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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "SmokeProjectile.h"
#include "Game/Camera.h"
#include "Game/GlobalUnsynced.h"
#include "Map/Ground.h"
#include "Rendering/GlobalRendering.h"
#include "Rendering/Env/Particles/ProjectileDrawer.h"
#include "Rendering/GL/RenderDataBuffer.hpp"
#include "Rendering/Textures/TextureAtlas.h"
#include "Sim/Misc/Wind.h"
#include "Sim/Projectiles/ExpGenSpawnableMemberInfo.h"
CR_BIND_DERIVED(CSmokeProjectile, CProjectile, )
CR_REG_METADATA(CSmokeProjectile,
(
CR_MEMBER_BEGINFLAG(CM_Config),
CR_MEMBER(color),
CR_MEMBER(size),
CR_MEMBER(startSize),
CR_MEMBER(sizeExpansion),
CR_MEMBER(ageSpeed),
CR_MEMBER_ENDFLAG(CM_Config),
CR_MEMBER(age),
CR_MEMBER(textureNum)
))
CSmokeProjectile::CSmokeProjectile():
color(0.5f),
age(0.0f),
ageSpeed(1.0f),
size(0.0f),
startSize(0.0f),
sizeExpansion(0.0f),
textureNum(0)
{
checkCol = false;
}
CSmokeProjectile::CSmokeProjectile(
CUnit* owner,
const float3& pos,
const float3& speed,
float ttl,
float startSize,
float sizeExpansion,
float color
):
CProjectile(pos, speed, owner, false, false, false),
color(color),
age(0),
size(0),
startSize(startSize),
sizeExpansion(sizeExpansion)
{
ageSpeed = 1.0f / ttl;
checkCol = false;
castShadow = true;
textureNum = (int) (guRNG.NextInt(projectileDrawer->NumSmokeTextures()));
useAirLos |= ((pos.y - CGround::GetApproximateHeight(pos.x, pos.z, false)) > 10.0f);
alwaysVisible |= (owner == nullptr);
}
void CSmokeProjectile::Init(const CUnit* owner, const float3& offset)
{
textureNum = (int) (guRNG.NextInt(projectileDrawer->NumSmokeTextures()));
useAirLos |= (offset.y - CGround::GetApproximateHeight(offset.x, offset.z, false) > 10.0f);
alwaysVisible |= (owner == nullptr);
CProjectile::Init(owner, offset);
}
void CSmokeProjectile::Update()
{
pos += speed;
pos += (envResHandler.GetCurrentWindVec() * age * 0.05f);
age += ageSpeed;
size += sizeExpansion;
size += ((startSize - size) * 0.2f * (size < startSize));
drawRadius = size;
age = std::min(age, 1.0f);
deleteMe |= (age >= 1.0f);
}
void CSmokeProjectile::Draw(GL::RenderDataBufferTC* va) const
{
unsigned char col[4];
unsigned char alpha = (unsigned char) ((1 - age) * 255);
col[0] = (unsigned char) (color * alpha);
col[1] = (unsigned char) (color * alpha);
col[2] = (unsigned char) (color * alpha);
col[3] = (unsigned char) alpha /* -alphaFalloff * globalRendering->timeOffset */;
const float interSize = size + (sizeExpansion * globalRendering->timeOffset);
const float3 pos1 ((camera->GetRight() - camera->GetUp()) * interSize);
const float3 pos2 ((camera->GetRight() + camera->GetUp()) * interSize);
#define st projectileDrawer->GetSmokeTexture(textureNum)
va->SafeAppend({drawPos - pos2, st->xstart, st->ystart, col});
va->SafeAppend({drawPos + pos1, st->xend, st->ystart, col});
va->SafeAppend({drawPos + pos2, st->xend, st->yend, col});
va->SafeAppend({drawPos + pos2, st->xend, st->yend, col});
va->SafeAppend({drawPos - pos1, st->xstart, st->yend, col});
va->SafeAppend({drawPos - pos2, st->xstart, st->ystart, col});
#undef st
}
bool CSmokeProjectile::GetMemberInfo(SExpGenSpawnableMemberInfo& memberInfo)
{
if (CProjectile::GetMemberInfo(memberInfo))
return true;
CHECK_MEMBER_INFO_FLOAT (CSmokeProjectile, color )
CHECK_MEMBER_INFO_FLOAT (CSmokeProjectile, size )
CHECK_MEMBER_INFO_FLOAT (CSmokeProjectile, startSize )
CHECK_MEMBER_INFO_FLOAT (CSmokeProjectile, sizeExpansion)
CHECK_MEMBER_INFO_FLOAT (CSmokeProjectile, ageSpeed )
return false;
}
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