VortexLauncherEffect.java

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package com.fs.starfarer.api.impl.combat.dweller;
 
import java.util.List;
 
import org.lwjgl.util.vector.Vector2f;
 
import com.fs.starfarer.api.Global;
import com.fs.starfarer.api.combat.BaseEveryFrameCombatPlugin;
import com.fs.starfarer.api.combat.CombatEngineAPI;
import com.fs.starfarer.api.combat.CombatEntityAPI;
import com.fs.starfarer.api.combat.CombatFleetManagerAPI;
import com.fs.starfarer.api.combat.DamagingProjectileAPI;
import com.fs.starfarer.api.combat.EveryFrameWeaponEffectPlugin;
import com.fs.starfarer.api.combat.OnFireEffectPlugin;
import com.fs.starfarer.api.combat.ShipAPI;
import com.fs.starfarer.api.combat.WeaponAPI;
import com.fs.starfarer.api.impl.combat.threat.RoilingSwarmEffect.SwarmMember;
import com.fs.starfarer.api.input.InputEventAPI;
import com.fs.starfarer.api.util.Misc;
import com.fs.starfarer.api.util.WeightedRandomPicker;
 
public class VortexLauncherEffect implements OnFireEffectPlugin, EveryFrameWeaponEffectPlugin {
 
    //public static String VORTEX_VARIANT = "shrouded_vortex_Churning";
    public static String VORTEX_WING = "shrouded_vortex_wing";
    
    public static float LAUNCH_ARC = 60f;
 
    public static class DisturbShroudPlugin extends BaseEveryFrameCombatPlugin {
        float elapsed = 0f;
        float dur;
        Vector2f dir;
        DwellerShroud shroud;
        int numMembers;
        Vector2f offset;
        CombatEntityAPI disturber;
        
        public DisturbShroudPlugin(float dur, Vector2f dir, CombatEntityAPI disturber, Vector2f offset, DwellerShroud shroud, int numMembers) {
            this.dur = dur;
            this.dir = dir;
            this.disturber = disturber;
            this.offset = offset;
            this.shroud = shroud;
            this.numMembers = numMembers;
        }
            
        @Override
        public void advance(float amount, List<InputEventAPI> events) {
            if (Global.getCombatEngine().isPaused()) return;
        
            elapsed += amount;
            if (elapsed > dur) {
                CombatEngineAPI engine = Global.getCombatEngine();
                engine.removePlugin(this);
                return;
            }
            
            Vector2f loc = Vector2f.add(shroud.getAttachedTo().getLocation(), offset, new Vector2f());
            
            Vector2f useDir = dir;
            if (disturber != null) {
                useDir = new Vector2f(disturber.getVelocity());
                useDir = Misc.normalise(useDir);
            }
            
            WeightedRandomPicker<SwarmMember> picker = shroud.getPicker(false, true, loc, 70f);
            for (int i = 0; i < numMembers; i++) {
                SwarmMember pick = picker.pickAndRemove();
                if (pick == null) break;
                float accel = ConvulsiveLungeSystemScript.PARTICLE_WINDUP_ACCEL * amount * 3f;
                accel *= 1f + (float) Math.random();
                pick.vel.x += useDir.x * accel;
                pick.vel.y += useDir.y * accel;
            }
    
        }
    }
    
    public VortexLauncherEffect() {
        
    }
    
    @Override
    public void advance(float amount, CombatEngineAPI engine, WeaponAPI weapon) {
        ShipAPI ship = weapon.getShip();
        if (ship == null) return;
 
        //weapon.setForceFireOneFrame(true);
    }
    
 
    
    public void onFire(DamagingProjectileAPI projectile, WeaponAPI weapon, CombatEngineAPI engine) {
        
        //FighterWingSpecAPI spec = Global.getSettings().getFighterWingSpec(ATTACK_SWARM_WING);
 
        CombatFleetManagerAPI manager = engine.getFleetManager(projectile.getOwner());
        manager.setSuppressDeploymentMessages(true);
        // wing has size 1, so no other members besides the "leader"
        // point is to spawn a ship but without it showing up in the deployment dialog etc
        ShipAPI vortex = manager.spawnShipOrWing(VORTEX_WING, 
                                projectile.getLocation(), projectile.getFacing(), 0f, null);
        manager.setSuppressDeploymentMessages(false);
        
        Vector2f takeoffVel = Misc.getUnitVectorAtDegreeAngle(
                projectile.getFacing() + LAUNCH_ARC/2f - (float) Math.random() * LAUNCH_ARC);
        float velMult = 1f;
        if (Misc.getAngleDiff(projectile.getFacing(), weapon.getShip().getFacing()) > 150f) {
            velMult = 0.5f;
        }
        takeoffVel.scale(vortex.getMaxSpeed() * velMult);
        
        Vector2f.add(vortex.getVelocity(), takeoffVel, vortex.getVelocity());
        
        DwellerShroud shroud = DwellerShroud.getShroudFor(vortex);
        if (shroud != null) {
            shroud.custom1 = weapon.getShip();
        }
        
        DwellerShroud sourceShroud = DwellerShroud.getShroudFor(weapon.getShip());
        if (sourceShroud != null) {
            
            Vector2f dir = Misc.getUnitVectorAtDegreeAngle(projectile.getFacing());
            Vector2f offset = Vector2f.sub(projectile.getLocation(), sourceShroud.getAttachedTo().getLocation(), new Vector2f());
            Global.getCombatEngine().addPlugin(
                    new DisturbShroudPlugin(1f, dir, vortex, offset, sourceShroud, 
                            (int) (sourceShroud.getNumMembersToMaintain() * 0.1f)));
                    //new DisturbShroudPlugin(1f, dir, offset, sourceShroud, 10));
            
        }
        
        engine.removeEntity(projectile);
    }
    
    
    
}