48 lines
1.8 KiB
Python
48 lines
1.8 KiB
Python
# Copyright (C) 2022 RozK
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from ctypes import c_ubyte, c_uint, POINTER
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from engine import (
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INSTANCE_FLAG_SPAWNED, BATCH_MAX_SIZE, buffer, create_batch, draw_batch, destroy_batch)
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class Batch:
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__slots__ = '_batch', '_paramsp', 'size', 'max_size', 'flags', 'meshes', 'params'
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def __init__(self, vertices, max_size, params_format, params_type):
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assert max_size <= BATCH_MAX_SIZE
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self._batch = create_batch(vertices, max_size, params_format)
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self._paramsp = POINTER(params_type)
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self.size = 0
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self.max_size = max_size
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self.flags = buffer(c_ubyte, max_size)
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self.meshes = buffer(c_uint, max_size)
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self.params = buffer(params_type, max_size)
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def __del__(self):
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destroy_batch(self._batch)
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def append(self, flags, mesh, params):
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index = self.size
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assert index < self.max_size
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self.flags[index] = flags | INSTANCE_FLAG_SPAWNED
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self.meshes[index] = mesh
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self.params[index] = params
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self.size += 1
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return index
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def draw(self):
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draw_batch(self._batch, self.size, self.flags, self.meshes, self._paramsp(self.params))
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