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Minecraft.Client/HugeExplosionParticle.cpp

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+#include "stdafx.h"
+#include "HugeExplosionParticle.h"
+#include "..\Minecraft.World\Random.h"
+#include "Textures.h"
+#include "Tesselator.h"
+#include "Lighting.h"
+
+HugeExplosionParticle::HugeExplosionParticle(Textures *textures, Level *level, double x, double y, double z, double xa, double ya, double za) : Particle(level,x,y,z,0,0,0)
+{
+	life = 0;
+
+	this->textures = textures;
+	lifeTime = 6 + random->nextInt(4);
+
+	// rCol = gCol = bCol = random->nextFloat() * 0.6f + 0.4f;
+
+	unsigned int clr = Minecraft::GetInstance()->getColourTable()->getColor( eMinecraftColour_Particle_HugeExplosion );  //0x999999
+	double r = ( (clr>>16)&0xFF )/255.0f, g = ( (clr>>8)&0xFF )/255.0, b = ( clr&0xFF )/255.0;
+
+	double br = random->nextFloat() * 0.6 + 0.4;
+	rCol = r * br;
+	gCol = g * br;
+	bCol = b * br;
+	
+	size = 1 - (float) xa * 0.5f;
+}
+
+void HugeExplosionParticle::render(Tesselator *t, float a, float xa, float ya, float za, float xa2, float za2)
+{
+	int tex = (int) ((life + a) * 15 / lifeTime);
+	if (tex > 15) return;
+	textures->bindTexture(TN_MISC_EXPLOSION); // 4J was "/misc/explosion.png"
+
+	float u0 = (tex % 4) / 4.0f;
+	float u1 = u0 + 0.999f / 4.0f;
+	float v0 = (tex / 4) / 4.0f;
+	float v1 = v0 + 0.999f / 4.0f;
+
+	float r = 2.0f * size;
+
+	float x = (float) (xo + (this->x - xo) * a - xOff);
+	float y = (float) (yo + (this->y - yo) * a - yOff);
+	float z = (float) (zo + (this->z - zo) * a - zOff);
+
+	// 4J - don't render explosion particles that are less than 3 metres away, to try and avoid large particles that are causing us problems with photosensitivity testing
+	float distSq = (x*x + y*y + z*z);
+	if( distSq < ( 3.0f * 3.0f )) return;
+
+	glColor4f(1, 1, 1, 1);
+	glDisable(GL_LIGHTING);
+	Lighting::turnOff();
+	t->begin();
+	t->color(rCol, gCol, bCol, 1.0f);
+	t->normal(0, 1, 0);
+	t->tex2(0x00f0);
+	t->vertexUV(x - xa * r - xa2 * r, y - ya * r, z - za * r - za2 * r, u1, v1);
+	t->vertexUV(x - xa * r + xa2 * r, y + ya * r, z - za * r + za2 * r, u1, v0);
+	t->vertexUV(x + xa * r + xa2 * r, y + ya * r, z + za * r + za2 * r, u0, v0);
+	t->vertexUV(x + xa * r - xa2 * r, y - ya * r, z + za * r - za2 * r, u0, v1);
+	t->end();
+	glPolygonOffset(0, 0.0f);
+	glEnable(GL_LIGHTING);
+}
+
+int HugeExplosionParticle::getLightColor(float a)
+{
+	return 0xf0f0;
+}
+
+void HugeExplosionParticle::tick()
+{
+	xo = x;
+	yo = y;
+	zo = z;
+	life++;
+	if (life == lifeTime) remove();
+}
+
+int HugeExplosionParticle::getParticleTexture()
+{
+	return ParticleEngine::ENTITY_PARTICLE_TEXTURE;
+}