simple ecs system

server/internal/ecs/ecs_test.go

@@ -0,0 +1,27 @@
+package ecs
+
+import "testing"
+
+func Test_common(t *testing.T) {
+	// W
+	w := NewWorld()
+	// C
+	type pos [2]int
+	type vel [2]int
+	Register(w, pos{})
+	Register(w, vel{})
+	// E
+	w.CreateEntity(pos{0, 0})
+	w.CreateEntity(vel{1, 2})
+	w.CreateEntity(pos{1, 2}, vel{2, 0})
+	// S
+	s1 := FuncSystem(func(p pos) {
+		t.Log("system 1", p)
+	})
+	s2 := FuncSystem(func(p pos, v vel) {
+		t.Log("system 2", p, v)
+	})
+	// Run
+	s1.Update(w)
+	s2.Update(w)
+}