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-rw-r--r--src/Entities/EntityEffect.cpp124
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),