speepy3d 0.8.0

A tiny Python 3D windowing wrapper powered by a C++ OpenGL backend.

speepy3d

speepy3d is a tiny Python 3D/game library with a C++ OpenGL backend.

The backend is currently Windows-only through Win32/WGL. Version 0.3.0 adds a real shader/VBO renderer while keeping the old fixed-pipeline helpers for debug grid/axes.

Features

• Native OpenGL window creation.
• Keyboard and mouse state: is_key_down, is_mouse_down, mouse_delta.
• Cursor helpers: set_cursor_locked, set_cursor_visible.
• Timing: delta_time, fps, fpsbar=True, optional set_vsync.
• Resize and close callbacks.
• Input bindings: Input.action(), Input.axis(), Input.vec2(), mouse sensitivity and click-to-lock mouse.
• Game layer helpers: GameApp, AssetManager, Timer, Profiler, controllers and particles.
• Modern OpenGL basics: Shader, Material, Mesh, Texture, Renderer.
• MeshBatch for building many cubes into one fast mesh.
• Built-in Shader.basic(), Mesh.cube(), Mesh.plane(), Texture.checkerboard().
• Mesh normals and basic ambient + directional lighting.
• Simple OBJ loader: Mesh.from_obj("model.obj").
• Simple glTF loader: Mesh.from_gltf("model.gltf").
• Texture loading for .png, .jpg, .jpeg, .bmp and .ppm.
• Math: Vec2, Vec3, Mat4.
• Scene objects: Camera3D, Transform, Model, Scene, DirectionalLight.
• Collision helpers: AABB, PhysicsBody, PhysicsWorld, move_and_collide, SphereCollider, Ray, raycast_aabb.
• Debug drawing: DebugDraw.line(), DebugDraw.box(), DebugDraw.ray().
• WAV sound helpers on Windows: Sound, Music.
• Immediate UI: Label, Button, Panel, Menu, ContextMenu, UIManager.
• Tiny game loop helper: run(window, update, render).

Install

python -m pip install -e .

Modern Renderer Example

from speepy3d import Camera3D, DirectionalLight, Input, Model, Renderer, Scene, Texture, Vec3, Window

win = Window(800, 600, "speepy3d", fpsbar=True)
win.enable_depth_test(True)

camera = Camera3D(position=Vec3(0.0, 2.0, 6.0), pitch=-15.0)
renderer = Renderer(win)
controls = Input(win, mouse_sensitivity=0.08, mouse_locked_by_click=True)
controls.action("jump", "SPACE")
controls.axis("move_x", negative="A", positive="D")
controls.axis("move_z", negative="S", positive="W")

scene = Scene(
    camera=camera,
    ambient_light=Vec3(0.36, 0.40, 0.48),
    directional_light=DirectionalLight(direction=Vec3(-0.35, -1.0, -0.45), intensity=1.1),
)
cube = scene.add(Model.cube(1.5, texture=Texture.checkerboard()))
scene.add(Model.grid(10.0, 1.0))
scene.add(Model.axes(2.0))

while not win.should_close():
    win.poll_events()
    controls.update()

    dt = win.delta_time or 1.0 / 60.0
    raw_move = controls.vec2("move")
    move = camera.right * raw_move.x + camera.forward * raw_move.y
    if move.length > 0.0:
        camera.position += move.normalized() * camera.move_speed * dt

    controls.apply_look(camera)

    cube.transform.rotation.y += 60.0 * dt
    renderer.render(scene)
    win.swap_buffers()

Game Examples

python examples\snake3d.py
python examples\minicraft3d.py
python examples\platformer3d.py

Input

from speepy3d import Input

controls = Input(win, mouse_sensitivity=0.06, mouse_locked_by_click=True)
controls.action("jump", "SPACE")
controls.axis("move_x", negative="A", positive="D")
controls.axis("move_z", negative="S", positive="W")

while not win.should_close():
    win.poll_events()
    controls.update()

    if controls.action("jump"):
        jump()

    move = controls.vec2("move")

Game Layer

from speepy3d import GameApp, MeshBatch, PhysicsBody, PlatformerController, Vec3

app = GameApp(1280, 720, "short game")
app.set_camera((0, 3, 10), pitch=-15)

app.input.action("jump", "SPACE")
app.input.axis("move_x", negative="A", positive="D")

material = app.assets.material("grass", color=Vec3(0.25, 0.85, 0.35))
cube = app.assets.cube()
player = app.scene.spawn(cube, position=(0, 2, 0), material=material, name="player", tag="actor")

world = MeshBatch()
world.cube((0, 0, 0), size=(12, 1, 4), color=(0.3, 0.8, 0.35))
app.scene.add(world.build_model(material))

body = PhysicsBody.from_values(player.position, (1, 1, 1))
app.physics.static_box((0, 0, 0), (12, 1, 4))
controller = PlatformerController(body, app.input, app.physics)

@app.update
def update(dt):
    controller.update(dt)
    player.position = body.position
    app.debug.box(body.box)

@app.render
def render():
    app.draw_scene()
    app.ui.begin()
    app.ui.panel(20, 20, 220, 90)
    app.ui.label(f"FPS {app.fps:.0f}")
    app.profiler.draw(app.ui, 260, 20)
    app.ui.end()

app.run()

Useful systems:

app.timer.after(2.0, spawn_enemy)
app.timer.every(1.0, add_score)

app.particles.emit((0, 2, 0), count=24)

player = app.scene.find("player")
enemies = app.scene.find_by_tag("enemy")

Loading Assets

from speepy3d import Material, Mesh, Model, Shader, Texture, Vec3

mesh = Mesh.from_gltf("assets/crate.gltf")
material = Material(
    shader=Shader.basic(),
    texture=Texture.from_file("assets/crate.png"),
    color=Vec3(1.0, 1.0, 1.0),
    roughness=0.5,
)
model = Model(mesh, material=material)

Mesh.from_gltf() supports .gltf JSON files with triangle meshes and external or embedded buffers. .glb, skinning and animation are not implemented yet.

Collision

from speepy3d import AABB, Vec3, intersects

player = AABB.from_center_size(Vec3(0, 1, 0), Vec3(1, 2, 1))
wall = AABB.from_center_size(Vec3(2, 1, 0), Vec3(1, 2, 4))

if intersects(player, wall):
    print("hit")

UI

from speepy3d import Button, Label, Menu, MenuItem, UIManager

ui = UIManager()
ui.add(Label(20, 20, "SCORE 0"))
ui.add(Button(20, 55, 140, 36, text="START", on_click=start_game))
ui.add(Menu(20, 100, 120, 32, title="GAME", items=[
    MenuItem("RESET", reset_game),
    MenuItem("QUIT", win.close),
]))

while not win.should_close():
    win.poll_events()
    ui.update(win)
    render_3d()
    ui.draw(win)
    win.swap_buffers()

Immediate-mode UI:

ui = UIManager(win)

while not win.should_close():
    win.poll_events()
    render_3d()

    ui.begin()
    ui.panel(20, 20, 250, 180)
    ui.label("Score: 10")
    if ui.button("Restart"):
        restart()
    ui.end()

    win.swap_buffers()

Sound

from speepy3d import Sound

Sound("jump.wav").play()

Sound currently uses Python's Windows winsound, so WAV is the practical target.

Build

python setup.py sdist bdist_wheel