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49 lines
555 B
Lua
49 lines
555 B
Lua
local ecs = require "ecs"
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local w = ecs.world()
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w:register {
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name = "value",
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type = "int",
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}
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local r = {}
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for i=1, 42 do
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r[i] = w:new {
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value = i,
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reference = true,
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}
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w:new {
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value = -i,
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}
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end
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for v in w:select("value:in") do
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print(v.value)
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if v.value < 0 then
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w:remove(v)
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end
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end
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local function read(i)
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local v = w:sync("value:in", r[i])
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return v.value
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end
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w:remove(r[1])
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w:remove(r[10])
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w:remove(r[20])
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w:remove(r[30])
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w:update()
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for i=1,42 do
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print(pcall(read,i))
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end
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for v in w:select("value:in") do
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print(v.value)
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end
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