Initial version.

Signed-off-by: Xiaomao Chen <xiaomao5@live.com>

.gitignore

@@ -34,3 +34,12 @@ nosetests.xml
 .mr.developer.cfg
 .project
 .pydevproject
+
+.idea
+*.obj
+*.html
+*.exp
+*.lib
+punyverse/assets/textures/*_medium.*
+punyverse/assets/textures/*_small.*
+temp

punyverse/__init__.py

@@ -0,0 +1 @@
+

punyverse/__main__.py

@@ -0,0 +1,17 @@
+#!/usr/bin/python
+INITIAL_WIN_HEIGHT = 540
+INITIAL_WIN_WIDTH = 700
+WIN_TITLE = "Punyverse"
+
+def main():
+    import pyglet
+    from punyverse.game import Applet
+
+    pyglet.options['shadow_window'] = False
+
+    Applet(width=INITIAL_WIN_WIDTH, height=INITIAL_WIN_HEIGHT, caption=WIN_TITLE, resizable=True, vsync=0)
+    pyglet.app.run()
+
+
+if __name__ == '__main__':
+    main()

punyverse/__main__.pyw

@@ -0,0 +1,4 @@
+from space_torus.__main__ import main
+
+if __name__ == '__main__':
+    main()

punyverse/_glgeom.pyx

@@ -0,0 +1,83 @@
+from libc.math cimport sin, cos, sqrt
+from libc.stdlib cimport malloc, free
+from libc.string cimport memcpy
+cimport cython
+
+include "_cyopengl.pxi"
+cdef float PI = 3.1415926535897932324626
+cdef float TWOPI = PI * 2
+
+cdef extern from "Python.h":
+    object PyBytes_FromStringAndSize(const char *s, Py_ssize_t len)
+    const char* PyBytes_AsString(bytes o)
+
+@cython.cdivision(True)
+cpdef torus(float major_radius, float minor_radius, int n_major, int n_minor, tuple material, int shininess=125):
+    '''
+        Torus function from the OpenGL red book.
+    '''
+    glPushAttrib(GL_CURRENT_BIT)
+    glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, [material[0], material[1], material[2], material[3]])
+    glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, [1, 1, 1, 1])
+    glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, shininess)
+
+    assert n_major > 0 and n_minor > 0
+    assert minor_radius > 0 and major_radius > 0
+
+    cdef float major_s, minor_s
+    major_s = TWOPI / n_major
+    minor_s = TWOPI / n_minor
+
+    cdef float a0, a1, x0, y0, x1, y1, b, c, r, z, m, x, y, z2
+    cdef int i, j
+
+    for i in xrange(n_major):
+        a0 = i * major_s
+        a1 = a0 + major_s
+        x0 = cos(a0)
+        y0 = sin(a0)
+        x1 = cos(a1)
+        y1 = sin(a1)
+
+        glBegin(GL_TRIANGLE_STRIP)
+
+        for j in xrange(n_minor + 1):
+            b = j * minor_s
+            c = cos(b)
+            r = minor_radius * c + major_radius
+            z = minor_radius * sin(b)
+
+            x = x0 * c
+            y = y0 * c
+            z2 = z / minor_radius
+            m = 1.0 / sqrt(x * x + y * y + z2 * z2)
+            glNormal3f(x * m, y * z, z2 * m)
+            glVertex3f(x0 * r, y0 * r, z)
+
+            x = x1 * c
+            y = y1 * c
+            m = 1.0 / sqrt(x * x + y * y + z2 * z2)
+            glNormal3f(x * m, y * z, z2 * m)
+            glVertex3f(x1 * r, y1 * r, z)
+
+        glEnd()
+    glPopAttrib()
+
+cpdef bytes bgr_to_rgb(bytes buffer, int width, int height, bint alpha=0, bint bottom_up=1):
+    cdef int length = len(buffer)
+    cdef int depth = length / (width * height)
+    cdef int depth2 = depth - alpha
+    cdef char *result = <char*>malloc(length)
+    cdef const char *source = PyBytes_AsString(buffer)
+    cdef int x, y, ioffset, ooffset, i, row = width * depth
+    for y in xrange(height):
+        for x in xrange(width):
+            ioffset = y * width * depth + x * depth
+            ooffset = (height - y - 1 if bottom_up else y) * row + x * depth
+            for i in xrange(depth2):
+                result[ooffset+i] = source[ioffset+depth2-i-1]
+            if alpha:
+                result[ooffset+depth2] = source[ioffset+depth2]
+    cdef object final = PyBytes_FromStringAndSize(result, length)
+    free(result)
+    return final

punyverse/_model.pyx

@@ -0,0 +1,345 @@
+from libc.string cimport strcmp, strlen
+from libc.stdlib cimport malloc, free, atof
+from libc.stdio cimport fopen, fclose, fgets, FILE
+cimport cython
+
+from texture import load_texture
+include "_cyopengl.pxi"
+from uuid import uuid4
+import os
+
+cdef enum:
+    FACE_TRIANGLES
+    FACE_QUADS
+
+cdef class Face(object):
+    cdef public int type
+    cdef public list verts, norms, texs, vertices, normals, textures
+    
+    def __init__(self, int type, list verts, list norms, list texs,
+                 list vertices, list normals, list textures):
+        self.type = type
+        self.verts = verts
+        self.norms = norms
+        self.texs = texs
+        self.vertices = vertices
+        self.normals = normals
+        self.textures = textures
+
+cdef class Material(object):
+    cdef public str name, texture
+    cdef public tuple Ka, Kd, Ks
+    cdef public double shininess
+    
+    def __init__(self, str name, str texture=None, tuple Ka=(0, 0, 0),
+                 tuple Kd=(0, 0, 0), tuple Ks=(0, 0, 0), double shininess=0.0):
+        self.name = name
+        self.texture = texture
+        self.Ka = Ka
+        self.Kd = Kd
+        self.Ks = Ks
+        self.shininess = shininess
+
+cdef class Group(object):
+    cdef public str name
+    cdef public tuple min
+    cdef public Material material
+    cdef public list faces, indices, vertices, normals, textures
+    cdef public int idx_count
+    
+    def __init__(self, str name=None):
+        if name is None:
+            self.name = str(uuid4())
+        else:
+            self.name = name
+        self.min = ()
+        self.material = None
+        self.faces = []
+        self.indices = []
+        self.vertices = []
+        self.normals = []
+        self.textures = []
+        self.idx_count = 0
+
+    def pack(self):
+        min_x, min_y, min_z = 0, 0, 0
+        for face in self.faces:
+            for x, y, z in face.vertices:
+                min_x = max(min_x, abs(x))
+                min_y = max(min_y, abs(y))
+                min_z = max(min_x, abs(z))
+        self.min = (min_x, min_y, min_z)
+
+cdef class WavefrontObject(object):
+    cdef unicode root
+    cdef public list vertices, normals, textures, groups
+    cdef public dict materials
+    cdef unicode path
+    cdef Material current_material
+    cdef Group current_group
+    def __init__(self, unicode path):
+        self.path = path
+        self.root = os.path.dirname(path)
+        self.vertices = []
+        self.normals = []
+        self.textures = []
+        self.groups = []
+        self.materials = {}
+        
+        self.perform_io(self.path)
+    
+    cdef void new_material(self, list words):
+        material = Material(words[1])
+        self.materials[words[1]] = material
+        self.current_material = material
+    
+    cdef void Ka(self, list words):
+        self.current_material.Ka = (float(words[1]), float(words[2]), float(words[3]))
+    
+    cdef void Kd(self, list words):
+        self.current_material.Kd = (float(words[1]), float(words[2]), float(words[3]))
+    
+    cdef void Ks(self, list words):
+        self.current_material.Ks = (float(words[1]), float(words[2]), float(words[3]))
+    
+    cdef void material_shininess(self, list words):
+        self.current_material.shininess = min(float(words[1]), 125)
+    
+    cdef void material_texture(self, list words):
+        self.current_material.texture = words[-1]
+    
+    @cython.nonecheck(False)
+    cdef void vertex(self, list words):
+        self.vertices.append((float(words[1]), float(words[2]), float(words[3])))
+    
+    @cython.nonecheck(False)
+    cdef void normal(self, list words):
+        self.normals.append((float(words[1]), float(words[2]), float(words[3])))
+    
+    cdef void texture(self, list words):
+        cdef int l = len(words)
+        cdef object x = 0, y = 0, z = 0
+        if l >= 2:
+            x = float(words[1])
+        if l >= 3:
+            # OBJ origin is at upper left, OpenGL origin is at lower left
+            y = 1 - float(words[2])
+        if l >= 4:
+            z = float(words[3])
+        self.textures.append((x, y, z))
+    
+    cdef void face(self, list words):
+        cdef int l = len(words)
+        cdef int type = -1
+        cdef int vertex_count = l - 1
+        cdef list face_vertices = [], face_normals = [], face_textures = []
+
+        if vertex_count == 3:
+            type = FACE_TRIANGLES
+        else:
+            type = FACE_QUADS
+
+        cdef int current_value = -1, texture_len = len(self.textures)
+        cdef list raw_faces, vindices = [], nindices = [], tindices = []
+
+        for i in xrange(1, vertex_count + 1):
+            raw_faces = words[i].split('/')
+            l = len(raw_faces)
+
+            current_value = int(raw_faces[0])
+            vindices.append(current_value - 1)
+            face_vertices.append(self.vertices[current_value - 1])
+
+            if l == 1:
+                continue
+            if l >= 2 and raw_faces[1]:
+                current_value = int(raw_faces[1])
+                if current_value <= texture_len:
+                    tindices.append(current_value - 1)
+                    face_textures.append(self.textures[current_value - 1])
+            if l >= 3 and raw_faces[2]:
+                current_value = int(raw_faces[2])
+                nindices.append(current_value - 1)
+                face_normals.append(self.normals[current_value - 1])
+
+        cdef Group group
+        if self.current_group is None:
+            self.current_group = group = Group()
+            self.groups.append(group)
+        else:
+            group = self.current_group
+
+        group.vertices += face_vertices
+        group.normals += face_normals
+        group.textures += face_textures
+        idx_count = group.idx_count
+        group.indices += (idx_count + 1, idx_count + 2, idx_count + 3)
+        group.idx_count += 3
+
+        group.faces.append(Face(type, vindices, nindices, tindices, face_vertices, face_normals, face_textures))
+
+    cdef void material(self, list words):
+        self.perform_io(os.path.join(self.root, words[1]))
+        
+    cdef void use_material(self, list words):
+        mat = words[1]
+        try:
+            self.current_group.material = self.materials[mat]
+        except KeyError:
+            print "Warning: material %s undefined, only %s defined." % (mat, self.materials)
+        except AttributeError:
+            print "Warning: no group"
+
+    cdef void group(self, list words):
+        name = words[1]
+        group = Group(name)
+
+        if self.groups:
+            self.current_group.pack()
+        self.groups.append(group)
+        self.current_group = group
+
+    cdef inline void perform_io(self, unicode file):
+        mbcsfile = file.encode('mbcs')
+        cdef char* fname = mbcsfile
+    
+        cdef FILE* cfile
+        cfile = fopen(fname, 'rb')
+        if cfile == NULL:
+            raise IOError(2, "No such file or directory: '%s'" % file)
+    
+        cdef size_t bufsize = 2048
+        cdef char *buf = <char*>malloc(bufsize)
+        cdef ssize_t read
+        cdef char *type
+        cdef list words
+        cdef int hash, length
+     
+        while fgets(buf, bufsize, cfile):
+            if buf[0] in (0, 10, 13, 35):
+                continue # Empty or comment
+            words = buf.split()
+            type = words[0]
+
+            length = strlen(type)
+            if not length:
+                continue
+            elif length < 3:
+                hash = type[0] << 8 | type[1]
+                if hash == 0x7600:  # v\0
+                    self.vertex(words)
+                elif hash == 0x766e: # vn
+                    self.normal(words)
+                elif hash == 0x7674: # vt
+                    self.texture(words)
+                elif hash == 0x6600: # f
+                    self.face(words)
+                elif hash == 0x6700: # g
+                    self.group(words)
+                elif hash == 0x6f00: # o
+                    self.group(words)
+                elif hash == 0x4b61: # Ka
+                    self.Ka(words)
+                elif hash == 0x4b64: # Kd
+                    self.Kd(words)
+                elif hash == 0x4b73: # Ks
+                    self.Ks(words)
+                elif hash == 0x4e73: # Ns
+                    self.material_shininess(words)
+            elif strcmp(type, b'mtllib') == 0:
+                self.material(words)
+            elif strcmp(type, b'usemtl') == 0:
+                self.use_material(words)
+            elif strcmp(type, b'newmtl') == 0:
+                self.new_material(words)
+            elif strcmp(type, b'map_Kd') == 0:
+                self.material_texture(words)
+        free(buf)
+        fclose(cfile)
+
+def load_model(path):
+    path = os.path.join(os.path.dirname(__file__), 'assets', 'models', path)
+    if not isinstance(path, unicode):
+        path = path.decode('mbcs')
+    return WavefrontObject(path)
+
+@cython.nonecheck(False)
+cdef inline void point(Face f, WavefrontObject m, int tex_id, float sx, float sy, float sz, int n):
+    cdef float x, y, z
+    cdef tuple normal, texture
+    if f.norms:
+        normal = m.normals[f.norms[n]]
+        glNormal3f(normal[0], normal[1], normal[2])
+    if tex_id:
+        texture = m.textures[f.texs[n]]
+        glTexCoord2f(texture[0], texture[1])
+
+    x, y, z = m.vertices[f.verts[n]]
+    glVertex3f(x * sx, y * sy, z * sz)
+
+cpdef int model_list(WavefrontObject model, float sx=1, float sy=1, float sz=1, object rotation=(0, 0, 0)):
+    for m, text in model.materials.iteritems():
+        if text.texture:
+            load_texture(os.path.join(model.root, text.texture))
+
+    cdef int display = glGenLists(1)
+
+    glNewList(display, GL_COMPILE)
+    glPushMatrix()
+    glPushAttrib(GL_CURRENT_BIT)
+
+    cdef float pitch, yaw, roll
+    cdef float kx, ky, kz
+    
+    pitch, yaw, roll = rotation
+    glPushAttrib(GL_TRANSFORM_BIT)
+    glRotatef(pitch, 1, 0, 0)
+    glRotatef(yaw, 0, 1, 0)
+    glRotatef(roll, 0, 0, 1)
+    glPopAttrib()
+
+    cdef Face f
+    cdef Group g
+    cdef int tex_id
+
+    for g in model.groups:
+        tex_id = 0
+
+        if tex_id:
+            glEnable(GL_TEXTURE_2D)
+            glBindTexture(GL_TEXTURE_2D, tex_id)
+        else:
+            glBindTexture(GL_TEXTURE_2D, 0)
+            glDisable(GL_TEXTURE_2D)
+
+        if g.material is not None:
+            if g.material.texture is not None:
+                tex_id = load_texture(os.path.join(model.root, g.material.texture))
+            if g.material.Ka:
+                kx, ky, kz = g.material.Ka
+                glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, [kx, ky, kz, 1])
+            if g.material.Kd:
+                kx, ky, kz = g.material.Kd
+                glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, [kx, ky, kz, 1])
+            if g.material.Ks:
+                kx, ky, kz = g.material.Ks
+                glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, [kx, ky, kz, 1])
+            glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, g.material.shininess)
+
+        glBegin(GL_TRIANGLES)
+        for f in g.faces:
+            point(f, model, tex_id, sx, sy, sz, 0)
+            point(f, model, tex_id, sx, sy, sz, 1)
+            point(f, model, tex_id, sx, sy, sz, 2)
+
+            if f.type == FACE_QUADS:
+                point(f, model, tex_id, sx, sy, sz, 2)
+                point(f, model, tex_id, sx, sy, sz, 3)
+                point(f, model, tex_id, sx, sy, sz, 0)
+        glEnd()
+
+    glPopAttrib()
+    glPopMatrix()
+
+    glEndList()
+    return display

punyverse/assets/models/asteroids/asteroid.mtl

@@ -0,0 +1,11 @@
+# Blender MTL File: 'None'
+# Material Count: 1
+
+newmtl Material
+Ns 96.078431
+Ka 0.000000 0.000000 0.000000
+Kd 0.520996 0.473531 0.337164
+Ks 0.079916 0.069096 0.039636
+Ni 1.000000
+d 1.000000
+illum 2

punyverse/assets/models/satellites/iss.mtl

@@ -0,0 +1,110 @@
+# Blender MTL File: 'None'
+# Material Count: 12
+
+newmtl Brown
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.238431 0.189074 0.102853
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl ISSDarkMetal
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.070138 0.070138 0.070138
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl ISSGray2
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.241098 0.241098 0.241098
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl ISSMetal1
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.381373 0.381373 0.381373
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl ISSSolarPanels
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.043620 0.023622 0.301177
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl ISSWhiteMetal
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.561093 0.561093 0.561093
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl _Brown
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.238431 0.189074 0.102853
+Ks 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl _ISSDarkMetal
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.070138 0.070138 0.070138
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl _ISSGray2
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.241098 0.241098 0.241098
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl _ISSMetal1
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.381373 0.381373 0.381373
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl _ISSSolarPanels
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.043620 0.023622 0.301177
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2
+
+newmtl _ISSWhiteMetal
+Ns 25
+Ka 0.000000 0.000000 0.000000
+Kd 0.561093 0.561093 0.561093
+Ks 0.500000 0.500000 0.500000
+Ni 1.000000
+d 1.000000
+illum 2

punyverse/camera.py

@@ -0,0 +1,47 @@
+from math import *
+
+
+class Camera(object):
+    def __init__(self, x=0, y=0, z=0, pitch=0, yaw=0, roll=0):
+        self.x = x
+        self.y = y
+        self.z = z
+        self.pitch = pitch
+        self.yaw = yaw
+        self.roll = roll
+
+    def move(self, dx, dy, dz):
+        pitch = self.pitch
+        yaw = self.yaw
+        if pitch > 90 or pitch < -90:
+            pitch = -pitch
+            dx = -dx
+            dy = -dy
+            dz = -dz
+        self.z += dx * cos(radians(yaw - 90)) + dz * cos(radians(yaw))
+        self.x -= dx * sin(radians(yaw - 90)) + dz * sin(radians(yaw))
+        self.y += dy * sin(radians(pitch - 90)) + dz * sin(radians(pitch))
+
+    def mouse_move(self, dx, dy):
+        if self.pitch > 90 or self.pitch < -90:
+            dx = -dx
+        if self.yaw + dx >= 360:
+            self.yaw = self.yaw + dx - 360
+        elif self.yaw + dx < 0:
+            self.yaw = 360 - self.yaw + dx
+        else:
+            self.yaw += dx
+
+        self.pitch -= dy
+        if self.pitch < -180:
+            self.pitch += 360
+        elif self.pitch > 180:
+            self.pitch -= 360
+
+    def direction(self):
+        m = cos(radians(self.pitch))
+
+        dy = -sin(radians(self.pitch))
+        dx = cos(radians(self.yaw - 90)) * m
+        dz = sin(radians(self.yaw - 90)) * m
+        return dx, dy, dz

punyverse/entity.py

@@ -0,0 +1,72 @@
+from punyverse import framedata
+from math import radians, sin, cos
+
+class Entity(object):
+    def __init__(self, id, location, rotation=(0, 0, 0), direction=(0, 0, 0), background=False):
+        self.id = id
+        self.location = location
+        self.rotation = rotation
+        self.direction = direction
+        self.background = background
+
+    def update(self):
+        x, y, z = self.location
+        dx, dy, dz = self.direction
+        self.location = x + dx, y + dy, z + dz
+
+
+class Asteroid(Entity):
+    def __init__(self, *args, **kwargs):
+        super(Asteroid, self).__init__(*args, **kwargs)
+
+    def update(self):
+        super(Asteroid, self).update()
+        rx, ry, rz = self.rotation
+        # Increment all axis to 'spin' 
+        self.rotation = rx + 1, ry + 1, rz + 1
+
+
+class Planet(Entity):
+    def __init__(self, *args, **kwargs):
+        self.delta = kwargs.pop('delta', 5)
+        self.atmosphere = kwargs.pop('atmosphere', 0)
+        self.cloudmap = kwargs.pop('cloudmap', 0)
+        self.last_tick = 0
+        super(Planet, self).__init__(*args, **kwargs)
+
+    def update(self):
+        super(Planet, self).update()
+
+        if self.last_tick != framedata.tick:
+            self.last_tick = framedata.tick
+            pitch, yaw, roll = self.rotation
+            roll += self.delta / 100.0
+            self.rotation = pitch, yaw, roll
+
+
+class Satellite(Planet):
+    def __init__(self, *args, **kwargs):
+        self.parent = kwargs.pop('parent')
+        self.orbit_speed = kwargs.pop('orbit_speed', 1)
+        self.inclination = kwargs.pop('inclination', 0)
+        self.distance = kwargs.pop('distance', 100)
+        self.theta = 0
+        super(Satellite, self).__init__(*args, **kwargs)
+
+    def update(self):
+        super(Planet, self).update()
+
+        if self.last_tick != framedata.tick:
+            self.last_tick = framedata.tick
+            pitch, yaw, roll = self.rotation
+            roll += self.delta / 100.0
+            self.rotation = pitch, yaw, roll
+
+            self.parent.update()
+            x, y, z = self.location
+            px, py, pz = self.parent.location
+            self.theta += self.orbit_speed
+            x = cos(radians(self.theta)) * self.distance + px
+            z = sin(radians(self.theta)) * self.distance + pz
+            self.location = (x, y, z)
+

punyverse/framedata.py

@@ -0,0 +1 @@
+tick = 0

punyverse/game.py

@@ -0,0 +1,293 @@
+#!/usr/bin/python
+from operator import attrgetter
+import sys
+
+from camera import Camera
+from widgets import *
+
+try:
+    from _model import *
+except ImportError:
+    from model import *
+from world import *
+import texture
+
+try:
+    from pyglet.gl import *
+    from pyglet.gl.glu import *
+    from pyglet.window import key, mouse
+    import pyglet
+except ImportError:
+    print "Pyglet not installed correctly, or at all."
+    sys.exit()
+
+from punyverse.glgeom import *
+from punyverse import framedata
+
+from math import *
+import time
+import random
+from time import clock
+
+INITIAL_SPEED = 0       # The initial speed of the player
+TICKS_PER_SECOND = 20   # How many times to update game per second
+MOUSE_SENSITIVITY = 0.3 # Mouse sensitivity, 0..1, none...hyperspeed
+
+MAX_DELTA = 5
+SEED = int(time.time())
+
+
+def entity_distance(x0, y0, z0):
+    def distance(entity):
+        x1, y1, z1 = entity.location
+        return hypot(hypot(x1 - x0, y1 - y0), z1 - z0)
+
+    return distance
+
+
+class Applet(pyglet.window.Window):
+    def update(self, dt):
+        cam = self.cam
+        if self.exclusive:
+            if key.A in self.keys:
+                cam.roll += 4
+            if key.S in self.keys:
+                cam.roll -= 4
+            cam.move(0, 0, -self.speed * 128 * 0.003)
+
+        framedata.tick += 1
+        for entity in self.world.tracker:
+            entity.update()
+
+    def __init__(self, *args, **kwargs):
+        super(Applet, self).__init__(*args, **kwargs)
+        l = clock()
+        self.fps = 0
+        self.world = load_world("world.json")
+        self.speed = INITIAL_SPEED
+        self.keys = set()
+        self.info = True
+        self.debug = False
+
+        self.label = pyglet.text.Label('', font_name='Consolas', font_size=12, x=10, y=self.height - 20,
+                                       color=(255,) * 4, multiline=True, width=600)
+        self.cam = Camera()
+
+        self.exclusive = False
+        pyglet.clock.schedule_interval(self.update, 1.0 / TICKS_PER_SECOND)
+
+        def update_fps(dt):
+            self.fps = pyglet.clock.get_fps()
+
+        pyglet.clock.schedule_interval(update_fps, 1)
+
+        glClearColor(0, 0, 0, 1)
+        glClearDepth(1.0)
+
+        texture.init()
+        if not texture.badcard:
+            glEnable(GL_BLEND)
+            glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
+            glEnable(GL_LINE_SMOOTH)
+            glEnable(GL_POLYGON_SMOOTH)
+            glHint(GL_LINE_SMOOTH_HINT, GL_NICEST)
+            glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST)
+
+        glAlphaFunc(GL_GEQUAL, 0.9)
+        glDepthFunc(GL_LEQUAL)
+        glEnable(GL_DEPTH_TEST)
+        glShadeModel(GL_SMOOTH)
+
+        glMatrixMode(GL_MODELVIEW)
+
+        glEnable(GL_LIGHTING)
+        glEnable(GL_LIGHT0)
+        glEnable(GL_LIGHT1)
+
+        glEnable(GL_POLYGON_OFFSET_FILL)
+
+        fv4 = GLfloat * 4
+
+        glLightfv(GL_LIGHT0, GL_POSITION, fv4(.5, .5, 1, 0))
+        glLightfv(GL_LIGHT0, GL_SPECULAR, fv4(.5, .5, 1, 1))
+        glLightfv(GL_LIGHT0, GL_DIFFUSE, fv4(1, 1, 1, 1))
+        glLightfv(GL_LIGHT1, GL_POSITION, fv4(1, 0, .5, 0))
+        glLightfv(GL_LIGHT1, GL_DIFFUSE, fv4(.5, .5, .5, 1))
+        glLightfv(GL_LIGHT1, GL_SPECULAR, fv4(1, 1, 1, 1))
+
+        self.asteroid_ids = [model_list(load_model(r"asteroids\01.obj"), 5, 5, 5, (0, 0, 0)),
+                             model_list(load_model(r"asteroids\02.obj"), 5, 5, 5, (0, 0, 0)),
+                             model_list(load_model(r"asteroids\03.obj"), 5, 5, 5, (0, 0, 0)),
+                             model_list(load_model(r"asteroids\04.obj"), 5, 5, 5, (0, 0, 0)),
+                             model_list(load_model(r"asteroids\05.obj"), 5, 5, 5, (0, 0, 0))]
+
+        c = self.cam
+        c.x, c.y, c.z = self.world.start
+        c.pitch, c.yaw, c.roll = self.world.direction
+
+        for entity in self.world.tracker:
+            entity.update()
+
+        print "Loaded in %s seconds." % (clock() - l)
+
+    def set_exclusive_mouse(self, exclusive):
+        super(Applet, self).set_exclusive_mouse(exclusive) # Pass to parent
+        self.exclusive = exclusive # Toggle flag
+
+    def on_mouse_press(self, x, y, button, modifiers):
+        if not self.exclusive:
+            self.set_exclusive_mouse(True)
+
+    def on_mouse_motion(self, x, y, dx, dy):
+        if self.exclusive: # Only handle camera movement if mouse is grabbed
+            self.cam.mouse_move(dx * MOUSE_SENSITIVITY, dy * MOUSE_SENSITIVITY)
+
+    def on_key_press(self, symbol, modifiers):
+        if self.exclusive: # Only handle keyboard input if mouse is grabbed
+            if symbol == key.ESCAPE:
+                pyglet.app.exit()
+            elif symbol == key.E:
+                self.set_exclusive_mouse(False) # Escape mouse
+            elif symbol == key.F:
+                self.set_fullscreen(not self.fullscreen)
+            elif symbol == key.NUM_ADD:
+                self.speed += 1
+            elif symbol == key.NUM_SUBTRACT:
+                self.speed -= 1
+            elif symbol == key.NUM_MULTIPLY:
+                self.speed += 10
+            elif symbol == key.NUM_DIVIDE:
+                self.speed -= 10
+            elif symbol == key.PAGEUP:
+                self.speed += 100
+            elif symbol == key.PAGEDOWN:
+                self.speed -= 100
+            elif symbol == key.I:
+                self.info = not self.info
+            elif symbol == key.D:
+                self.debug = not self.debug
+            elif symbol == key.Q:
+                c = self.cam
+                dx, dy, dz = c.direction()
+                speed = max(1, abs(self.speed) * 0.6)
+                dx *= speed
+                dy *= speed
+                dz *= speed
+                self.world.tracker.append(
+                    Asteroid(random.choice(self.asteroid_ids), (c.x, c.y - 3, c.z + 5), direction=(dx, dy, dz)))
+            else:
+                self.keys.add(symbol)
+
+    def on_key_release(self, symbol, modifiers):
+        if symbol in self.keys:
+            self.keys.remove(symbol)
+
+    def on_resize(self, width, height):
+        height = max(height, 1) # Prevent / by 0
+        self.label.y = height - 20
+        glViewport(0, 0, width, height)
+        glMatrixMode(GL_PROJECTION)
+        glLoadIdentity()
+        # A field of view of 45
+        gluPerspective(45.0, width / float(height), 0.1, 50000000.0)
+        glMatrixMode(GL_MODELVIEW)
+
+    def on_draw(self):
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
+        glLoadIdentity()
+
+        c = self.cam
+        x, y, z = c.x, c.y, c.z
+        glRotatef(c.pitch, 1, 0, 0)
+        glRotatef(c.yaw, 0, 1, 0)
+        glRotatef(c.roll, 0, 0, 1)
+        glTranslatef(-x, -y, -z)
+
+        glEnable(GL_LIGHTING)
+        glEnable(GL_BLEND)
+        world = self.world
+        if x != world.x or y != world.y or z != world.z:
+            world.tracker.sort(key=entity_distance(x, y, z), reverse=True)
+            world.tracker.sort(key=attrgetter('background'), reverse=True)
+            world.x, world.y, world.z = x, y, z
+
+        for entity in world.tracker:
+            x, y, z = entity.location
+            pitch, yaw, roll = entity.rotation
+
+            glPushMatrix()
+            glTranslatef(x, y, z)
+            glRotatef(pitch, 1, 0, 0)
+            glRotatef(yaw, 0, 1, 0)
+            glRotatef(roll, 0, 0, 1)
+            glPushAttrib(GL_CURRENT_BIT)
+            glCallList(entity.id)
+            if self.debug:
+                glPushMatrix()
+                glLineWidth(0.25)
+                glPolygonOffset(1, 1)
+                glDisable(GL_LIGHTING)
+                glDisable(GL_TEXTURE_2D)
+                glColor3f(0, 1, 0)
+                glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
+                glCallList(entity.id)
+                glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
+                glEnable(GL_LIGHTING)
+                glEnable(GL_TEXTURE_2D)
+                glPopMatrix()
+            glPopAttrib()
+            glPopMatrix()
+
+            if hasattr(entity, 'atmosphere') and entity.atmosphere:
+                glPushMatrix()
+                x0, y0, z0 = entity.location
+                dx, dy, dz = x - x0, y - y0, z - z0
+
+                distance = sqrt(dz * dz + dx * dx)
+                pitch = (360 - degrees(atan2(dy, distance)))
+                yaw = degrees(atan2(dx, dz))
+
+                glTranslatef(x0, y0, z0)
+                glRotatef(pitch, 1, 0, 0)
+                glRotatef(yaw, 0, 1, 0)
+                glCallList(entity.atmosphere)
+                glPopMatrix()
+
+            if hasattr(entity, "cloudmap") and entity.cloudmap:
+                glPushMatrix()
+                glEnable(GL_ALPHA_TEST)
+                glTranslatef(*entity.location)
+                pitch, yaw, roll = entity.rotation
+                glRotatef(pitch, 1, 0, 0)
+                glRotatef(yaw, 0, 1, 0)
+                glRotatef(roll, 0, 0, 1)
+                glCallList(entity.cloudmap)
+                glDisable(GL_ALPHA_TEST)
+                glPopMatrix()
+
+        glColor4f(1, 1, 1, 1)
+        glDisable(GL_TEXTURE_2D)
+
+        width, height = self.get_size()
+
+        if self.info:
+            ortho(width, height)
+
+            self.label.text = ('%d FPS @ (x=%.2f, y=%.2f, z=%.2f) @ %s\n'
+                               'Direction(pitch=%.2f, yaw=%.2f, roll=%.2f)') % (
+                self.fps, c.x, c.y, c.z, self.speed, c.pitch, c.yaw, c.roll)
+            self.label.draw()
+
+            glPushAttrib(GL_CURRENT_BIT | GL_LINE_BIT)
+
+            glLineWidth(2)
+
+            cx, cy = width / 2, height / 2
+
+            glColor3f(0, 0, 1)
+            crosshair(15, (cx, cy))
+            glColor4f(0, 1, 0, 1)
+            circle(20, 30, (cx, cy))
+            glPopAttrib()
+
+            frustrum()

punyverse/gencheap.bat

@@ -0,0 +1,17 @@
+@echo off
+cd %~dp0assets\textures
+call :convert earth.jpg earth_medium.jpg 2048x1024
+call :convert earth.jpg earth_small.jpg 1024x512
+call :convert moon.jpg moon_medium.jpg 2048x1024
+call :convert moon.jpg moon_small.jpg 1024x512
+call :convert mars.jpg mars_medium.jpg 2048x1024
+call :convert mars.jpg mars_small.jpg 1024x512
+call :convert jupiter.jpg jupiter_medium.jpg 2048x1024
+call :convert jupiter.jpg jupiter_small.jpg 1024x512
+call :convert saturn.jpg saturn_medium.jpg 2048x1024
+call :convert saturn.jpg saturn_small.jpg 1024x512
+goto :eof
+
+:convert
+echo Converting %1 to %2, size %3...
+if not exist %2 gm convert %1 -resize %3 %2

punyverse/glgeom.py

@@ -0,0 +1,166 @@
+from math import *
+from pyglet.gl import *
+from pyglet.gl.glu import *
+
+TWOPI = pi * 2
+
+
+def compile(pointer, *args, **kwargs):
+    display = glGenLists(1)
+    glNewList(display, GL_COMPILE)
+    pointer(*args, **kwargs)
+    glEndList()
+    return display
+
+
+def ortho(width, height):
+    glDisable(GL_LIGHTING)
+    glDisable(GL_DEPTH_TEST)
+    glMatrixMode(GL_PROJECTION)
+    glPushMatrix()
+    glLoadIdentity()
+    glOrtho(0, width, 0, height, -1, 1)
+    glMatrixMode(GL_MODELVIEW)
+    glPushMatrix()
+    glLoadIdentity()
+
+
+def frustrum():
+    glMatrixMode(GL_PROJECTION)
+    glPopMatrix()
+    glMatrixMode(GL_MODELVIEW)
+    glPopMatrix()
+    glEnable(GL_LIGHTING)
+    glEnable(GL_DEPTH_TEST)
+
+
+def crosshair(size, (cx, cy)):
+    glBegin(GL_LINES)
+    glVertex2f(cx - size, cy)
+    glVertex2f(cx + size, cy)
+    glVertex2f(cx, cy - size)
+    glVertex2f(cx, cy + size)
+    glEnd()
+
+
+def circle(r, seg, (cx, cy)):
+    glBegin(GL_LINE_LOOP)
+    for i in xrange(seg):
+        theta = TWOPI * i / seg
+        glVertex2f(cx + cos(theta) * r, cy + sin(theta) * r)
+    glEnd()
+
+
+def disk(rinner, router, segs, tex):
+    glEnable(GL_TEXTURE_2D)
+    glDisable(GL_LIGHTING)
+    glBindTexture(GL_TEXTURE_2D, tex)
+    res = segs * 5
+
+    glBegin(GL_TRIANGLE_STRIP)
+    texture = 0
+    factor = TWOPI / res
+    theta = 0
+    for n in xrange(res + 1):
+        theta += factor
+        x = cos(theta)
+        y = sin(theta)
+        glTexCoord2f(0, texture)
+        glVertex2f(rinner * x, rinner * y)
+        glTexCoord2f(1, texture)
+        glVertex2f(router * x, router * y)
+        texture ^= 1
+    glEnd()
+    glEnable(GL_LIGHTING)
+    glDisable(GL_TEXTURE_2D)
+
+
+def sphere(r, lats, longs, tex, lighting=True, fv4=GLfloat * 4):
+    '''
+        Sphere function from the OpenGL red book.
+    '''
+    sphere = gluNewQuadric()
+    gluQuadricDrawStyle(sphere, GLU_FILL)
+    gluQuadricTexture(sphere, True)
+    if lighting:
+        gluQuadricNormals(sphere, GLU_SMOOTH)
+
+    glEnable(GL_TEXTURE_2D)
+    if lighting:
+        glDisable(GL_BLEND)
+        glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, fv4(1, 1, 1, 0))
+        glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, fv4(1, 1, 1, 0))
+        glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 125)
+    else:
+        glDisable(GL_LIGHTING)
+    glBindTexture(GL_TEXTURE_2D, tex)
+
+    gluSphere(sphere, r, lats, longs)
+
+    glBindTexture(GL_TEXTURE_2D, 0)
+    glDisable(GL_TEXTURE_2D)
+    glEnable(GL_LIGHTING)
+    glEnable(GL_BLEND)
+    gluDeleteQuadric(sphere)
+
+
+def colourball(r, lats, longs, colour, fv4=GLfloat * 4):
+    '''
+        Sphere function from the OpenGL red book.
+    '''
+    sphere = gluNewQuadric()
+
+    glDisable(GL_BLEND)
+    glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, fv4(*colour))
+    glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, fv4(1, 1, 1, 1))
+    glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 125)
+
+    gluSphere(sphere, r, lats, longs)
+
+    glEnable(GL_BLEND)
+    gluDeleteQuadric(sphere)
+
+
+try:
+    from _glgeom import torus
+except ImportError:
+    def torus(major_radius, minor_radius, n_major, n_minor, material, shininess=125, fv4=GLfloat * 4):
+        '''
+            Torus function from the OpenGL red book.
+        '''
+        glPushAttrib(GL_CURRENT_BIT)
+        glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, fv4(*material))
+        glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, fv4(1, 1, 1, 1))
+        glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, shininess)
+
+        major_s = TWOPI / n_major
+        minor_s = TWOPI / n_minor
+
+        def n(x, y, z):
+            m = 1.0 / sqrt(x * x + y * y + z * z)
+            return x * m, y * m, z * m
+
+        for i in xrange(n_major):
+            a0 = i * major_s
+            a1 = a0 + major_s
+            x0 = cos(a0)
+            y0 = sin(a0)
+            x1 = cos(a1)
+            y1 = sin(a1)
+
+            glBegin(GL_TRIANGLE_STRIP)
+
+            for j in xrange(n_minor + 1):
+                b = j * minor_s
+                c = cos(b)
+                r = minor_radius * c + major_radius
+                z = minor_radius * sin(b)
+
+                glNormal3f(*n(x0 * c, y0 * c, z / minor_radius))
+                glVertex3f(x0 * r, y0 * r, z)
+
+                glNormal3f(*n(x1 * c, y1 * c, z / minor_radius))
+                glVertex3f(x1 * r, y1 * r, z)
+
+            glEnd()
+        glPopAttrib()

punyverse/model.py

@@ -0,0 +1,288 @@
+from time import clock
+import os.path
+
+from pyglet.gl import *
+
+from punyverse.texture import load_texture
+
+FACE_TRIANGLES = 0
+FACE_QUADS = 1
+
+
+def model_list(model, sx=1, sy=1, sz=1, rotation=(0, 0, 0)):
+    for m, text in model.materials.iteritems():
+        if text.texture:
+            load_texture(os.path.join(model.root, text.texture))
+
+    display = glGenLists(1)
+
+    glNewList(display, GL_COMPILE)
+    glPushMatrix()
+    glPushAttrib(GL_CURRENT_BIT)
+
+    pitch, yaw, roll = rotation
+    glPushAttrib(GL_TRANSFORM_BIT)
+    glRotatef(pitch, 1, 0, 0)
+    glRotatef(yaw, 0, 1, 0)
+    glRotatef(roll, 0, 0, 1)
+    glPopAttrib()
+
+    vertices = model.vertices
+    textures = model.textures
+    normals = model.normals
+
+    for g in model.groups:
+        material = g.material
+
+        tex_id = load_texture(os.path.join(model.root, material.texture)) if (material and material.texture) else 0
+
+        if tex_id:
+            glEnable(GL_TEXTURE_2D)
+            glBindTexture(GL_TEXTURE_2D, tex_id)
+        else:
+            glBindTexture(GL_TEXTURE_2D, 0)
+            glDisable(GL_TEXTURE_2D)
+
+        if material:
+            fv4 = GLfloat * 4
+
+            if material.Ka:
+                kx, ky, kz = material.Ka
+                glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, fv4(kx, ky, kz, 1))
+            if material.Kd:
+                kx, ky, kz = material.Kd
+                glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, fv4(kx, ky, kz, 1))
+            if material.Ks:
+                kx, ky, kz = material.Ks
+                glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, fv4(kx, ky, kz, 1))
+            glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, material.shininess)
+
+        type = -1
+
+        def point(f, vertices, normals, textures, n):
+            if f.norms:
+                glNormal3f(*normals[f.norms[n]])
+            if tex_id:
+                glTexCoord2f(*textures[f.texs[n]])
+
+            x, y, z = vertices[f.verts[n]]
+            glVertex3f(x * sx, y * sy, z * sz)
+
+        for f in g.faces:
+            if type != f.type:
+                if type != -1:
+                    glEnd()
+                glBegin(GL_TRIANGLES)
+            type = f.type
+
+            point(f, vertices, normals, textures, 0)
+            point(f, vertices, normals, textures, 1)
+            point(f, vertices, normals, textures, 2)
+
+            if type == FACE_QUADS:
+                point(f, vertices, normals, textures, 2)
+                point(f, vertices, normals, textures, 3)
+                point(f, vertices, normals, textures, 0)
+    glEnd()
+
+    glPopAttrib()
+    glPopMatrix()
+
+    glEndList()
+    return display
+
+def load_model(path):
+    path = os.path.join(os.path.dirname(__file__), "assets", "models", path)
+    root = os.path.dirname(path)
+
+    vertices = []
+    normals = []
+    textures = []
+    groups = []
+    materials = {}
+
+    # Allez au diable, Python
+    current_group = [None]
+    current_material = [None]
+
+    def dispatch(p, commands):
+        with open(p, 'r') as file:
+            for line in file:
+                line = line.strip()
+                if not line or line[0] == '#':
+                    continue # Empty or comment
+                words = line.split()
+                type = words[0]
+                if type in commands:
+                    commands[type](words)
+
+    def newmtl(words):
+        material = Material(words[1])
+        materials[words[1]] = material
+        current_material[0] = material
+
+    def Ka(words):
+        current_material[0].Ka = (float(words[1]), float(words[2]), float(words[3]))
+
+    def Kd(words):
+        current_material[0].Kd = (float(words[1]), float(words[2]), float(words[3]))
+
+    def Ks(words):
+        current_material[0].Ks = (float(words[1]), float(words[2]), float(words[3]))
+
+    def Ns(words):
+        current_material[0].shininess = min(float(words[1]), 125) # Seems to sometimes be > 125. TODO: find out why
+
+    def map_Kd(words):
+        current_material[0].texture = words[-1]
+
+    def v(words):
+        vertices.append((float(words[1]), float(words[2]), float(words[3])))
+
+    def vn(words):
+        normals.append((float(words[1]), float(words[2]), float(words[3])))
+
+    def vt(words):
+        l = len(words)
+        x, y, z = 0, 0, 0
+        if l >= 2:
+            x = float(words[1])
+        if l >= 3:
+            # OBJ origin is at upper left, OpenGL origin is at lower left
+            y = 1 - float(words[2])
+        if l >= 4:
+            z = float(words[3])
+        textures.append((x, y, z))
+
+    def f(words):
+        l = len(words)
+        type = -1
+        face_vertices = []
+        face_normals = []
+        face_textures = []
+
+        vertex_count = l - 1
+        if vertex_count == 3:
+            type = FACE_TRIANGLES
+        else:
+            type = FACE_QUADS
+
+        raw_faces = []
+        current_value = -1
+        vindices = []
+        nindices = []
+        tindices = []
+
+        for i in xrange(1, vertex_count + 1):
+            raw_faces = words[i].split('/')
+            l = len(raw_faces)
+
+            current_value = int(raw_faces[0])
+
+            vindices.append(current_value - 1)
+            face_vertices.append(vertices[current_value - 1])
+
+            if l == 1:
+                continue
+
+            if l >= 2 and raw_faces[1]:
+                current_value = int(raw_faces[1])
+                if current_value <= len(textures):
+                    tindices.append(current_value - 1)
+                    face_textures.append(textures[current_value - 1])
+            if l >= 3 and raw_faces[2]:
+                current_value = int(raw_faces[2])
+                nindices.append(current_value - 1)
+                face_normals.append(normals[current_value - 1])
+
+        if not groups:
+            group = Group()
+            groups.append(group)
+        else:
+            group = groups[-1]
+        group.vertices += face_vertices
+        group.normals += face_normals
+        group.textures += face_textures
+
+        idx_count = group.idx_count
+        group.indices += (idx_count + 1, idx_count + 2, idx_count + 3)
+        group.idx_count += 3
+
+        group.faces.append(Face(type, vindices, nindices, tindices, face_vertices, face_normals, face_textures))
+
+    mtllib = lambda words: dispatch(os.path.join(root, words[1]), obj)
+
+    def usemtl(words):
+        mat = words[1]
+        if mat in materials:
+            groups[-1].material = materials[mat]
+        else:
+            print "Warning: material %s undefined." % mat
+
+    g = lambda words: groups.append(Group(words[1]))
+
+    obj = {
+        'v': v,
+        'vn': vn,
+        'vt': vt,
+        'f': f,
+        'mtllib': mtllib,
+        'usemtl': usemtl,
+        'g': g,
+        'o': g, # TODO: o is not really g
+        'newmtl': newmtl,
+        'Ka': Ka,
+        'Kd': Kd,
+        'Ks': Ks,
+        'Ns': Ns,
+        'map_Kd': map_Kd
+    }
+
+    dispatch(path, obj)
+
+    return WavefrontObject(root, vertices, normals, textures, groups, materials)
+
+
+class WavefrontObject(object):
+    def __init__(self, root, vertices=None, normals=None, textures=None, groups=None, materials=None):
+        self.root = root
+        self.vertices = vertices or []
+        self.normals = normals or []
+        self.textures = textures or []
+        self.groups = groups or []
+        self.materials = materials or []
+
+
+class Group(object):
+    def __init__(self, name=None):
+        if not name:
+            name = clock()
+        self.name = name
+        self.material = None
+        self.faces = []
+        self.indices = []
+        self.vertices = []
+        self.normals = []
+        self.textures = []
+        self.idx_count = 0
+
+
+class Face(object):
+    def __init__(self, type, verts, norms, texs, vertices, normals, textures):
+        self.type = type
+        self.verts = verts
+        self.norms = norms
+        self.texs = texs
+        self.vertices = vertices
+        self.normals = normals
+        self.textures = textures
+
+
+class Material(object):
+    def __init__(self, name, texture=None, Ka=0, Kd=0, Ks=0, shininess=0.0):
+        self.name = name
+        self.texture = texture
+        self.Ka = Ka
+        self.Kd = Kd
+        self.Ks = Ks
+        self.shininess = shininess

punyverse/model.pyx

@@ -0,0 +1,305 @@
+from time import clock
+import os.path
+
+include "_cyopengl.pxi"
+
+from space_torus.texture import load_texture
+
+cdef enum:
+    FACE_TRIANGLES
+    FACE_QUADS
+
+cdef inline point(Face f, list vertices, list normals, list textures, float sx, float sy, float sz, int n, int tex_id):
+    if f.norms:
+        normal = normals[f.norms[n]]
+        glNormal3f(normal[0], normal[1], normal[2])
+    if tex_id:
+        tex = textures[f.texs[n]]
+        glTexCoord2f(tex[0], tex[1])
+
+    x, y, z = vertices[f.verts[n]]
+    glVertex3f(x * sx, y * sy, z * sz)
+
+cpdef model_list(WavefrontObject model, float sx=1, float sy=1, float sz=1, object rotation=(0, 0, 0)):
+    for m, text in model.materials.iteritems():
+        if text.texture:
+            load_texture(os.path.join(model.root, text.texture))
+
+    display = glGenLists(1)
+
+    glNewList(display, GL_COMPILE)
+    glPushMatrix()
+    glPushAttrib(GL_CURRENT_BIT)
+
+    cdef float pitch, yaw, roll
+    cdef kx, ky, kz
+
+    pitch, yaw, roll = rotation
+    glPushAttrib(GL_TRANSFORM_BIT)
+    glRotatef(pitch, 1, 0, 0)
+    glRotatef(yaw, 0, 1, 0)
+    glRotatef(roll, 0, 0, 1)
+    glPopAttrib()
+
+    vertices = model.vertices
+    textures = model.textures
+    normals = model.normals
+
+    for g in model.groups:
+        material = g.material
+
+        tex_id = load_texture(os.path.join(model.root, material.texture)) if (material and material.texture) else 0
+
+        if tex_id:
+            glEnable(GL_TEXTURE_2D)
+            glBindTexture(GL_TEXTURE_2D, tex_id)
+        else:
+            glBindTexture(GL_TEXTURE_2D, 0)
+            glDisable(GL_TEXTURE_2D)
+
+        if material:
+            if material.Ka:
+                kx, ky, kz = material.Ka
+                glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, [kx, ky, kz, 1])
+            if material.Kd:
+                kx, ky, kz = material.Kd
+                glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, [kx, ky, kz, 1])
+            if material.Ks:
+                kx, ky, kz = material.Ks
+                glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, [kx, ky, kz, 1])
+            glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, material.shininess)
+
+        type = -1
+
+        for f in g.faces:
+            if type != f.type:
+                if type != -1:
+                    glEnd()
+                glBegin(GL_TRIANGLES)
+            type = f.type
+
+            point(f, vertices, normals, textures, sx, sy, sz, 0, tex_id)
+            point(f, vertices, normals, textures, sx, sy, sz, 1, tex_id)
+            point(f, vertices, normals, textures, sx, sy, sz, 2, tex_id)
+
+            if type == FACE_QUADS:
+                point(f, vertices, normals, textures, sx, sy, sz, 2, tex_id)
+                point(f, vertices, normals, textures, sx, sy, sz, 3, tex_id)
+                point(f, vertices, normals, textures, sx, sy, sz, 0, tex_id)
+    glEnd()
+
+    glPopAttrib()
+    glPopMatrix()
+
+    glEndList()
+    return display
+
+def load_model(path):
+    print "Loading model %s..." % path
+    return WavefrontObject(os.path.join(os.path.dirname(__file__), 'assets', 'models', path))
+
+cdef class WavefrontObject(object):
+    cdef public str root
+    cdef public list vertices, normals, textures, groups
+    cdef public dict materials
+    cdef Material current_material
+
+    cdef inline dispatch(self, str p):
+        with open(p, 'r') as file:
+            for line in file:
+                line = line.strip()
+                if not line or line[0] == '#':
+                    continue # Empty or comment
+                words = line.split()
+                type = words[0]
+                if type == 'v':
+                    self.v(words)
+                elif type == 'vn':
+                    self.vn(words)
+                elif type == 'vt':
+                    self.vt(words)
+                elif type == 'f':
+                    self.f(words)
+                elif type == 'mtllib':
+                    self.mtllib(words)
+                elif type == 'usemtl':
+                    self.usemtl(words)
+                elif type == 'g' or type == 'o':
+                    self.g(words)
+                elif type == 'newmtl':
+                    self.newmtl(words)
+                elif type == 'Ka':
+                    self.Ka(words)
+                elif type == 'Kd':
+                    self.Kd(words)
+                elif type == 'Ks':
+                    self.Ks(words)
+                elif type == 'Ns':
+                    self.Ns(words)
+                elif type == 'map_Kd':
+                    self.map_Kd(words)
+
+    cdef inline newmtl(self, list words):
+        material = Material(words[1])
+        self.materials[words[1]] = material
+        self.current_material = material
+
+    cdef inline Ka(self, list words):
+        self.current_material.Ka = (float(words[1]), float(words[2]), float(words[3]))
+
+    cdef inline Kd(self, list words):
+        self.current_material.Kd = (float(words[1]), float(words[2]), float(words[3]))
+
+    cdef inline Ks(self, list words):
+        self.current_material.Ks = (float(words[1]), float(words[2]), float(words[3]))
+
+    cdef inline Ns(self, list words):
+        self.current_material.shininess = min(float(words[1]), 125) # Seems to sometimes be > 125. TODO: find out why
+
+    cdef inline map_Kd(self, list words):
+        self.current_material.texture = words[-1]
+
+    cdef inline v(self, list words):
+        self.vertices.append((float(words[1]), float(words[2]), float(words[3])))
+
+    cdef inline vn(self, list words):
+        self.normals.append((float(words[1]), float(words[2]), float(words[3])))
+
+    cdef inline vt(self, list words):
+        l = len(words)
+        x, y, z = 0, 0, 0
+        if l >= 2:
+            x = float(words[1])
+        if l >= 3:
+            # OBJ origin is at upper left, OpenGL origin is at lower left
+            y = 1 - float(words[2])
+        if l >= 4:
+            z = float(words[3])
+        self.textures.append((x, y, z))
+
+    cdef inline f(self, list words):
+        l = len(words)
+        type = -1
+        cdef list face_vertices, face_normals, face_textures, raw_faces, vindices, nindices, tindicies
+        cdef int current_value
+
+        face_vertices = []
+        face_normals = []
+        face_textures = []
+
+        vertex_count = l - 1
+        if vertex_count == 3:
+            type = FACE_TRIANGLES
+        else:
+            type = FACE_QUADS
+
+        raw_faces = []
+        current_value = -1
+        vindices = []
+        nindices = []
+        tindices = []
+
+        for i in xrange(1, vertex_count + 1):
+            raw_faces = words[i].split('/')
+            l = len(raw_faces)
+
+            current_value = int(raw_faces[0])
+
+            vindices.append(current_value - 1)
+            face_vertices.append(self.vertices[current_value - 1])
+
+            if l == 1:
+                continue
+
+            if l >= 2 and raw_faces[1]:
+                current_value = int(raw_faces[1])
+                if current_value <= len(self.textures):
+                    tindices.append(current_value - 1)
+                    face_textures.append(self.textures[current_value - 1])
+            if l >= 3 and raw_faces[2]:
+                current_value = int(raw_faces[2])
+                nindices.append(current_value - 1)
+                face_normals.append(self.normals[current_value - 1])
+
+        if not self.groups:
+            group = Group()
+            self.groups.append(group)
+        else:
+            group = self.groups[-1]
+        group.vertices += face_vertices
+        group.normals += face_normals
+        group.textures += face_textures
+
+        idx_count = group.idx_count
+        group.indices += (idx_count + 1, idx_count + 2, idx_count + 3)
+        group.idx_count += 3
+
+        group.faces.append(Face(type, vindices, nindices, tindices, face_vertices, face_normals, face_textures))
+
+    cdef inline mtllib(self, list words):
+        self.dispatch(os.path.join(self.root, words[1]))
+
+    cdef inline usemtl(self, list words):
+        mat = words[1]
+        if mat in self.materials:
+            self.groups[-1].material = self.materials[mat]
+        else:
+            print "Warning: material %s undefined." % mat
+
+    cdef inline g(self, list words):
+        self.groups.append(Group(words[1]))
+
+    def __init__(self, str path):
+        self.root = os.path.dirname(path)
+        self.vertices = []
+        self.normals = []
+        self.textures = []
+        self.groups = []
+        self.materials = {}
+        self.dispatch(path)
+
+cdef class Group(object):
+    cdef public str name
+    cdef public tuple min
+    cdef public Material material
+    cdef public list faces, indices, vertices, normals, textures
+    cdef public int idx_count
+
+    def __init__(self, str name=None):
+        if not name:
+            name = clock()
+        self.name = name
+        self.material = None
+        self.faces = []
+        self.indices = []
+        self.vertices = []
+        self.normals = []
+        self.textures = []
+        self.idx_count = 0
+
+cdef class Face(object):
+    cdef public int type
+    cdef public list verts, norms, texs, vertices, normals, textures
+
+    def __init__(self, int type, list verts, list norms, list texs, list vertices, list normals, list textures):
+        self.type = type
+        self.verts = verts
+        self.norms = norms
+        self.texs = texs
+        self.vertices = vertices
+        self.normals = normals
+        self.textures = textures
+
+cdef class Material(object):
+    cdef public str name, texture
+    cdef public tuple Ka, Kd, Ks
+    cdef public double shininess
+
+    def __init__(self, str name, str texture=None, tuple Ka=(0, 0, 0), tuple Kd=(0, 0, 0), tuple Ks=(0, 0, 0),
+                 double shininess=0.0):
+        self.name = name
+        self.texture = texture
+        self.Ka = Ka
+        self.Kd = Kd
+        self.Ks = Ks
+        self.shininess = shininess

punyverse/texture.py

@@ -0,0 +1,220 @@
+from pyglet import image
+from pyglet.gl import *
+from ctypes import c_int, byref, c_ulong
+import os.path
+import struct
+
+try:
+    from _glgeom import bgr_to_rgb
+except ImportError:
+    import warnings
+    warnings.warn('Compile _glgeom.c, or double the start up time.')
+    
+    # Use magick when _glgeom is not compiled (is actually slower)
+    try:
+        from pgmagick import Blob, Image
+    except ImportError:
+        magick = False
+    else:
+        magick = True
+
+
+    def bgr_to_rgb(source, width, height, alpha=False, bottom_up=True):
+        length = len(source)
+        depth = length / (width * height)
+        depth2 = depth - alpha
+        result = bytearray(length)
+        row = width * depth
+        for y in xrange(height):
+            for x in xrange(width):
+                ioffset = y * width * depth + x * depth
+                ooffset = (height - y - 1 if bottom_up else y) * row + x * depth
+                for i in xrange(depth2):
+                    result[ooffset+i] = source[ioffset+depth2-i-1]
+                if alpha:
+                    result[ooffset+depth2] = source[ioffset+depth2]
+        return str(result)
+else:
+    magick = False
+
+try:
+    from cStringIO import StringIO
+except ImportError:
+    from StringIO import StringIO
+
+__all__ = ['load_texture']
+
+id = 0
+cache = {}
+
+max_texture = None
+power_of_two = None
+badcard = False
+bgra = False
+
+
+def init():
+    global max_texture, power_of_two, badcard, bgra, magick
+
+    if max_texture is None:
+        buf = c_int()
+        glGetIntegerv(GL_MAX_TEXTURE_SIZE, byref(buf))
+        max_texture = buf.value
+        badcard = gl_info.get_renderer() in ('GDI Generic',)
+        if badcard:
+            import warnings
+            warnings.warn('Please update your graphics drivers if possible')
+        #extensions = gl_info.get_extensions()
+        #bgra = 'GL_EXT_bgra' in extensions
+        #if bgra and magick:
+        #    magick = False # Disable magick because BGRA needs it not
+
+    if power_of_two is None:
+        power_of_two = gl_info.have_version(2) or gl_info.have_extension('GL_ARB_texture_non_power_of_two')
+
+is_power2 = lambda num: num != 0 and ((num & (num - 1)) == 0)
+
+
+def image_info(data):
+    data = str(data)
+    size = len(data)
+    height = -1
+    width = -1
+    content_type = ''
+
+    # handle GIFs
+    if (size >= 10) and data[:6] in ('GIF87a', 'GIF89a'):
+        # Check to see if content_type is correct
+        content_type = 'image/gif'
+        w, h = struct.unpack("<HH", data[6:10])
+        width = int(w)
+        height = int(h)
+
+    # See PNG 2. Edition spec (http://www.w3.org/TR/PNG/)
+    # Bytes 0-7 are below, 4-byte chunk length, then 'IHDR'
+    # and finally the 4-byte width, height
+    elif ((size >= 24) and data.startswith('\211PNG\r\n\032\n')
+          and (data[12:16] == 'IHDR')):
+        content_type = 'image/png'
+        w, h = struct.unpack(">LL", data[16:24])
+        width = int(w)
+        height = int(h)
+
+    # Maybe this is for an older PNG version.
+    elif (size >= 16) and data.startswith('\211PNG\r\n\032\n'):
+        # Check to see if we have the right content type
+        content_type = 'image/png'
+        w, h = struct.unpack(">LL", data[8:16])
+        width = int(w)
+        height = int(h)
+
+    # handle JPEGs
+    elif (size >= 2) and data.startswith('\377\330'):
+        content_type = 'image/jpeg'
+        jpeg = StringIO(data)
+        jpeg.read(2)
+        b = jpeg.read(1)
+        try:
+            while b and ord(b) != 0xDA:
+                while ord(b) != 0xFF:
+                    b = jpeg.read(1)
+                while ord(b) == 0xFF:
+                    b = jpeg.read(1)
+                if 0xC0 <= ord(b) <= 0xC3:
+                    jpeg.read(3)
+                    h, w = struct.unpack(">HH", jpeg.read(4))
+                    break
+                else:
+                    jpeg.read(int(struct.unpack(">H", jpeg.read(2))[0])-2)
+                b = jpeg.read(1)
+            width = int(w)
+            height = int(h)
+        except struct.error:
+            pass
+        except ValueError:
+            pass
+
+    return content_type, width, height
+
+
+def check_size(width, height):
+    init()
+    if width > max_texture or height > max_texture:
+        print 'too large'
+        raise ValueError('Texture too large')
+    elif not power_of_two:
+        if not is_power2(width) or not is_power2(height):
+            print 'not power of two'
+            raise ValueError('Texture not power of two')
+
+
+def load_texture(file):
+    if file in cache:
+        return cache[file]
+    print "Loading image %s..." % file,
+
+    path = os.path.join(os.path.dirname(__file__), "assets", "textures", file)
+
+    try:
+        file = open(path, 'rb')
+    except IOError:
+        print 'exists not'
+        raise ValueError('Texture exists not')
+    type, width, height = image_info(file.read(8192))
+    file.seek(0, 0)
+    if type:
+        check_size(width, height)
+
+    if magick:
+        file.close()
+        file = Image(path.encode('mbcs' if os.name == 'nt' else 'utf8'))
+        geo = file.size()
+        check_size(geo.width(), geo.height())
+        print
+        blob = Blob()
+        file.flip()
+        file.write(blob, 'RGBA')
+        texture = blob.data
+        mode = GL_RGBA
+    else:
+        try:
+            raw = image.load(path, file=file)
+        except IOError:
+            print 'exists not'
+            raise ValueError('Texture exists not')
+
+        width, height = raw.width, raw.height
+        check_size(width, height)
+        print
+
+        mode = GL_RGBA if 'A' in raw.format else GL_RGB
+        mode2 = mode
+        # Flip from BGR to RGB
+        # I hate you too, Pyglet...
+        # REGULAR EXPRESSIONS ARE NOT MEANT TO PARSE BINARY DATA!!!
+        #texture = raw.get_data('RGBA', width * 4) if safe else raw.data[::-1] if 'BGR' in raw.format else raw.data
+        if raw.format in ('BGR', 'BGRA'):
+            if bgra:
+                mode2 = {GL_RGBA: GL_BGRA, GL_RGB: GL_BGR}[mode]
+                texture = raw.data
+            else:
+                texture = bgr_to_rgb(raw.data, width, height, 'A' in raw.format)
+        elif raw.format in ('RGB', 'RGBA'):
+            texture = raw.data
+        else:
+            texture = raw.get_data('RGBA', width * 4)
+
+    buffer = c_ulong()
+    glGenTextures(1, byref(buffer))
+    id = buffer.value
+
+    glBindTexture(GL_TEXTURE_2D, id)
+
+    filter = GL_NEAREST if badcard else GL_LINEAR
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter)
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter)
+    glTexImage2D(GL_TEXTURE_2D, 0, mode, width, height, 0, mode2, GL_UNSIGNED_BYTE, texture)
+
+    cache[file] = id
+
+    return id

punyverse/widgets.py

@@ -0,0 +1,33 @@
+from pyglet.gl import *
+
+VERTICAL = 0
+HORIZONTAL = 1
+
+
+def _progress_bar_vertices(x, y, w, h):
+    glColor3f(1, 1, 1)
+    glVertex2f(x, y)
+    glVertex2f(x + w, y)
+
+    glColor3f(0, 0, 1)
+    glVertex2f(x + w, y + h)
+    glVertex2f(x, y + h)
+
+
+def progress_bar(x, y, width, height, progress, min=0, max=100, type=HORIZONTAL):
+    glPushAttrib(GL_CURRENT_BIT | GL_LINE_BIT)
+
+    glLineWidth(1)
+    glBegin(GL_LINE_LOOP)
+    if type == VERTICAL:
+        _progress_bar_vertices(x, y, width, height * max)
+    else:
+        _progress_bar_vertices(x, y, width * max, height)
+    glEnd()
+    glBegin(GL_QUADS)
+    if type == VERTICAL:
+        _progress_bar_vertices(x, y, width, height * progress)
+    else:
+        _progress_bar_vertices(x, y, width * max, height)
+    glEnd()
+    glPopAttrib()

punyverse/world.json

@@ -0,0 +1,94 @@
+{
+  "planets": {
+    "earth": {
+      "texture": ["earth.jpg", "earth_medium.jpg", "earth_small.jpg", [0, 0.28, 1, 1]],
+      "radius": 100,
+      "z": "2 * AU",
+      "pitch": -90,
+      "yaw": 23.4,
+      "roll": -90,
+      "atmosphere": {
+        "cloud_texture": "cloudmap.png",
+        "diffuse_texture": "atmosphere_earth.png",
+        "diffuse_size": 30
+      },
+      "satellites": {
+        "moon": {
+          "texture": ["moon.jpg", "moon_medium.jpg", "moon_small.jpg", [0.53, 0.53, 0.53, 1]],
+          "radius": 25,
+          "distance": 200,
+          "pitch": -90,
+          "yaw": 6.68
+        },
+        "iss": {
+          "model": "satellites/iss.obj",
+          "distance": 110,
+          "scale": 10
+        }
+      }
+    },
+    "mars": {
+      "texture": ["mars.jpg", "mars_small.jpg", "mars_medium.jpg", [0.85, 0.47, 0.2, 1]],
+      "radius": 80,
+      "z": "4 * AU",
+      "pitch": -90,
+      "yaw": 25.19
+    },
+    "jupiter": {
+      "texture": ["jupiter.jpg", "jupiter_medium.jpg", "jupiter_small.jpg", [0.65, 0.36, 0.19, 1]],
+      "radius": 150,
+      "z": "6 * AU",
+      "pitch": -90,
+      "yaw": 3.13
+    },
+    "saturn": {
+      "texture": ["saturn.jpg", "saturn_medium.jpg", "saturn_small.jpg", [0.9, 0.8, 0.64, 1]],
+      "radius": 140,
+      "z": "8 * AU",
+      "pitch": -90,
+      "yaw": 26.73,
+      "ring": {
+        "texture": "ring_saturn.png",
+        "distance": 200,
+        "size": 150
+      }
+    },
+    "uranus": {
+      "texture": ["uranus.jpg", [0, 0.53, 0.84, 1]],
+      "radius": 130,
+      "z": "10 * AU",
+      "pitch": -90,
+      "yaw": 97.77,
+      "ring": {
+        "texture": "ring_uranus.png",
+        "pitch": 0,
+        "yaw": 0,
+        "roll": 90,
+        "distance": 200,
+        "size": 100
+      }
+    },
+    "neptune": {
+      "texture": ["neptune.jpg", [0.31, 0.49, 0.59, 1]],
+      "radius": 120,
+      "z": "12 * AU",
+      "pitch": -90,
+      "yaw": 28.32
+    },
+    "sky": {
+      "texture": "sky.jpg",
+      "optional": true,
+      "lighting": false,
+      "radius": 190000,
+      "pitch": 90,
+      "yaw": 30,
+      "roll": 180,
+      "delta": 0,
+      "background": true
+    }
+  },
+  "start": {
+    "z": "2 * AU - 400",
+    "yaw": 180
+  }
+}

punyverse/world.py

@@ -0,0 +1,165 @@
+from bisect import bisect_left
+from collections import OrderedDict
+from operator import itemgetter
+from functools import partial
+import hashlib
+import os.path
+import random
+
+try:
+    import json
+except ImportError:
+    try:
+        import simplejson as json
+    except ImportError:
+        print "No compatible JSON decoder found. Translation: you're fucked."
+
+try:
+    from _model import model_list, load_model
+except ImportError:
+    from model import model_list, load_model
+
+from punyverse.glgeom import *
+from punyverse.entity import *
+from punyverse.texture import *
+
+AU = 2000
+
+
+def get_best_texture(info, optional=False):
+    cheap = False
+    skip = False
+    texture = None
+    if isinstance(info, list):
+        for item in info:
+            if isinstance(item, list):
+                if len(item) == 4:
+                    cheap = True
+                    texture = item
+                    break
+                continue
+            try:
+                texture = load_texture(item)
+            except ValueError:
+                pass
+            else:
+                break
+    else:
+        try:
+            texture = load_texture(info)
+        except ValueError:
+            if optional:
+                skip = True
+            else:
+                cheap = True
+                texture = [1, 1, 1, 1]
+    return cheap, skip, texture
+
+
+def load_world(file):
+    with open(os.path.join(os.path.dirname(__file__), file)) as f:
+        root = json.load(f, object_pairs_hook=OrderedDict)
+
+        world = World()
+        e = lambda x: eval(str(x), {'__builtins__': None}, {'AU': AU})
+
+        if 'start' in root:
+            info = root['start']
+            x = e(info.get('x', 0))
+            y = e(info.get('y', 0))
+            z = e(info.get('z', 0))
+            pitch = e(info.get('pitch', 0))
+            yaw = e(info.get('yaw', 0))
+            roll = e(info.get('roll', 0))
+            world.start = (x, y, z)
+            world.direction = (pitch, yaw, roll)
+
+        def body(name, info, parent=None):
+            lighting = info.get('lighting', True)
+            x = e(info.get('x', 0))
+            y = e(info.get('y', 0))
+            z = e(info.get('z', 0))
+            pitch = e(info.get('pitch', 0))
+            yaw = e(info.get('yaw', 0))
+            roll = e(info.get('roll', 0))
+            delta = e(info.get('delta', 5))
+            radius = e(info.get('radius', None))
+            background = info.get('background', False)
+
+            if 'texture' in info:
+                cheap, skip, texture = get_best_texture(info['texture'], optional=info.get('optional', False))
+                if skip:
+                    return
+                if cheap:
+                    object_id = compile(colourball, radius, int(radius / 2), int(radius / 2), texture)
+                else:
+                    object_id = compile(sphere, radius, int(radius / 2), int(radius / 2), texture, lighting=lighting)
+            elif 'model' in info:
+                scale = info.get('scale', 10)
+                object_id = model_list(load_model(info['model']), info.get('sx', scale), info.get('sy', scale),
+                                       info.get('sz', scale), (0, 0, 0))
+            else:
+                print 'Nothing to load for %s.' % name
+
+            if parent is None:
+                type = Planet
+            else:
+                x, y, z = parent.location
+                distance = e(info.get('distance', 100))
+                x -= distance
+                type = partial(Satellite, parent=parent, distance=distance, inclination=e(info.get('inclination', 0)),
+                               orbit_speed=e(info.get('orbit_speed', 1)))
+
+            atmosphere_id = 0
+            cloudmap_id = 0
+            if 'atmosphere' in info:
+                atmosphere_data = info['atmosphere']
+                size = e(atmosphere_data.get('diffuse_size', None))
+                atm_texture = atmosphere_data.get('diffuse_texture', None)
+                cloud_texture = atmosphere_data.get('cloud_texture', None)
+                cheap, _, cloud_texture = get_best_texture(cloud_texture)
+                if not cheap:
+                    cloudmap_id = compile(sphere, radius + 2, int(radius / 2), int(radius / 2), cloud_texture,
+                                          lighting=False)
+                cheap, _, atm_texture = get_best_texture(atm_texture)
+                if not cheap:
+                    atmosphere_id = compile(disk, radius, radius + size, 30, atm_texture)
+
+            object = type(object_id, (x, y, z), (pitch, yaw, roll), delta=delta,
+                          atmosphere=atmosphere_id, cloudmap=cloudmap_id, background=background)
+            world.tracker.append(object)
+
+            if 'ring' in info:
+                ring_data = info['ring']
+                texture = ring_data.get('texture', None)
+                distance = e(ring_data.get('distance', radius * 1.2))
+                size = e(ring_data.get('size', radius / 2))
+                pitch = e(ring_data.get('pitch', pitch))
+                yaw = e(ring_data.get('yaw', yaw))
+                roll = e(ring_data.get('roll', roll))
+
+                cheap, _, texture = get_best_texture(texture)
+                if not cheap:
+                    world.tracker.append(
+                        type(compile(disk, distance, distance + size, 30, texture), (x, y, z),
+                             (pitch, yaw, roll)))
+
+            for satellite, info in info.get('satellites', {}).iteritems():
+                print "Loading %s, satellite of %s." % (satellite, name)
+                body(satellite, info, object)
+
+        for planet, info in root['planets'].iteritems():
+            print "Loading %s." % planet
+            body(planet, info)
+
+        return world
+
+
+class World(object):
+    def __init__(self):
+        self.tracker = []
+        self.start = (0, 0, 0)
+        self.direction = (0, 0, 0)
+        self.x = None
+        self.y = None
+        self.z = None