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#include "stdafx.h"
#include "ParticleEngine.h"
#include "Particle.h"
#include "Textures.h"
#include "Tesselator.h"
#include "TerrainParticle.h"
#include "Camera.h"
#include "..\Minecraft.World\net.minecraft.world.entity.player.h"
#include "..\Minecraft.World\net.minecraft.world.level.tile.h"
#include "..\Minecraft.World\net.minecraft.world.level.h"
#include "..\Minecraft.World\StringHelpers.h"
#include "..\Minecraft.World\net.minecraft.world.level.dimension.h"
ParticleEngine::ParticleEngine(Level *level, Textures *textures)
{
// if (level != NULL) // 4J - removed - we want level to be initialised to *something*
{
this->level = level;
}
this->textures = textures;
this->random = new Random();
}
ParticleEngine::~ParticleEngine()
{
delete random;
}
void ParticleEngine::add(shared_ptr<Particle> p)
{
int t = p->getParticleTexture();
int l = p->level->dimension->id == 0 ? 0 : ( p->level->dimension->id == -1 ? 1 : 2);
if ( (t != DRAGON_BREATH_TEXTURE && particles[l][t].size() >= MAX_PARTICLES_PER_LAYER) || particles[l][t].size() >= MAX_DRAGON_BREATH_PARTICLES) particles[l][t].pop_front();//particles[l][t].erase(particles[l][t].begin());
particles[l][t].push_back(p);
}
void ParticleEngine::tick()
{
for( int l = 0; l < 3; l++ )
{
for (int tt = 0; tt < TEXTURE_COUNT; tt++)
{
for (unsigned int i = 0; i < particles[l][tt].size(); i++)
{
shared_ptr<Particle> p = particles[l][tt][i];
p->tick();
if (p->removed)
{
particles[l][tt][i] = particles[l][tt].back();
particles[l][tt].pop_back();
i--;
}
}
}
}
}
void ParticleEngine::render(shared_ptr<Entity> player, float a)
{
// 4J - change brought forward from 1.2.3
float xa = Camera::xa;
float za = Camera::za;
float xa2 = Camera::xa2;
float za2 = Camera::za2;
float ya = Camera::ya;
Particle::xOff = (player->xOld + (player->x - player->xOld) * a);
Particle::yOff = (player->yOld + (player->y - player->yOld) * a);
Particle::zOff = (player->zOld + (player->z - player->zOld) * a);
int l = level->dimension->id == 0 ? 0 : ( level->dimension->id == -1 ? 1 : 2 );
for (int tt = 0; tt < TEXTURE_COUNT; tt++)
{
if(tt == ENTITY_PARTICLE_TEXTURE) continue;
if (particles[l][tt].empty()) continue;
MemSect(31);
if (tt == MISC_TEXTURE || tt == DRAGON_BREATH_TEXTURE) textures->bindTexture(TN_PARTICLES); // 4J was L"/particles.png"
if (tt == TERRAIN_TEXTURE) textures->bindTexture(TN_TERRAIN); // 4J was L"/terrain.png"
if (tt == ITEM_TEXTURE) textures->bindTexture(TN_GUI_ITEMS); // 4J was L"/gui/items.png"
MemSect(0);
Tesselator *t = Tesselator::getInstance();
glColor4f(1.0f, 1.0f, 1.0f, 1);
#if 0
// Note that these changes were brought in from java (1.5ish), but as with the java version, break rendering of the particles
// next to water - removing for now
glDepthMask(false);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glAlphaFunc(GL_GREATER, 1.0f / 255.0f);
#endif
t->begin();
for (unsigned int i = 0; i < particles[l][tt].size(); i++)
{
if(t->hasMaxVertices())
{
t->end();
t->begin();
}
shared_ptr<Particle> p = particles[l][tt][i];
if (SharedConstants::TEXTURE_LIGHTING) // 4J - change brought forward from 1.8.2
{
t->tex2(p->getLightColor(a));
}
p->render(t, a, xa, ya, za, xa2, za2);
}
t->end();
#if 0
// See comment in previous removed section
glDisable(GL_BLEND);
glDepthMask(true);
glAlphaFunc(GL_GREATER, .1f);
#endif
}
}
void ParticleEngine::renderLit(shared_ptr<Entity> player, float a)
{
// 4J - added. We call this before ParticleEngine::render in the general render per player, so if we
// don't set this here then the offsets will be from the previous player - a single frame lag for the
// java game, or totally incorrect placement of things for split screen.
Particle::xOff = (player->xOld + (player->x - player->xOld) * a);
Particle::yOff = (player->yOld + (player->y - player->yOld) * a);
Particle::zOff = (player->zOld + (player->z - player->zOld) * a);
float RAD = PI / 180;
float xa = (float) Mth::cos(player->yRot * RAD);
float za = (float) Mth::sin(player->yRot * RAD);
float xa2 = -za * (float) Mth::sin(player->xRot * RAD);
float za2 = xa * (float) Mth::sin(player->xRot * RAD);
float ya = (float) Mth::cos(player->xRot * RAD);
int l = level->dimension->id == 0 ? 0 : ( level->dimension->id == -1 ? 1 : 2 );
int tt = ENTITY_PARTICLE_TEXTURE;
if (particles[l][tt].empty()) return;
Tesselator *t = Tesselator::getInstance();
for (unsigned int i = 0; i < particles[l][tt].size(); i++)
{
shared_ptr<Particle> p = particles[l][tt][i];
if (SharedConstants::TEXTURE_LIGHTING) // 4J - change brought forward from 1.8.2
{
t->tex2(p->getLightColor(a));
}
p->render(t, a, xa, ya, za, xa2, za2);
}
}
void ParticleEngine::setLevel(Level *level)
{
this->level = level;
// 4J - we've now got a set of particle vectors for each dimension, and only clearing them when its game over & the level is set to NULL
if( level == NULL )
{
for( int l = 0; l < 3; l++ )
{
for (int tt = 0; tt < TEXTURE_COUNT; tt++)
{
particles[l][tt].clear();
}
}
}
}
void ParticleEngine::destroy(int x, int y, int z, int tid, int data)
{
if (tid == 0) return;
Tile *tile = Tile::tiles[tid];
int SD = 4;
for (int xx = 0; xx < SD; xx++)
for (int yy = 0; yy < SD; yy++)
for (int zz = 0; zz < SD; zz++)
{
double xp = x + (xx + 0.5) / SD;
double yp = y + (yy + 0.5) / SD;
double zp = z + (zz + 0.5) / SD;
int face = random->nextInt(6);
add(( shared_ptr<TerrainParticle>(new TerrainParticle(level, xp, yp, zp, xp - x - 0.5f, yp - y - 0.5f, zp - z - 0.5f, tile, face, data, textures) ) )->init(x, y, z, data));
}
}
void ParticleEngine::crack(int x, int y, int z, int face)
{
int tid = level->getTile(x, y, z);
if (tid == 0) return;
Tile *tile = Tile::tiles[tid];
float r = 0.10f;
double xp = x + random->nextDouble() * ((tile->getShapeX1() - tile->getShapeX0()) - r * 2) + r + tile->getShapeX0();
double yp = y + random->nextDouble() * ((tile->getShapeY1() - tile->getShapeY0()) - r * 2) + r + tile->getShapeY0();
double zp = z + random->nextDouble() * ((tile->getShapeZ1() - tile->getShapeZ0()) - r * 2) + r + tile->getShapeZ0();
if (face == 0) yp = y + tile->getShapeY0() - r;
if (face == 1) yp = y + tile->getShapeY1() + r;
if (face == 2) zp = z + tile->getShapeZ0() - r;
if (face == 3) zp = z + tile->getShapeZ1() + r;
if (face == 4) xp = x + tile->getShapeX0() - r;
if (face == 5) xp = x + tile->getShapeX1() + r;
add(( shared_ptr<TerrainParticle>(new TerrainParticle(level, xp, yp, zp, 0, 0, 0, tile, face, level->getData(x, y, z), textures) ) )->init(x, y, z, level->getData(x, y, z))->setPower(0.2f)->scale(0.6f));
}
wstring ParticleEngine::countParticles()
{
int l = level->dimension->id == 0 ? 0 : (level->dimension->id == -1 ? 1 : 2 );
return _toString<int>((int)(particles[l][0].size() + particles[l][1].size() + particles[l][2].size()));
}
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