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Diffstat (limited to 'src/Entities/EntityEffect.cpp')
| -rw-r--r-- | src/Entities/EntityEffect.cpp | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/Entities/EntityEffect.cpp b/src/Entities/EntityEffect.cpp index 6c4b13a58..fdcbe822e 100644 --- a/src/Entities/EntityEffect.cpp +++ b/src/Entities/EntityEffect.cpp @@ -7,6 +7,130 @@ + +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), |