ddnet/src/game/client/projectile_data.cpp

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/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
/* If you are missing that file, acquire a complete release at teeworlds.com. */
#include "projectile_data.h"
#include <base/math.h>
#include <engine/shared/snapshot.h>
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#include <game/client/prediction/gameworld.h>
#include <game/generated/protocol.h>
bool UseProjectileExtraInfo(const CNetObj_Projectile *pProj)
{
return pProj->m_VelY >= 0 && (pProj->m_VelY & PROJECTILEFLAG_IS_DDNET) != 0;
}
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CProjectileData ExtractProjectileInfo(const CNetObj_Projectile *pProj, CGameWorld *pGameWorld)
{
if(UseProjectileExtraInfo(pProj))
{
CNetObj_DDNetProjectile Proj;
mem_copy(&Proj, pProj, sizeof(Proj));
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return ExtractProjectileInfoDDNet(&Proj, pGameWorld);
}
CProjectileData Result = {vec2(0, 0)};
Result.m_StartPos.x = pProj->m_X;
Result.m_StartPos.y = pProj->m_Y;
Result.m_StartVel.x = pProj->m_VelX / 100.0f;
Result.m_StartVel.y = pProj->m_VelY / 100.0f;
Result.m_Type = pProj->m_Type;
Result.m_StartTick = pProj->m_StartTick;
Result.m_ExtraInfo = false;
Result.m_Owner = -1;
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Result.m_TuneZone = pGameWorld && pGameWorld->m_WorldConfig.m_UseTuneZones ? pGameWorld->Collision()->IsTune(pGameWorld->Collision()->GetMapIndex(Result.m_StartPos)) : 0;
return Result;
}
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CProjectileData ExtractProjectileInfoDDNet(const CNetObj_DDNetProjectile *pProj, CGameWorld *pGameWorld)
{
CProjectileData Result = {vec2(0, 0)};
Result.m_StartPos.x = pProj->m_X / 100.0f;
Result.m_StartPos.y = pProj->m_Y / 100.0f;
float Angle = pProj->m_Angle / 1000000.0f;
Result.m_StartVel.x = sin(-Angle);
Result.m_StartVel.y = cos(-Angle);
Result.m_Type = pProj->m_Type;
Result.m_StartTick = pProj->m_StartTick;
Result.m_ExtraInfo = true;
Result.m_Owner = pProj->m_Data & 255;
if((pProj->m_Data & PROJECTILEFLAG_NO_OWNER) & 1)
{
Result.m_Owner = -1;
}
// PROJECTILEFLAG_BOUNCE_HORIZONTAL, PROJECTILEFLAG_BOUNCE_VERTICAL
Result.m_Bouncing = (pProj->m_Data >> 10) & 3;
Result.m_Explosive = pProj->m_Data & PROJECTILEFLAG_EXPLOSIVE;
Result.m_Freeze = pProj->m_Data & PROJECTILEFLAG_FREEZE;
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Result.m_TuneZone = pGameWorld && pGameWorld->m_WorldConfig.m_UseTuneZones ? pGameWorld->Collision()->IsTune(pGameWorld->Collision()->GetMapIndex(Result.m_StartPos)) : 0;
return Result;
}
void SnapshotRemoveExtraProjectileInfo(unsigned char *pData)
{
CSnapshot *pSnap = (CSnapshot *)pData;
for(int Index = 0; Index < pSnap->NumItems(); Index++)
{
CSnapshotItem *pItem = pSnap->GetItem(Index);
if(pItem->Type() == NETOBJTYPE_PROJECTILE)
{
CNetObj_Projectile *pProj = (CNetObj_Projectile *)((void *)pItem->Data());
if(UseProjectileExtraInfo(pProj))
{
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CProjectileData Data = ExtractProjectileInfo(pProj, nullptr);
pProj->m_X = Data.m_StartPos.x;
pProj->m_Y = Data.m_StartPos.y;
pProj->m_VelX = (int)(Data.m_StartVel.x * 100.0f);
pProj->m_VelY = (int)(Data.m_StartVel.y * 100.0f);
}
}
}
}