groups have a phase and after dependencies, but systems don't

develop/example.lua

@@ -22,6 +22,13 @@ local phases = {
     shutdown = evo.phase():build(),
 }
 
+local groups = {
+    awake = evo.group():phase(phases.awake):build(),
+    physics = evo.group():phase(phases.physics):build(),
+    graphics = evo.group():phase(phases.graphics):build(),
+    shutdown = evo.group():phase(phases.shutdown):build(),
+}
+
 local singles = {
     delta_time = evo.fragment():single(0.016):build(),
     physics_gravity = evo.fragment():single(vector2(0, 9.81)):build(),
@@ -40,7 +47,7 @@ local queries = {
 }
 
 local awake_system = evo.system()
-    :phase(phases.awake)
+    :group(groups.awake)
     :prologue(function()
         print '-= | Awake | =-'
         evo.entity()
@@ -51,7 +58,7 @@ local awake_system = evo.system()
     end):build()
 
 local integrate_forces_system = evo.system()
-    :phase(phases.physics)
+    :group(groups.physics)
     :query(queries.physics_bodies)
     :execute(function(chunk, entities, entity_count)
         ---@type number, evolved.vector2
@@ -72,8 +79,7 @@ local integrate_forces_system = evo.system()
     end):build()
 
 local integrate_velocities_system = evo.system()
-    :phase(phases.physics)
-    :after(integrate_forces_system)
+    :group(groups.physics)
     :query(queries.physics_bodies)
     :execute(function(chunk, entities, entity_count)
         ---@type number
@@ -96,7 +102,7 @@ local integrate_velocities_system = evo.system()
     end):build()
 
 local graphics_system = evo.system()
-    :phase(phases.graphics)
+    :group(groups.graphics)
     :query(queries.physics_bodies)
     :execute(function(chunk, entities, entity_count)
         ---@type evolved.vector2[]
@@ -113,7 +119,7 @@ local graphics_system = evo.system()
     end):build()
 
 local shutdown_system = evo.system()
-    :phase(phases.shutdown)
+    :group(groups.shutdown)
     :epilogue(function()
         print '-= | Shutdown | =-'
         evo.batch_destroy(queries.physics_bodies)

develop/untests.lua

@@ -6569,26 +6569,6 @@ do
     end
 end
 
-do
-    local s1 = evo.system():build()
-    do
-        local after = evo.get(s1, evo.AFTER)
-        assert(after == nil)
-    end
-
-    local s2 = evo.system():after(s1):build()
-    do
-        local after = evo.get(s2, evo.AFTER)
-        assert(#after == 1 and after[1] == s1)
-    end
-
-    local s3 = evo.system():after(s1, s2):build()
-    do
-        local after = evo.get(s3, evo.AFTER)
-        assert(#after == 2 and after[1] == s1 and after[2] == s2)
-    end
-end
-
 do
     local f1, f2 = evo.id(2)
 
@@ -8222,3 +8202,23 @@ do
     local s = evo.system():group(g):build()
     assert(evo.get(s, evo.GROUP) == g)
 end
+
+do
+    local s1 = evo.group():build()
+    do
+        local after = evo.get(s1, evo.AFTER)
+        assert(after == nil)
+    end
+
+    local g2 = evo.group():after(s1):build()
+    do
+        local after = evo.get(g2, evo.AFTER)
+        assert(#after == 1 and after[1] == s1)
+    end
+
+    local g3 = evo.group():after(s1, g2):build()
+    do
+        local after = evo.get(g3, evo.AFTER)
+        assert(#after == 2 and after[1] == s1 and after[2] == g2)
+    end
+end