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-rw-r--r--src/Items/ItemPotion.h154
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;
+ }
+};