Entirely expanded upon existing proof-of-concept

src/entity.h

@@ -0,0 +1,26 @@
+#ifndef ENTITY_H
+#define ENTITY_H
+
+#include <stdbool.h>
+#include "raylib.h"
+
+typedef struct Entity
+{
+    bool active;
+
+    bool isPlayer;
+    bool affectedByGravity;
+
+    float mass;
+    float size;
+
+    Vector2 position;
+    Vector2 velocity;
+    Vector2 acceleration;
+    Vector2 force;
+
+    Color color;
+
+} Entity;
+
+#endif