package me.hammerle.supersnuvi.entity.components.ai;

import me.hammerle.snuviengine.api.Shader;
import me.hammerle.snuviengine.api.Texture;
import me.hammerle.supersnuvi.entity.Entity;
import me.hammerle.supersnuvi.gamelogic.Level;
import me.hammerle.supersnuvi.tiles.RampTile;
import me.hammerle.supersnuvi.tiles.Tile;
import me.hammerle.supersnuvi.util.Face;
import me.hammerle.supersnuvi.util.SoundUtils;
import me.hammerle.supersnuvi.util.Utils;

public class LondonerController extends Controller
{
    private final static Texture LONDONER = new Texture("resources/londoner.png");
    
    // for render offset: 0.21875f, 0.59375f, 0.65625f, 2.0f
    // render offset: -0.21875, -0.59375
    private final static float OFFSET_X = -Tile.SIZE * 0.21875f;
    private final static float OFFSET_Y = -Tile.SIZE * 0.59375f;
    
    private final boolean evil;
    
    private float ox = 0.0f;
    private float tx = 0.0f;
    private float ty = 0.0f;
    
    private int walkFrame = 0;
    private int transformFrame = -1;
    private int deathCounter = 0;
    private int deathFrame = 0;
    
    private Face oldFace = Face.LEFT;
    private Face direction = Face.LEFT;
    
    private boolean shouldJump = false;
    
    private int hurtTicks = 0;
    
    public LondonerController(boolean evil) 
    {
        this.evil = evil;
    }
    
    private boolean hasRedEyes()
    {
        return transformFrame >= 3;
    }
    
    @Override
    public boolean isAnimated()
    {
        return deathFrame < 7;
    }
    
    @Override
    public void tick(Entity ent, Level level) 
    {
        if(hurtTicks > 0)
        {
            hurtTicks--;
        }
        
        if(evil)
        {
            if(transformFrame != -1)
            {
                if(transformFrame < 3)
                {
                    ox = direction == Face.RIGHT ? 0.0f: -1.125f * Tile.SIZE;
                    tx = transformFrame * 0.125f + 0.125f;
                    ty = 0.375f;
                    transformFrame++;
                    return;
                }
            }
            else if(level.getHero().getSquaredDistance(ent) <= 16384) // 4 Tiles
            {
                transformFrame = 0;
            }
        }
        
        if(ent.getHealth().isDead())
        {
            ox = direction == Face.RIGHT ? -Tile.SIZE: -0.125f * Tile.SIZE;
            
            tx = deathFrame * 0.125f;
            ty = hasRedEyes() ? 0.125f : 0.25f;
            
            walkFrame = 0;
            deathCounter++;
            if(deathCounter >= 3)
            {
                deathCounter = 0;
                deathFrame++;
            }
            return;
        }
        
        if(hasRedEyes())
        {
            float hx = level.getHero().getCenterX();
            if(hx < ent.getCenterX())
            {
                ent.applyOwnForce(-ent.getMovement().getVelocityX(), 0.0f);
                direction = Face.LEFT;
            }
            else
            {
                ent.applyOwnForce(ent.getMovement().getVelocityX(), 0.0f);
                direction = Face.RIGHT;
            }
        }
        else
        {
            if(direction == Face.LEFT)
            {
                ent.applyOwnForce(-ent.getMovement().getVelocityX(), 0.0f);
            }
            else
            {
                ent.applyOwnForce(ent.getMovement().getVelocityX(), 0.0f);
            }
        }
        
        if(shouldJump)
        {
            SoundUtils.playSound(SoundUtils.Sound.LONDONER_JUMP);
            ent.jump();
            shouldJump = false;
        }
        
        ox = direction == Face.RIGHT ? 0.0f: -1.125f * Tile.SIZE;
        
        if(ent.isOnGround())
        {
            if(ent.getOwnForceX() == 0.0f)
            {
                tx = 0.875f;
                ty = hasRedEyes() ? 0.25f : 0.375f;
            }
            else
            {
                deathFrame = 0;
                walkFrame = (walkFrame + 1) % 6;
                tx = walkFrame * 0.125f;
                ty = hasRedEyes() ? 0.5f : 0.625f;
            }
        }
        else
        {
            deathFrame = 0;
            walkFrame = 0;
            tx = 0.125f;
            ty = hasRedEyes() ? 0.5f : 0.625f;
        }
        
        oldFace = direction;
    }

    @Override
    public void renderTick(Entity ent, float lag)
    {
        if(ent.getHealth().wasHurt())
        {
            Shader.setColorEnabled(true);
            Shader.setMixColorEnabled(true);
            Shader.setMixColor(1.0f, 0.0f, 0.0f, 1.0f);
        }
        if(ent.getHealth().wasHealed())
        {
            Shader.setColorEnabled(true);
            Shader.setMixColorEnabled(true);
            Shader.setMixColor(0.0f, 1.0f, 0.0f, 1.0f);
        }
        
        LONDONER.bind();
        float x = Utils.interpolate(ent.getLastX(), ent.getX(), lag);
        float y = Utils.interpolate(ent.getLastY(), ent.getY(), lag);
        
        float m1;
        float m2;
        if(oldFace == Face.LEFT)
        {
            m1 = 2.0f * Tile.SIZE;
            m2 = 0.0f;
        }
        else
        {
            m1 = 0.0f;
            m2 = 2.0f * Tile.SIZE;
        }
        Shader.getTextureRenderer().drawRectangle(
                x + ox + m1 + OFFSET_X, y + OFFSET_Y,
                x + ox + m2 + OFFSET_X, y + 2.0f * Tile.SIZE + OFFSET_Y, 
                tx, ty, 
                tx + 0.125f, ty + 0.125f);
        
        if(ent.getHealth().wasHurt() || ent.getHealth().wasHealed())
        {
            Shader.setColorEnabled(false);
            Shader.setMixColorEnabled(false);
        }
    }
    
    @Override
    public void onCollideWithTile(Entity ent, int x, int y, Level l, Tile t, Face face)
    {
        if(ent.getHealth().isDead())
        {
            return;
        }
        if(hasRedEyes())
        {
            if(!(t instanceof RampTile) && face == direction && ent.getOwnForceX() == 0.0f)
            {
                shouldJump = true;
            }
        }
        else
        {
            if(t.shouldAiUseCollisionBox(x, y, l))
            {
                switch(face)
                {
                    case LEFT:
                        direction = Face.RIGHT;
                        break;
                    case RIGHT:
                        direction = Face.LEFT;
                        break;
                }
            }
        }
    }

    @Override
    public void onCollideWithEntity(Entity ent, Entity other, Face face)
    {
        if(ent.getHealth().isDead())
        {
            return;
        }
        switch(face)
        {
            case LEFT:
            case RIGHT:
                if(hurtTicks > 0)
                {
                    return;
                }
                if(other.getItemCollector().isHero() && hasRedEyes())
                {
                    other.getHealth().addHealthPercent(-0.1f);
                    other.applyForce(0.0f, -20.0f * Tile.SIZE_SCALE);
                    if(ent.getCenterX() < other.getCenterX())
                    {
                        other.applyForce(20.0f * Tile.SIZE_SCALE, 0.0f);
                    }
                    else
                    {
                        other.applyForce(-20.0f * Tile.SIZE_SCALE, 0.0f);
                    }
                }
                else
                {
                    direction = direction.getOpposite();
                }
                break;
            case UP:
                ent.getHealth().addHealthPercent(-0.201f);
                other.applyForce(0.0f, -other.getMotionY() - other.getMovement().getJumpPower() * 0.5f);
                hurtTicks = 10;
                break;
        }
    }
}