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https://github.com/bakpakin/tiny-ecs.git
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112 lines
2.5 KiB
Lua
112 lines
2.5 KiB
Lua
local jojo = require "jojo"
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local World = jojo.World
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local Aspect = jojo.Aspect
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local System = jojo.System
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-- Aspect Test --
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local e1 = {
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xform = {
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x = 0,
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y = 0
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},
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vel = {
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x = 1,
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y = 2,
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},
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name = "E1",
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size = 11,
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description = "It goes to 11.",
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spinalTap = true
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}
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local e2 = {
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xform = {
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x = 2,
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y = 2
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},
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vel = {
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x = -1,
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y = 0,
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},
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name = "E2",
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size = 10,
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description = "It does not go to 11."
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}
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local e3 = {
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xform = {
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x = 4,
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y = 5
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},
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vel = {
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x = 0,
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y = 3,
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},
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name = "E3",
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size = 8,
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description = "The smallest entity."
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}
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local atap = Aspect({"spinalTap"})
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local avel = Aspect({"vel"})
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local axform = Aspect({"xform"})
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local aall = Aspect({})
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local aboth = Aspect.compose(atap, axform)
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local amove = Aspect.compose(axform, avel)
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assert(atap:matches(e1), "Aspect atap should match e1.")
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assert(not atap:matches(e2), "Aspect atap should not match e2.")
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assert(axform:matches(e1), "Aspect axform should match e1.")
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assert(axform:matches(e2), "Aspect axform should match e2.")
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assert(aboth:matches(e1), "Aspect aboth should match e1.")
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assert(not aboth:matches(e2), "Aspect aboth should not match e2.")
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local moves = System(
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nil,
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function(e, dt)
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local xform = e.xform
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local vel = e.vel
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local x, y = xform.x, xform.y
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local xvel, yvel = vel.x, vel.y
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xform.x, xform.y = x + xvel * dt, y + yvel * dt
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end,
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amove
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)
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local world = World(moves, System(nil, nil, aall))
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world:add(e1, e2, e3)
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world:update(21)
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assert(e1.xform.x == 21, "e1.xform.x should be 21, but is " .. e1.xform.x)
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assert(e2.xform.x == -19, "e2.xform.x should be -19, but is " .. e2.xform.x)
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assert(e3.xform.y == 68, "e3.xform.y should be 68, but is " .. e3.xform.y)
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world:removeSystems(moves)
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world:update(1234567890)
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world:addSystems(moves)
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world:remove(e3, e2)
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world:update(20)
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assert(e1.xform.x == 41, "e1.xform.x should be 41, but is " .. e1.xform.x)
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assert(e2.xform.x == -19, "e2.xform.x should be -19, but is " .. e2.xform.x)
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assert(e3.xform.y == 68, "e3.xform.y should be 68, but is " .. e3.xform.y)
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world:removeSystems(moves)
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world:update(12345)
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world:addSystems(moves)
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world:add(e3, e2)
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world:update(19)
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world:remove(e3, e2)
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e1.vel = nil
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world:add(e1)
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world:update(11)
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assert(e1.xform.x == 60, "e1.xform.x should be 60, but is " .. e1.xform.x)
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-- TODO add some more tests, add some better tests.
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print("Passed all tests.")
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