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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "SimpleParticleSystem.h"
#include "GenericParticleProjectile.h"
#include "Game/Camera.h"
#include "Game/GlobalUnsynced.h"
#include "Rendering/GlobalRendering.h"
#include "Rendering/Env/Particles/ProjectileDrawer.h"
#include "Rendering/GL/RenderDataBuffer.hpp"
#include "Rendering/Textures/ColorMap.h"
#include "Sim/Projectiles/ExpGenSpawnableMemberInfo.h"
#include "Sim/Projectiles/ProjectileMemPool.h"
#include "System/creg/DefTypes.h"
#include "System/float3.h"
#include "System/Log/ILog.h"
#include "System/SpringMath.h"
CR_BIND_DERIVED(CSimpleParticleSystem, CProjectile, )
CR_REG_METADATA(CSimpleParticleSystem,
(
CR_MEMBER_BEGINFLAG(CM_Config),
CR_MEMBER(emitVector),
CR_MEMBER(emitMul),
CR_MEMBER(gravity),
CR_MEMBER(colorMap),
CR_MEMBER(texture),
CR_MEMBER(airdrag),
CR_MEMBER(particleLife),
CR_MEMBER(particleLifeSpread),
CR_MEMBER(numParticles),
CR_MEMBER(particleSpeed),
CR_MEMBER(particleSpeedSpread),
CR_MEMBER(particleSize),
CR_MEMBER(particleSizeSpread),
CR_MEMBER(emitRot),
CR_MEMBER(emitRotSpread),
CR_MEMBER(directional),
CR_MEMBER(sizeGrowth),
CR_MEMBER(sizeMod),
CR_MEMBER_ENDFLAG(CM_Config),
CR_MEMBER(particles)
))
CR_BIND(CSimpleParticleSystem::Particle, )
CR_REG_METADATA_SUB(CSimpleParticleSystem, Particle,
(
CR_MEMBER(pos),
CR_MEMBER(life),
CR_MEMBER(speed),
CR_MEMBER(decayrate),
CR_MEMBER(size),
CR_MEMBER(sizeGrowth),
CR_MEMBER(sizeMod)
))
CSimpleParticleSystem::CSimpleParticleSystem()
: emitVector(ZeroVector)
, emitMul(1.0f, 1.0f, 1.0f)
, gravity(ZeroVector)
, particleSpeed(0.0f)
, particleSpeedSpread(0.0f)
, emitRot(0.0f)
, emitRotSpread(0.0f)
, texture(nullptr)
, colorMap(nullptr)
, directional(false)
, particleLife(0.0f)
, particleLifeSpread(0.0f)
, particleSize(0.0f)
, particleSizeSpread(0.0f)
, airdrag(0.0f)
, sizeGrowth(0.0f)
, sizeMod(0.0f)
, numParticles(0)
{
checkCol = false;
useAirLos = true;
}
void CSimpleParticleSystem::Draw(GL::RenderDataBufferTC* va) const
{
if (directional) {
for (int i = 0; i < numParticles; i++) {
const Particle* p = &particles[i];
if (p->life >= 1.0f)
continue;
const float3 zdir = (p->pos - camera->GetPos()).SafeANormalize();
const float3 ydir = (zdir.cross(p->speed)).SafeANormalize();
const float3 xdir = (zdir.cross(ydir));
const float3 interPos = p->pos + p->speed * globalRendering->timeOffset;
const float size = p->size;
unsigned char color[4];
colorMap->GetColor(color, p->life);
if (p->speed.SqLength() > 0.001f) {
va->SafeAppend({interPos - ydir * size - xdir * size, texture->xstart, texture->ystart, color});
va->SafeAppend({interPos - ydir * size + xdir * size, texture->xend, texture->ystart, color});
va->SafeAppend({interPos + ydir * size + xdir * size, texture->xend, texture->yend, color});
va->SafeAppend({interPos + ydir * size + xdir * size, texture->xend, texture->yend, color});
va->SafeAppend({interPos + ydir * size - xdir * size, texture->xstart, texture->yend, color});
va->SafeAppend({interPos - ydir * size - xdir * size, texture->xstart, texture->ystart, color});
} else {
// in this case the particle's coor-system is degenerate
va->SafeAppend({interPos - camera->GetUp() * size - camera->GetRight() * size, texture->xstart, texture->ystart, color});
va->SafeAppend({interPos - camera->GetUp() * size + camera->GetRight() * size, texture->xend, texture->ystart, color});
va->SafeAppend({interPos + camera->GetUp() * size + camera->GetRight() * size, texture->xend, texture->yend, color});
va->SafeAppend({interPos + camera->GetUp() * size + camera->GetRight() * size, texture->xend, texture->yend, color});
va->SafeAppend({interPos + camera->GetUp() * size - camera->GetRight() * size, texture->xstart, texture->yend, color});
va->SafeAppend({interPos - camera->GetUp() * size - camera->GetRight() * size, texture->xstart, texture->ystart, color});
}
}
} else {
for (int i = 0; i < numParticles; i++) {
const Particle* p = &particles[i];
if (p->life >= 1.0f)
continue;
unsigned char color[4];
colorMap->GetColor(color, p->life);
const float3 interPos = p->pos + p->speed * globalRendering->timeOffset;
const float3 cameraRight = camera->GetRight() * p->size;
const float3 cameraUp = camera->GetUp() * p->size;
va->SafeAppend({interPos - cameraRight - cameraUp, texture->xstart, texture->ystart, color});
va->SafeAppend({interPos + cameraRight - cameraUp, texture->xend, texture->ystart, color});
va->SafeAppend({interPos + cameraRight + cameraUp, texture->xend, texture->yend, color});
va->SafeAppend({interPos + cameraRight + cameraUp, texture->xend, texture->yend, color});
va->SafeAppend({interPos - cameraRight + cameraUp, texture->xstart, texture->yend, color});
va->SafeAppend({interPos - cameraRight - cameraUp, texture->xstart, texture->ystart, color});
}
}
}
void CSimpleParticleSystem::Update()
{
deleteMe = true;
for (auto& p: particles) {
if (p.life < 1.0f) {
p.pos += p.speed;
p.speed += gravity;
p.speed *= airdrag;
p.life += p.decayrate;
p.size = p.size * sizeMod + sizeGrowth;
deleteMe = false;
}
}
}
void CSimpleParticleSystem::Init(const CUnit* owner, const float3& offset)
{
CProjectile::Init(owner, offset);
const float3 up = emitVector;
const float3 right = up.cross(float3(up.y, up.z, -up.x));
const float3 forward = up.cross(right);
// FIXME: should catch these earlier and for more projectile-types
if (colorMap == nullptr) {
colorMap = CColorMap::LoadFromFloatVector(std::vector<float>(8, 1.0f));
LOG_L(L_WARNING, "[CSimpleParticleSystem::%s] no color-map specified", __FUNCTION__);
}
if (texture == nullptr) {
texture = &projectileDrawer->textureAtlas->GetTexture("simpleparticle");
LOG_L(L_WARNING, "[CSimpleParticleSystem::%s] no texture specified", __FUNCTION__);
}
particles.resize(numParticles);
for (auto& p: particles) {
float az = guRNG.NextFloat() * math::TWOPI;
float ay = (emitRot + (emitRotSpread * guRNG.NextFloat())) * math::DEG_TO_RAD;
p.pos = offset;
p.speed = ((up * emitMul.y) * fastmath::cos(ay) - ((right * emitMul.x) * fastmath::cos(az) - (forward * emitMul.z) * fastmath::sin(az)) * fastmath::sin(ay)) * (particleSpeed + (guRNG.NextFloat() * particleSpeedSpread));
p.life = 0;
p.decayrate = 1.0f / (particleLife + (guRNG.NextFloat() * particleLifeSpread));
p.size = particleSize + guRNG.NextFloat()*particleSizeSpread;
}
drawRadius = (particleSpeed + particleSpeedSpread) * (particleLife * particleLifeSpread);
}
bool CSimpleParticleSystem::GetMemberInfo(SExpGenSpawnableMemberInfo& memberInfo)
{
if (CProjectile::GetMemberInfo(memberInfo))
return true;
CHECK_MEMBER_INFO_FLOAT3(CSimpleParticleSystem, emitVector )
CHECK_MEMBER_INFO_FLOAT3(CSimpleParticleSystem, emitMul )
CHECK_MEMBER_INFO_FLOAT3(CSimpleParticleSystem, gravity )
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, particleSpeed )
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, particleSpeedSpread)
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, emitRot )
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, emitRotSpread )
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, particleLife )
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, particleLifeSpread )
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, particleSize )
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, particleSizeSpread )
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, airdrag )
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, sizeGrowth )
CHECK_MEMBER_INFO_FLOAT (CSimpleParticleSystem, sizeMod )
CHECK_MEMBER_INFO_INT (CSimpleParticleSystem, numParticles )
CHECK_MEMBER_INFO_BOOL (CSimpleParticleSystem, directional )
CHECK_MEMBER_INFO_PTR (CSimpleParticleSystem, texture , projectileDrawer->textureAtlas->GetTexturePtr)
CHECK_MEMBER_INFO_PTR (CSimpleParticleSystem, colorMap, CColorMap::LoadFromDefString )
return false;
}
CR_BIND_DERIVED(CSphereParticleSpawner, CSimpleParticleSystem, )
CR_REG_METADATA(CSphereParticleSpawner, )
void CSphereParticleSpawner::Init(const CUnit* owner, const float3& offset)
{
const float3 up = emitVector;
const float3 right = up.cross(float3(up.y, up.z, -up.x));
const float3 forward = up.cross(right);
// FIXME: should catch these earlier and for more projectile-types
if (colorMap == nullptr) {
colorMap = CColorMap::LoadFromFloatVector(std::vector<float>(8, 1.0f));
LOG_L(L_WARNING, "[CSphereParticleSpawner::%s] no color-map specified", __FUNCTION__);
}
if (texture == nullptr) {
texture = &projectileDrawer->textureAtlas->GetTexture("sphereparticle");
LOG_L(L_WARNING, "[CSphereParticleSpawner::%s] no texture specified", __FUNCTION__);
}
for (int i = 0; i < numParticles; i++) {
const float az = guRNG.NextFloat() * math::TWOPI;
const float ay = (emitRot + emitRotSpread*guRNG.NextFloat()) * math::DEG_TO_RAD;
const float3 pspeed = ((up * emitMul.y) * std::cos(ay) - ((right * emitMul.x) * std::cos(az) - (forward * emitMul.z) * std::sin(az)) * std::sin(ay)) * (particleSpeed + (guRNG.NextFloat() * particleSpeedSpread));
CGenericParticleProjectile* particle = projMemPool.alloc<CGenericParticleProjectile>(owner, pos + offset, pspeed);
particle->decayrate = 1.0f / (particleLife + guRNG.NextFloat() * particleLifeSpread);
particle->life = 0;
particle->size = particleSize + guRNG.NextFloat() * particleSizeSpread;
particle->texture = texture;
particle->colorMap = colorMap;
particle->airdrag = airdrag;
particle->sizeGrowth = sizeGrowth;
particle->sizeMod = sizeMod;
particle->gravity = gravity;
particle->directional = directional;
particle->SetRadiusAndHeight(particle->size + sizeGrowth * particleLife, 0.0f);
}
deleteMe = true;
}
bool CSphereParticleSpawner::GetMemberInfo(SExpGenSpawnableMemberInfo& memberInfo)
{
return CSimpleParticleSystem::GetMemberInfo(memberInfo);
}
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