Add entity class.

game/batch.py

@@ -40,12 +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

@@ -31,6 +31,7 @@ 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 SceneNode, TextureNode, ShaderNode, InputNode, DrawNode, FuncNode
 from game import sea
 
@@ -42,6 +43,16 @@ proj_far_z = 3000.0
 sun_direction = math.vec3_normalize((1.0, 0.0, 0.5))
 sun_power = 1.0
 
+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
@@ -49,13 +60,13 @@ def update_camera(time, mouse, camera, environment):
     camera.set_view(camera_yaw, camera_pitch, camera_distance)
     environment.from_sun(camera.view, sun_direction, sun_power)
 
-def update_tests(time, blob_translation, blob_spawn_translation, cube_translation, cube_spawn_translation, cube_orientation, clouds_orientation):
+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)
+    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()
@@ -125,7 +136,7 @@ def create_scene(keyboard, mouse):
             model = mud_model
         else:
             model = rock_model
-        model.spawn(tiles_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 = Texture(*archive.get_texture('tests'))
     tests_vertices = Vertices(*archive.get_vertices('tests'))
@@ -135,19 +146,12 @@ def create_scene(keyboard, mouse):
     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)
     blob_forward = math.vec3_normalize((sun_direction[0], sun_direction[1], 0.0))
     blob_right = math.vec3_cross(blob_forward, math.vec3_up)
-    blob_spawn_orientation = mat3(vec3(*blob_right), vec3(*blob_forward), vec3_up)
-    blob_id = blob_model.spawn(tests_batch, blob_spawn_translation, blob_spawn_orientation)
-    blob_translation = tests_batch.translation[blob_id]
-    cube_spawn_translation = vec3(100.0, -500.0, 0.0)
-    cube_id = cube_model.spawn(tests_batch, cube_spawn_translation, mat3_identity)
-    cube_translation = tests_batch.translation[cube_id]
-    cube_orientation = tests_batch.orientation[cube_id]
-    clouds_id = clouds_model.spawn(tests_batch, vec3(0.0, 0.0, 32.0), mat3_identity)
-    clouds_orientation = tests_batch.orientation[clouds_id]
+    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')
@@ -162,7 +166,7 @@ def create_scene(keyboard, mouse):
                 DrawNode(tiles_batch)
             )
         ),
-        FuncNode(update_tests, (blob_translation, blob_spawn_translation, cube_translation, cube_spawn_translation, cube_orientation, clouds_orientation)),
+        FuncNode(update_tests, (blob, cube, clouds)),
         TextureNode((tests_texture, heightmap, normalmap),
             ShaderNode(tests_shader,
                 InputNode(tests_shader, camera),

game/resources.py

@@ -190,9 +190,6 @@ class ModelData:
         _write_string(file, self.name)
         _write_struct(file, 'II', (self.flags, self.mesh))
 
-    def spawn(self, batch, *params):
-        return batch.append(self.flags, self.mesh, params)
-
 class Archive:
     __slots__ = 'textures_db', 'vertices_db', 'models_db'