diff options
Diffstat (limited to 'src/Items/ItemPotion.h')
| -rw-r--r-- | src/Items/ItemPotion.h | 124 |
1 files changed, 77 insertions, 47 deletions
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; } }; + + + + |