many things

core/src/mindustry/entities/abilities/UnitSpawnAbility.java

@@ -0,0 +1,60 @@
+package mindustry.entities.abilities;
+
+import arc.graphics.g2d.*;
+import arc.math.*;
+import arc.util.ArcAnnotate.*;
+import arc.util.*;
+import mindustry.*;
+import mindustry.content.*;
+import mindustry.entities.*;
+import mindustry.gen.*;
+import mindustry.graphics.*;
+import mindustry.type.*;
+import mindustry.ui.*;
+
+public class UnitSpawnAbility extends Ability{
+    public @NonNull UnitType type;
+    public float spawnTime = 60f, spawnX, spawnY;
+    public Effect spawnEffect = Fx.spawn;
+
+    protected float timer;
+
+    public UnitSpawnAbility(@NonNull UnitType type, float spawnTime, float spawnX, float spawnY){
+        this.type = type;
+        this.spawnTime = spawnTime;
+        this.spawnX = spawnX;
+        this.spawnY = spawnY;
+    }
+
+    public UnitSpawnAbility(){
+    }
+
+    @Override
+    public void update(Unit unit){
+        timer += Time.delta;
+
+        if(timer >= spawnTime && Units.canCreate(unit.team, type)){
+
+            float x = unit.x + Angles.trnsx(unit.rotation, spawnY, spawnX), y = unit.y + Angles.trnsy(unit.rotation, spawnY, spawnX);
+            spawnEffect.at(x, y);
+            Unit u = type.create(unit.team);
+            u.set(x, y);
+            u.rotation = unit.rotation;
+            if(!Vars.net.client()){
+                u.add();
+            }
+
+            timer = 0f;
+        }
+    }
+
+    @Override
+    public void draw(Unit unit){
+        if(Units.canCreate(unit.team, type)){
+            Draw.draw(Draw.z(), () -> {
+                float x = unit.x + Angles.trnsx(unit.rotation, spawnY, spawnX), y = unit.y + Angles.trnsy(unit.rotation, spawnY, spawnX);
+                Drawf.construct(x, y, type.icon(Cicon.full), unit.rotation - 90, timer / spawnTime, 1f, timer);
+            });
+        }
+    }
+}