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Add some simple assertions to adding and removing systems.

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bakpakin 2015-09-08 13:22:07 -04:00
parent 5035d2c8a7
commit f3b16a40f6
1 changed files with 3 additions and 0 deletions
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3
tiny.lua
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@ -398,8 +398,10 @@ tiny_addEntity = tiny.addEntity
--- Adds a System to the world. Returns the System.
function tiny.addSystem(world, system)
assert(system.world == nil, "System already belongs to a World.")
local s2a = world.systemsToAdd
s2a[#s2a + 1] = system
system.world = world
return system
end
tiny_addSystem = tiny.addSystem
@ -431,6 +433,7 @@ tiny_removeEntity = tiny.removeEntity
--- Removes a System from the world. Returns the System.
function tiny.removeSystem(world, system)
assert(system.world == world, "System does not belong to this World.")
local s2r = world.systemsToRemove
s2r[#s2r + 1] = system
return system