93 lines
3.6 KiB
Java
93 lines
3.6 KiB
Java
package mindustry.entities;
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import arc.graphics.*;
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import arc.math.*;
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import arc.math.geom.*;
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import arc.struct.*;
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import mindustry.content.*;
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import mindustry.entities.bullet.*;
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import mindustry.game.*;
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import mindustry.gen.*;
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import mindustry.world.*;
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import static mindustry.Vars.*;
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public class Lightning{
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private static final Rand random = new Rand();
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private static final Rect rect = new Rect();
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private static final Seq<Unitc> entities = new Seq<>();
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private static final IntSet hit = new IntSet();
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private static final int maxChain = 8;
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private static final float hitRange = 30f;
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private static boolean bhit = false;
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private static int lastSeed = 0;
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/** Create a lighting branch at a location. Use Team.derelict to damage everyone. */
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public static void create(Team team, Color color, float damage, float x, float y, float targetAngle, int length){
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createLightingInternal(null, lastSeed++, team, color, damage, x, y, targetAngle, length);
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}
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/** Create a lighting branch at a location. Uses bullet parameters. */
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public static void create(Bullet bullet, Color color, float damage, float x, float y, float targetAngle, int length){
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createLightingInternal(bullet, lastSeed++, bullet.team, color, damage, x, y, targetAngle, length);
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}
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//TODO remote method
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//@Remote(called = Loc.server, unreliable = true)
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private static void createLightingInternal(Bullet hitter, int seed, Team team, Color color, float damage, float x, float y, float rotation, int length){
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random.setSeed(seed);
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hit.clear();
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BulletType bulletType = hitter != null && !hitter.type.collidesAir ? Bullets.damageLightningGround : Bullets.damageLightning;
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Seq<Vec2> lines = new Seq<>();
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bhit = false;
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for(int i = 0; i < length / 2; i++){
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bulletType.create(null, team, x, y, 0f, damage, 1f, 1f, hitter);
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lines.add(new Vec2(x + Mathf.range(3f), y + Mathf.range(3f)));
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if(lines.size > 1){
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bhit = false;
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Vec2 from = lines.get(lines.size - 2);
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Vec2 to = lines.get(lines.size - 1);
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world.raycastEach(world.toTile(from.getX()), world.toTile(from.getY()), world.toTile(to.getX()), world.toTile(to.getY()), (wx, wy) -> {
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Tile tile = world.tile(wx, wy);
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if(tile != null && tile.block().insulated){
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bhit = true;
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//snap it instead of removing
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lines.get(lines.size -1).set(wx * tilesize, wy * tilesize);
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return true;
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}
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return false;
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});
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if(bhit) break;
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}
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rect.setSize(hitRange).setCenter(x, y);
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entities.clear();
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if(hit.size < maxChain){
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Units.nearbyEnemies(team, rect, u -> {
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if(!hit.contains(u.id()) && (hitter == null || u.checkTarget(hitter.type.collidesAir, hitter.type.collidesGround))){
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entities.add(u);
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}
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});
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}
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Unitc furthest = Geometry.findFurthest(x, y, entities);
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if(furthest != null){
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hit.add(furthest.id());
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x = furthest.x();
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y = furthest.y();
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}else{
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rotation += random.range(20f);
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x += Angles.trnsx(rotation, hitRange / 2f);
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y += Angles.trnsy(rotation, hitRange / 2f);
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}
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}
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Fx.lightning.at(x, y, rotation, color, lines);
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}
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}
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