using System;
using FRB;
using FRB.GUI;
using FRB.Text;
using FRB.Particle;
using FRB.Collections;
using FRB.MSG;
using FRB.Audio;
using FRB.Shapes;
using Math2D;
using Microsoft.DirectX.DirectInput;

namespace GameName
{
    public class GameData
    {
        #region reference to engine managers and data
        public GameForm form;
        public InputManager inpMan;
        public SpriteManager sprMan;
        public TextManager textMan;
        public GuiManager guiMan;
        public Camera camera;
        public Cursor cursor;
        public Random random;
        public ShapeManager shaMan;
        public GameName.Screens.ScreenManager screenManager;
        #endregion

        // declare variables of class scope here
        Sprite playerBall;

        Sprite NPC;

        Joystick joystick;


        Sprite rightWall;
        Sprite leftWall;
        Sprite topWall;
        Sprite bottomWall;


        Sprite obstacle1;

        SpriteArray staticCollidables;
        SpriteArray movableCollidables;

        public void Initialize(GameForm form)
        {
            #region initialize engine managers and data
            this.form = form;
            sprMan = GameForm.sprMan;
            inpMan = GameForm.inpMan;
            textMan = GameForm.textMan;
            guiMan = GameForm.guiMan;
            camera = GameForm.camera;
            cursor = GameForm.cursor;
            random = GameForm.random;
            shaMan = GameForm.shaMan;
            screenManager = GameForm.screenManager;
            #endregion

            if (inpMan.joystickArray.Count == 0)
            {
                inpMan.AddJoystick(
                   Key.Up, Key.Down, Key.Left, Key.Right,
                   new Key[] { Key.A, Key.S, Key.D, Key.F });
            }


            playerBall = sprMan.AddSprite("redball.bmp");
            playerBall.sclY = .5f;
            NPC = sprMan.AddSprite("redball.bmp");
            NPC.x = -3;

            NPC.mass = 3;

            joystick = inpMan.joystickArray[0];
            joystick.DeadZone = 200;

            float wallScl = 2;

            rightWall = sprMan.AddUntexturedSprite();
            rightWall.colorOperation = Microsoft.DirectX.Direct3D.TextureOperation.SelectArg2;
            rightWall.tintBlue = 255;
            rightWall.sclX = wallScl;
            rightWall.sclY = 20;
            rightWall.x = camera.XEdgeAt(0) - wallScl;

            topWall = sprMan.AddUntexturedSprite();
            topWall.colorOperation = Microsoft.DirectX.Direct3D.TextureOperation.SelectArg2;
            topWall.tintBlue = 255;
            topWall.sclX = 30;
            topWall.sclY = wallScl;
            topWall.y = camera.YEdgeAt(0) - wallScl;

            leftWall = rightWall.Clone();
            sprMan.AddSprite(leftWall);
            leftWall.x = -camera.XEdgeAt(0) + wallScl;

            bottomWall = topWall.Clone();
            sprMan.AddSprite(bottomWall);
            bottomWall.y = -camera.YEdgeAt(0) + wallScl;


            obstacle1 = sprMan.AddUntexturedSprite();
            obstacle1.colorOperation = Microsoft.DirectX.Direct3D.TextureOperation.SelectArg2;
            obstacle1.tintBlue = 255;
            obstacle1.x = 5;
            obstacle1.sclX = obstacle1.sclY = 2;
            obstacle1.rotZ = 1;
            
            // add the objects to the static collidables:
            staticCollidables = new SpriteArray();
            staticCollidables.Add(topWall);
            staticCollidables.Add(bottomWall);
            staticCollidables.Add(leftWall);
            staticCollidables.Add(rightWall);
            staticCollidables.Add(obstacle1);

            movableCollidables = new SpriteArray();
            movableCollidables.Add(playerBall);
            movableCollidables.Add(NPC);

            // uncomment this line and pass the qualified string name of the first
            // Screen class that the game should show upon execution.
            //screenManager.Start("NameSpace.Screens.ScreenClassName");
        }


        public void Activity()
        {
            // this can be left uncommented - won't do anything if there are no active Screens
            screenManager.Activity();

            if (joystick.Down(0))
            {
                // we know our angle is rotZ, so let's get the x and y components:

                float absoluteAcceleration = 10;

                playerBall.xAcceleration = (float)Math.Cos(playerBall.rotZ) * absoluteAcceleration;
                playerBall.yAcceleration = (float)Math.Sin(playerBall.rotZ) * absoluteAcceleration;
            }
            else
            {
                playerBall.xAcceleration = playerBall.yAcceleration = 0;
            }

            playerBall.rotZVelocity = -joystick.x / 200.0f;

            // cap the velocity:
            playerBall.xVelocity = Math.Min(10, playerBall.xVelocity);
            playerBall.xVelocity = Math.Max(-10, playerBall.xVelocity);

            playerBall.yVelocity = Math.Min(10, playerBall.yVelocity);
            playerBall.yVelocity = Math.Max(-10, playerBall.yVelocity);


            // perform Collisions here:

            // assumes all movables are circles, all statics are rectangles
            foreach (Sprite movable in movableCollidables)
            {
                foreach (Sprite staticSprite in staticCollidables)
                    Collisions.circleBounceRect(movable, staticSprite);

                foreach (Sprite otherMovable in movableCollidables)
                    if (otherMovable != movable)
                        Collisions.circleBounceBothCircle(movable, otherMovable);
            }


        }


        public void AfterFrameActivity()
        {
            // usually, the only code that goes here is text printing with the TextManager

            // if drawing text, uncomment the following line:
            // textMan.BeginDrawing();

        }

    }


}