = file.decode_32(pos)
        pos += 4
        var rc2: int = file.decode_32(pos)
        pos += 4
        var rc3: int = file.decode_32(pos)
        pos += 4
        var rc4: int = file.decode_32(pos)
        pos += 4

        var bone_data = [bone_name,frame_time,tx,ty,tz,rx,ry,rz,rw,txc1,txc2,txc3,txc4,tyc1,tyc2,tyc3,tyc4,tzc1,tzc2,tzc3,tzc4,rc1,rc2,rc3,rc4]
        bones.append_array(bone_data)

    return pos

# morph has 23 bytes    
func parse_morph(file, pos):
    var number:int = file.decode_u32(pos)
    print("morph number: ", number)
    pos += 4
    for index in range(number):
        var name = file.slice(pos, 15).get_string_from_utf8()
        pos += 15
        var frame_time:int = file.decode_32(pos)
        pos += 4
        var weight: float = file.decode_float(pos +1)
        pos += 4
        var morph_array = [name, frame_time, weight]
        morphs.append_array(morph_array)
    return pos

# camera has 61 bytes   
func parse_camera(file, pos):
    var number: int = file.decode_u32(pos)
    print("camera number: ", number)
    pos += 4

    for index in range(number):
        var frame_time:int = file.decode_s32(pos)
        pos += 4

        var distance:float = file.decode_float(pos)
        pos += 4

        var px: float = file.decode_float(pos)
        pos += 4
        var py: float = file.decode_float(pos)
        pos += 4
        var pz: float = file.decode_float(pos)
        pos += 4

        var rx: float = file.decode_float(pos)
        pos += 4
        var ry: float = file.decode_float(pos)
        pos += 4
        var rz: float = file.decode_float(pos)
        pos += 4

        var txc1: int = file.decode_s8(pos)
        pos += 1
        var txc2: int = file.decode_s8(pos)
        pos += 1
        var txc3: int = file.decode_s8(pos)
        pos += 1
        var txc4: int = file.decode_s8(pos)
        pos += 1

        var tyc1: int = file.decode_s8(pos)
        pos += 1
        var tyc2: int = file.decode_s8(pos)
        pos += 1
        var tyc3: int = file.decode_s8(pos)
        pos += 1
        var tyc4: int = file.decode_s8(pos)
        pos += 1

        var tzc1: int = file.decode_s8(pos)
        pos += 1
        var tzc2: int = file.decode_s8(pos)
        pos += 1
        var tzc3: int = file.decode_s8(pos)
        pos += 1
        var tzc4: int = file.decode_s8(pos)
        pos += 1

        var qc1: int = file.decode_s8(pos)
        pos += 1
        var qc2: int = file.decode_s8(pos)
        pos += 1
        var qc3: int = file.decode_s8(pos)
        pos += 1
        var qc4: int = file.decode_s8(pos)
        pos += 1

        var dc1: int = file.decode_s8(pos)
        pos += 1
        var dc2: int = file.decode_s8(pos)
        pos += 1
        var dc3: int = file.decode_s8(pos)
        pos += 1
        var dc4: int = file.decode_s8(pos)
        pos += 1

        var vc1: int = file.decode_s8(pos)
        pos += 1
        var vc2: int = file.decode_s8(pos)
        pos += 1
        var vc3: int = file.decode_s8(pos)
        pos += 1
        var vc4: int = file.decode_s8(pos)
        pos += 1

        var view__angle = file.decode_float(pos)
        pos += 4

        var orthgraphic = file.decode_s8(pos)
        pos += 1

        var camera_data = [frame_time, distance,px,py,pz,rx,ry,rz,txc1,txc2,txc3,txc4,tyc1,tyc2,tyc3,tyc4,tzc1,tzc2,tzc3,tzc4,qc1,qc2,qc3,qc4,dc1,dc2,dc3,dc4,vc1,vc2,vc3,vc4]
        cameras.append_array(camera_data)
    return pos
Vmd 文件解析¶

代码¶

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