51 lines
1.8 KiB
Python
51 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 array import array
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from engine import (
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INSTANCE_FLAG_SPAWNED, BATCH_MAX_SIZE, create_batch, draw_batch, destroy_batch)
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class Batch:
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__slots__ = '_batch', 'max_size', 'flags', 'meshes', 'params'
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def __init__(self, max_size, params_format):
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assert max_size <= BATCH_MAX_SIZE
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self._batch = create_batch(max_size, params_format)
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self.max_size = max_size
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self.flags = array('B')
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self.meshes = array('I')
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self.params = [array('f') for _ in params_format]
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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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assert len(params) == len(self.params)
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index = len(self.flags)
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assert index < self.max_size
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self.flags.append(flags | INSTANCE_FLAG_SPAWNED)
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self.meshes.append(mesh)
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for _params, param in zip(self.params, params):
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_params.extend(param)
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return index
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def set_param(self, param, index, value):
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size = len(value)
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self.params[param][index * size : index * size + size] = value
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def draw(self):
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draw_batch(self._batch, self.flags, self.meshes, self.params)
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