/*
Copyright 2021 Josh Deprez

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package example

import (
	"fmt"
	"image"
	"math/rand"

	"github.com/DrJosh9000/ichigo/engine"
	"github.com/DrJosh9000/ichigo/geom"
)

var _ interface {
	engine.Scanner
	engine.Prepper
	engine.Updater
} = &Bubble{}

type Bubble struct {
	Life   int
	Sprite engine.Sprite

	game *engine.Game
}

func NewBubble(pos geom.Int3) *Bubble {
	return &Bubble{
		Life: 60,
		Sprite: engine.Sprite{
			Actor: engine.Actor{
				CollisionDomain: "level_1",
				Pos:             pos,
				Bounds: geom.Box{
					Min: geom.Pt3(-4, -4, -4),
					Max: geom.Pt3(4, 4, 4),
				},
			},
			DrawOffset: image.Pt(-4, -4),
			Sheet: engine.Sheet{
				AnimDefs: map[string]*engine.AnimDef{
					"bubble": {
						Steps: []engine.AnimStep{
							{Cell: 0, Duration: 5},
							{Cell: 1, Duration: 15},
							{Cell: 2, Duration: 20},
							{Cell: 3, Duration: 15},
							{Cell: 4, Duration: 3},
							{Cell: 5, Duration: 2},
						},
						OneShot: true,
					},
				},
				CellSize: image.Pt(8, 8),
				Src:      engine.ImageRef{Path: "assets/bubble.png"},
			},
		},
	}
}

func (b *Bubble) Scan(visit engine.VisitFunc) error {
	return visit(&b.Sprite)
}

func (b *Bubble) String() string {
	return fmt.Sprintf("Bubble@%v", b.Sprite.Actor.Pos)
}

func (b *Bubble) Prepare(g *engine.Game) error {
	b.game = g
	return nil
}

func (b *Bubble) Update() error {
	b.Life--
	if b.Life <= 0 {
		b.game.PathUnregister(b)
	}
	die := func() { b.Life = 0 }
	b.Sprite.Actor.MoveX(float64(rand.Intn(3)-1), die)
	b.Sprite.Actor.MoveY(-1, die)
	//lint:ignore SA4000 one random minus another is not always zero...
	b.Sprite.Actor.MoveZ(float64(rand.Intn(2)-rand.Intn(2)), die)
	return nil
}