GetRayBoxCells also returns exit point.

API.md

@@ -7989,11 +7989,11 @@ Get collision info between ray and quad
 
 ---
 
-> cells = RL.GetRayBoxCells( Ray ray, BoundingBox box, Vector3 cellSize )
+> cells, exitPoint = RL.GetRayBoxCells( Ray ray, BoundingBox box, Vector3 cellSize )
 
-Get cell positions inside box that intersect with the ray. Returns empty table if ray misses the box
+Get cell positions inside box that intersect with the ray. Also returns ray exit point. Returns empty table if ray misses the box
 
-- Success return Vector3{}
+- Success return Vector3{}, RayCollision|nil
 
 ---
 

ReiLua_API.lua

@@ -5137,12 +5137,13 @@ function RL.GetRayCollisionTriangle( ray, p1, p2, p3 ) end
 ---@return any rayCollision 
 function RL.GetRayCollisionQuad( ray, p1, p2, p3, p4 ) end
 
----Get cell positions inside box that intersect with the ray. Returns empty table if ray misses the box
+---Get cell positions inside box that intersect with the ray. Also returns ray exit point. Returns empty table if ray misses the box
----- Success return Vector3{}
+---- Success return Vector3{}, RayCollision|nil
 ---@param ray any
 ---@param box any
 ---@param cellSize table
 ---@return any cells
+---@return any exitPoint 
 function RL.GetRayBoxCells( ray, box, cellSize ) end
 
 -- Audio - Audio device management functions

examples/ray_box_cells/main.lua

@@ -16,6 +16,7 @@ local drawCellSize = cellSize:clone()
 local ray = nil
 local rayCol = nil
 local cells = {}
+local exitPoint = {}
 
 local guiMouseHover = false
 local spinnerEdit = {
@@ -64,7 +65,7 @@ function RL.update( delta )
 		ray = RL.GetMouseRay( RL.GetMousePosition(), camera.camera )
 		rayCol = box:getRayCollision( ray )
 
-		cells = RL.GetRayBoxCells( ray, box:maxToPos(), cellSize )
+		cells, exitPoint = RL.GetRayBoxCells( ray, box:maxToPos(), cellSize )
 		drawCellSize:setV( cellSize )
 	end
 end
@@ -95,11 +96,12 @@ function RL.draw()
 			RL.DrawRay( ray, RL.BLUE )
 			RL.DrawSphere( ray[1], 0.1, RL.GREEN )
 		end
-
 		if rayCol and rayCol.hit then
 			RL.DrawSphere( rayCol.point, 0.1, RL.RED )
 		end
-
+		if exitPoint.hit then
+			RL.DrawSphere( exitPoint.point, 0.1, RL.RED )
+		end
 		if cells then
 			for _, cell in ipairs( cells ) do
 				RL.DrawCubeWires( box.min + Vector3:tempT( cell ) * drawCellSize + drawCellSize:scale( 0.5 ), drawCellSize, RL.RED )

src/core.c

@@ -2532,7 +2532,9 @@ Check if a mouse button is NOT being pressed
 int lcoreIsMouseButtonUp( lua_State* L ) {
 	int button = luaL_checkinteger( L, 1 );
 
-	lua_pushboolean( L, IsMouseButtonUp( button ) );
+	/* IsMouseButtonUp is broken. Review when fixed in raylib. */
+	lua_pushboolean( L, !IsMouseButtonDown( button ) );
+	// lua_pushboolean( L, IsMouseButtonUp( button ) );
 
 	return 1;
 }

src/models.c

@@ -2547,11 +2547,11 @@ static inline bool isInsideBox( Vector3 position, BoundingBox box ) {
 }
 
 /*
-> cells = RL.GetRayBoxCells( Ray ray, BoundingBox box, Vector3 cellSize )
+> cells, exitPoint = RL.GetRayBoxCells( Ray ray, BoundingBox box, Vector3 cellSize )
 
-Get cell positions inside box that intersect with the ray. Returns empty table if ray misses the box
+Get cell positions inside box that intersect with the ray. Also returns ray exit point. Returns empty table if ray misses the box
 
-- Success return Vector3{}
+- Success return Vector3{}, RayCollision|nil
 */
 int lmodelsGetRayBoxCells( lua_State* L ) {
 	Ray ray = uluaGetRay( L, 1 );
@@ -2633,19 +2633,32 @@ int lmodelsGetRayBoxCells( lua_State* L ) {
 			absCell = Vector3Add( absCell, move );
 			cellPos = Vector3Add( cellPos, Vector3Multiply( move, signs ) );
 
-			if ( absCell.x < absBounds.x && absCell.y < absBounds.y && absCell.z < absBounds.z ) {
+			float rayMoveScale = fmin( fmin( cellDis.x, cellDis.y ), cellDis.z );
-				absPos = Vector3Add( absPos, Vector3Scale( absDir, fmin( fmin( cellDis.x, cellDis.y ), cellDis.z ) ) );
 
+			absPos = Vector3Add( absPos, Vector3Scale( absDir, rayMoveScale ) );
+			localRayPos = Vector3Add( localRayPos, Vector3Scale( ray.direction, rayMoveScale ) );
+
+			if ( absCell.x < absBounds.x && absCell.y < absBounds.y && absCell.z < absBounds.z ) {
 				uluaPushVector3( L, (Vector3){ round( cellPos.x ), round( cellPos.y ), round( cellPos.z ) } );
 				lua_rawseti( L, -2, cellId );
 
 				cellId++;
 			}
 			else {
-				break;
+				Vector3 exitPoint = Vector3Add( localRayPos, box.min );
+
+				uluaPushRayCollision( L, (RayCollision){
+					.hit = true,
+					.distance = Vector3Distance( ray.position, exitPoint ),
+					.point = exitPoint,
+					.normal = Vector3Multiply( move, Vector3Negate( signs ) )
+				} );
+
+				return 2;
 			}
 		}
 	}
+	lua_pushnil( L );
 
-	return 1;
+	return 2;
 }