local tiny = require "tiny" local function deep_copy(x) if type(x) == 'table' then local nx = {} for k, v in next, x, nil do nx[deep_copy(k)] = deep_copy(v) end return nx else return x end end local entityTemplate1 = { xform = {x = 0, y = 0}, vel = {x = 1, y = 2}, name = "E1", size = 11, description = "It goes to 11.", spinalTap = true } local entityTemplate2 = { xform = {x = 2, y = 2}, vel = {x = -1, y = 0}, name = "E2", size = 10, description = "It does not go to 11.", onlyTen = true } local entityTemplate3 = { xform = {x = 4, y = 5}, vel = {x = 0, y = 3}, name = "E3", size = 8, description = "The smallest entity.", littleMan = true } describe('tiny-ecs:', function() describe('Filters:', function() local entity1, entity2, entity3 before_each(function() entity1 = deep_copy(entityTemplate1) entity2 = deep_copy(entityTemplate2) entity3 = deep_copy(entityTemplate3) end) it("Default Filters", function() local ftap = tiny.requireAll("spinalTap") local fvel = tiny.requireAll("vel") local fxform = tiny.requireAll("xform") local fall = tiny.requireAny("spinalTap", "onlyTen", "littleMan") -- Only select Entities without "spinalTap" local frtap = tiny.rejectAny("spinalTap") -- Select Entities without all three: "spinalTap", "onlyTen", and -- "littleMan" local frall = tiny.rejectAll("spinalTap", "onlyTen", "littleMan") assert.truthy(fall(nil, entity1)) assert.truthy(ftap(nil, entity1)) assert.falsy(ftap(nil, entity2)) assert.truthy(fxform(nil, entity1)) assert.truthy(fxform(nil, entity2)) assert.truthy(fall(nil, entity1)) assert.truthy(fall(nil, entity2)) assert.truthy(fall(nil, entity3)) assert.falsy(frtap(nil, entity1)) assert.truthy(frtap(nil, entity2)) assert.truthy(frtap(nil, entity3)) assert.truthy(frall(nil, entity1)) assert.truthy(frall(nil, entity2)) assert.truthy(frall(nil, entity3)) end) end) describe('World:', function() local world, entity1, entity2, entity3 local moveSystem = tiny.system({}, {"process"}) moveSystem.filter = tiny.requireAll("xform", "vel") function moveSystem:process(e, dt) local xform = e.xform local vel = e.vel local x, y = xform.x, xform.y local xvel, yvel = vel.x, vel.y xform.x, xform.y = x + xvel * dt, y + yvel * dt end local timePassed = 0 local oneTimeSystem = tiny.system() function oneTimeSystem:update(dt) timePassed = timePassed + dt end before_each(function() entity1 = deep_copy(entityTemplate1) entity2 = deep_copy(entityTemplate2) entity3 = deep_copy(entityTemplate3) world = tiny.world(moveSystem, oneTimeSystem, entity1, entity2, entity3) timePassed = 0 end) it("Create World", function() assert.equals(world:getEntityCount(), 3) assert.equals(world:getSystemCount(), 2) end) it("Run simple simulation", function() world:update(1) assert.equals(timePassed, 1) assert.equals(entity1.xform.x, 1) assert.equals(entity1.xform.y, 2) end) it("Remove Entities", function() world:remove(entity1, entity2) world:update(1) assert.equals(timePassed, 1) assert.equals(entity1.xform.x, entityTemplate1.xform.x) assert.equals(entity2.xform.x, entityTemplate2.xform.x) assert.equals(entity3.xform.y, 8) end) it("Remove Systems", function() world:remove(moveSystem, oneTimeSystem) world:update(1) assert.equals(timePassed, 0) assert.equals(entity1.xform.x, entityTemplate1.xform.x) assert.equals(0, world:getSystemCount()) end) it("Deactivate and Activate Systems", function() moveSystem.active = false oneTimeSystem.active = false world:update(1) assert.equals(world:getSystemCount(), 2) assert.equals(timePassed, 0) assert.equals(entity1.xform.x, entityTemplate1.xform.x) moveSystem.active = true oneTimeSystem.active = true world:update(1) assert.equals(timePassed, 1) assert.are_not.equal(entity1.xform.x, entityTemplate1.xform.x) assert.equals(world:getSystemCount(), 2) end) it("Clear Entities", function() world:clearEntities() world:update(1) assert.equals(0, world:getEntityCount()) end) it("Clear Systems", function() world:clearSystems() world:update(1) assert.equals(0, world:getSystemCount()) end) it("Add Entities Multiple Times", function() world:update(1) world:add(entity1, entity2, entity3) world:update(2) assert.equals(2, world:getSystemCount()) assert.equals(3, world:getEntityCount()) end) it("Remove Entities Multiple Times", function() world:update(1) world:remove(entity1, entity2, entity3) world:update(2) world:remove(entity1, entity2, entity3) world:update(2) assert.equals(2, world:getSystemCount()) assert.equals(0, world:getEntityCount()) end) it("Add Systems Multiple Times", function() world:update(1) world:add(moveSystem, oneTimeSystem) world:update(2) assert.equals(2, world:getSystemCount()) assert.equals(3, world:getEntityCount()) end) it("Remove Systems Multiple Times", function() world:update(1) world:remove(moveSystem) world:update(2) world:remove(moveSystem) world:update(2) assert.equals(1, world:getSystemCount()) assert.equals(3, world:getEntityCount()) end) it("Reorder Systems", function() world:update(1) world:setSystemIndex(moveSystem, 2) world:update(1) assert.equals(2, world:getSystemIndex(moveSystem)) assert.equals(1, world:getSystemIndex(oneTimeSystem)) end) end) end)