/* (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 <engine/demo.h>
#include <engine/graphics.h>
#include <engine/shared/config.h>

#include <game/generated/client_data.h>
#include <game/generated/protocol.h>

#include <game/mapitems.h>

#include <game/client/gameclient.h>
#include <game/client/projectile_data.h>
#include <game/client/render.h>

#include <game/client/prediction/entities/laser.h>
#include <game/client/prediction/entities/pickup.h>
#include <game/client/prediction/entities/projectile.h>

#include <game/client/components/effects.h>

#include "items.h"

void CItems::RenderProjectile(const CProjectileData *pCurrent, int ItemID)
{
	int CurWeapon = clamp(pCurrent->m_Type, 0, NUM_WEAPONS - 1);

	// get positions
	float Curvature = 0;
	float Speed = 0;
	CTuningParams Tuning = GameClient()->GetTunes(pCurrent->m_TuneZone);
	if(CurWeapon == WEAPON_GRENADE)
	{
		Curvature = Tuning.m_GrenadeCurvature;
		Speed = Tuning.m_GrenadeSpeed;
	}
	else if(CurWeapon == WEAPON_SHOTGUN)
	{
		Curvature = Tuning.m_ShotgunCurvature;
		Speed = Tuning.m_ShotgunSpeed;
	}
	else if(CurWeapon == WEAPON_GUN)
	{
		Curvature = Tuning.m_GunCurvature;
		Speed = Tuning.m_GunSpeed;
	}

	bool LocalPlayerInGame = false;

	if(m_pClient->m_Snap.m_pLocalInfo)
		LocalPlayerInGame = m_pClient->m_aClients[m_pClient->m_Snap.m_pLocalInfo->m_ClientID].m_Team != TEAM_SPECTATORS;

	static float s_LastGameTickTime = Client()->GameTickTime(g_Config.m_ClDummy);
	if(m_pClient->m_Snap.m_pGameInfoObj && !(m_pClient->m_Snap.m_pGameInfoObj->m_GameStateFlags & GAMESTATEFLAG_PAUSED))
		s_LastGameTickTime = Client()->GameTickTime(g_Config.m_ClDummy);

	bool IsOtherTeam = (pCurrent->m_ExtraInfo && pCurrent->m_Owner >= 0 && m_pClient->IsOtherTeam(pCurrent->m_Owner));

	float Ct;
	if(m_pClient->Predict() && m_pClient->AntiPingGrenade() && LocalPlayerInGame && !IsOtherTeam)
		Ct = ((float)(Client()->PredGameTick(g_Config.m_ClDummy) - 1 - pCurrent->m_StartTick) + Client()->PredIntraGameTick(g_Config.m_ClDummy)) / (float)SERVER_TICK_SPEED;
	else
		Ct = (Client()->PrevGameTick(g_Config.m_ClDummy) - pCurrent->m_StartTick) / (float)SERVER_TICK_SPEED + s_LastGameTickTime;
	if(Ct < 0)
	{
		if(Ct > -s_LastGameTickTime / 2)
		{
			// Fixup the timing which might be screwed during demo playback because
			// s_LastGameTickTime depends on the system timer, while the other part
			// (Client()->PrevGameTick(g_Config.m_ClDummy) - pCurrent->m_StartTick) / (float)SERVER_TICK_SPEED
			// is virtually constant (for projectiles fired on the current game tick):
			// (x - (x+2)) / 50 = -0.04
			//
			// We have a strict comparison for the passed time being more than the time between ticks
			// if(CurtickStart > m_Info.m_CurrentTime) in CDemoPlayer::Update()
			// so on the practice the typical value of s_LastGameTickTime varies from 0.02386 to 0.03999
			// which leads to Ct from -0.00001 to -0.01614.
			// Round up those to 0.0 to fix missing rendering of the projectile.
			Ct = 0;
		}
		else
		{
			return; // projectile haven't been shot yet
		}
	}

	vec2 Pos = CalcPos(pCurrent->m_StartPos, pCurrent->m_StartVel, Curvature, Speed, Ct);
	vec2 PrevPos = CalcPos(pCurrent->m_StartPos, pCurrent->m_StartVel, Curvature, Speed, Ct - 0.001f);

	float Alpha = 1.f;
	if(IsOtherTeam)
	{
		Alpha = g_Config.m_ClShowOthersAlpha / 100.0f;
	}

	vec2 Vel = Pos - PrevPos;

	// add particle for this projectile
	// don't check for validity of the projectile for the current weapon here, so particle effects are rendered for mod compability
	if(CurWeapon == WEAPON_GRENADE)
	{
		m_pClient->m_Effects.SmokeTrail(Pos, Vel * -1, Alpha);
		static float s_Time = 0.0f;
		static float s_LastLocalTime = LocalTime();

		if(Client()->State() == IClient::STATE_DEMOPLAYBACK)
		{
			const IDemoPlayer::CInfo *pInfo = DemoPlayer()->BaseInfo();
			if(!pInfo->m_Paused)
				s_Time += (LocalTime() - s_LastLocalTime) * pInfo->m_Speed;
		}
		else
		{
			if(m_pClient->m_Snap.m_pGameInfoObj && !(m_pClient->m_Snap.m_pGameInfoObj->m_GameStateFlags & GAMESTATEFLAG_PAUSED))
				s_Time += LocalTime() - s_LastLocalTime;
		}

		Graphics()->QuadsSetRotation(s_Time * pi * 2 * 2 + ItemID);
		s_LastLocalTime = LocalTime();
	}
	else
	{
		m_pClient->m_Effects.BulletTrail(Pos, Alpha);

		if(length(Vel) > 0.00001f)
			Graphics()->QuadsSetRotation(angle(Vel));
		else
			Graphics()->QuadsSetRotation(0);
	}

	if(GameClient()->m_GameSkin.m_aSpriteWeaponProjectiles[CurWeapon].IsValid())
	{
		Graphics()->TextureSet(GameClient()->m_GameSkin.m_aSpriteWeaponProjectiles[CurWeapon]);
		Graphics()->SetColor(1.f, 1.f, 1.f, Alpha);
		Graphics()->RenderQuadContainerAsSprite(m_ItemsQuadContainerIndex, m_aProjectileOffset[CurWeapon], Pos.x, Pos.y);
	}
}

void CItems::RenderPickup(const CNetObj_Pickup *pPrev, const CNetObj_Pickup *pCurrent, bool IsPredicted)
{
	int CurWeapon = clamp(pCurrent->m_Subtype, 0, NUM_WEAPONS - 1);
	int QuadOffset = 2;
	float Angle = 0.0f;
	float IntraTick = IsPredicted ? Client()->PredIntraGameTick(g_Config.m_ClDummy) : Client()->IntraGameTick(g_Config.m_ClDummy);
	vec2 Pos = mix(vec2(pPrev->m_X, pPrev->m_Y), vec2(pCurrent->m_X, pCurrent->m_Y), IntraTick);
	if(pCurrent->m_Type == POWERUP_HEALTH)
	{
		QuadOffset = m_PickupHealthOffset;
		Graphics()->TextureSet(GameClient()->m_GameSkin.m_SpritePickupHealth);
	}
	else if(pCurrent->m_Type == POWERUP_ARMOR)
	{
		QuadOffset = m_PickupArmorOffset;
		Graphics()->TextureSet(GameClient()->m_GameSkin.m_SpritePickupArmor);
	}
	else if(pCurrent->m_Type == POWERUP_WEAPON)
	{
		QuadOffset = m_aPickupWeaponOffset[CurWeapon];
		Graphics()->TextureSet(GameClient()->m_GameSkin.m_aSpritePickupWeapons[CurWeapon]);
	}
	else if(pCurrent->m_Type == POWERUP_NINJA)
	{
		QuadOffset = m_PickupNinjaOffset;
		m_pClient->m_Effects.PowerupShine(Pos, vec2(96, 18));
		Pos.x -= 10.0f;
		Graphics()->TextureSet(GameClient()->m_GameSkin.m_SpritePickupNinja);
	}
	else if(pCurrent->m_Type >= POWERUP_ARMOR_SHOTGUN && pCurrent->m_Type <= POWERUP_ARMOR_LASER)
	{
		QuadOffset = m_aPickupWeaponArmorOffset[pCurrent->m_Type - POWERUP_ARMOR_SHOTGUN];
		Graphics()->TextureSet(GameClient()->m_GameSkin.m_aSpritePickupWeaponArmor[pCurrent->m_Type - POWERUP_ARMOR_SHOTGUN]);
	}
	Graphics()->QuadsSetRotation(0);
	Graphics()->SetColor(1.f, 1.f, 1.f, 1.f);
	Graphics()->QuadsSetRotation(Angle);

	static float s_Time = 0.0f;
	static float s_LastLocalTime = LocalTime();
	float Offset = Pos.y / 32.0f + Pos.x / 32.0f;
	if(Client()->State() == IClient::STATE_DEMOPLAYBACK)
	{
		const IDemoPlayer::CInfo *pInfo = DemoPlayer()->BaseInfo();
		if(!pInfo->m_Paused)
			s_Time += (LocalTime() - s_LastLocalTime) * pInfo->m_Speed;
	}
	else
	{
		if(m_pClient->m_Snap.m_pGameInfoObj && !(m_pClient->m_Snap.m_pGameInfoObj->m_GameStateFlags & GAMESTATEFLAG_PAUSED))
			s_Time += LocalTime() - s_LastLocalTime;
	}
	Pos.x += cosf(s_Time * 2.0f + Offset) * 2.5f;
	Pos.y += sinf(s_Time * 2.0f + Offset) * 2.5f;
	s_LastLocalTime = LocalTime();

	Graphics()->RenderQuadContainerAsSprite(m_ItemsQuadContainerIndex, QuadOffset, Pos.x, Pos.y);
}

void CItems::RenderFlag(const CNetObj_Flag *pPrev, const CNetObj_Flag *pCurrent, const CNetObj_GameData *pPrevGameData, const CNetObj_GameData *pCurGameData)
{
	float Angle = 0.0f;
	float Size = 42.0f;

	if(pCurrent->m_Team == TEAM_RED)
		Graphics()->TextureSet(GameClient()->m_GameSkin.m_SpriteFlagRed);
	else
		Graphics()->TextureSet(GameClient()->m_GameSkin.m_SpriteFlagBlue);
	Graphics()->QuadsSetRotation(0);
	Graphics()->SetColor(1.f, 1.f, 1.f, 1.f);
	int QuadOffset;
	if(pCurrent->m_Team == TEAM_RED)
	{
		QuadOffset = m_RedFlagOffset;
	}
	else
	{
		QuadOffset = m_BlueFlagOffset;
	}

	Graphics()->QuadsSetRotation(Angle);

	vec2 Pos = mix(vec2(pPrev->m_X, pPrev->m_Y), vec2(pCurrent->m_X, pCurrent->m_Y), Client()->IntraGameTick(g_Config.m_ClDummy));

	if(pCurGameData)
	{
		int FlagCarrier = (pCurrent->m_Team == TEAM_RED) ? pCurGameData->m_FlagCarrierRed : pCurGameData->m_FlagCarrierBlue;
		// use the flagcarriers position if available
		if(FlagCarrier >= 0 && m_pClient->m_Snap.m_aCharacters[FlagCarrier].m_Active)
			Pos = m_pClient->m_aClients[FlagCarrier].m_RenderPos;

		// make sure that the flag isn't interpolated between capture and return
		if(pPrevGameData &&
			((pCurrent->m_Team == TEAM_RED && pPrevGameData->m_FlagCarrierRed != pCurGameData->m_FlagCarrierRed) ||
				(pCurrent->m_Team == TEAM_BLUE && pPrevGameData->m_FlagCarrierBlue != pCurGameData->m_FlagCarrierBlue)))
			Pos = vec2(pCurrent->m_X, pCurrent->m_Y);
	}

	Graphics()->RenderQuadContainerAsSprite(m_ItemsQuadContainerIndex, QuadOffset, Pos.x, Pos.y - Size * 0.75f);
}

void CItems::RenderLaser(const struct CNetObj_Laser *pCurrent, bool IsPredicted)
{
	ColorRGBA RGB;
	vec2 Pos = vec2(pCurrent->m_X, pCurrent->m_Y);
	vec2 From = vec2(pCurrent->m_FromX, pCurrent->m_FromY);
	float Len = distance(Pos, From);
	RGB = color_cast<ColorRGBA>(ColorHSLA(g_Config.m_ClLaserOutlineColor));
	ColorRGBA OuterColor(RGB.r, RGB.g, RGB.b, 1.0f);
	RGB = color_cast<ColorRGBA>(ColorHSLA(g_Config.m_ClLaserInnerColor));
	ColorRGBA InnerColor(RGB.r, RGB.g, RGB.b, 1.0f);

	int TuneZone = GameClient()->m_GameWorld.m_WorldConfig.m_UseTuneZones ? Collision()->IsTune(Collision()->GetMapIndex(From)) : 0;

	vec2 Dir;
	if(Len > 0)
	{
		Dir = normalize_pre_length(Pos - From, Len);

		float Ticks;
		if(IsPredicted)
			Ticks = (float)(Client()->PredGameTick(g_Config.m_ClDummy) - pCurrent->m_StartTick) + Client()->PredIntraGameTick(g_Config.m_ClDummy);
		else
			Ticks = (float)(Client()->GameTick(g_Config.m_ClDummy) - pCurrent->m_StartTick) + Client()->IntraGameTick(g_Config.m_ClDummy);
		float Ms = (Ticks / 50.0f) * 1000.0f;
		float a = Ms / m_pClient->GetTunes(TuneZone).m_LaserBounceDelay;
		a = clamp(a, 0.0f, 1.0f);
		float Ia = 1 - a;

		vec2 Out;

		Graphics()->TextureClear();
		Graphics()->QuadsBegin();

		// do outline
		Graphics()->SetColor(OuterColor.r, OuterColor.g, OuterColor.b, 1.0f);
		Out = vec2(Dir.y, -Dir.x) * (7.0f * Ia);

		IGraphics::CFreeformItem Freeform(
			From.x - Out.x, From.y - Out.y,
			From.x + Out.x, From.y + Out.y,
			Pos.x - Out.x, Pos.y - Out.y,
			Pos.x + Out.x, Pos.y + Out.y);
		Graphics()->QuadsDrawFreeform(&Freeform, 1);

		// do inner
		Out = vec2(Dir.y, -Dir.x) * (5.0f * Ia);
		Graphics()->SetColor(InnerColor.r, InnerColor.g, InnerColor.b, 1.0f); // center

		Freeform = IGraphics::CFreeformItem(
			From.x - Out.x, From.y - Out.y,
			From.x + Out.x, From.y + Out.y,
			Pos.x - Out.x, Pos.y - Out.y,
			Pos.x + Out.x, Pos.y + Out.y);
		Graphics()->QuadsDrawFreeform(&Freeform, 1);

		Graphics()->QuadsEnd();
	}

	// render head
	{
		int CurParticle = (Client()->GameTick(g_Config.m_ClDummy) % 3);
		Graphics()->TextureSet(GameClient()->m_ParticlesSkin.m_aSpriteParticleSplat[CurParticle]);
		Graphics()->QuadsSetRotation(Client()->GameTick(g_Config.m_ClDummy));
		Graphics()->SetColor(OuterColor.r, OuterColor.g, OuterColor.b, 1.0f);
		Graphics()->RenderQuadContainerAsSprite(m_ItemsQuadContainerIndex, m_aParticleSplatOffset[CurParticle], Pos.x, Pos.y);
		Graphics()->SetColor(InnerColor.r, InnerColor.g, InnerColor.b, 1.0f);
		Graphics()->RenderQuadContainerAsSprite(m_ItemsQuadContainerIndex, m_aParticleSplatOffset[CurParticle], Pos.x, Pos.y, 20.f / 24.f, 20.f / 24.f);
	}
}

void CItems::OnRender()
{
	if(Client()->State() < IClient::STATE_ONLINE)
		return;

	bool IsSuper = m_pClient->IsLocalCharSuper();
	int Ticks = Client()->GameTick(g_Config.m_ClDummy) % Client()->GameTickSpeed();
	bool BlinkingPickup = (Ticks % 22) < 4;
	bool BlinkingGun = (Ticks % 22) < 4;
	bool BlinkingDragger = (Ticks % 22) < 4;
	bool BlinkingProj = (Ticks % 20) < 2;
	bool BlinkingProjEx = (Ticks % 6) < 2;
	bool BlinkingLight = (Ticks % 6) < 2;
	int SwitcherTeam = m_pClient->SwitchStateTeam();
	int DraggerStartTick = maximum((Client()->GameTick(g_Config.m_ClDummy) / 7) * 7, Client()->GameTick(g_Config.m_ClDummy) - 4);
	int GunStartTick = (Client()->GameTick(g_Config.m_ClDummy) / 7) * 7;

	bool UsePredicted = GameClient()->Predict() && GameClient()->AntiPingGunfire();
	auto &aSwitchers = GameClient()->Switchers();
	if(UsePredicted)
	{
		for(auto *pProj = (CProjectile *)GameClient()->m_PredictedWorld.FindFirst(CGameWorld::ENTTYPE_PROJECTILE); pProj; pProj = (CProjectile *)pProj->NextEntity())
		{
			if(!IsSuper && pProj->m_Number > 0 && pProj->m_Number < (int)aSwitchers.size() && !aSwitchers[pProj->m_Number].m_aStatus[SwitcherTeam] && (pProj->m_Explosive ? BlinkingProjEx : BlinkingProj))
				continue;

			CProjectileData Data = pProj->GetData();
			RenderProjectile(&Data, pProj->GetID());
		}
		for(CEntity *pEnt = GameClient()->m_PredictedWorld.FindFirst(CGameWorld::ENTTYPE_LASER); pEnt; pEnt = pEnt->NextEntity())
		{
			auto *const pLaser = dynamic_cast<CLaser *>(pEnt);
			if(!pLaser || pLaser->GetOwner() < 0 || !GameClient()->m_aClients[pLaser->GetOwner()].m_IsPredictedLocal)
				continue;
			CNetObj_Laser Data;
			pLaser->FillInfo(&Data);
			RenderLaser(&Data, true);
		}
		for(auto *pPickup = (CPickup *)GameClient()->m_PredictedWorld.FindFirst(CGameWorld::ENTTYPE_PICKUP); pPickup; pPickup = (CPickup *)pPickup->NextEntity())
		{
			if(!IsSuper && pPickup->m_Layer == LAYER_SWITCH && pPickup->m_Number > 0 && pPickup->m_Number < (int)aSwitchers.size() && !aSwitchers[pPickup->m_Number].m_aStatus[SwitcherTeam] && BlinkingPickup)
				continue;

			if(pPickup->InDDNetTile())
			{
				if(auto *pPrev = (CPickup *)GameClient()->m_PrevPredictedWorld.GetEntity(pPickup->GetID(), CGameWorld::ENTTYPE_PICKUP))
				{
					CNetObj_Pickup Data, Prev;
					pPickup->FillInfo(&Data);
					pPrev->FillInfo(&Prev);
					RenderPickup(&Prev, &Data, true);
				}
			}
		}
	}

	for(const CSnapEntities &Ent : m_pClient->SnapEntities())
	{
		const IClient::CSnapItem Item = Ent.m_Item;
		const void *pData = Ent.m_pData;
		const CNetObj_EntityEx *pEntEx = Ent.m_pDataEx;

		bool Inactive = false;
		if(pEntEx)
			Inactive = !IsSuper && pEntEx->m_SwitchNumber > 0 && pEntEx->m_SwitchNumber < (int)aSwitchers.size() && !aSwitchers[pEntEx->m_SwitchNumber].m_aStatus[SwitcherTeam];

		if(Item.m_Type == NETOBJTYPE_PROJECTILE || Item.m_Type == NETOBJTYPE_DDNETPROJECTILE)
		{
			CProjectileData Data;
			if(Item.m_Type == NETOBJTYPE_PROJECTILE)
			{
				Data = ExtractProjectileInfo((const CNetObj_Projectile *)pData, &GameClient()->m_GameWorld);
			}
			else
			{
				Data = ExtractProjectileInfoDDNet((const CNetObj_DDNetProjectile *)pData, &GameClient()->m_GameWorld);
			}
			if(UsePredicted)
			{
				if(auto *pProj = (CProjectile *)GameClient()->m_GameWorld.FindMatch(Item.m_ID, Item.m_Type, pData))
				{
					bool IsOtherTeam = m_pClient->IsOtherTeam(pProj->GetOwner());
					if(pProj->m_LastRenderTick <= 0 && (pProj->m_Type != WEAPON_SHOTGUN || (!pProj->m_Freeze && !pProj->m_Explosive)) // skip ddrace shotgun bullets
						&& (pProj->m_Type == WEAPON_SHOTGUN || fabs(length(pProj->m_Direction) - 1.f) < 0.02f) // workaround to skip grenades on ball mod
						&& (pProj->GetOwner() < 0 || !GameClient()->m_aClients[pProj->GetOwner()].m_IsPredictedLocal || IsOtherTeam) // skip locally predicted projectiles
						&& !Client()->SnapFindItem(IClient::SNAP_PREV, Item.m_Type, Item.m_ID))
					{
						ReconstructSmokeTrail(&Data, pProj->m_DestroyTick);
					}
					pProj->m_LastRenderTick = Client()->GameTick(g_Config.m_ClDummy);
					if(!IsOtherTeam)
						continue;
				}
			}
			if(Inactive && (Data.m_Explosive ? BlinkingProjEx : BlinkingProj))
				continue;
			RenderProjectile(&Data, Item.m_ID);
		}
		else if(Item.m_Type == NETOBJTYPE_PICKUP)
		{
			if(Inactive && BlinkingPickup)
				continue;
			if(UsePredicted)
			{
				auto *pPickup = (CPickup *)GameClient()->m_GameWorld.FindMatch(Item.m_ID, Item.m_Type, pData);
				if(pPickup && pPickup->InDDNetTile())
					continue;
			}
			const void *pPrev = Client()->SnapFindItem(IClient::SNAP_PREV, Item.m_Type, Item.m_ID);
			if(pPrev)
				RenderPickup((const CNetObj_Pickup *)pPrev, (const CNetObj_Pickup *)pData);
		}
		else if(Item.m_Type == NETOBJTYPE_LASER)
		{
			if(UsePredicted)
			{
				auto *pLaser = dynamic_cast<CLaser *>(GameClient()->m_GameWorld.FindMatch(Item.m_ID, Item.m_Type, pData));
				if(pLaser && pLaser->GetOwner() >= 0 && GameClient()->m_aClients[pLaser->GetOwner()].m_IsPredictedLocal)
					continue;
			}
			CNetObj_Laser Laser = *((const CNetObj_Laser *)pData);

			if(pEntEx)
			{
				if(pEntEx->m_EntityClass == ENTITYCLASS_LIGHT)
				{
					if(Inactive && BlinkingLight)
						continue;
					Laser.m_StartTick = DraggerStartTick;
				}
				if(pEntEx->m_EntityClass >= ENTITYCLASS_GUN_NORMAL && pEntEx->m_EntityClass <= ENTITYCLASS_GUN_UNFREEZE)
				{
					if(Inactive && BlinkingGun)
						continue;
					Laser.m_StartTick = GunStartTick;
				}
				if(pEntEx->m_EntityClass >= ENTITYCLASS_DRAGGER_WEAK && pEntEx->m_EntityClass <= ENTITYCLASS_DRAGGER_STRONG)
				{
					if(Inactive && BlinkingDragger)
						continue;
					Laser.m_StartTick = DraggerStartTick;
				}
				if(pEntEx->m_EntityClass == ENTITYCLASS_DOOR)
				{
					if(Inactive || IsSuper)
					{
						Laser.m_FromX = Laser.m_X;
						Laser.m_FromY = Laser.m_Y;
					}
					Laser.m_StartTick = Client()->GameTick(g_Config.m_ClDummy);
				}
			}
			RenderLaser(&Laser);
		}
	}

	int Num = Client()->SnapNumItems(IClient::SNAP_CURRENT);

	// render flag
	for(int i = 0; i < Num; i++)
	{
		IClient::CSnapItem Item;
		const void *pData = Client()->SnapGetItem(IClient::SNAP_CURRENT, i, &Item);

		if(Item.m_Type == NETOBJTYPE_FLAG)
		{
			const void *pPrev = Client()->SnapFindItem(IClient::SNAP_PREV, Item.m_Type, Item.m_ID);
			if(pPrev)
			{
				const void *pPrevGameData = Client()->SnapFindItem(IClient::SNAP_PREV, NETOBJTYPE_GAMEDATA, m_pClient->m_Snap.m_GameDataSnapID);
				RenderFlag(static_cast<const CNetObj_Flag *>(pPrev), static_cast<const CNetObj_Flag *>(pData),
					static_cast<const CNetObj_GameData *>(pPrevGameData), m_pClient->m_Snap.m_pGameDataObj);
			}
		}
	}

	Graphics()->QuadsSetRotation(0);
	Graphics()->SetColor(1.f, 1.f, 1.f, 1.f);
}

void CItems::OnInit()
{
	Graphics()->QuadsSetRotation(0);
	Graphics()->SetColor(1.f, 1.f, 1.f, 1.f);

	m_ItemsQuadContainerIndex = Graphics()->CreateQuadContainer(false);

	Graphics()->QuadsSetSubset(0, 0, 1, 1);
	m_RedFlagOffset = RenderTools()->QuadContainerAddSprite(m_ItemsQuadContainerIndex, -21.f, -42.f, 42.f, 84.f);
	Graphics()->QuadsSetSubset(0, 0, 1, 1);
	m_BlueFlagOffset = RenderTools()->QuadContainerAddSprite(m_ItemsQuadContainerIndex, -21.f, -42.f, 42.f, 84.f);

	float ScaleX, ScaleY;
	RenderTools()->GetSpriteScale(SPRITE_PICKUP_HEALTH, ScaleX, ScaleY);
	Graphics()->QuadsSetSubset(0, 0, 1, 1);
	m_PickupHealthOffset = RenderTools()->QuadContainerAddSprite(m_ItemsQuadContainerIndex, 64.f * ScaleX, 64.f * ScaleY);
	RenderTools()->GetSpriteScale(SPRITE_PICKUP_ARMOR, ScaleX, ScaleY);
	Graphics()->QuadsSetSubset(0, 0, 1, 1);
	m_PickupArmorOffset = RenderTools()->QuadContainerAddSprite(m_ItemsQuadContainerIndex, 64.f * ScaleX, 64.f * ScaleY);

	for(int i = 0; i < NUM_WEAPONS; ++i)
	{
		RenderTools()->GetSpriteScale(g_pData->m_Weapons.m_aId[i].m_pSpriteBody, ScaleX, ScaleY);
		Graphics()->QuadsSetSubset(0, 0, 1, 1);
		m_aPickupWeaponOffset[i] = RenderTools()->QuadContainerAddSprite(m_ItemsQuadContainerIndex, g_pData->m_Weapons.m_aId[i].m_VisualSize * ScaleX, g_pData->m_Weapons.m_aId[i].m_VisualSize * ScaleY);
	}
	RenderTools()->GetSpriteScale(SPRITE_PICKUP_NINJA, ScaleX, ScaleY);
	Graphics()->QuadsSetSubset(0, 0, 1, 1);
	m_PickupNinjaOffset = RenderTools()->QuadContainerAddSprite(m_ItemsQuadContainerIndex, 128.f * ScaleX, 128.f * ScaleY);

	for(int i = 0; i < 4; i++)
	{
		RenderTools()->GetSpriteScale(SPRITE_PICKUP_ARMOR_SHOTGUN + i, ScaleX, ScaleY);
		Graphics()->QuadsSetSubset(0, 0, 1, 1);
		m_aPickupWeaponArmorOffset[i] = RenderTools()->QuadContainerAddSprite(m_ItemsQuadContainerIndex, 64.f * ScaleX, 64.f * ScaleY);
	}

	for(int &ProjectileOffset : m_aProjectileOffset)
	{
		Graphics()->QuadsSetSubset(0, 0, 1, 1);
		ProjectileOffset = RenderTools()->QuadContainerAddSprite(m_ItemsQuadContainerIndex, 32.f);
	}

	for(int &ParticleSplatOffset : m_aParticleSplatOffset)
	{
		Graphics()->QuadsSetSubset(0, 0, 1, 1);
		ParticleSplatOffset = RenderTools()->QuadContainerAddSprite(m_ItemsQuadContainerIndex, 24.f);
	}

	Graphics()->QuadContainerUpload(m_ItemsQuadContainerIndex);
}

void CItems::ReconstructSmokeTrail(const CProjectileData *pCurrent, int DestroyTick)
{
	bool LocalPlayerInGame = false;

	if(m_pClient->m_Snap.m_pLocalInfo)
		LocalPlayerInGame = m_pClient->m_aClients[m_pClient->m_Snap.m_pLocalInfo->m_ClientID].m_Team != TEAM_SPECTATORS;
	if(!m_pClient->AntiPingGunfire() || !LocalPlayerInGame)
		return;
	if(Client()->PredGameTick(g_Config.m_ClDummy) == pCurrent->m_StartTick)
		return;

	// get positions
	float Curvature = 0;
	float Speed = 0;
	CTuningParams Tuning = GameClient()->GetTunes(pCurrent->m_TuneZone);

	if(pCurrent->m_Type == WEAPON_GRENADE)
	{
		Curvature = Tuning.m_GrenadeCurvature;
		Speed = Tuning.m_GrenadeSpeed;
	}
	else if(pCurrent->m_Type == WEAPON_SHOTGUN)
	{
		Curvature = Tuning.m_ShotgunCurvature;
		Speed = Tuning.m_ShotgunSpeed;
	}
	else if(pCurrent->m_Type == WEAPON_GUN)
	{
		Curvature = Tuning.m_GunCurvature;
		Speed = Tuning.m_GunSpeed;
	}

	float Pt = ((float)(Client()->PredGameTick(g_Config.m_ClDummy) - pCurrent->m_StartTick) + Client()->PredIntraGameTick(g_Config.m_ClDummy)) / (float)SERVER_TICK_SPEED;
	if(Pt < 0)
		return; // projectile haven't been shot yet

	float Gt = (Client()->PrevGameTick(g_Config.m_ClDummy) - pCurrent->m_StartTick) / (float)SERVER_TICK_SPEED + Client()->GameTickTime(g_Config.m_ClDummy);

	float Alpha = 1.f;
	if(pCurrent->m_ExtraInfo && pCurrent->m_Owner >= 0 && m_pClient->IsOtherTeam(pCurrent->m_Owner))
	{
		Alpha = g_Config.m_ClShowOthersAlpha / 100.0f;
	}

	float T = Pt;
	if(DestroyTick >= 0)
		T = minimum(Pt, ((float)(DestroyTick - 1 - pCurrent->m_StartTick) + Client()->PredIntraGameTick(g_Config.m_ClDummy)) / (float)SERVER_TICK_SPEED);

	float MinTrailSpan = 0.4f * ((pCurrent->m_Type == WEAPON_GRENADE) ? 0.5f : 0.25f);
	float Step = maximum(Client()->FrameTimeAvg(), (pCurrent->m_Type == WEAPON_GRENADE) ? 0.02f : 0.01f);
	for(int i = 1 + (int)(Gt / Step); i < (int)(T / Step); i++)
	{
		float t = Step * (float)i + 0.4f * Step * (random_float() - 0.5f);
		vec2 Pos = CalcPos(pCurrent->m_StartPos, pCurrent->m_StartVel, Curvature, Speed, t);
		vec2 PrevPos = CalcPos(pCurrent->m_StartPos, pCurrent->m_StartVel, Curvature, Speed, t - 0.001f);
		vec2 Vel = Pos - PrevPos;
		float TimePassed = Pt - t;
		if(Pt - MinTrailSpan > 0.01f)
			TimePassed = minimum(TimePassed, (TimePassed - MinTrailSpan) / (Pt - MinTrailSpan) * (MinTrailSpan * 0.5f) + MinTrailSpan);
		// add particle for this projectile
		if(pCurrent->m_Type == WEAPON_GRENADE)
			m_pClient->m_Effects.SmokeTrail(Pos, Vel * -1, Alpha, TimePassed);
		else
			m_pClient->m_Effects.BulletTrail(Pos, Alpha, TimePassed);
	}
}
