collision yes/no

1 files changed, 63 insertions, 2 deletions

diff --git a/physics.hpp b/physics.hpp
index 6e6b259..a800b16 100644
--- a/physics.hpp
+++ b/physics.hpp
@@ -17,6 +17,23 @@ struct Manifold {
 	v3f normal;
 };
 
+struct Int_Collider;
+struct Physics_Debughook {
+	virtual void shrinkwrap(
+		const Int_Collider* col,
+		int axis,
+		const v2f* points,
+		int count
+	);
+	virtual void projection(
+		const Int_Collider* col,
+		const v3f& n,
+		int axis,
+		const v2f* points,
+		int count
+	);
+};
+
 struct Rigidbody;
 struct Int_Collider {
 	Rigidbody* rb;
@@ -26,7 +43,46 @@ struct Int_Collider {
 	v3f* verts;
 	v3f* faces;
 
-	bool collide(const Int_Collider& other) const;
+	bool collide(
+		Physics_Debughook* hook,
+		Arena* a,
+		const Int_Collider& other
+	) const;
+
+	struct Projection {
+		const Int_Collider* col;
+		v3f r, u;
+
+		struct Iter {
+			const Projection* p;
+			int vert;
+
+			bool equals(const Iter& other) const {
+				return vert == other.vert;
+			}
+			bool operator==(const Iter& other) const {
+				return equals(other);
+			}
+			bool operator!=(const Iter& other) const {
+				return !equals(other);
+			}
+			Iter operator++() {
+				vert++;
+				return *this;
+			}
+			v2f operator*();
+		};
+
+		Iter begin() {
+			return { this, 0 };
+		}
+
+		Iter end() {
+			return { this, col->vert_count };
+		}
+	};
+
+	Projection project(const v3f& axis) const;
 };
 
 struct Collider : Asset {
@@ -72,7 +128,12 @@ struct Rigidbody {
 
 Collider* make_box(Arena* a, const v3f& size);
 
-void physics_update(World& w, Arena* a, float ts);
+void physics_update(
+	World& w,
+	Arena* a,
+	float ts,
+	Physics_Debughook* hook
+);
 void physics_debug(World& w, Line_Renderer& lr);
 
 #endif