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-rw-r--r--src/BlockID.h3
-rw-r--r--src/Items/ItemPotion.h124
2 files changed, 79 insertions, 48 deletions
diff --git a/src/BlockID.h b/src/BlockID.h
index e3567b6fc..ba05e9e1a 100644
--- a/src/BlockID.h
+++ b/src/BlockID.h
@@ -319,7 +319,8 @@ enum ENUM_ITEM_ID
E_ITEM_GHAST_TEAR = 370,
E_ITEM_GOLD_NUGGET = 371,
E_ITEM_NETHER_WART = 372,
- E_ITEM_POTIONS = 373,
+ E_ITEM_POTION = 373,
+ E_ITEM_POTIONS = 373, // OBSOLETE, use E_ITEM_POTION instead
E_ITEM_GLASS_BOTTLE = 374,
E_ITEM_SPIDER_EYE = 375,
E_ITEM_FERMENTED_SPIDER_EYE = 376,
diff --git a/src/Items/ItemPotion.h b/src/Items/ItemPotion.h
index b72499431..f3afbf99b 100644
--- a/src/Items/ItemPotion.h
+++ b/src/Items/ItemPotion.h
@@ -9,52 +9,67 @@ class cItemPotionHandler:
{
typedef cItemHandler super;
- int GetPotionName(short a_ItemDamage)
+public:
+
+ cItemPotionHandler():
+ super(E_ITEM_POTION)
+ {
+ }
+
+
+ /** Returns the potion particle type (used by the client for visuals), based on the potion's damage value */
+ static int GetPotionParticleType(short a_ItemDamage)
{
- // First six bits (least significant)
- return a_ItemDamage & 0x3F;
+ // Lowest six bits
+ return (a_ItemDamage & 0x3f);
}
- cEntityEffect::eType GetEntityEffectType(short a_ItemDamage)
+
+ /** Translates the potion's damage value into the entity effect that the potion gives */
+ static cEntityEffect::eType GetEntityEffectType(short a_ItemDamage)
{
- // First four bits (least significant)
+ // 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 & 0xF)
+ switch (a_ItemDamage & 0x0f)
{
- case 0x1: return cEntityEffect::effRegeneration;
- case 0x2: return cEntityEffect::effSpeed;
- case 0x3: return cEntityEffect::effFireResistance;
- case 0x4: return cEntityEffect::effPoison;
- case 0x5: return cEntityEffect::effInstantHealth;
- case 0x6: return cEntityEffect::effNightVision;
- case 0x8: return cEntityEffect::effWeakness;
- case 0x9: return cEntityEffect::effStrength;
- case 0xA: return cEntityEffect::effSlowness;
- case 0xC: return cEntityEffect::effInstantDamage;
- case 0xD: return cEntityEffect::effWaterBreathing;
- case 0xE: return cEntityEffect::effInvisibility;
+ 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 0x0:
- case 0x7:
- case 0xB: // Will be potion of leaping in 1.8
- case 0xF:
+ case 0x00:
+ case 0x07:
+ case 0x0b: // Will be potion of leaping in 1.8
+ case 0x0f:
{
break;
}
}
-
return cEntityEffect::effNoEffect;
}
-
- short GetEntityEffectIntensity(short a_ItemDamage)
+
+
+ /** Retrieves the intensity level from the potion's damage value.
+ Returns 0 for level I potions, 1 for level II potions. */
+ static short GetEntityEffectIntensity(short a_ItemDamage)
{
- // Level II potion if fifth bit (from zero) is set
- return (a_ItemDamage & 0x20) ? 1 : 0;
+ // Level II potion if the fifth lowest bit is set
+ return ((a_ItemDamage & 0x20) != 0) ? 1 : 0;
}
- int GetEntityEffectDuration(short a_ItemDamage)
+
+ /** Returns the effect duration, in ticks, based on the potion's damage value */
+ static int GetEntityEffectDuration(short a_ItemDamage)
{
// Base duration in ticks
int base = 0;
@@ -88,42 +103,49 @@ class cItemPotionHandler:
}
}
- // If potion is level 2, half the duration. If not, stays the same
+ // If potion is level II, half the duration. If not, stays the same
TierCoeff = (GetEntityEffectIntensity(a_ItemDamage) > 0) ? 0.5 : 1;
// If potion is extended, multiply duration by 8/3. If not, stays the same
- // Extended potion if sixth bit (from zero) is set
- ExtCoeff = (a_ItemDamage & 0x40) ? (8.0/3.0) : 1;
+ // 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 = IsDrinkable(a_ItemDamage) ? 1 : 0.75;
+ SplashCoeff = IsPotionDrinkable(a_ItemDamage) ? 1 : 0.75;
- // For reference: 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
+ // 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);
}
-
-public:
- cItemPotionHandler():
- super(E_ITEM_POTIONS)
+
+
+ /** Returns true if the potion with the given damage is drinkable */
+ static bool 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);
}
+
+ // cItemHandler overrides:
virtual bool IsDrinkable(short a_ItemDamage) override
{
- // Drinkable potion if 13th bit (from zero) is set
- // For reference: http://minecraft.gamepedia.com/Potions#Data_value_table
- return ((a_ItemDamage & 0x2000) != 0);
+ // Drinkable potion if 13th lowest bit is set
+ // Ref.: http://minecraft.gamepedia.com/Potions#Data_value_table
+ return IsPotionDrinkable(a_ItemDamage);
}
+
virtual bool OnItemUse(cWorld * a_World, cPlayer * a_Player, const cItem & a_Item, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_Dir) override
{
short PotionDamage = a_Item.m_ItemDamage;
- // Only called when potion is a splash potion
- if (IsDrinkable(PotionDamage))
+ // Do not throw non-splash potions:
+ if (IsPotionDrinkable(PotionDamage))
{
return false;
}
@@ -131,8 +153,11 @@ public:
Vector3d Pos = a_Player->GetThrowStartPos();
Vector3d Speed = a_Player->GetLookVector() * 7;
- cSplashPotionEntity *Projectile = new cSplashPotionEntity(a_Player, Pos.x, Pos.y, Pos.z, &Speed, GetEntityEffectType(PotionDamage), cEntityEffect(GetEntityEffectDuration(PotionDamage), GetEntityEffectIntensity(PotionDamage)), GetPotionName(PotionDamage));
-
+ cSplashPotionEntity * Projectile = new cSplashPotionEntity(
+ a_Player, Pos.x, Pos.y, Pos.z, Speed,
+ GetEntityEffectType(PotionDamage), cEntityEffect(GetEntityEffectDuration(PotionDamage),
+ GetEntityEffectIntensity(PotionDamage)), GetPotionParticleType(PotionDamage)
+ );
if (Projectile == NULL)
{
return false;
@@ -151,11 +176,12 @@ public:
return true;
}
+
virtual bool EatItem(cPlayer * a_Player, cItem * a_Item) override
{
short PotionDamage = a_Item->m_ItemDamage;
- // Only called when potion is a drinkable potion
+ // Do not drink undrinkable potions:
if (!IsDrinkable(a_Item->m_ItemDamage))
{
return false;
@@ -167,3 +193,7 @@ public:
return true;
}
};
+
+
+
+