From 91851d4ef98850460368d2c5f274f365b92879f4 Mon Sep 17 00:00:00 2001
From: Relintai <relintai@gmail.com>
Date: Sat, 2 Nov 2019 00:01:07 +0100
Subject: [PATCH] Implemented spell learn spell requiremets.

---
 entities/entity.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/entities/entity.cpp b/entities/entity.cpp
index 0ba29d2..2217778 100644
--- a/entities/entity.cpp
+++ b/entities/entity.cpp
@@ -2470,7 +2470,6 @@ Ref<AuraData> Entity::sget_aura_by_bind(Node *caster, int aura_id) {
 	return sget_aura_by(e, aura_id);
 }
 
-
 Ref<AuraData> Entity::sget_aura_with_group_by(Entity *caster, Ref<AuraGroup> aura_group) {
 	for (int i = 0; i < _s_auras.size(); ++i) {
 		Ref<AuraData> ad = _s_auras.get(i);
@@ -2496,7 +2495,6 @@ Ref<AuraData> Entity::sget_aura_with_group_by_bind(Node *caster, Ref<AuraGroup>
 	return sget_aura_with_group_by(e, aura_group);
 }
 
-
 int Entity::cget_aura_count() {
 	return _s_auras.size();
 }
@@ -3370,7 +3368,16 @@ void Entity::slearn_spell(int id) {
 	for (int i = 0; i < cd->get_num_spells(); ++i) {
 		Ref<Spell> sp = cd->get_spell(i);
 
+		if (!sp.is_valid())
+			continue;
+
 		if (sp->get_id() == id) {
+			Ref<Spell> req_spell = sp->get_training_required_spell();
+
+			if (req_spell.is_valid() && !hass_spell(req_spell)) {
+				return;
+			}
+
 			adds_spell(sp);
 			sets_free_spell_points(_s_free_spell_points - 1);
 			return;