From a8377334b7ad10704920bbb2481e1f41dcdbc242 Mon Sep 17 00:00:00 2001
From: Paul Gilbert <dreammaster@scummvm.org>
Date: Sat, 20 Jan 2018 18:32:46 -0500
Subject: [PATCH] XEEN: Add invincible debugger command

---
 engines/xeen/character.cpp | 15 +++++++++++++--
 engines/xeen/character.h   |  5 +++++
 engines/xeen/combat.cpp    |  8 +++++++-
 engines/xeen/debugger.cpp  | 10 +++++++++-
 engines/xeen/debugger.h    |  7 +++++++
 5 files changed, 41 insertions(+), 4 deletions(-)

diff --git a/engines/xeen/character.cpp b/engines/xeen/character.cpp
index e95bf6d4c860..b2cf11d0cb19 100644
--- a/engines/xeen/character.cpp
+++ b/engines/xeen/character.cpp
@@ -1287,7 +1287,7 @@ void Character::setValue(int id, uint value) {
 		// Set condition
 		if (value == 16) {
 			// Clear all the conditions
-			Common::fill(&_conditions[CURSED], &_conditions[NO_CONDITION], false);
+			clearConditions();
 		} else if (value == 6) {
 			_conditions[value] = 1;
 		} else {
@@ -1785,7 +1785,14 @@ void Character::addHitPoints(int amount) {
 }
 
 void Character::subtractHitPoints(int amount) {
-	Sound &sound = *Party::_vm->_sound;
+	Debugger &debugger = *g_vm->_debugger;
+	Sound &sound = *g_vm->_sound;
+
+	// If invincibility is turned on in the debugger, ignore all damage
+	if (debugger._invincible)
+		return;
+
+	// Subtract the given HP amount
 	_currentHp -= amount;
 	bool flag = _currentHp <= 10;
 
@@ -1847,4 +1854,8 @@ int Character::getClassCategory() const {
 	}
 }
 
+void Character::clearConditions() {
+	Common::fill(&_conditions[CURSED], &_conditions[NO_CONDITION], false);
+}
+
 } // End of namespace Xeen
diff --git a/engines/xeen/character.h b/engines/xeen/character.h
index 2db5734909c2..1e13c36260a1 100644
--- a/engines/xeen/character.h
+++ b/engines/xeen/character.h
@@ -529,6 +529,11 @@ class Character {
 	 * Returns a category index for a character, used such for indexing into spell data
 	 */
 	int getClassCategory() const;
+
+	/**
+	 * Clears the character of any currently set conditions
+	 */
+	void clearConditions();
 };
 
 } // End of namespace Xeen
diff --git a/engines/xeen/combat.cpp b/engines/xeen/combat.cpp
index 7b50ae8bf5f3..219652c97621 100644
--- a/engines/xeen/combat.cpp
+++ b/engines/xeen/combat.cpp
@@ -267,6 +267,7 @@ void Combat::giveCharDamage(int damage, DamageType attackType, int charIndex) {
 }
 
 void Combat::doCharDamage(Character &c, int charNum, int monsterDataIndex) {
+	Debugger &debugger = *g_vm->_debugger;
 	EventsManager &events = *_vm->_events;
 	Interface &intf = *_vm->_interface;
 	Map &map = *_vm->_map;
@@ -434,7 +435,12 @@ void Combat::doCharDamage(Character &c, int charNum, int monsterDataIndex) {
 			break;
 		}
 
-		c.subtractHitPoints(damage);
+		if (debugger._invincible)
+			// Invincibility mode is on, so reset conditions that were set
+			c.clearConditions();
+		else
+			// Standard gameplay, deal out the damage
+			c.subtractHitPoints(damage);
 	}
 
 	events.ipause(2);
diff --git a/engines/xeen/debugger.cpp b/engines/xeen/debugger.cpp
index 24cb947ef41a..4efd18137a4f 100644
--- a/engines/xeen/debugger.cpp
+++ b/engines/xeen/debugger.cpp
@@ -44,7 +44,8 @@ static int strToInt(const char *s) {
 
 /*------------------------------------------------------------------------*/
 
-Debugger::Debugger(XeenEngine *vm) : GUI::Debugger(), _vm(vm) {
+Debugger::Debugger(XeenEngine *vm) : GUI::Debugger(), _vm(vm),
+		_invincible(false) {
 	registerCmd("continue", WRAP_METHOD(Debugger, cmdExit));
 	registerCmd("spell", WRAP_METHOD(Debugger, cmdSpell));
 	registerCmd("spells", WRAP_METHOD(Debugger, cmdSpells));
@@ -53,6 +54,7 @@ Debugger::Debugger(XeenEngine *vm) : GUI::Debugger(), _vm(vm) {
 	registerCmd("gems", WRAP_METHOD(Debugger, cmdGems));
 	registerCmd("map", WRAP_METHOD(Debugger, cmdMap));
 	registerCmd("pos", WRAP_METHOD(Debugger, cmdPos));
+	registerCmd("invincible", WRAP_METHOD(Debugger, cmdInvincible));
 
 	_spellId = -1;
 }
@@ -192,4 +194,10 @@ bool Debugger::cmdPos(int argc, const char **argv) {
 	}
 }
 
+bool Debugger::cmdInvincible(int argc, const char **argv) {
+	_invincible = (argc < 2) || strcmp(argv[1], "off");
+	debugPrintf("Invincibility is %s\n", _invincible ? "on" : "off");
+	return true;
+}
+
 } // End of namespace Xeen
diff --git a/engines/xeen/debugger.h b/engines/xeen/debugger.h
index 6841d606e12e..b7e1f1c3257f 100644
--- a/engines/xeen/debugger.h
+++ b/engines/xeen/debugger.h
@@ -69,6 +69,13 @@ class Debugger : public GUI::Debugger {
 	 * Changes the party's position in the current map
 	 */
 	bool cmdPos(int argc, const char **argv);
+
+	/**
+	 * Flags whether to make the party invincible
+	 */
+	bool cmdInvincible(int argc, const char **argv);
+public:
+	bool _invincible;
 public:
 	Debugger(XeenEngine *vm);