From 7cb0381ac2042a3c54c4288600ef31002682dc05 Mon Sep 17 00:00:00 2001
From: Arthur Cormerais <arthur@voxowl.com>
Date: Fri, 1 Aug 2025 18:26:18 +0200
Subject: [PATCH] engine : quads now auto-fit collider to model size

---
 core/quad.c      | 18 ++++++++++++------
 core/quad.h      |  1 +
 core/transform.c |  2 ++
 3 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/core/quad.c b/core/quad.c
index c03aa98f5..8e9888265 100644
--- a/core/quad.c
+++ b/core/quad.c
@@ -212,9 +212,8 @@ void quad_check_and_clear_drawmodes(Quad *q) {
 
 void quad_set_width(Quad *q, float value) {
     q->width = value;
-    if (float_isZero(q->anchorX, EPSILON_ZERO) == false) {
-        transform_set_physics_dirty(q->transform);
-    }
+    quad_fit_collider_to_bounding_box(q);
+    transform_set_physics_dirty(q->transform);
 }
 
 float quad_get_width(const Quad *q) {
@@ -223,9 +222,8 @@ float quad_get_width(const Quad *q) {
 
 void quad_set_height(Quad *q, float value) {
     q->height = value;
-    if (float_isZero(q->anchorY, EPSILON_ZERO) == false) {
-        transform_set_physics_dirty(q->transform);
-    }
+    quad_fit_collider_to_bounding_box(q);
+    transform_set_physics_dirty(q->transform);
 }
 
 float quad_get_height(const Quad *q) {
@@ -463,6 +461,14 @@ float quad_get_9slice_corner_width(const Quad *q) {
     return _quad_get_flag(q, QUAD_FLAG_9SLICE) ? q->offsetV : QUAD_DEFAULT_9SLICE_CORNER_WIDTH;
 }
 
+void quad_fit_collider_to_bounding_box(const Quad *q) {
+    RigidBody *rb = transform_get_rigidbody(q->transform);
+    if (rb == NULL || rigidbody_is_collider_custom_set(rb))
+        return;
+    Box bb = { { 0.0f, 0.0f, 0.0f }, { q->width, q->height, EPSILON_COLLISION } };
+    rigidbody_set_collider(rb, &bb, false);
+}
+
 // MARK: - Draw modes -
 
 void quad_drawmode_set_billboard(Quad *q, BillboardMode mode) {
diff --git a/core/quad.h b/core/quad.h
index d0660fd61..972e213e1 100644
--- a/core/quad.h
+++ b/core/quad.h
@@ -93,6 +93,7 @@ void quad_set_9slice_scale(Quad *q, float value);
 float quad_get_9slice_scale(const Quad *q);
 void quad_set_9slice_corner_width(Quad *q, float value);
 float quad_get_9slice_corner_width(const Quad *q);
+void quad_fit_collider_to_bounding_box(const Quad *q);
 
 // MARK: - Draw modes -
 
diff --git a/core/transform.c b/core/transform.c
index d0b61ea85..ae523b37d 100644
--- a/core/transform.c
+++ b/core/transform.c
@@ -428,6 +428,8 @@ bool transform_ensure_rigidbody(Transform *t,
             mesh_fit_collider_to_bounding_box((Mesh*)t->ptr);
         } else if (t->type == ShapeTransform) {
             shape_fit_collider_to_bounding_box((Shape*)t->ptr);
+        } else if (t->type == QuadTransform) {
+            quad_fit_collider_to_bounding_box((Quad*)t->ptr);
         }
     }
     return isNew;