Tank animations & FX

annotations/src/main/java/mindustry/annotations/entity/EntityProcess.java

@@ -800,12 +800,12 @@ public class EntityProcess extends BaseProcessor{
                     }
                 }
 
-                write(def.builder, imports.asArray());
+                write(def.builder, imports.toSeq());
             }
 
             //write base classes last
             for(TypeSpec.Builder b : baseClasses){
-                write(b, imports.asArray());
+                write(b, imports.toSeq());
             }
 
             //TODO nulls were an awful idea
@@ -878,7 +878,7 @@ public class EntityProcess extends BaseProcessor{
 
                 nullsBuilder.addField(FieldSpec.builder(type, Strings.camelize(baseName)).initializer("new " + className + "()").addModifiers(Modifier.FINAL, Modifier.STATIC, Modifier.PUBLIC).build());
 
-                write(nullBuilder, imports.asArray());
+                write(nullBuilder, imports.toSeq());
             }
 
             write(nullsBuilder);
@@ -934,7 +934,7 @@ public class EntityProcess extends BaseProcessor{
                 out.addAll(getDependencies(comp));
             }
 
-            defComponents.put(type, out.asArray());
+            defComponents.put(type, out.toSeq());
         }
 
         return defComponents.get(type);
@@ -961,7 +961,7 @@ public class EntityProcess extends BaseProcessor{
 
             //remove it again just in case
             out.remove(component);
-            componentDependencies.put(component, result.asArray());
+            componentDependencies.put(component, result.toSeq());
         }
 
         return componentDependencies.get(component);

core/src/mindustry/content/Fx.java

@@ -21,8 +21,8 @@ import static arc.math.Angles.*;
 import static mindustry.Vars.*;
 
 public class Fx{
-    private static final Rand rand = new Rand();
-    private static final Vec2 v = new Vec2();
+    public static final Rand rand = new Rand();
+    public static final Vec2 v = new Vec2();
 
     public static final Effect
 
@@ -310,11 +310,19 @@ public class Fx{
 
     unitLand = new Effect(30, e -> {
         color(Tmp.c1.set(e.color).mul(1.1f));
+        //TODO doesn't respect rotation / size
         randLenVectors(e.id, 6, 17f * e.finpow(), (x, y) -> {
             Fill.circle(e.x + x, e.y + y, e.fout() * 4f + 0.3f);
         });
     }).layer(Layer.debris),
 
+    unitDust = new Effect(30, e -> {
+        color(Tmp.c1.set(e.color).mul(1.3f));
+        randLenVectors(e.id, 3, 8f * e.finpow(), e.rotation, 30f, (x, y) -> {
+            Fill.circle(e.x + x, e.y + y, e.fout() * 3f + 0.3f);
+        });
+    }).layer(Layer.debris),
+
     unitLandSmall = new Effect(30, e -> {
         color(Tmp.c1.set(e.color).mul(1.1f));
         randLenVectors(e.id, (int)(6 * e.rotation), 12f * e.finpow() * e.rotation, (x, y) -> {

core/src/mindustry/content/UnitTypes.java

@@ -2429,6 +2429,10 @@ public class UnitTypes{
 
         vanquish = new TankUnitType("vanquish"){{
             hitSize = 28f;
+            speed = 0.6f;
+            health = 10000;
+            armor = 20f;
+            treadRect = new Rect(22f, 16f, 28f, 130f);
         }};
 
         //endregion

core/src/mindustry/entities/Effect.java

@@ -166,6 +166,22 @@ public class Effect{
         shake(intensity, duration, loc.getX(), loc.getY());
     }
 
+    public static void floorDust(float x, float y, float size){
+        Tile tile = world.tileWorld(x, y);
+        if(tile != null){
+            Color color = tile.floor().mapColor;
+            Fx.unitLand.at(x, y, size, color);
+        }
+    }
+
+    public static void floorDustAngle(Effect effect, float x, float y, float angle){
+        Tile tile = world.tileWorld(x, y);
+        if(tile != null){
+            Color color = tile.floor().mapColor;
+            effect.at(x, y, angle, color);
+        }
+    }
+
     public static void create(Effect effect, float x, float y, float rotation, Color color, Object data){
         if(headless || effect == Fx.none || !Core.settings.getBool("effects")) return;
 

core/src/mindustry/entities/EntityCollisions.java

@@ -119,7 +119,7 @@ public class EntityCollisions{
 
     @SuppressWarnings("unchecked")
     public <T extends Hitboxc> void updatePhysics(EntityGroup<T> group){
-        QuadTree tree = group.tree();
+        var tree = group.tree();
         tree.clear();
 
         group.each(s -> {

core/src/mindustry/entities/comp/MechComp.java

@@ -1,15 +1,12 @@
 package mindustry.entities.comp;
 
-import arc.graphics.*;
 import arc.math.*;
 import arc.math.geom.*;
 import arc.util.*;
 import mindustry.annotations.Annotations.*;
-import mindustry.content.*;
 import mindustry.entities.*;
 import mindustry.gen.*;
 import mindustry.type.*;
-import mindustry.world.*;
 import mindustry.world.blocks.environment.*;
 
 import static mindustry.Vars.*;
@@ -52,11 +49,7 @@ abstract class MechComp implements Posc, Flyingc, Hitboxc, Unitc, Mechc, Elevati
             }
 
             if(type.mechStepParticles){
-                Tile tile = world.tileWorld(cx, cy);
-                if(tile != null){
-                    Color color = tile.floor().mapColor;
-                    Fx.unitLand.at(cx, cy, hitSize/8f, color);
-                }
+                Effect.floorDust(cx, cy, hitSize/8f);
             }
         }
 

core/src/mindustry/entities/comp/TankComp.java

@@ -1,8 +1,10 @@
 package mindustry.entities.comp;
 
+import arc.math.*;
 import arc.math.geom.*;
 import arc.util.*;
 import mindustry.annotations.Annotations.*;
+import mindustry.entities.*;
 import mindustry.gen.*;
 import mindustry.type.*;
 import mindustry.world.blocks.environment.*;
@@ -11,14 +13,36 @@ import static mindustry.Vars.*;
 
 @Component
 abstract class TankComp implements Posc, Flyingc, Hitboxc, Unitc, ElevationMovec{
-    @Import float x, y, hitSize;
+    @Import float x, y, hitSize, rotation;
     @Import UnitType type;
 
+    transient private float treadEffectTime;
+
     transient float treadTime;
     transient boolean walked;
 
     @Override
     public void update(){
+        //dust
+        if(walked && !headless){
+            treadEffectTime += Time.delta;
+            if(treadEffectTime >= 6f){
+                var treadRegion = type.treadRegion;
+                var treadRect = type.treadRect;
+
+                float xOffset = (treadRegion.width/2f - (treadRect.x + treadRect.width/2f)) / 4f;
+                float yOffset = (treadRegion.height/2f - (treadRect.y + treadRect.height/2f)) / 4f;
+
+                for(int i : Mathf.signs){
+                    Tmp.v1.set(xOffset * i, yOffset - treadRect.height / 2f / 4f).rotate(rotation - 90);
+
+                    Effect.floorDustAngle(type.treadEffect, Tmp.v1.x + x, Tmp.v1.y + y, rotation + 180f);
+                }
+
+                treadEffectTime = 0f;
+            }
+        }
+
         //trigger animation only when walking manually
         if(walked || net.client()){
             float len = deltaLen();

core/src/mindustry/type/UnitType.java

@@ -34,6 +34,7 @@ import mindustry.world.blocks.units.*;
 import mindustry.world.consumers.*;
 import mindustry.world.meta.*;
 
+import static arc.graphics.g2d.Draw.*;
 import static mindustry.Vars.*;
 
 //TODO document
@@ -92,6 +93,7 @@ public class UnitType extends UnlockableContent{
     public Effect fallEffect = Fx.fallSmoke;
     public Effect fallThrusterEffect = Fx.fallSmoke;
     public Effect deathExplosionEffect = Fx.dynamicExplosion;
+    public @Nullable Effect treadEffect;
     /** Additional sprites that are drawn with the unit. */
     public Seq<UnitDecal> decals = new Seq<>();
     public Seq<Ability> abilities = new Seq<>();
@@ -117,6 +119,9 @@ public class UnitType extends UnlockableContent{
     public boolean mechStepParticles = false;
     public Color mechLegColor = Pal.darkMetal;
 
+    public Rect treadRect = new Rect();
+    public int treadFrames = 18;
+
     public int itemCapacity = -1;
     public int ammoCapacity = -1;
     public AmmoType ammoType = new ItemAmmoType(Items.copper);
@@ -166,8 +171,7 @@ public class UnitType extends UnlockableContent{
     public Seq<Weapon> weapons = new Seq<>();
     public TextureRegion baseRegion, legRegion, region, shadowRegion, cellRegion,
         softShadowRegion, jointRegion, footRegion, legBaseRegion, baseJointRegion, outlineRegion, treadRegion;
-    public TextureRegion[] wreckRegions;
-    public TextureRegion[] segmentRegions, segmentOutlineRegions;
+    public TextureRegion[] wreckRegions, segmentRegions, segmentOutlineRegions, treadRegions;
 
     protected float buildTime = -1f;
     protected @Nullable ItemStack[] totalRequirements, cachedRequirements, firstRequirements;
@@ -437,6 +441,17 @@ public class UnitType extends UnlockableContent{
             mechStepParticles = hitSize > 15f;
         }
 
+        if(treadEffect == null){
+            treadEffect = new Effect(45, e -> {
+                color(Tmp.c1.set(e.color).mul(1.5f));
+                Fx.rand.setSeed(e.id);
+                for(int i = 0; i < 3; i++){
+                    Fx.v.trns(e.rotation + Fx.rand.range(40f), Fx.rand.random(6f * e.finpow()));
+                    Fill.circle(e.x + Fx.v.x + Fx.rand.range(3f), e.y + Fx.v.y + Fx.rand.range(3f), e.fout() * hitSize / 28f * 3f * Fx.rand.random(0.8f, 1.1f) + 0.3f);
+                }
+            }).layer(Layer.debris);
+        }
+
         canHeal = weapons.contains(w -> w.bullet.healPercent > 0f);
 
         //add mirrored weapon variants
@@ -498,6 +513,12 @@ public class UnitType extends UnlockableContent{
         baseJointRegion = Core.atlas.find(name + "-joint-base");
         footRegion = Core.atlas.find(name + "-foot");
         treadRegion = Core.atlas.find(name + "-treads");
+        if(treadRegion.found()){
+            treadRegions = new TextureRegion[treadFrames];
+            for(int i = 0; i < treadFrames; i++){
+                treadRegions[i] = Core.atlas.find(name + "-treads" + i);
+            }
+        }
         legBaseRegion = Core.atlas.find(name + "-leg-base", name + "-leg");
         baseRegion = Core.atlas.find(name + "-base");
         cellRegion = Core.atlas.find(name + "-cell", Core.atlas.find("power-cell"));
@@ -963,6 +984,18 @@ public class UnitType extends UnlockableContent{
 
     public <T extends Unit & Tankc> void drawTank(T unit){
         Draw.rect(treadRegion, unit.x, unit.y, unit.rotation - 90);
+
+        if(treadRegion.found()){
+            int frame = (int)(unit.treadTime()) % treadFrames;
+            var region = treadRegions[frame];
+            float xOffset = treadRegion.width/2f - (treadRect.x + treadRect.width/2f);
+            float yOffset = treadRegion.height/2f - (treadRect.y + treadRect.height/2f);
+
+            for(int i : Mathf.signs){
+                Tmp.v1.set(xOffset * i, yOffset).rotate(unit.rotation - 90);
+                Draw.rect(region, unit.x + Tmp.v1.x / 4f, unit.y + Tmp.v1.y / 4f, treadRect.width / 4f, region.height / 4f, unit.rotation - 90);
+            }
+        }
     }
 
     public <T extends Unit & Legsc> void drawLegs(T unit){

tools/src/mindustry/tools/Generators.java

@@ -509,6 +509,28 @@ public class Generators{
                     }
                 }
 
+                //generate tank animation
+                if(sample instanceof Tankc){
+                    Pixmap pix = get(type.treadRegion);
+                    //slice is always 1 pixel wide
+                    Pixmap slice = pix.crop((int)type.treadRect.x, (int)type.treadRect.y, 1, (int)type.treadRect.height);
+                    int frames = type.treadFrames;
+                    for(int i = 0; i < frames; i++){
+                        int pullOffset = 4;
+                        Pixmap frame = new Pixmap(slice.width, slice.height);
+                        for(int y = 0; y < slice.height; y++){
+                            int idx = y + i;
+                            if(idx >= slice.height){
+                                idx -= slice.height;
+                                idx += pullOffset;
+                            }
+
+                            frame.setRaw(0, y, slice.getRaw(0, idx));
+                        }
+                        save(frame, type.name + "-treads" + i);
+                    }
+                }
+
                 outliner.get(type.jointRegion);
                 outliner.get(type.footRegion);
                 outliner.get(type.legBaseRegion);