Don't rely on undefined order of execution
Lars Mueller
parent
4402f2a054
commit
eb0c6b28d3
117
b3d.lua
117
b3d.lua
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@ -63,12 +63,12 @@ function read(stream)
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end
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local function color()
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return {
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r = float(),
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g = float(),
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b = float(),
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a = float()
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}
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local ret = {}
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ret.r = float()
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ret.g = float()
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ret.b = float()
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ret.a = float()
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return ret
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end
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local function vector3()
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@ -76,7 +76,11 @@ function read(stream)
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end
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local function quaternion()
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return {[4] = float(), [1] = float(), [2] = float(), [3] = float()}
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local w = float()
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local x = float()
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local y = float()
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local z = float()
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return {x, y, z, w}
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end
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local function content()
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@ -89,14 +93,14 @@ function read(stream)
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TEXS = function()
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local textures = {}
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while content() do
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table.insert(textures, {
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file = string(),
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flags = int(),
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blend = int(),
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pos = float_array(2),
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scale = float_array(2),
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rotation = float()
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})
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local tex = {}
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tex.file = string()
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tex.flags = int()
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tex.blend = int()
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tex.pos = float_array(2)
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tex.scale = float_array(2)
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tex.rotation = float()
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table.insert(textures, tex)
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end
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return textures
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end,
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@ -105,14 +109,13 @@ function read(stream)
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brushes.n_texs = int()
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assert(brushes.n_texs <= 8)
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while content() do
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local brush = {
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name = string(),
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color = color(),
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shininess = float(),
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blend = float(),
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fx = float(),
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texture_id = {}
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}
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local brush = {}
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brush.name = string()
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brush.color = color()
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brush.shininess = float()
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brush.blend = float()
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brush.fx = float()
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brush.texture_id = {}
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for index = 1, brushes.n_texs do
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brush.texture_id[index] = optional_id()
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end
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@ -121,21 +124,19 @@ function read(stream)
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return brushes
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end,
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VRTS = function()
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local vertices = {
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flags = int(),
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tex_coord_sets = int(),
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tex_coord_set_size = int()
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}
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local vertices = {}
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vertices.flags = int()
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vertices.tex_coord_sets = int()
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vertices.tex_coord_set_size = int()
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assert(vertices.tex_coord_sets <= 8 and vertices.tex_coord_set_size <= 4)
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local has_normal = (vertices.flags % 2 == 1) or nil
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local has_color = (math.floor(vertices.flags / 2) % 2 == 1) or nil
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while content() do
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local vertex = {
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pos = vector3(),
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normal = has_normal and vector3(),
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color = has_color and color(),
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tex_coords = {}
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}
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local vertex = {}
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vertex.pos = vector3()
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vertex.normal = has_normal and vector3()
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vertex.color = has_color and color()
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vertex.tex_coords = {}
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for tex_coord_set = 1, vertices.tex_coord_sets do
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local tex_coords = {}
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for tex_coord = 1, vertices.tex_coord_set_size do
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@ -148,20 +149,21 @@ function read(stream)
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return vertices
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end,
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TRIS = function()
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local tris = {
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brush_id = id(),
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vertex_ids = {}
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}
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local tris = {}
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tris.brush_id = id()
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tris.vertex_ids = {}
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while content() do
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table.insert(tris.vertex_ids, {id(), id(), id()})
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local i = id()
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local j = id()
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local k = id()
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table.insert(tris.vertex_ids, {i, j, k})
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end
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return tris
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end,
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MESH = function()
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local mesh = {
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brush_id = optional_id(),
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vertices = chunk{VRTS = true}
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}
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local mesh = {}
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mesh.brush_id = optional_id()
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mesh.vertices = chunk{VRTS = true}
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mesh.triangle_sets = {}
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repeat
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local tris = chunk{TRIS = true}
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@ -199,7 +201,8 @@ function read(stream)
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flags = flags
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}
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while content() do
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local frame = {frame = int()}
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local frame = {}
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frame.frame = int()
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if position then
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frame.position = vector3()
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end
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@ -216,22 +219,20 @@ function read(stream)
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return bone
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end,
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ANIM = function()
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return {
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-- flags are unused
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flags = int(),
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frames = int(),
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fps = float()
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}
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local ret = {}
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ret.flags = int() -- flags are unused
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ret.frames = int()
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ret.fps = float()
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return ret
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end,
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NODE = function()
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local node = {
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name = string(),
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position = vector3(),
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scale = vector3(),
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keys = {},
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rotation = quaternion(),
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children = {}
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}
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local node = {}
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node.name = string()
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node.position = vector3()
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node.scale = vector3()
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node.keys = {}
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node.rotation = quaternion()
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node.children = {}
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local node_type
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-- See https://github.com/blitz-research/blitz3d/blob/master/blitz3d/loader_b3d.cpp#L263
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-- Order is not validated; double occurences of mutually exclusive node def are
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