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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "System/mmgr.h"
#include "SmokeProjectile.h"
#include "Game/Camera.h"
#include "Game/GlobalUnsynced.h"
#include "Map/Ground.h"
#include "Rendering/GlobalRendering.h"
#include "Rendering/ProjectileDrawer.h"
#include "Rendering/GL/VertexArray.h"
#include "Rendering/Textures/TextureAtlas.h"
#include "Sim/Misc/Wind.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_RESERVED(8)
));
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CSmokeProjectile::CSmokeProjectile()
: CProjectile(),
color(0.5f),
age(0.0f),
ageSpeed(1.0f),
size(0.0f),
startSize(0.0f),
sizeExpansion(0.0f),
textureNum(0)
{
checkCol = false;
}
void CSmokeProjectile::Init(const float3& pos, CUnit* owner)
{
textureNum = (int) (gu->usRandInt() % projectileDrawer->smoketex.size());
if (pos.y - ground->GetApproximateHeight(pos.x, pos.z, false) > 10.0f) {
useAirLos = true;
}
if (!owner) {
alwaysVisible = true;
}
CProjectile::Init(pos, owner);
}
CSmokeProjectile::CSmokeProjectile(const float3& pos, const float3& speed, float ttl, float startSize, float sizeExpansion, CUnit* owner, 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) (gu->usRandInt() % projectileDrawer->smoketex.size());
if ((pos.y - ground->GetApproximateHeight(pos.x, pos.z, false)) > 10) {
useAirLos = true;
}
if (!owner) {
alwaysVisible = true;
}
}
void CSmokeProjectile::Update()
{
pos += speed;
pos += wind.GetCurrentWind() * age * 0.05f;
age += ageSpeed;
size += sizeExpansion;
if (size < startSize) {
size+=(startSize-size) * 0.2f;
}
drawRadius = size;
if (age > 1) {
age = 1;
deleteMe = true;
}
}
void CSmokeProjectile::Draw()
{
inArray = true;
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*/;
//int frame=textureNum;
//float xmod=0.125f+(float(int(frame%6)))/16;
//float ymod=(int(frame/6))/16.0f;
const float interSize = size + (sizeExpansion * globalRendering->timeOffset);
const float3 pos1 ((camera->right - camera->up) * interSize);
const float3 pos2 ((camera->right + camera->up) * interSize);
#define st projectileDrawer->smoketex[textureNum]
va->AddVertexTC(drawPos - pos2, st->xstart, st->ystart, col);
va->AddVertexTC(drawPos + pos1, st->xend, st->ystart, col);
va->AddVertexTC(drawPos + pos2, st->xend, st->yend, col);
va->AddVertexTC(drawPos - pos1, st->xstart, st->yend, col);
#undef st
}
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