first commit

Minecraft.Client/FootstepParticle.cpp

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+#include "stdafx.h"
+#include "FootstepParticle.h"
+#include "Textures.h"
+#include "Tesselator.h"
+#include "..\Minecraft.World\Mth.h"
+#include "..\Minecraft.World\net.minecraft.world.level.h"
+
+FootstepParticle::FootstepParticle(Textures *textures, Level *level, double x, double y, double z) : Particle(level, x, y, z, 0, 0, 0)
+{
+	// 4J added initialisers
+	life = 0;
+	lifeTime = 0;
+
+	this->textures = textures;
+	xd = yd = zd = 0;
+	lifeTime = 200;
+}
+
+void FootstepParticle::render(Tesselator *t, float a, float xa, float ya, float za, float xa2, float za2)
+{
+    float time = (life + a) / lifeTime;
+    time = time * time;
+
+    float alpha = 2 - time * 2;
+    if (alpha > 1) alpha = 1;
+    alpha = alpha * 0.2f;
+
+    glDisable(GL_LIGHTING);
+    float r = 2 / 16.0f;
+
+    float xx = (float) (x - xOff);
+    float yy = (float) (y - yOff);
+    float zz = (float) (z - zOff);
+
+    float br = level->getBrightness(Mth::floor(x), Mth::floor(y), Mth::floor(z));
+
+    textures->bindTexture(TN_MISC_FOOTSTEP);//L"/misc/footprint.png"));
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+    t->begin();
+    t->color(br, br, br, alpha);
+    t->vertexUV((float)(xx - r), (float)( yy), (float)( zz + r), (float)( 0), (float)( 1));
+    t->vertexUV((float)(xx + r), (float)( yy), (float)( zz + r), (float)( 1), (float)( 1));
+    t->vertexUV((float)(xx + r), (float)( yy), (float)( zz - r), (float)( 1), (float)( 0));
+    t->vertexUV((float)(xx - r), (float)( yy), (float)( zz - r), (float)( 0), (float)( 0));
+    t->end();
+
+    glDisable(GL_BLEND);
+    glEnable(GL_LIGHTING);
+
+}
+
+void FootstepParticle::tick()
+{
+    life++;
+    if (life == lifeTime) remove();
+}
+
+int FootstepParticle::getParticleTexture()
+{
+	return ParticleEngine::ENTITY_PARTICLE_TEXTURE;
+}