1 files changed, 411 insertions, 0 deletions
diff --git a/src/Entities/EntityEffect.cpp b/src/Entities/EntityEffect.cpp
new file mode 100644
index 000000000..fdcbe822e
--- /dev/null
+++ b/src/Entities/EntityEffect.cpp
@@ -0,0 +1,411 @@
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "EntityEffect.h"
+#include "../Mobs/Monster.h"
+#include "Player.h"
+
+
+
+
+
+int cEntityEffect::GetPotionColor(short a_ItemDamage)
+{
+	// Lowest six bits
+	return (a_ItemDamage & 0x3f);
+}
+
+
+
+
+
+cEntityEffect::eType cEntityEffect::GetPotionEffectType(short a_ItemDamage)
+{
+	// Lowest four bits
+	// Potion effect bits are different from entity effect values
+	// For reference: http://minecraft.gamepedia.com/Data_values#.22Potion_effect.22_bits
+	switch (a_ItemDamage & 0x0f)
+	{
+		case 0x01: return cEntityEffect::effRegeneration;
+		case 0x02: return cEntityEffect::effSpeed;
+		case 0x03: return cEntityEffect::effFireResistance;
+		case 0x04: return cEntityEffect::effPoison;
+		case 0x05: return cEntityEffect::effInstantHealth;
+		case 0x06: return cEntityEffect::effNightVision;
+		case 0x08: return cEntityEffect::effWeakness;
+		case 0x09: return cEntityEffect::effStrength;
+		case 0x0a: return cEntityEffect::effSlowness;
+		case 0x0c: return cEntityEffect::effInstantDamage;
+		case 0x0d: return cEntityEffect::effWaterBreathing;
+		case 0x0e: return cEntityEffect::effInvisibility;
+			
+		// No effect potions
+		case 0x00:
+		case 0x07:
+		case 0x0b:  // Will be potion of leaping in 1.8
+		case 0x0f:
+		{
+			break;
+		}
+	}
+	return cEntityEffect::effNoEffect;
+}
+
+
+
+
+
+short cEntityEffect::GetPotionEffectIntensity(short a_ItemDamage)
+{
+	// Level II potion if the fifth lowest bit is set
+	return ((a_ItemDamage & 0x20) != 0) ? 1 : 0;
+}
+
+
+
+
+
+int cEntityEffect::GetPotionEffectDuration(short a_ItemDamage)
+{
+	// Base duration in ticks
+	int base = 0;
+	double TierCoeff = 1, ExtCoeff = 1, SplashCoeff = 1;
+	
+	switch (GetPotionEffectType(a_ItemDamage))
+	{
+		case cEntityEffect::effRegeneration:
+		case cEntityEffect::effPoison:
+		{
+			base = 900;
+			break;
+		}
+			
+		case cEntityEffect::effSpeed:
+		case cEntityEffect::effFireResistance:
+		case cEntityEffect::effNightVision:
+		case cEntityEffect::effStrength:
+		case cEntityEffect::effWaterBreathing:
+		case cEntityEffect::effInvisibility:
+		{
+			base = 3600;
+			break;
+		}
+			
+		case cEntityEffect::effWeakness:
+		case cEntityEffect::effSlowness:
+		{
+			base = 1800;
+			break;
+		}
+	}
+	
+	// If potion is level II, half the duration. If not, stays the same
+	TierCoeff = (GetPotionEffectIntensity(a_ItemDamage) > 0) ? 0.5 : 1;
+	
+	// If potion is extended, multiply duration by 8/3. If not, stays the same
+	// Extended potion if sixth lowest bit is set
+	ExtCoeff = (a_ItemDamage & 0x40) ? (8.0 / 3.0) : 1;
+	
+	// If potion is splash potion, multiply duration by 3/4. If not, stays the same
+	SplashCoeff = IsPotionDrinkable(a_ItemDamage) ? 1 : 0.75;
+	
+	// Ref.:
+	//   http://minecraft.gamepedia.com/Data_values#.22Tier.22_bit
+	//   http://minecraft.gamepedia.com/Data_values#.22Extended_duration.22_bit
+	//   http://minecraft.gamepedia.com/Data_values#.22Splash_potion.22_bit
+	
+	return (int)(base * TierCoeff * ExtCoeff * SplashCoeff);
+}
+
+
+
+
+
+bool cEntityEffect::IsPotionDrinkable(short a_ItemDamage)
+{
+	// Drinkable potion if 13th lowest bit is set
+	// Ref.: http://minecraft.gamepedia.com/Potions#Data_value_table
+	return ((a_ItemDamage & 0x2000) != 0);
+}
+
+
+
+
+
+cEntityEffect::cEntityEffect():
+	m_Ticks(0),
+	m_Duration(0),
+	m_Intensity(0),
+	m_DistanceModifier(1)
+{
+	
+}
+
+
+
+
+
+cEntityEffect::cEntityEffect(int a_Duration, short a_Intensity, double a_DistanceModifier):
+	m_Ticks(0),
+	m_Duration(a_Duration),
+	m_Intensity(a_Intensity),
+	m_DistanceModifier(a_DistanceModifier)
+{
+	
+}
+
+
+
+
+
+cEntityEffect::cEntityEffect(const cEntityEffect & a_OtherEffect):
+	m_Ticks(a_OtherEffect.m_Ticks),
+	m_Duration(a_OtherEffect.m_Duration),
+	m_Intensity(a_OtherEffect.m_Intensity),
+	m_DistanceModifier(a_OtherEffect.m_DistanceModifier)
+{
+	
+}
+
+
+
+
+
+cEntityEffect & cEntityEffect::operator=(cEntityEffect a_OtherEffect)
+{
+	std::swap(m_Ticks, a_OtherEffect.m_Ticks);
+	std::swap(m_Duration, a_OtherEffect.m_Duration);
+	std::swap(m_Intensity, a_OtherEffect.m_Intensity);
+	std::swap(m_DistanceModifier, a_OtherEffect.m_DistanceModifier);
+	return *this;
+}
+
+
+
+
+
+cEntityEffect * cEntityEffect::CreateEntityEffect(cEntityEffect::eType a_EffectType, int a_Duration, short a_Intensity, double a_DistanceModifier)
+{
+	switch (a_EffectType)
+	{
+		case cEntityEffect::effNoEffect:       return new cEntityEffect              (a_Duration, a_Intensity, a_DistanceModifier);
+		
+		case cEntityEffect::effAbsorption:     return new cEntityEffectAbsorption    (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effBlindness:      return new cEntityEffectBlindness     (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effFireResistance: return new cEntityEffectFireResistance(a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effHaste:          return new cEntityEffectHaste         (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effHealthBoost:    return new cEntityEffectHealthBoost   (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effHunger:         return new cEntityEffectHunger        (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effInstantDamage:  return new cEntityEffectInstantDamage (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effInstantHealth:  return new cEntityEffectInstantHealth (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effInvisibility:   return new cEntityEffectInvisibility  (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effJumpBoost:      return new cEntityEffectJumpBoost     (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effMiningFatigue:  return new cEntityEffectMiningFatigue (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effNausea:         return new cEntityEffectNausea        (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effNightVision:    return new cEntityEffectNightVision   (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effPoison:         return new cEntityEffectPoison        (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effRegeneration:   return new cEntityEffectRegeneration  (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effResistance:     return new cEntityEffectResistance    (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effSaturation:     return new cEntityEffectSaturation    (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effSlowness:       return new cEntityEffectSlowness      (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effSpeed:          return new cEntityEffectSpeed         (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effStrength:       return new cEntityEffectStrength      (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effWaterBreathing: return new cEntityEffectWaterBreathing(a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effWeakness:       return new cEntityEffectWeakness      (a_Duration, a_Intensity, a_DistanceModifier);
+		case cEntityEffect::effWither:         return new cEntityEffectWither        (a_Duration, a_Intensity, a_DistanceModifier);
+	}
+	
+	ASSERT(!"Unhandled entity effect type!");
+	return NULL;
+}
+
+
+
+
+
+void cEntityEffect::OnTick(cPawn & a_Target)
+{
+	// Reduce the effect's duration
+	++m_Ticks;
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cEntityEffectInstantHealth:
+
+void cEntityEffectInstantHealth::OnActivate(cPawn & a_Target)
+{
+	// Base amount = 6, doubles for every increase in intensity
+	int amount = (int)(6 * (1 << m_Intensity) * m_DistanceModifier);
+	
+	if (a_Target.IsMob() && ((cMonster &) a_Target).IsUndead())
+	{
+		a_Target.TakeDamage(dtPotionOfHarming, NULL, amount, 0);  // TODO: Store attacker in a pointer-safe way, pass to TakeDamage
+		return;
+	}
+	a_Target.Heal(amount);
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cEntityEffectInstantDamage:
+
+void cEntityEffectInstantDamage::OnActivate(cPawn & a_Target)
+{
+	// Base amount = 6, doubles for every increase in intensity
+	int amount = (int)(6 * (1 << m_Intensity) * m_DistanceModifier);
+	
+	if (a_Target.IsMob() && ((cMonster &) a_Target).IsUndead())
+	{
+		a_Target.Heal(amount);
+		return;
+	}
+	a_Target.TakeDamage(dtPotionOfHarming, NULL, amount, 0);  // TODO: Store attacker in a pointer-safe way, pass to TakeDamage
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cEntityEffectRegeneration:
+
+void cEntityEffectRegeneration::OnTick(cPawn & a_Target)
+{
+	super::OnTick(a_Target);
+
+	if (a_Target.IsMob() && ((cMonster &) a_Target).IsUndead())
+	{
+		return;
+	}
+	
+	// Regen frequency = 50 ticks, divided by potion level (Regen II = 25 ticks)
+	int frequency = (int) std::floor(50.0 / (double)(m_Intensity + 1));
+	
+	if ((m_Ticks % frequency) != 0)
+	{
+		return;
+	}
+
+	a_Target.Heal(1);
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cEntityEffectHunger:
+
+void cEntityEffectHunger::OnTick(cPawn & a_Target)
+{
+	super::OnTick(a_Target);
+	
+	if (a_Target.IsPlayer())
+	{
+		cPlayer & Target = (cPlayer &) a_Target;
+		Target.SetFoodExhaustionLevel(Target.GetFoodExhaustionLevel() + 0.025);  // 0.5 per second = 0.025 per tick
+	}
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cEntityEffectWeakness:
+
+void cEntityEffectWeakness::OnTick(cPawn & a_Target)
+{
+	super::OnTick(a_Target);
+	
+	// Damage reduction = 0.5 damage, multiplied by potion level (Weakness II = 1 damage)
+	// double dmg_reduc = 0.5 * (a_Effect.GetIntensity() + 1);
+	
+	// TODO: Implement me!
+	// TODO: Weakened villager zombies can be turned back to villagers with the god apple
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cEntityEffectPoison:
+
+void cEntityEffectPoison::OnTick(cPawn & a_Target)
+{
+	super::OnTick(a_Target);
+	
+	if (a_Target.IsMob())
+	{
+		cMonster & Target = (cMonster &) a_Target;
+		
+		// Doesn't effect undead mobs, spiders
+		if (
+			Target.IsUndead() ||
+			(Target.GetMobType() == cMonster::mtSpider) ||
+			(Target.GetMobType() == cMonster::mtCaveSpider)
+		)
+		{
+			return;
+		}
+	}
+	
+	// Poison frequency = 25 ticks, divided by potion level (Poison II = 12 ticks)
+	int frequency = (int) std::floor(25.0 / (double)(m_Intensity + 1));
+	
+	if ((m_Ticks % frequency) == 0)
+	{
+		// Cannot take poison damage when health is at 1
+		if (a_Target.GetHealth() > 1)
+		{
+			a_Target.TakeDamage(dtPoisoning, NULL, 1, 0);
+		}
+	}
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cEntityEffectWither:
+
+void cEntityEffectWither::OnTick(cPawn & a_Target)
+{
+	super::OnTick(a_Target);
+	
+	// Damage frequency = 40 ticks, divided by effect level (Wither II = 20 ticks)
+	int frequency = (int) std::floor(25.0 / (double)(m_Intensity + 1));
+
+	if ((m_Ticks % frequency) == 0)
+	{
+		a_Target.TakeDamage(dtWither, NULL, 1, 0);
+	}
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cEntityEffectSaturation:
+
+void cEntityEffectSaturation::OnTick(cPawn & a_Target)
+{
+	if (a_Target.IsPlayer())
+	{
+		cPlayer & Target = (cPlayer &) a_Target;
+		Target.SetFoodSaturationLevel(Target.GetFoodSaturationLevel() + (1 + m_Intensity));  // Increase saturation 1 per tick, adds 1 for every increase in level
+	}
+}
+
+
+
+