Added DrawBlockParts

core/src/mindustry/world/draw/DrawBlockParts.java

@@ -0,0 +1,56 @@
+package mindustry.world.draw;
+
+import arc.*;
+import arc.graphics.g2d.*;
+import arc.struct.*;
+import arc.util.*;
+import mindustry.entities.part.*;
+import mindustry.entities.units.*;
+import mindustry.gen.*;
+import mindustry.world.*;
+
+public class DrawBlockParts extends DrawBlock{
+    public Seq<DrawPart> parts = new Seq<>();
+    public TextureRegion preview;
+
+    @Override
+    public void getRegionsToOutline(Block block, Seq<TextureRegion> out){
+        for(var part : parts){
+            part.getOutlines(out);
+        }
+    }
+
+    @Override
+    public void drawPlan(Block block, BuildPlan plan, Eachable<BuildPlan> list){
+        if(preview.found()){
+            Draw.rect(preview, plan.drawx(), plan.drawy(), block.rotate ? plan.rotation * 90f - 90f : 0f);
+        }
+    }
+
+    @Override
+    public void draw(Building build){
+        if(parts.size > 0){
+            float progress = build.progress();
+
+            var params = DrawPart.params.set(build.warmup(), 1f - progress, 1f - progress, 0f, 0f, 0f, build.x, build.y, build.rotdeg());
+
+            for(var part : parts){
+                part.draw(params);
+            }
+        }
+    }
+
+    @Override
+    public void load(Block block){
+        preview = Core.atlas.find(block.name + "-preview");
+
+        for(var part : parts){
+            part.load(block.name);
+        }
+    }
+
+    @Override
+    public TextureRegion[] icons(Block block){
+        return preview.found() ? new TextureRegion[]{preview} : super.icons(block);
+    }
+}