Added JointExists() and SpriteExists()

rcbasic_runtime/rc_func130_cases.h

@@ -1466,6 +1466,9 @@ case FN_SetSpriteSource: //Sub Procedure
 case FN_GetSpriteSource: //Number Function
 	 rc_push_num(rc_getSpriteSource( GETSPRITESOURCE_SPRITE ));
 	break;
+case FN_SpriteExists: //Number Function
+	 rc_push_num(rc_spriteExists( SPRITEEXISTS_SPRITE ));
+	break;
 case FN_CreateSpriteAnimation: //Number Function
 	 rc_push_num(rc_createSpriteAnimation( CREATESPRITEANIMATION_SPRITE,  CREATESPRITEANIMATION_ANIM_LENGTH,  CREATESPRITEANIMATION_SPEED ));
 	break;
@@ -1877,6 +1880,9 @@ case FN_getJointAngularSpeed: //Number Function
 case FN_DeleteJoint: //Sub Procedure
 	rc_deleteJoint( DELETEJOINT_JOINT_ID );
 	break;
+case FN_JointExists: //Number Function
+	 rc_push_num(rc_jointExists( JOINTEXISTS_JOINT_ID ));
+	break;
 case FN_CreateTileSet: //Number Function
 	 rc_push_num(rc_createTileSet( CREATETILESET_IMG_ID,  CREATETILESET_TILE_W,  CREATETILESET_TILE_H ));
 	break;

rcbasic_runtime/rc_joints.h

@@ -11,6 +11,14 @@
 #include "rc_gfx_core.h"
 
 
+bool rc_jointExists(int joint_id)
+{
+	if(joint_id < 0 || joint_id >= rc_joint.size())
+		return false;
+
+	return rc_joint[joint_id].active;
+}
+
 int rc_createDistanceJoint(int spriteA, int spriteB, double aX, double aY, double bX, double bY, bool collide_connected)
 {
 	if(rc_active_canvas < 0 || rc_active_canvas >= rc_canvas.size())

rcbasic_runtime/rc_spritelib.h

@@ -304,6 +304,13 @@ void sortSpriteZ(int canvas_id)
 	}
 }
 
+bool rc_spriteExists(int spr_id)
+{
+	if(spr_id < 0 || spr_id >= rc_sprite.size())
+		return false;
+
+	return rc_sprite[spr_id].active;
+}
 
 int rc_createSprite(int img_id, double w, double h)
 {