Get lasers rendering. I've yet to proxy it off, so THIS WILL CRASH DEDICATED SERVERS

src/main/java/mekanism/api/lasers/LaserManager.java

@@ -1,13 +1,17 @@
 package mekanism.api.lasers;
 
 import mekanism.api.Coord4D;
+import mekanism.client.entity.EntityLaser;
 
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.particle.EntityNoteFX;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.MovingObjectPosition;
 import net.minecraft.util.Vec3;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
 import net.minecraftforge.common.util.ForgeDirection;
+import cpw.mods.fml.client.FMLClientHandler;
 
 public class LaserManager
 {
@@ -35,16 +39,16 @@ public class LaserManager
 				}
 			}
 
-			renderLaser(from, new Coord4D(mop.blockX, mop.blockY, mop.blockZ));
+			renderLaser(world, from, new Coord4D(mop.blockX, mop.blockY, mop.blockZ), direction);
 		}
 		else
 		{
-			renderLaser(from, to);
+			renderLaser(world, from, to, direction);
 		}
 	}
 
-	public static void renderLaser(Coord4D from, Coord4D to)
+	public static void renderLaser(World world, Coord4D from, Coord4D to, ForgeDirection direction)
 	{
-		//TODO Particle effects
+		Minecraft.getMinecraft().effectRenderer.addEffect(new EntityLaser(world, from, to, direction));
 	}
 }

src/main/java/mekanism/client/entity/EntityLaser.java

@@ -0,0 +1,91 @@
+package mekanism.client.entity;
+
+import mekanism.api.Coord4D;
+import mekanism.api.Pos3D;
+import mekanism.client.render.MekanismRenderer;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.particle.EntityFX;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.world.World;
+import net.minecraftforge.common.util.ForgeDirection;
+import cpw.mods.fml.client.FMLClientHandler;
+import org.lwjgl.opengl.GL11;
+
+public class EntityLaser extends EntityFX
+{
+	double length;
+	ForgeDirection direction;
+
+	public EntityLaser(World world, Coord4D start, Coord4D end, ForgeDirection direction)
+	{
+		super(world, (start.xCoord + end.xCoord)/2D + 0.5D, (start.yCoord + end.yCoord)/2D + 0.5D, (start.zCoord+end.zCoord)/2D + 0.5D);
+		particleMaxAge = 1;
+		particleRed = 1;
+		particleGreen = 0;
+		particleBlue = 0;
+		particleAlpha = 0.3F;
+		particleScale = 0.1F;
+		length = new Pos3D(end).distance(new Pos3D(start));
+		this.direction = direction;
+	}
+
+	@Override
+	public void renderParticle(Tessellator tessellator, float partialTick, float rotationX, float rotationXZ, float rotationZ, float rotationYZ, float rotationXY)
+	{
+		tessellator.draw();
+
+		GL11.glPushMatrix();
+		Minecraft.getMinecraft().renderEngine.bindTexture(new ResourceLocation("mekanism", "particles/laser.png"));
+
+		float newX = (float)(this.prevPosX + (this.posX - this.prevPosX) * (double)partialTick - interpPosX);
+		float newY = (float)(this.prevPosY + (this.posY - this.prevPosY) * (double)partialTick - interpPosY);
+		float newZ = (float)(this.prevPosZ + (this.posZ - this.prevPosZ) * (double)partialTick - interpPosZ);
+
+		GL11.glTranslatef(newX, newY, newZ);
+
+		switch(direction)
+		{
+			case UP:
+			case DOWN:
+			default:
+				break;
+			case WEST:
+			case EAST:
+				GL11.glRotated(90, 0, 0, 1);
+				break;
+			case NORTH:
+			case SOUTH:
+				GL11.glRotated(90, 1, 0, 0);
+				break;
+		}
+		GL11.glRotated(45, 0, 1, 0);
+		tessellator.startDrawingQuads();
+		tessellator.setColorRGBA_F(particleRed, particleGreen, particleBlue, particleAlpha);
+		tessellator.addVertexWithUV(-particleScale, -length/2, 0, 0, 0);
+		tessellator.addVertexWithUV(-particleScale, length/2, 0, 0, 1);
+		tessellator.addVertexWithUV(particleScale, length/2, 0, 1, 1);
+		tessellator.addVertexWithUV(particleScale, -length/2, 0, 1, 0);
+		tessellator.draw();
+
+		GL11.glRotated(90, 0, 1, 0);
+		tessellator.startDrawingQuads();
+		tessellator.setColorRGBA_F(particleRed, particleGreen, particleBlue, particleAlpha);
+		tessellator.addVertexWithUV(-particleScale, -length/2, 0, 0, 0);
+		tessellator.addVertexWithUV(-particleScale, length/2, 0, 0, 1);
+		tessellator.addVertexWithUV(particleScale, length/2, 0, 1, 1);
+		tessellator.addVertexWithUV(particleScale, -length/2, 0, 1, 0);
+		tessellator.draw();
+
+		GL11.glPopMatrix();
+
+		Minecraft.getMinecraft().renderEngine.bindTexture(MekanismRenderer.getBlocksTexture());
+		tessellator.startDrawingQuads();
+	}
+
+	public int getFXLayer()
+	{
+		return 1;
+	}
+}