Long-range 4x4 turret (wip) / Java 14 language upgrade

core/src/mindustry/entities/bullet/BulletType.java

@@ -71,6 +71,9 @@ public abstract class BulletType extends Content{
     public boolean hittable = true;
     /** Whether this bullet can be reflected. */
     public boolean reflectable = true;
+    /** Whether to move the bullet back depending on delta to fix some delta-time realted issues.
+     * Do not change unless you know what you're doing. */
+    public boolean backMove = true;
     /** Bullet range override. */
     public float range = -1f;
 
@@ -212,7 +215,7 @@ public abstract class BulletType extends Content{
         }
 
         if(instantDisappear){
-            b.time(lifetime);
+            b.time = lifetime;
         }
     }
 
@@ -274,7 +277,11 @@ public abstract class BulletType extends Content{
         bullet.owner = owner;
         bullet.team = team;
         bullet.vel.trns(angle, speed * velocityScl);
-        bullet.set(x - bullet.vel.x * Time.delta, y - bullet.vel.y * Time.delta);
+        if(backMove){
+            bullet.set(x - bullet.vel.x * Time.delta, y - bullet.vel.y * Time.delta);
+        }else{
+            bullet.set(x, y);
+        }
         bullet.lifetime = lifetime * lifetimeScl;
         bullet.data = data;
         bullet.drag = drag;

core/src/mindustry/entities/bullet/PointBulletType.java

@@ -0,0 +1,70 @@
+package mindustry.entities.bullet;
+
+import arc.math.geom.*;
+import arc.util.*;
+import mindustry.*;
+import mindustry.entities.*;
+import mindustry.gen.*;
+
+public class PointBulletType extends BulletType{
+     private static float cdist = 0f;
+     private static Unit result;
+
+     public float trailSpacing = 10f;
+
+     public PointBulletType(){
+         scaleVelocity = true;
+         lifetime = 100f;
+         collides = false;
+         keepVelocity = false;
+         backMove = false;
+     }
+
+    @Override
+    public void init(Bullet b){
+        super.init(b);
+
+        float px = b.x + b.lifetime * b.vel.x,
+            py = b.y + b.lifetime * b.vel.y,
+            rot = b.rotation();
+
+        Geometry.iterateLine(0f, b.x, b.y, px, py, trailSpacing, (x, y) -> {
+            trailEffect.at(x, y, rot);
+        });
+
+        b.time = b.lifetime;
+        b.set(px, py);
+
+        //calculate hit entity
+
+        cdist = 0f;
+        result = null;
+        float range = 1f;
+
+        Units.nearbyEnemies(b.team, px - range, py - range, range*2f, range*2f, e -> {
+            if(e.dead()) return;
+
+            e.hitbox(Tmp.r1);
+            if(!Tmp.r1.contains(px, py)) return;
+
+            float dst = e.dst(px, py) - e.hitSize;
+            if((result == null || dst < cdist)){
+                result = e;
+                cdist = dst;
+            }
+        });
+
+        if(result != null){
+            b.collision(result, px, py);
+        }else{
+            Building build = Vars.world.buildWorld(px, py);
+            if(build != null && build.team != b.team){
+                build.collision(b);
+            }
+        }
+
+        b.remove();
+
+        b.vel.setZero();
+    }
+}