Collision detection system

collision/world.go

@@ -0,0 +1,32 @@
+package collision
+
+type World struct {
+	Entities []Collidable
+}
+
+func (w *World) AddEntity(e Collidable) {
+	w.Entities = append(w.Entities, e)
+}
+
+func (w *World) RemoveEntity(e Collidable) {
+	for i, entity := range w.Entities {
+		if entity == e {
+			w.Entities = append(w.Entities[:i], w.Entities[i+1:]...)
+		}
+	}
+}
+
+func (w *World) NotifyAboutCollisions() {
+	for i, entity := range w.Entities {
+		for _, other := range w.Entities[i+1:] {
+			if entity.CollisionShape().Overlaps(other.CollisionShape()) {
+				entity.HandleCollisionEvent(other)
+				other.HandleCollisionEvent(entity)
+			}
+		}
+	}
+}
+
+func NewWorld() *World {
+	return &World{}
+}