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/*
* Copyright (C) 2022 NotEnoughUpdates contributors
*
* This file is part of NotEnoughUpdates.
*
* NotEnoughUpdates is free software: you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, either
* version 3 of the License, or (at your option) any later version.
*
* NotEnoughUpdates is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with NotEnoughUpdates. If not, see <https://www.gnu.org/licenses/>.
*/
package io.github.moulberry.notenoughupdates.miscgui.util;
import io.github.moulberry.notenoughupdates.core.util.lerp.LerpUtils;
import io.github.moulberry.notenoughupdates.util.Utils;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.util.ResourceLocation;
import org.lwjgl.opengl.GL11;
import org.lwjgl.util.vector.Vector2f;
import java.util.ArrayList;
import java.util.List;
import java.util.ListIterator;
import java.util.Random;
public class OrbDisplay {
private static final ResourceLocation TEXTURE = new ResourceLocation("notenoughupdates:custom_enchant_gui.png");
private static final int DEFAULT_COUNT = 30;
private final List<ExperienceOrb> experienceOrbList = new ArrayList<>();
public ExperienceOrb spawnExperienceOrb(Random random, Vector2f start, Vector2f target, int baseType) {
ExperienceOrb orb = new ExperienceOrb();
orb.position = new Vector2f(start);
orb.positionLast = new Vector2f(orb.position);
orb.velocity = new Vector2f(
random.nextFloat() * 20 - 10,
random.nextFloat() * 20 - 10
);
orb.target = new Vector2f(target);
orb.type = baseType;
orb.rotationDeg = random.nextInt(4) * 90;
float v = random.nextFloat();
if (v > 0.6) {
orb.type += 1;
}
if (v > 0.9) {
orb.type += 1;
}
experienceOrbList.add(orb);
return orb;
}
public void spawnExperienceOrbs(int startX, int startY, int targetX, int targetY, int baseType) {
spawnExperienceOrbs(new Random(),new Vector2f(startX, startY), new Vector2f(targetX, targetY), baseType, DEFAULT_COUNT);
}
public void spawnExperienceOrbs(Random random, Vector2f start, Vector2f target, int baseType, int count) {
for (int i = 0; i < count; i++) {
spawnExperienceOrb(random, start, target, baseType);
}
}
public void physicsTickOrbs() {
for (ListIterator<ExperienceOrb> it = experienceOrbList.listIterator(); it.hasNext(); ) {
ExperienceOrb orb = it.next();
Vector2f delta = Vector2f.sub(orb.target, orb.position, null);
float length = delta.length();
// Remove close Orbs
if (length < 8 && orb.velocity.lengthSquared() < 20) {
it.remove();
continue;
}
// Update velocity
Vector2f.add(orb.velocity, (Vector2f) delta.scale(2 / length), orb.velocity);
orb.velocity.scale(0.9F);
// Update position
orb.positionLast.set(orb.position);
Vector2f.add(orb.position, orb.velocity, orb.position);
}
}
public void renderOrbs(float partialTicks) {
Minecraft.getMinecraft().getTextureManager().bindTexture(TEXTURE);
GlStateManager.disableDepth();
for (ExperienceOrb orb : experienceOrbList) {
int orbX = Math.round(LerpUtils.lerp(orb.position.x, orb.positionLast.x, partialTicks));
int orbY = Math.round(LerpUtils.lerp(orb.position.y, orb.positionLast.y, partialTicks));
GlStateManager.pushMatrix();
GlStateManager.translate(orbX, orbY, 0);
GlStateManager.rotate(orb.rotationDeg, 0, 0, 1);
Vector2f delta = Vector2f.sub(orb.position, orb.target, null);
float length = delta.length();
float velocitySquared = orb.velocity.lengthSquared();
float opacity = (float) Math.sqrt(
Math.min(
1,
Math.min(2, Math.max(0.5F, length / 16))
* Math.min(2, Math.max(0.5F, velocitySquared / 40))
));
GlStateManager.color(1, 1, 1, opacity);
int orbU = (orb.type % 3) * 16;
int orbV = (orb.type / 3) * 16 + 217;
Utils.drawTexturedRect(
-8, -8, 16, 16,
orbU / 512f,
(orbU + 16) / 512f,
orbV / 512f,
(orbV + 16) / 512f,
GL11.GL_NEAREST
);
GlStateManager.popMatrix();
}
GlStateManager.enableDepth();
}
}
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