Bump engine submodule.

engine

@@ -1 +1 @@
-Subproject commit ae3333e22e36667a0c02817fafb16ab7b8d1341b
+Subproject commit beca8798bf91edba954d31eb4e1a619ec2140c83

game/batch.py

@@ -19,14 +19,15 @@ from engine import (vec3, mat3, buffer,
     INSTANCE_FLAG_SPAWNED, BATCH_MAX_SIZE, param_type, params_format, create_batch, draw_batch, destroy_batch)
 
 class Batch:
-    __slots__ = '_batch', 'size', 'max_size', 'flags', 'meshes', 'params', '_params', '__dict__'
+    __slots__ = '_batch', 'vertices', 'size', 'max_size', 'flags', 'meshes', 'params', '_params', '__dict__'
 
     def __init__(self, vertices, max_size, max_meshes, **params_decls):
         assert max_size <= BATCH_MAX_SIZE
         nparams = len(params_decls)
         names = params_decls.keys()
         formats = params_decls.values()
-        self._batch = create_batch(vertices, max_size, max_meshes, params_format(*formats))
+        self._batch = create_batch(vertices._vertices, max_size, max_meshes, params_format(*formats))
+        self.vertices = vertices
         self.size = 0
         self.max_size = max_size
         self.flags = buffer(c_ubyte, max_size)
@@ -39,12 +40,12 @@ class Batch:
     def __del__(self):
         destroy_batch(self._batch)
 
-    def append(self, flags, mesh, params):
+    def spawn(self, model, *params):
         assert len(params) == len(self.params)
         index = self.size
         assert index < self.max_size
-        self.flags[index] = flags | INSTANCE_FLAG_SPAWNED
-        self.meshes[index] = mesh
+        self.flags[index] = model.flags | INSTANCE_FLAG_SPAWNED
+        self.meshes[index] = model.mesh
         for self_params, param in zip(self.params, params):
             self_params[index] = param
         self.size += 1

game/entity.py

@@ -0,0 +1,20 @@
+# Copyright (C) 2022 RozK
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+class Entity:
+    __slots__ = 'index'
+
+    def __init__(self, batch, model, *params):
+        self.index = batch.spawn(model, *params)

game/game.py

@@ -13,24 +13,28 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import time
+from time import thread_time
 from math import pi, tau, dist
-from ctypes import Structure
 
 from engine import *
 
 from game import math
-from game import triangles
-from game import sea
-from game.shader import Shader
-from game.generator import Generator
-from game.resources import RuntimeArchive
-from game.batch import Batch
-from game.camera import Camera
-from game.environment import Environment
+from game.time import Time
 from game.events import Events
 from game.mouse import Mouse
 from game.keyboard import Keyboard
+from game.generator import Generator
+from game.resources import Archive
+from game.texture import Texture
+from game.shader import Shader
+from game.vertices import Vertices
+from game.camera import Camera
+from game.environment import Environment
+from game.inputs import InputFloat
+from game.batch import Batch
+from game.entity import Entity
+from game.scene import Node, SceneNode, TextureNode, ShaderNode, InputNode, DrawNode, FuncNode
+from game import sea
 
 proj_hfov = pi * 0.25
 proj_ratio = 16.0 / 9.0
@@ -40,36 +44,89 @@ proj_far_z = 3000.0
 sun_direction = math.vec3_normalize((1.0, 0.0, 0.5))
 sun_power = 1.0
 
-def main():
-    print("Generating terrain...")
-    gen_begin = time.thread_time()
-    generated = Generator(256)
-    gen_end = time.thread_time()
-    print("Done: ", round(gen_end - gen_begin, 2), "seconds")
+class PerfNode(Node):
+    __slots__ = '_count', '_min', '_max', '_total', '_name'
 
-    print("Initializing...")
-    display = create_display(b'RK Island - Drag to rotate, wheel to zoom, q to quit', 1600, 900)
-    events = Events(display)
-    mouse = Mouse(events, wheel = 60, wheel_min = 20)
-    keyboard = Keyboard(events)
-    render_initialize(__debug__)
-    terrain_shader = Shader('terrain', 'common')
+    def __init__(self, name, *subnodes):
+        Node.__init__(self, *subnodes)
+        self._count = None
+        self._min = 10000.0
+        self._max = 0.0
+        self._total = 0.0
+        self._name = name
+
+    def __del__(self):
+        avg = round(self._total / self._count, 2)
+        print(self._name, "*", self._count,
+            ": min =", round(self._min, 2), ", max =", round(self._max, 2), ", avg =", avg, "(ms)")
+
+    def draw(self, time):
+        begin = thread_time()
+        Node.draw(self, time)
+        elapsed = (thread_time() - begin) * 1000.0
+        if self._count is None:
+            self._count = 0
+        else:
+            self._count += 1
+            self._min = min(self._min, elapsed)
+            self._max = max(self._max, elapsed)
+            self._total += elapsed
+
+class TestEntity(Entity):
+    __slots__ = 'translation', 'orientation', 'spawn_translation', 'spawn_orientation'
+
+    def __init__(self, batch, model, translation, orientation):
+        Entity.__init__(self, batch, model, translation, orientation)
+        self.translation = batch.translation[self.index]
+        self.orientation = batch.orientation[self.index]
+        self.spawn_translation = translation
+        self.spawn_orientation = orientation
+
+def update_camera(time, mouse, camera, environment):
+    camera_yaw = mouse.drag[0] * 0.001
+    camera_pitch = mouse.drag[1] * 0.001 + pi * 0.25
+    camera_distance = mouse.wheel * 20.0
+    camera.set_view(camera_yaw % tau, camera_pitch % tau, camera_distance)
+    environment.from_sun(camera.view, sun_direction, sun_power)
+
+def update_tests(time, blob, cube, clouds):
+    rotation = mat3()
+    mat3_rotation(rotation, vec3_up, (time.current * 0.21) % tau)
+    mat3_mul_vec3(blob.translation, rotation, blob.spawn_translation)
+    mat3_mul_vec3(cube.translation, rotation, cube.spawn_translation)
+    mat3_rotation(cube.orientation, vec3_up, (time.current * 0.43) % tau)
+    mat3_rotation(clouds.orientation, vec3_up, (time.current * -0.037) % tau)
+
+def update_sea(time, camera, sea_phase):
+    camera.to_km()
+    sea_phase.update((time.current * 0.023) % 1.0)
+
+def create_scene(keyboard, mouse):
+    tiles_shader = Shader('tiles', 'common')
     tests_shader = Shader('tests', 'common')
-    sky_shader = Shader('sky')
+    sea_shader = Shader('sea')
 
-    heightmap = create_texture(
+    camera = Camera()
+    camera.set_projection(proj_hfov, proj_ratio, proj_near_z, proj_far_z)
+    environment = Environment()
+    sea_phase = InputFloat(sea_shader.u_sea_phase, 0.0)
+
+    print("Generating terrain...")
+    generated = Generator(256)
+
+    heightmap = Texture(
         TEXTURE_FORMAT_FLOAT_32, 256, 256, 0, TEXTURE_FLAG_MIN_LINEAR | TEXTURE_FLAG_MAG_LINEAR,
         generated.packed_heights)
-    normalmap = create_texture(
+    normalmap = Texture(
         TEXTURE_FORMAT_RGB10_A2, 256, 256, 0, TEXTURE_FLAG_MIN_LINEAR | TEXTURE_FLAG_MAG_LINEAR,
         generated.packed_normals)
 
     print("Loading resources...")
-    archive = RuntimeArchive.load('data/rk_island.rkar')
+    archive = Archive.load('data/rk_island.rkar')
 
     print("Building tiles...")
-    tiles_texture = archive.get_texture('tiles')
-    tiles_vertices = archive.get_vertices('tiles')
+    tiles_texture = Texture(*archive.get_texture('tiles'))
+    tiles_vertices = Vertices(*archive.get_vertices('tiles'))
     water_model = archive.get_model('water')
     sand_model = archive.get_model('sand')
     grass_model = archive.get_model('grass')
@@ -77,7 +134,7 @@ def main():
     rock_model = archive.get_model('rock')
     mud_model = archive.get_model('mud')
     lava_model = archive.get_model('lava')
-    terrain_batch = Batch(tiles_vertices, generated.size ** 2, 8, translation = PARAM_FORMAT_VEC3_SHORT)
+    tiles_batch = Batch(tiles_vertices, generated.size ** 2, 8, translation = PARAM_FORMAT_VEC3_SHORT)
 
     #TODO: generator & for real
     vc = generated.volcano_c
@@ -108,165 +165,71 @@ def main():
             model = mud_model
         else:
             model = rock_model
-        model.spawn(terrain_batch, vec3(float(((mx - 128) * 8) + 4), float(((127 - my) * 8) + 4), 0.0))
+        tiles_batch.spawn(model, vec3(float(((mx - 128) * 8) + 4), float(((127 - my) * 8) + 4), 0.0))
 
-    tests_texture = archive.get_texture('tests')
-    tests_vertices = archive.get_vertices('tests')
+    tests_texture = Texture(*archive.get_texture('tests'))
+    tests_vertices = Vertices(*archive.get_vertices('tests'))
     blob_model = archive.get_model('blob')
     cube_model = archive.get_model('cube')
     clouds_model = archive.get_model('clouds')
     tests_batch = Batch(tests_vertices, 3, 3,
         translation = PARAM_FORMAT_VEC3_FLOAT,
         orientation = PARAM_FORMAT_MAT3_INT10 | PARAM_FORMAT_NORMALIZE)
-    blob_spawn_translation = vec3(-100.0, -500.0, 0.0)
-    cube_spawn_translation = vec3(100.0, -500.0, 0.0)
     blob_forward = math.vec3_normalize((sun_direction[0], sun_direction[1], 0.0))
     blob_right = math.vec3_cross(blob_forward, math.vec3_up)
-    blob_id = blob_model.spawn(tests_batch,
-        blob_spawn_translation, mat3(vec3(*blob_right), vec3(*blob_forward), vec3_up))
-    cube_id = cube_model.spawn(tests_batch, cube_spawn_translation, mat3_identity)
-    clouds_id = clouds_model.spawn(tests_batch, vec3(0.0, 0.0, 32.0), mat3_identity)
+    blob_orientation = mat3(vec3(*blob_right), vec3(*blob_forward), vec3_up)
+    blob = TestEntity(tests_batch, blob_model, vec3(-100.0, -500.0, 0.0), blob_orientation)
+    cube = TestEntity(tests_batch, cube_model, vec3(100.0, -500.0, 0.0), mat3_identity)
+    clouds = TestEntity(tests_batch, clouds_model, vec3(0.0, 0.0, 32.0), mat3_identity)
 
     sea_polar_textures = sea.load_polar_textures(('data/sea_bump1.png', 'data/sea_bump2.png'))
     sea_detail_texture = sea.load_detail_texture('data/sea_bump.png')
-    sky_triangles = create_triangles(triangles.sky_triangles(64, proj_far_z - 0.1, proj_ratio))
+    sea_triangles = sea.sea_triangles(64, proj_far_z - 0.1, proj_ratio)
 
-    camera = Camera()
-    camera.set_projection(proj_hfov, proj_ratio, proj_near_z, proj_far_z)
-    environment = Environment()
-
-    blob_translation = tests_batch.translation[blob_id]
-    cube_translation = tests_batch.translation[cube_id]
-    cube_orientation = tests_batch.orientation[cube_id]
-    clouds_orientation = tests_batch.orientation[clouds_id]
+    return SceneNode(
+        PerfNode('frame',
+            TextureNode({1: heightmap, 2: normalmap},
+                FuncNode(update_camera, (mouse, camera, environment)),
+                TextureNode({0: tiles_texture},
+                    ShaderNode(tiles_shader,
+                        InputNode(tiles_shader, camera, environment),
+                        PerfNode('tiles_batch',
+                            DrawNode(tiles_batch)))),
+                FuncNode(update_tests, (blob, cube, clouds)),
+                TextureNode({0: tests_texture},
+                    ShaderNode(tests_shader,
+                        InputNode(tests_shader, camera, environment),
+                        PerfNode('tests_batch',
+                            DrawNode(tests_batch))))),
+            FuncNode(update_sea, (camera, sea_phase)),
+            TextureNode({0: sea_polar_textures, 1: sea_detail_texture},
+                ShaderNode(sea_shader,
+                    InputNode(sea_shader, camera, environment, sea_phase),
+                    PerfNode('sea_triangles',
+                        DrawNode(sea_triangles))))))
 
+def loop(display):
+    events = Events(display)
+    keyboard = Keyboard(events)
+    mouse = Mouse(events, wheel = 60, wheel_min = 20)
+    scene = create_scene(keyboard, mouse)
     print("Running... Ctrl+c to quit")
-    start_time = time.monotonic()
-    current_time = 0.0
-    frame = 0
-    frame_min = 10000.0
-    frame_max = 0.0
-    frame_avg = 0.0
-    draw_min = 10000.0
-    draw_max = 0.0
-    draw_avg = 0.0
-    perf_count = 0
+    time = Time()
     try:
-        while True:
-            current_time = time.monotonic() - start_time
-            frame_begin = time.thread_time()
-
+        while not keyboard.quit:
             events.update()
-            if keyboard.quit:
-                break
-
-            begin_frame()
-
-            camera_distance = mouse.wheel * 20.0
-            camera_yaw = mouse.drag[0] * 0.001
-            camera_pitch = mouse.drag[1] * 0.001 + pi * 0.25
-            camera.set_view(camera_yaw, camera_pitch, camera_distance)
-            environment.from_sun(camera.view, sun_direction, sun_power)
-
-            terrain_shader.select()
-            camera.set_inputs(terrain_shader)
-            environment.set_inputs(terrain_shader)
-            select_texture(0, tiles_texture)
-            select_texture(1, heightmap)
-            select_texture(2, normalmap)
-            draw_begin = time.thread_time()
-            terrain_batch.draw()
-            draw_end = time.thread_time()
-            unselect_texture(0, tiles_texture)
-            unselect_texture(1, heightmap)
-            unselect_texture(2, normalmap)
-            terrain_shader.unselect()
-
-            rotation = mat3()
-            mat3_rotation(rotation, vec3_up, (current_time * 0.21) % tau)
-            mat3_mul_vec3(blob_translation, rotation, blob_spawn_translation)
-            mat3_mul_vec3(cube_translation, rotation, cube_spawn_translation)
-            mat3_rotation(cube_orientation, vec3_up, (current_time * 0.43) % tau)
-            mat3_rotation(clouds_orientation, vec3_up, (current_time * -0.037) % tau)
-
-            tests_shader.select()
-            camera.set_inputs(tests_shader)
-            environment.set_inputs(tests_shader)
-            select_texture(0, tests_texture)
-            select_texture(1, heightmap)
-            select_texture(2, normalmap)
-            tests_batch.draw()
-            unselect_texture(0, tests_texture)
-            unselect_texture(1, heightmap)
-            unselect_texture(2, normalmap)
-            tests_shader.unselect()
-
-            camera.to_km()
-
-            sky_shader.select()
-            camera.set_inputs(sky_shader)
-            environment.set_inputs(sky_shader)
-            set_input_float(sky_shader.u_sea_phase, (current_time * 0.023) % 1.0)
-            select_texture(0, sea_polar_textures)
-            select_texture(1, sea_detail_texture)
-            draw_triangles(sky_triangles)
-            unselect_texture(0, sea_polar_textures)
-            unselect_texture(1, sea_detail_texture)
-            sky_shader.unselect()
-
-            frame_end = time.thread_time()
-            end_frame()
+            time.update()
+            clear_buffer(True, True, True)
+            scene.draw(time)
             swap_buffers(display)
-
-            if frame > 0:
-                draw_ms = draw_end - draw_begin
-                draw_min = min(draw_min, draw_ms)
-                draw_max = max(draw_max, draw_ms)
-                draw_avg += draw_ms
-                frame_ms = frame_end - frame_begin
-                frame_min = min(frame_min, frame_ms)
-                frame_max = max(frame_max, frame_ms)
-                frame_avg += frame_ms
-                perf_count += 1
-            frame += 1
-
     except KeyboardInterrupt:
         pass
 
-    print("\rDraw  *", perf_count,
-        ": min =", round(draw_min * 1000.0, 2),
-        ", max =", round(draw_max * 1000.0, 2),
-        ", avg =", round((draw_avg / perf_count) * 1000.0, 2), "ms")
-
-    print("\rFrame *", perf_count,
-        ": min =", round(frame_min * 1000.0, 2),
-        ", max =", round(frame_max * 1000.0, 2),
-        ", avg =", round((frame_avg / perf_count) * 1000.0, 2), "ms")
-
-    # seed 666
-    #    for _ in range(10000):
-    #        current_time = 0 # time.monotonic() - start_time
-
-    # Draw  * 9999 : min = 0.14 , max = 0.43 , avg = 0.19 ms
-    # Draw  * 9999 : min = 0.14 , max = 0.35 , avg = 0.19 ms
-    # Draw  * 9999 : min = 0.13 , max = 0.44 , avg = 0.18 ms
-
-    # Frame * 9999 : min = 0.21 , max = 0.7 , avg = 0.33 ms
-    # Frame * 9999 : min = 0.2 , max = 0.54 , avg = 0.31 ms
-    # Frame * 9999 : min = 0.19 , max = 0.6 , avg = 0.29 ms
-
+def main():
+    print("Initializing...")
+    display = create_display(b'RK Island - Drag to rotate, wheel to zoom, q to quit', 1600, 900)
+    render_initialize(__debug__)
+    loop(display)
     print("Quitting...")
-    del tests_batch
-    del terrain_batch
-    destroy_texture(sea_polar_textures)
-    destroy_texture(sea_detail_texture)
-    destroy_texture(heightmap)
-    destroy_texture(normalmap)
-    destroy_triangles(sky_triangles)
-    archive.destroy()
-    del terrain_shader
-    del tests_shader
-    del sky_shader
     render_terminate()
-    del events
     destroy_display(display)

game/inputs.py

@@ -0,0 +1,29 @@
+# Copyright (C) 2022 RozK
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from engine import set_input_float
+
+class InputFloat:
+    __slots__ = '_input', 'value'
+
+    def __init__(self, input, value):
+        self._input = input
+        self.value = value
+
+    def update(self, value):
+        self.value = value
+
+    def set_inputs(self, shader):
+        set_input_float(self._input, self.value)

game/resources.py

@@ -16,9 +16,7 @@
 import struct
 from array import array
 from pathlib import Path
-
 import png
-
 import engine
 
 VERTEX_SIZE = 20
@@ -116,6 +114,14 @@ class TextureData:
         self.flags = flags
         self.pixels = pixels
 
+    def __iter__(self):
+        yield self.format
+        yield self.width
+        yield self.height
+        yield self.nlevels
+        yield self.flags
+        yield self.pixels
+
     @classmethod
     def from_archive(cls, file):
         _read_magic(file, b'TX')
@@ -132,9 +138,6 @@ class TextureData:
         _write_struct(file, 'IIIII', (self.format, self.width, self.height, self.nlevels, self.flags))
         _write_blob(file, self.pixels)
 
-def create_texture(data):
-    return engine.create_texture(data.format, data.width, data.height, data.nlevels, data.flags, data.pixels)
-
 class VerticesData:
     __slots__ = 'name', 'vertices', 'indices'
 
@@ -145,6 +148,12 @@ class VerticesData:
         self.vertices = vertices
         self.indices = indices
 
+    def __iter__(self):
+        yield VERTEX_FORMAT
+        yield len(self.vertices) // VERTEX_SIZE
+        yield self.vertices
+        yield self.indices
+
     @classmethod
     def from_archive(cls, file):
         _read_magic(file, b'VT')
@@ -161,9 +170,6 @@ class VerticesData:
         _write_array(file, self.vertices)
         _write_array(file, self.indices)
 
-def create_vertices(data):
-    return engine.create_vertices(VERTEX_FORMAT, len(data.vertices) // VERTEX_SIZE, data.vertices, data.indices)
-
 class ModelData:
     __slots__ = 'name', 'flags', 'mesh'
 
@@ -184,19 +190,6 @@ class ModelData:
         _write_string(file, self.name)
         _write_struct(file, 'II', (self.flags, self.mesh))
 
-class Model:
-    __slots__ = 'flags', 'mesh'
-
-    def __init__(self, flags, mesh):
-        self.flags = flags
-        self.mesh = mesh
-
-    def spawn(self, batch, *params):
-        return batch.append(self.flags, self.mesh, params)
-
-def create_model(data):
-    return Model(data.flags, data.mesh)
-
 class Archive:
     __slots__ = 'textures_db', 'vertices_db', 'models_db'
 
@@ -205,15 +198,6 @@ class Archive:
         self.vertices_db = vertices_db or {}
         self.models_db = models_db or {}
 
-    def destroy(self):
-        for vertices in self.vertices_db.values():
-            engine.destroy_vertices(vertices)
-        for texture in self.textures_db.values():
-            engine.destroy_texture(texture)
-        self.textures_db.clear()
-        self.vertices_db.clear()
-        self.models_db.clear()
-
     def get_texture(self, name):
         return self.textures_db[name]
 
@@ -223,18 +207,6 @@ class Archive:
     def get_model(self, name):
         return self.models_db[name]
 
-    @classmethod
-    def _new_texture(cls, data):
-        return data
-
-    @classmethod
-    def _new_vertices(cls, data):
-        return data
-
-    @classmethod
-    def _new_model(cls, data):
-        return data
-
     @classmethod
     def from_archive(cls, file):
         textures_db = {}
@@ -244,22 +216,15 @@ class Archive:
         ntextures, nvertices, nmodels = _read_struct(file, 'III')
         for _ in range(ntextures):
             data = TextureData.from_archive(file)
-            textures_db[data.name] = cls._new_texture(data)
+            textures_db[data.name] = data
         for _ in range(nvertices):
             data = VerticesData.from_archive(file)
-            vertices_db[data.name] = cls._new_vertices(data)
+            vertices_db[data.name] = data
         for _ in range(nmodels):
             data = ModelData.from_archive(file)
-            models_db[data.name] = cls._new_model(data)
+            models_db[data.name] = data
         return cls(textures_db, vertices_db, models_db)
 
-    @classmethod
-    def load(cls, filename):
-        file = open(Path(filename), 'rb')
-        archive = cls.from_archive(file)
-        file.close()
-        return archive
-
     def to_archive(self, file):
         _write_magic(file, b'RKAR')
         _write_struct(file, 'III', (len(self.textures_db), len(self.vertices_db), len(self.models_db)))
@@ -270,20 +235,14 @@ class Archive:
         for _, data in self.models_db.items():
             data.to_archive(file)
 
+    @classmethod
+    def load(cls, filename):
+        file = open(Path(filename), 'rb')
+        archive = cls.from_archive(file)
+        file.close()
+        return archive
+
     def save(self, filename):
         file = open(Path(filename), 'wb')
         self.to_archive(file)
         file.close()
-
-class RuntimeArchive(Archive):
-    @classmethod
-    def _new_texture(cls, data):
-        return create_texture(data)
-
-    @classmethod
-    def _new_vertices(cls, data):
-        return create_vertices(data)
-
-    @classmethod
-    def _new_model(cls, data):
-        return create_model(data)

game/scene.py

@@ -0,0 +1,85 @@
+# Copyright (C) 2022 RozK
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+class Node:
+    __slots__ = '_subnodes'
+
+    def __init__(self, *subnodes):
+        self._subnodes = subnodes
+
+    def draw(self, time):
+        for subnode in self._subnodes:
+            subnode.draw(time)
+
+class SceneNode(Node):
+    pass
+
+class TextureNode(Node):
+    __slots__ = '_textures'
+
+    def __init__(self, textures, *subnodes):
+        Node.__init__(self, *subnodes)
+        self._textures = textures
+
+    def draw(self, time):
+        items = self._textures.items()
+        for slot, texture in items:
+            texture.select(slot)
+        Node.draw(self, time)
+        for slot, texture in items:
+            texture.unselect(slot)
+
+class ShaderNode(Node):
+    __slots__ = '_shader'
+
+    def __init__(self, shader, *subnodes):
+        Node.__init__(self, *subnodes)
+        self._shader = shader
+
+    def draw(self, time):
+        self._shader.select()
+        Node.draw(self, time)
+        self._shader.unselect()
+
+class InputNode:
+    __slots__ = '_shader', '_inputs'
+
+    def __init__(self, shader, *inputs):
+        self._shader = shader
+        self._inputs = inputs
+
+    def draw(self, time):
+        shader = self._shader
+        for input in self._inputs:
+            input.set_inputs(shader)
+
+class DrawNode:
+    __slots__ = '_drawable'
+
+    def __init__(self, drawable):
+        self._drawable = drawable
+
+    def draw(self, time):
+        self._drawable.draw()
+
+class FuncNode:
+    __slots__ = '_func', '_params'
+
+    def __init__(self, func, params):
+        self._func = func
+        self._params = params
+
+    def draw(self, time):
+        self._func(time, *self._params)

game/sea.py

@@ -13,14 +13,15 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from itertools import product
+from itertools import chain, product
 from math import tau, cos, sin, copysign
 from array import array
 
-from engine import (create_texture,
-    TEXTURE_FORMAT_RGB10_A2, TEXTURE_FORMAT_TYPECODE, TEXTURE_FLAG_MIN_LINEAR, TEXTURE_FLAG_MAG_LINEAR)
+from engine import TEXTURE_FORMAT_RGB10_A2, TEXTURE_FORMAT_TYPECODE, TEXTURE_FLAG_MIN_LINEAR, TEXTURE_FLAG_MAG_LINEAR
 
 from game.math import vec3_scale, vec3_direction, vec3_cross, vec3_normal_rgb10a2
+from game.texture import Texture
+from game.triangles import Triangles
 from game.resources import load_png
 
 _format = TEXTURE_FORMAT_RGB10_A2
@@ -51,7 +52,7 @@ def load_polar_textures(paths, waves_height = 0.008):
         _width, _height, normals = load_texture(path)
         assert _width == width and _height == height
         data.extend(list(map(_conv, normals)))
-    return create_texture(_format, width, height, len(paths), _flags, data)
+    return Texture(_format, width, height, len(paths), _flags, data)
 
 def load_detail_texture(path, scale = 0.5, waves_height = 0.002):
     width, height, data = load_png(path)
@@ -68,4 +69,36 @@ def load_detail_texture(path, scale = 0.5, waves_height = 0.002):
         return vec3_scale(n, copysign(1.0, n[2]))
     normals = list(map(normal, product(range(height), range(width)), data))
     data = array(_typecode, list(map(_conv, normals)))
-    return create_texture(_format, width, height, 0, _flags, data)
+    return Texture(_format, width, height, 0, _flags, data)
+
+# TODO: with FOV
+def sea_triangles(vsubdivs, distance, projection_ratio):
+    assert vsubdivs > 0
+    vertices = []
+    hsubdivs = round(vsubdivs * projection_ratio)
+    z = -distance
+    width = distance * projection_ratio
+    height = distance
+    startx = width * -0.5
+    starty = height * -0.5
+    stepx = width / hsubdivs
+    stepy = height / vsubdivs
+    y1 = starty
+    y2 = y1 + stepy
+    for sy in range(vsubdivs):
+        x1 = startx
+        x2 = x1 + stepx
+        for sx in range(hsubdivs):
+            a = (x1, y2, z)
+            b = (x2, y1, z)
+            vertices.append((x1, y1, z))
+            vertices.append(b)
+            vertices.append(a)
+            vertices.append((x2, y2, z))
+            vertices.append(a)
+            vertices.append(b)
+            x1 = x2
+            x2 += stepx
+        y1 = y2
+        y2 += stepy
+    return Triangles(array('f', chain.from_iterable(vertices)))

game/shader.py

@@ -15,7 +15,7 @@
 
 from pathlib import Path
 
-from engine import load_shader, resolve_input, select_shader, unselect_shader, destroy_shader
+from engine import create_shader, resolve_input, select_shader, unselect_shader, destroy_shader
 
 def _cleanup(line):
     return line.partition('//')[0].strip()
@@ -70,7 +70,7 @@ class Shader:
         print("Loading fragment shader", frag_name)
         frag_lines = _load_source(path / (frag_name + '_opengles.frag'))
         assert frag_lines
-        self._shader = load_shader(list(map(_convert, vert_lines)), list(map(_convert, frag_lines)))
+        self._shader = create_shader(list(map(_convert, vert_lines)), list(map(_convert, frag_lines)))
         _parse(self, vert_lines, frag_lines)
 
     def __del__(self):

game/texture.py

@@ -0,0 +1,31 @@
+# Copyright (C) 2022 RozK
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from engine import create_texture, select_texture, unselect_texture, destroy_texture
+
+class Texture:
+    __slots__ = '_texture'
+
+    def __init__(self, format, width, height, nlevels, flags, pixels):
+        self._texture = create_texture(format, width, height, nlevels, flags, pixels)
+
+    def __del__(self):
+        destroy_texture(self._texture)
+
+    def select(self, slot):
+        select_texture(slot, self._texture)
+
+    def unselect(self, slot):
+        unselect_texture(slot, self._texture)

game/time.py

@@ -0,0 +1,29 @@
+# Copyright (C) 2022 RozK
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from time import monotonic
+
+class Time:
+    __slots__ = '_start', 'current', 'delta'
+
+    def __init__(self):
+        self._start = monotonic()
+        self.current = 0.0
+        self.delta = 0.0
+
+    def update(self):
+        current = monotonic() - self._start
+        self.delta = current - self.current
+        self.current = current

game/triangles.py

@@ -13,38 +13,16 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from itertools import chain
-from array import array
-from math import cos, sin
+from engine import create_triangles, draw_triangles, destroy_triangles
 
-# TODO: with FOV
-def sky_triangles(vsubdivs, distance, projection_ratio):
-    assert vsubdivs > 0
-    vertices = []
-    hsubdivs = round(vsubdivs * projection_ratio)
-    z = -distance
-    width = distance * projection_ratio
-    height = distance
-    startx = width * -0.5
-    starty = height * -0.5
-    stepx = width / hsubdivs
-    stepy = height / vsubdivs
-    y1 = starty
-    y2 = y1 + stepy
-    for sy in range(vsubdivs):
-        x1 = startx
-        x2 = x1 + stepx
-        for sx in range(hsubdivs):
-            a = (x1, y2, z)
-            b = (x2, y1, z)
-            vertices.append((x1, y1, z))
-            vertices.append(b)
-            vertices.append(a)
-            vertices.append((x2, y2, z))
-            vertices.append(a)
-            vertices.append(b)
-            x1 = x2
-            x2 += stepx
-        y1 = y2
-        y2 += stepy
-    return array('f', chain.from_iterable(vertices))
+class Triangles:
+    __slots__ = '_triangles'
+
+    def __init__(self, triangles):
+        self._triangles = create_triangles(triangles)
+
+    def __del__(self):
+        destroy_triangles(self._triangles)
+
+    def draw(self):
+        draw_triangles(self._triangles)

game/vertices.py

@@ -0,0 +1,25 @@
+# Copyright (C) 2022 RozK
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from engine import create_vertices, destroy_vertices
+
+class Vertices:
+    __slots__ = '_vertices'
+
+    def __init__(self, format, nvertices, vertices, indices):
+        self._vertices = create_vertices(format, nvertices, vertices, indices)
+
+    def __del__(self):
+        destroy_vertices(self._vertices)