simple not impl api

develop/example.lua

@@ -1 +1,41 @@
 local evolved = require 'evolved.evolved'
+local evolved_singles = require 'evolved.singles'
+local evolved_vectors = require 'evolved.vectors'
+
+local registry = evolved.create_registry()
+
+local singles = {
+    delta_time = evolved_singles.create(registry, 0.016),
+}
+
+local fragments = {
+    position = evolved.create_entity(registry),
+    velocity = evolved.create_entity(registry),
+}
+
+local queries = {
+    bodies = evolved.create_query(registry,
+        fragments.position,
+        fragments.velocity),
+}
+
+do
+    local entity = evolved.create_entity(registry)
+    local position = evolved_vectors.vector2(512, 50)
+    local velocity = evolved_vectors.vector2(math.random(-20, 20), 20)
+    evolved.insert_component(entity, fragments.position, position)
+    evolved.insert_component(entity, fragments.velocity, velocity)
+end
+
+do
+    local dt = evolved_singles.get(singles.delta_time)
+
+    for chunk in evolved.execute_query(queries.bodies) do
+        local ps = chunk.components[fragments.position]
+        local vs = chunk.components[fragments.velocity]
+
+        for i in #chunk.entities do
+            ps[i] = ps[i] + vs[i] * dt
+        end
+    end
+end