lakebane/src/engine/CollisionEngine/Mesh.java

package engine.CollisionEngine;

import engine.gameManager.BuildingManager;
import engine.math.Vector2f;
import engine.math.Vector3f;
import engine.math.Vector3fImmutable;
import engine.objects.Building;
import org.pmw.tinylog.Logger;

import java.awt.geom.Line2D;

import java.awt.geom.Path2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;

public class Mesh {
    public ArrayList<Triangle> triangles;
    public Vector3f mesh_end_point;
    public Vector3f mesh_ref_point;
    public Vector3f mesh_location;
    public float mesh_max_y;
    public float mesh_min_y;
    public Vector3f mesh_scale;
    public int mesh_id;
    public int parent_prop_id;
    public int parent_structure_id;
    public int parentUUID;
    public Rectangle2D.Float mesh_bounds;
    public MeshData meshData;

    public void update(){
        this.BakeTriangles();
    }
    public Vector3f getLocation(){
        Building parentBuilding = BuildingManager.getBuilding(this.parentUUID);
        int degrees = (int)Math.toDegrees(parentBuilding.getBounds().getQuaternion().angleY);
        Vector3f parentLoc = new Vector3f(parentBuilding.loc.x,parentBuilding.loc.y,parentBuilding.loc.z);
        Vector3f offsetLoc = parentLoc.add(this.meshData.loc);
        Vector3f rotatedPoint = Vector3f.rotateAroundPoint(offsetLoc,parentLoc,degrees);
        return rotatedPoint;
    }

    public void BakeTriangles(){

        if(CollisionManager.mesh_triangles.containsKey(this.meshData.meshID) == false){
            Logger.error("Failed To Bake Triangles For Mesh: " + this.meshData.meshID);
            return;
        }
        Building parentBuilding = BuildingManager.getBuilding(this.parentUUID);
        int degrees = (int)Math.toDegrees(parentBuilding.getBounds().getQuaternion().angleY);
        Vector3f parentLoc = new Vector3f(parentBuilding.loc.x,parentBuilding.loc.y,parentBuilding.loc.z);
        Vector3f offsetLoc = parentLoc.add(this.meshData.loc);

        for(Triangle tri : CollisionManager.mesh_triangles.get(this.meshData.meshID)) {

            Triangle newTri = new Triangle();

            Vector3f Point1 = offsetLoc.add(new Vector3f(tri.point1.x,offsetLoc.y,tri.point1.y));
            Vector3f Point2 = offsetLoc.add(new Vector3f(tri.point2.x,offsetLoc.y,tri.point2.y));
            Vector3f Point3 = offsetLoc.add(new Vector3f(tri.point3.x,offsetLoc.y,tri.point3.y));

            Vector3f rotatedPoint1 = Vector3f.rotateAroundPoint(Point1,offsetLoc,degrees);
            Vector3f rotatedPoint2 = Vector3f.rotateAroundPoint(Point2,offsetLoc,degrees);
            Vector3f rotatedPoint3 = Vector3f.rotateAroundPoint(Point3,offsetLoc,degrees);

            newTri.point1 = new Point2D.Float(rotatedPoint1.x,rotatedPoint1.z);
            newTri.point2 = new Point2D.Float(rotatedPoint2.x,rotatedPoint2.z);
            newTri.point3 = new Point2D.Float(rotatedPoint3.x,rotatedPoint3.z);

            newTri.sides = new ArrayList<>();
            newTri.sides.add(new Line2D.Float(newTri.point1,newTri.point2));
            newTri.sides.add(new Line2D.Float(newTri.point2,newTri.point3));
            newTri.sides.add(new Line2D.Float(newTri.point3,newTri.point1));

            this.triangles.add(newTri);
        }
    }

    public Boolean collides(Line2D line){
        for(Triangle tri : this.triangles)
            if(tri.collides(line))
                return true;

        return false;
    }
}