Orkuncakilkaya
52270ab5d1
tb_on_add / tb_on_remove take a fn(int) (its states supplied, like a system's) told each handle as
its row is made and before it goes (ecs_hooks.ludic), so what follows a table - a drawing, a
message - does so without a scan. Every row's tick now also stamps its 64-row block, and
tb_changed_since / tb_added_since skip the blocks nobody wrote since: a delta over a large table
costs the blocks that moved. A row moved into a removal's gap keeps its own tick (it was not
written); a removal is told by the hook. ecs_test holds both. The ludic.wildlife table
(5ac3d48, written while builds were held) now builds and passes its 19 tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
18 lines
699 B
Text
18 lines
699 B
Text
# ludic.base/ecs_hooks.ludic - observers on a table: told each handle as its row is made, and before
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# it is removed, so what depends on a table (a drawing, a message) follows it without a scan
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# an observer: a function handed an entity's handle (its states are supplied, like a system's)
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export property TbHook {
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run: fn(int) -> void = null
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}
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# f is told every handle added from here on, and every handle about to be removed
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export function tb_on_add<T>(tb: Table<T>, f: fn(int) -> void) -> void {
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let hk = new TbHook
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hk.run = f
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push(tb.on_add, hk)
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}
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export function tb_on_remove<T>(tb: Table<T>, f: fn(int) -> void) -> void {
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let hk = new TbHook
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hk.run = f
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push(tb.on_remove, hk)
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}
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