From 33cc1f2a50d870b7d264ee5479068f8eee3aa458 Mon Sep 17 00:00:00 2001 From: Tiger Wang Date: Sun, 22 Jun 2014 20:44:01 +0100 Subject: Fixed multiple issues with projectiles * Fixed arrows not being collectable/not truly hitting a block/not lodging into blocks/not going in far enough * Fixed projectiles not playing their block hit animation owning to being destroyed too quickly --- src/Entities/ProjectileEntity.cpp | 61 ++++++++++++++++++++++----------------- 1 file changed, 34 insertions(+), 27 deletions(-) (limited to 'src/Entities/ProjectileEntity.cpp') diff --git a/src/Entities/ProjectileEntity.cpp b/src/Entities/ProjectileEntity.cpp index 95c494569..d45f1d212 100644 --- a/src/Entities/ProjectileEntity.cpp +++ b/src/Entities/ProjectileEntity.cpp @@ -67,16 +67,17 @@ protected: if (cBlockInfo::IsSolid(a_BlockType)) { - // The projectile hit a solid block - // Calculate the exact hit coords: - cBoundingBox bb(a_BlockX, a_BlockX + 1, a_BlockY, a_BlockY + 1, a_BlockZ, a_BlockZ + 1); - Vector3d Line1 = m_Projectile->GetPosition(); - Vector3d Line2 = Line1 + m_Projectile->GetSpeed(); - double LineCoeff = 0; - eBlockFace Face; - if (bb.CalcLineIntersection(Line1, Line2, LineCoeff, Face)) + // The projectile hit a solid block, calculate the exact hit coords: + cBoundingBox bb(a_BlockX, a_BlockX + 1, a_BlockY, a_BlockY + 1, a_BlockZ, a_BlockZ + 1); // Bounding box of the block hit + const Vector3d LineStart = m_Projectile->GetPosition(); // Start point for the imaginary line that goes through the block hit + const Vector3d LineEnd = LineStart + m_Projectile->GetSpeed(); // End point for the imaginary line that goes through the block hit + double LineCoeff = 0; // Used to calculate where along the line an intersection with the bounding box occurs + eBlockFace Face; // Face hit + + if (bb.CalcLineIntersection(LineStart, LineEnd, LineCoeff, Face)) { - Vector3d Intersection = Line1 + m_Projectile->GetSpeed() * LineCoeff; + Vector3d Intersection = LineStart + m_Projectile->GetSpeed() * LineCoeff; // Point where projectile goes into the hit block + if (cPluginManager::Get()->CallHookProjectileHitBlock(*m_Projectile, a_BlockX, a_BlockY, a_BlockZ, Face, &Intersection)) { return false; @@ -161,7 +162,12 @@ public: return false; } - // TODO: Some entities don't interact with the projectiles (pickups, falling blocks) + if (!a_Entity->IsMob() && !a_Entity->IsMinecart() && !a_Entity->IsPlayer() && !a_Entity->IsBoat()) + { + // Not an entity that interacts with a projectile + return false; + } + if (cPluginManager::Get()->CallHookProjectileHitEntity(*m_Projectile, *a_Entity)) { // A plugin disagreed. @@ -316,8 +322,9 @@ AString cProjectileEntity::GetMCAClassName(void) const void cProjectileEntity::Tick(float a_Dt, cChunk & a_Chunk) { super::Tick(a_Dt, a_Chunk); - - if (GetProjectileKind() != pkArrow) // See cArrow::Tick + + // TODO: see BroadcastMovementUpdate; RelativeMove packet jerkiness affects projectiles too (cause of sympton described in cArrowEntity::Tick()) + if (GetProjectileKind() != pkArrow) { BroadcastMovementUpdate(); } @@ -335,19 +342,10 @@ void cProjectileEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk) return; } - Vector3d PerTickSpeed = GetSpeed() / 20; - Vector3d Pos = GetPosition(); - - // Trace the tick's worth of movement as a line: - Vector3d NextPos = Pos + PerTickSpeed; - cProjectileTracerCallback TracerCallback(this); - if (!cLineBlockTracer::Trace(*m_World, TracerCallback, Pos, NextPos)) - { - // Something has been hit, abort all other processing - return; - } - // The tracer also checks the blocks for slowdown blocks - water and lava - and stores it for later in its SlowdownCoeff - + const Vector3d PerTickSpeed = GetSpeed() / 20; + const Vector3d Pos = GetPosition(); + const Vector3d NextPos = Pos + PerTickSpeed; + // Test for entity collisions: cProjectileEntityCollisionCallback EntityCollisionCallback(this, Pos, NextPos); a_Chunk.ForEachEntity(EntityCollisionCallback); @@ -363,11 +361,20 @@ void cProjectileEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk) EntityCollisionCallback.GetHitEntity()->GetClass(), HitPos.x, HitPos.y, HitPos.z, EntityCollisionCallback.GetMinCoeff() - ); - + ); + OnHitEntity(*(EntityCollisionCallback.GetHitEntity()), HitPos); } // TODO: Test the entities in the neighboring chunks, too + + // Trace the tick's worth of movement as a line: + cProjectileTracerCallback TracerCallback(this); + if (!cLineBlockTracer::Trace(*m_World, TracerCallback, Pos, NextPos)) + { + // Something has been hit, abort all other processing + return; + } + // The tracer also checks the blocks for slowdown blocks - water and lava - and stores it for later in its SlowdownCoeff // Update the position: SetPosition(NextPos); -- cgit v1.2.3