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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "Game/Camera.h"
#include "Game/GlobalUnsynced.h"
#include "MuzzleFlame.h"
#include "Rendering/ProjectileDrawer.h"
#include "Rendering/GL/VertexArray.h"
#include "Rendering/Textures/TextureAtlas.h"
CR_BIND_DERIVED(CMuzzleFlame, CProjectile, (ZeroVector, ZeroVector, ZeroVector, 0))
CR_REG_METADATA(CMuzzleFlame,(
CR_SERIALIZER(creg_Serialize), // randSmokeDir
CR_MEMBER(size),
CR_MEMBER(age),
CR_MEMBER(numFlame),
CR_MEMBER(numSmoke),
CR_MEMBER(randSmokeDir),
CR_RESERVED(8)
))
void CMuzzleFlame::creg_Serialize(creg::ISerializer& s)
{
// s.Serialize(randSmokeDir, numSmoke*sizeof(float3));
}
CMuzzleFlame::CMuzzleFlame(const float3& pos, const float3& speed, const float3& dir, float size):
CProjectile(pos, speed, NULL, false, false, false),
size(size),
age(0)
{
this->dir = dir;
this->pos -= dir * size * 0.2f;
checkCol = false;
castShadow = true;
numFlame = 1 + (int)(size * 3);
numSmoke = 1 + (int)(size * 5);
// randSmokeDir=new float3[numSmoke];
randSmokeDir.resize(numSmoke);
for (int a = 0; a < numSmoke; ++a) {
randSmokeDir[a] = dir + gu->RandFloat() * 0.4f;
}
}
CMuzzleFlame::~CMuzzleFlame()
{
// delete[] randSmokeDir;
}
void CMuzzleFlame::Update()
{
age++;
if (age > (4 + size * 30)) {
deleteMe = true;
}
pos += speed;
}
void CMuzzleFlame::Draw()
{
inArray = true;
unsigned char col[4];
float alpha = std::max(0.0f, 1 - (age / (4 + size * 30)));
float modAge = fastmath::apxsqrt(static_cast<float>(age + 2));
va->EnlargeArrays(numSmoke * 8, 0, VA_SIZE_TC);
for (int a = 0; a < numSmoke; ++a) { //! CAUTION: loop count must match EnlargeArrays above
int tex = a % projectileDrawer->smoketex.size();
//float xmod=0.125f+(float(int(tex%6)))/16;
//float ymod=(int(tex/6))/16.0f;
float drawsize = modAge * 3;
float3 interPos(pos+randSmokeDir[a]*(a+2)*modAge*0.4f);
float fade = std::max(0.0f, std::min(1.0f, (1 - alpha) * (20 + a) * 0.1f));
col[0] = (unsigned char) (180 * alpha * fade);
col[1] = (unsigned char) (180 * alpha * fade);
col[2] = (unsigned char) (180 * alpha * fade);
col[3] = (unsigned char) (255 * alpha * fade);
#define st projectileDrawer->smoketex[tex]
va->AddVertexQTC(interPos - camera->right * drawsize - camera->up * drawsize, st->xstart, st->ystart, col);
va->AddVertexQTC(interPos + camera->right * drawsize - camera->up * drawsize, st->xend, st->ystart, col);
va->AddVertexQTC(interPos + camera->right * drawsize + camera->up * drawsize, st->xend, st->yend, col);
va->AddVertexQTC(interPos - camera->right * drawsize + camera->up * drawsize, st->xstart, st->yend, col);
#undef st
if (fade < 1.0f) {
float ifade = 1.0f - fade;
col[0] = (unsigned char) (ifade * 255);
col[1] = (unsigned char) (ifade * 255);
col[2] = (unsigned char) (ifade * 255);
col[3] = (unsigned char) (1);
#define mft projectileDrawer->muzzleflametex
va->AddVertexQTC(interPos - camera->right * drawsize - camera->up * drawsize, mft->xstart, mft->ystart, col);
va->AddVertexQTC(interPos + camera->right * drawsize - camera->up * drawsize, mft->xend, mft->ystart, col);
va->AddVertexQTC(interPos + camera->right * drawsize + camera->up * drawsize, mft->xend, mft->yend, col);
va->AddVertexQTC(interPos - camera->right * drawsize + camera->up * drawsize, mft->xstart, mft->yend, col);
#undef mft
}
}
}
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