458 lines
No EOL
14 KiB
Java
458 lines
No EOL
14 KiB
Java
package resonantinduction.electrical.render;
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import static org.lwjgl.opengl.GL11.GL_BLEND;
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import static org.lwjgl.opengl.GL11.GL_ONE_MINUS_SRC_ALPHA;
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import static org.lwjgl.opengl.GL11.GL_SMOOTH;
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import static org.lwjgl.opengl.GL11.GL_SRC_ALPHA;
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import static org.lwjgl.opengl.GL11.glBlendFunc;
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import static org.lwjgl.opengl.GL11.glEnable;
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import static org.lwjgl.opengl.GL11.glShadeModel;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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import java.util.Random;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.particle.EntityFX;
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import net.minecraft.client.renderer.Tessellator;
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import net.minecraft.entity.player.EntityPlayer;
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import net.minecraft.util.ResourceLocation;
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import net.minecraft.world.World;
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import org.lwjgl.opengl.GL11;
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import resonantinduction.core.Reference;
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import universalelectricity.api.vector.Vector3;
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import cpw.mods.fml.client.FMLClientHandler;
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import cpw.mods.fml.relauncher.Side;
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import cpw.mods.fml.relauncher.SideOnly;
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/**
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* Electric shock Fxs.
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*
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* @author Calclavia
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*
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*/
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@SideOnly(Side.CLIENT)
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public class FXElectricBolt extends EntityFX
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{
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public static final ResourceLocation TEXTURE = new ResourceLocation(Reference.DOMAIN, Reference.MODEL_TEXTURE_DIRECTORY + "fadedSphere.png");
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public static final ResourceLocation PARTICLE_RESOURCE = new ResourceLocation("textures/particle/particles.png");
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/** The width of the electrical bolt. */
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private float boltWidth;
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/** The maximum length of the bolt */
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public double boltLength;
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/** Electric Bolt's start and end positions; */
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private BoltPoint start;
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private BoltPoint end;
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/** An array of the segments of the bolt. */
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private List<BoltSegment> segments = new ArrayList<BoltSegment>();
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private final Map<Integer, Integer> parentIDMap = new HashMap<Integer, Integer>();
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/** Determines how complex the bolt is. */
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public float complexity;
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public int segmentCount;
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private int maxSplitID;
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private Random rand;
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public FXElectricBolt(World world, Vector3 startVec, Vector3 targetVec, boolean doSplits)
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{
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super(world, startVec.x, startVec.y, startVec.z);
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this.rand = new Random();
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this.start = new BoltPoint(startVec);
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this.end = new BoltPoint(targetVec);
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if (this.end.y == Double.POSITIVE_INFINITY)
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{
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this.end.y = Minecraft.getMinecraft().thePlayer.posY + 30;
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}
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/** By default, we do an electrical color */
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this.segmentCount = 1;
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this.particleMaxAge = (3 + this.rand.nextInt(3) - 1);
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this.complexity = 2f;
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this.boltWidth = 0.05f;
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this.boltLength = this.start.distance(this.end);
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this.setUp(doSplits);
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}
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public FXElectricBolt(World world, Vector3 startVec, Vector3 targetVec)
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{
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this(world, startVec, targetVec, true);
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}
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/**
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* Calculate all required segments of the entire bolt.
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*/
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private void setUp(boolean doSplits)
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{
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this.segments.add(new BoltSegment(this.start, this.end));
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this.recalculate();
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if (doSplits)
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{
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double offsetRatio = this.boltLength * this.complexity;
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this.split(2, offsetRatio / 10, 0.7f, 0.1f, 20 / 2);
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this.split(2, offsetRatio / 15, 0.5f, 0.1f, 25 / 2);
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this.split(2, offsetRatio / 25, 0.5f, 0.1f, 28 / 2);
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this.split(2, offsetRatio / 38, 0.5f, 0.1f, 30 / 2);
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this.split(2, offsetRatio / 55, 0, 0, 0);
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this.split(2, offsetRatio / 70, 0, 0, 0);
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this.recalculate();
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Collections.sort(this.segments, new Comparator()
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{
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public int compare(BoltSegment bolt1, BoltSegment bolt2)
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{
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return Float.compare(bolt2.alpha, bolt1.alpha);
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}
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@Override
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public int compare(Object obj1, Object obj2)
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{
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return compare((BoltSegment) obj1, (BoltSegment) obj2);
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}
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});
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}
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}
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public FXElectricBolt setColor(float r, float g, float b)
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{
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this.particleRed = r + (this.rand.nextFloat() * 0.1f) - 0.1f;
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this.particleGreen = g + (this.rand.nextFloat() * 0.1f) - 0.1f;
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this.particleBlue = b + (this.rand.nextFloat() * 0.1f) - 0.1f;
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return this;
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}
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/**
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* Slits a large segment into multiple smaller ones.
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*
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* @param splitAmount - The amount of splits
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* @param offset - The multiplier scale for the offset.
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* @param splitChance - The chance of creating a split.
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* @param splitLength - The length of each split.
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* @param splitAngle - The angle of the split.
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*/
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public void split(int splitAmount, double offset, float splitChance, float splitLength, float splitAngle)
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{
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/** Temporarily store old segments in a new array */
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List<BoltSegment> oldSegments = this.segments;
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this.segments = new ArrayList();
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/** Previous segment */
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BoltSegment prev = null;
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for (BoltSegment segment : oldSegments)
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{
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prev = segment.prev;
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/** Length of each subsegment */
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Vector3 subSegment = segment.difference.clone().scale(1.0F / splitAmount);
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/**
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* Creates an array of new bolt points. The first and last points of the bolts are the
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* respected start and end points of the current segment.
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*/
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BoltPoint[] newPoints = new BoltPoint[splitAmount + 1];
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Vector3 startPoint = segment.start;
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newPoints[0] = segment.start;
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newPoints[splitAmount] = segment.end;
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/**
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* Create bolt points.
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*/
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for (int i = 1; i < splitAmount; i++)
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{
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Vector3 newOffset = segment.difference.getPerpendicular().rotate(this.rand.nextFloat() * 360, segment.difference).scale((this.rand.nextFloat() - 0.5F) * offset);
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Vector3 basePoint = startPoint.clone().translate(subSegment.clone().scale(i));
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newPoints[i] = new BoltPoint(basePoint, newOffset);
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}
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for (int i = 0; i < splitAmount; i++)
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{
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BoltSegment next = new BoltSegment(newPoints[i], newPoints[(i + 1)], segment.alpha, segment.id * splitAmount + i, segment.splitID);
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next.prev = prev;
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if (prev != null)
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{
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prev.next = next;
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}
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if ((i != 0) && (this.rand.nextFloat() < splitChance))
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{
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Vector3 splitrot = next.difference.xCrossProduct().rotate(this.rand.nextFloat() * 360, next.difference);
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Vector3 diff = next.difference.clone().rotate((this.rand.nextFloat() * 0.66F + 0.33F) * splitAngle, splitrot).scale(splitLength);
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this.maxSplitID += 1;
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this.parentIDMap.put(this.maxSplitID, next.splitID);
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BoltSegment split = new BoltSegment(newPoints[i], new BoltPoint(newPoints[(i + 1)].base, newPoints[(i + 1)].offset.clone().translate(diff)), segment.alpha / 2f, next.id, this.maxSplitID);
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split.prev = prev;
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this.segments.add(split);
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}
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prev = next;
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this.segments.add(next);
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}
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if (segment.next != null)
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{
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segment.next.prev = prev;
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}
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}
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this.segmentCount *= splitAmount;
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}
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private void recalculate()
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{
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HashMap<Integer, Integer> lastActiveSegment = new HashMap<Integer, Integer>();
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Collections.sort(this.segments, new Comparator()
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{
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public int compare(BoltSegment o1, BoltSegment o2)
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{
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int comp = Integer.valueOf(o1.splitID).compareTo(Integer.valueOf(o2.splitID));
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if (comp == 0)
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{
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return Integer.valueOf(o1.id).compareTo(Integer.valueOf(o2.id));
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}
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return comp;
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}
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@Override
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public int compare(Object obj, Object obj1)
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{
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return compare((BoltSegment) obj, (BoltSegment) obj1);
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}
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});
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int lastSplitCalc = 0;
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int lastActiveSeg = 0;
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for (BoltSegment segment : this.segments)
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{
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if (segment.splitID > lastSplitCalc)
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{
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lastActiveSegment.put(lastSplitCalc, lastActiveSeg);
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lastSplitCalc = segment.splitID;
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lastActiveSeg = lastActiveSegment.get(this.parentIDMap.get(segment.splitID)).intValue();
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}
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lastActiveSeg = segment.id;
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}
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lastActiveSegment.put(lastSplitCalc, lastActiveSeg);
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lastSplitCalc = 0;
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lastActiveSeg = lastActiveSegment.get(0).intValue();
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BoltSegment segment;
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for (Iterator<BoltSegment> iterator = this.segments.iterator(); iterator.hasNext(); segment.recalculate())
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{
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segment = iterator.next();
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if (lastSplitCalc != segment.splitID)
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{
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lastSplitCalc = segment.splitID;
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lastActiveSeg = lastActiveSegment.get(segment.splitID);
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}
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if (segment.id > lastActiveSeg)
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{
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iterator.remove();
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}
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}
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}
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@Override
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public void onUpdate()
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{
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this.prevPosX = this.posX;
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this.prevPosY = this.posY;
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this.prevPosZ = this.posZ;
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if (this.particleAge++ >= this.particleMaxAge)
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{
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this.setDead();
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}
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}
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@Override
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public void renderParticle(Tessellator tessellator, float partialframe, float cosYaw, float cosPitch, float sinYaw, float sinSinPitch, float cosSinPitch)
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{
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EntityPlayer player = Minecraft.getMinecraft().thePlayer;
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tessellator.draw();
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GL11.glPushMatrix();
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GL11.glDepthMask(false);
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GL11.glEnable(3042);
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glShadeModel(GL_SMOOTH);
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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FMLClientHandler.instance().getClient().renderEngine.bindTexture(TEXTURE);
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/**
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* Render the actual bolts.
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*/
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tessellator.startDrawingQuads();
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tessellator.setBrightness(15728880);
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Vector3 playerVector = new Vector3(sinYaw * -cosPitch, -cosSinPitch / cosYaw, cosYaw * cosPitch);
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int renderlength = (int) ((this.particleAge + partialframe + (int) (this.boltLength * 3.0F)) / (int) (this.boltLength * 3.0F) * this.segmentCount);
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for (BoltSegment segment : this.segments)
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{
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if (segment != null && segment.id <= renderlength)
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{
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double renderWidth = this.boltWidth * ((new Vector3(player).distance(segment.start) / 5f + 1f) * (1 + segment.alpha) * 0.5f);
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renderWidth = Math.min(this.boltWidth, Math.max(renderWidth, 0));
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if (segment.difference.getMagnitude() > 0 && segment.difference.getMagnitude() != Double.NaN && segment.difference.getMagnitude() != Double.POSITIVE_INFINITY && renderWidth > 0 && renderWidth != Double.NaN && renderWidth != Double.POSITIVE_INFINITY)
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{
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Vector3 diffPrev = playerVector.crossProduct(segment.prevDiff).scale(renderWidth / segment.sinPrev);
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Vector3 diffNext = playerVector.crossProduct(segment.nextDiff).scale(renderWidth / segment.sinNext);
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Vector3 startVec = segment.start;
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Vector3 endVec = segment.end;
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float rx1 = (float) (startVec.x - interpPosX);
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float ry1 = (float) (startVec.y - interpPosY);
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float rz1 = (float) (startVec.z - interpPosZ);
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float rx2 = (float) (endVec.x - interpPosX);
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float ry2 = (float) (endVec.y - interpPosY);
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float rz2 = (float) (endVec.z - interpPosZ);
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tessellator.setColorRGBA_F(this.particleRed, this.particleGreen, this.particleBlue, (1.0F - (this.particleAge >= 0 ? ((float) this.particleAge / (float) this.particleMaxAge) : 0.0F) * 0.6f) * segment.alpha);
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tessellator.addVertexWithUV(rx2 - diffNext.x, ry2 - diffNext.y, rz2 - diffNext.z, 0.5D, 0.0D);
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tessellator.addVertexWithUV(rx1 - diffPrev.x, ry1 - diffPrev.y, rz1 - diffPrev.z, 0.5D, 0.0D);
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tessellator.addVertexWithUV(rx1 + diffPrev.x, ry1 + diffPrev.y, rz1 + diffPrev.z, 0.5D, 1.0D);
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tessellator.addVertexWithUV(rx2 + diffNext.x, ry2 + diffNext.y, rz2 + diffNext.z, 0.5D, 1.0D);
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/**
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* Render the bolts balls.
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*/
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if (segment.next == null)
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{
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Vector3 roundEnd = segment.end.clone().translate(segment.difference.clone().normalize().scale(renderWidth));
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float rx3 = (float) (roundEnd.x - interpPosX);
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float ry3 = (float) (roundEnd.y - interpPosY);
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float rz3 = (float) (roundEnd.z - interpPosZ);
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tessellator.addVertexWithUV(rx3 - diffNext.x, ry3 - diffNext.y, rz3 - diffNext.z, 0.0D, 0.0D);
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tessellator.addVertexWithUV(rx2 - diffNext.x, ry2 - diffNext.y, rz2 - diffNext.z, 0.5D, 0.0D);
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tessellator.addVertexWithUV(rx2 + diffNext.x, ry2 + diffNext.y, rz2 + diffNext.z, 0.5D, 1.0D);
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tessellator.addVertexWithUV(rx3 + diffNext.x, ry3 + diffNext.y, rz3 + diffNext.z, 0.0D, 1.0D);
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}
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if (segment.prev == null)
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{
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Vector3 roundEnd = segment.start.clone().difference(segment.difference.clone().normalize().scale(renderWidth));
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float rx3 = (float) (roundEnd.x - interpPosX);
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float ry3 = (float) (roundEnd.y - interpPosY);
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float rz3 = (float) (roundEnd.z - interpPosZ);
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tessellator.addVertexWithUV(rx1 - diffPrev.x, ry1 - diffPrev.y, rz1 - diffPrev.z, 0.5D, 0.0D);
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tessellator.addVertexWithUV(rx3 - diffPrev.x, ry3 - diffPrev.y, rz3 - diffPrev.z, 0.0D, 0.0D);
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tessellator.addVertexWithUV(rx3 + diffPrev.x, ry3 + diffPrev.y, rz3 + diffPrev.z, 0.0D, 1.0D);
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tessellator.addVertexWithUV(rx1 + diffPrev.x, ry1 + diffPrev.y, rz1 + diffPrev.z, 0.5D, 1.0D);
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}
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}
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}
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}
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tessellator.draw();
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GL11.glDisable(3042);
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GL11.glDepthMask(true);
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GL11.glPopMatrix();
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FMLClientHandler.instance().getClient().renderEngine.bindTexture(PARTICLE_RESOURCE);
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tessellator.startDrawingQuads();
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}
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private class BoltPoint extends Vector3
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{
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public Vector3 base;
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public Vector3 offset;
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public BoltPoint(Vector3 base, Vector3 offset)
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{
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super(base.clone().translate(offset));
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this.base = base;
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this.offset = offset;
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}
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public BoltPoint(Vector3 base)
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{
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this(base, new Vector3());
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}
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}
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private class BoltSegment
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{
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public BoltPoint start;
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public BoltPoint end;
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public BoltSegment prev;
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public BoltSegment next;
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public float alpha;
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public int id;
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public int splitID;
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/**
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* All differences are cached.
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*/
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public Vector3 difference;
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public Vector3 prevDiff;
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public Vector3 nextDiff;
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public double sinPrev;
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public double sinNext;
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public BoltSegment(BoltPoint start, BoltPoint end)
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{
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this(start, end, 1, 0, 0);
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}
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public BoltSegment(BoltPoint start, BoltPoint end, float alpha, int id, int splitID)
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{
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this.start = start;
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this.end = end;
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this.alpha = alpha;
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this.id = id;
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this.splitID = splitID;
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this.difference = this.end.clone().difference(this.start);
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}
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public void recalculate()
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{
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if (this.prev != null)
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{
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Vector3 prevDiffNorm = this.prev.difference.clone().normalize();
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Vector3 diffNorm = this.difference.clone().normalize();
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this.prevDiff = diffNorm.clone().translate(prevDiffNorm).normalize();
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this.sinPrev = Math.sin(diffNorm.anglePreNorm(prevDiffNorm.clone().scale(-1)) / 2);
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}
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else
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{
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this.prevDiff = this.difference.clone().normalize();
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this.sinPrev = 1;
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}
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if (this.next != null)
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{
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Vector3 nextDiffNorm = this.next.difference.clone().normalize();
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Vector3 diffNorm = this.difference.clone().normalize();
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this.nextDiff = diffNorm.clone().translate(nextDiffNorm).normalize();
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this.sinNext = Math.sin(diffNorm.anglePreNorm(nextDiffNorm.clone().scale(-1)) / 2);
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}
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else
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{
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this.nextDiff = this.difference.clone().normalize();
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this.sinNext = 1;
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}
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}
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}
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} |