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Diffstat (limited to '')
| -rw-r--r-- | src/Items/ItemPotion.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/src/Items/ItemPotion.h b/src/Items/ItemPotion.h new file mode 100644 index 000000000..43b9f280d --- /dev/null +++ b/src/Items/ItemPotion.h @@ -0,0 +1,154 @@ + +#pragma once + +#include "../Entities/EntityEffect.h" +#include "../Entities/SplashPotionEntity.h" + +class cItemPotionHandler: + public cItemHandler +{ + typedef cItemHandler super; + + int GetPotionName(short a_ItemDamage) + { + return a_ItemDamage & 63; + } + + cEntityEffect::eType GetEntityEffectType(short a_ItemDamage) + { + // Potion effect bits are different from entity effect values + // For reference: http://minecraft.gamepedia.com/Data_values#.22Potion_effect.22_bits + switch (a_ItemDamage & 15) + { + case 1: return cEntityEffect::effRegeneration; + case 2: return cEntityEffect::effSpeed; + case 3: return cEntityEffect::effFireResistance; + case 4: return cEntityEffect::effPoison; + case 5: return cEntityEffect::effInstantHealth; + case 6: return cEntityEffect::effNightVision; + case 8: return cEntityEffect::effWeakness; + case 9: return cEntityEffect::effStrength; + case 10: return cEntityEffect::effSlowness; + case 12: return cEntityEffect::effInstantDamage; + case 13: return cEntityEffect::effWaterBreathing; + case 14: return cEntityEffect::effInvisibility; + + // No effect potions + case 0: + case 7: + case 11: + case 15: + { + break; + } + } + + return cEntityEffect::effNoEffect; + } + + short GetEntityEffectIntensity(short a_ItemDamage) + { + // Level II potion if fifth bit is set + if (a_ItemDamage & 32) return 1; + else return 0; + } + + int GetEntityEffectDuration(short a_ItemDamage) + { + // Base duration in ticks + int base = 0; + double TierCoeff = 1, ExtCoeff = 1, SplashCoeff = 1; + + switch (GetEntityEffectType(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 2, 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 is set + ExtCoeff = (a_ItemDamage & 64) ? (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; + + // 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 + + return (int)(base * TierCoeff * ExtCoeff * SplashCoeff); + } + +public: + cItemPotionHandler(): + super(E_ITEM_POTIONS) + { + } + + virtual bool IsDrinkable(short a_ItemDamage) override + { + // Drinkable potion if 13th bit is set + // For reference: http://minecraft.gamepedia.com/Potions#Data_value_table + return ((a_ItemDamage & 8192) != 0); + } + + 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 + { + Vector3d Pos = a_Player->GetThrowStartPos(); + Vector3d Speed = a_Player->GetLookVector() * 7; + + short potion_damage = a_Item.m_ItemDamage; + cSplashPotionEntity *Projectile = new cSplashPotionEntity(a_Player, Pos.x, Pos.y, Pos.z, &Speed, GetEntityEffectType(potion_damage), cEntityEffect(GetEntityEffectDuration(potion_damage), GetEntityEffectIntensity(potion_damage), a_Player), GetPotionName(potion_damage)); + if (Projectile == NULL) + { + return false; + } + if (!Projectile->Initialize(*a_World)) + { + delete Projectile; + return false; + } + + if (!a_Player->IsGameModeCreative()) + { + a_Player->GetInventory().RemoveOneEquippedItem(); + } + + // Called when potion is a splash potion + return true; + } + + virtual bool EatItem(cPlayer * a_Player, cItem * a_Item) override + { + // Called when potion is a drinkable potion + a_Player->AddEntityEffect(GetEntityEffectType(a_Item->m_ItemDamage), GetEntityEffectDuration(a_Item->m_ItemDamage), GetEntityEffectIntensity(a_Item->m_ItemDamage), a_Player); + a_Player->GetInventory().RemoveOneEquippedItem(); + a_Player->GetInventory().AddItem(E_ITEM_GLASS_BOTTLE); + return true; + } +}; |