package d2map

import (
	"math/rand"
	"strings"

	"github.com/OpenDiablo2/OpenDiablo2/d2core/d2map/d2wilderness"

	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum"
)

func (m *MapEngine) GenerateAct1Overworld(cacheTiles bool) {
	rand.Seed(m.seed)
	region, entities := loadRegion(m.seed, 0, 0, d2enum.RegionAct1Town, 1, -1, cacheTiles)
	m.regions = append(m.regions, region)
	m.entities.Add(entities...)
	if strings.Contains(region.regionPath, "E1") {
		region, entities := loadRegion(m.seed, region.tileRect.Width, 0, d2enum.RegionAct1Town, 2, -1, cacheTiles)
		m.AppendRegion(region)
		m.entities.Add(entities...)
	} else if strings.Contains(region.regionPath, "S1") {
		region.tileRect.Height -= 1 // For some reason, this has a duplciate wall tile strip...
		mapWidthTiles := ((region.tileRect.Width - 18) / 9)
		yOffset := region.tileRect.Height
		waterXOffset := region.tileRect.Width - 17
		region, entities := loadRegion(m.seed, 0, yOffset, d2enum.RegionAct1Town, 3, -1, cacheTiles)
		m.AppendRegion(region)
		m.entities.Add(entities...)
		yOffset += region.tileRect.Height

		var choices = [...]int{
			d2wilderness.StoneFill1,
			d2wilderness.StoneFill2,
			d2wilderness.SwampFill1,
			d2wilderness.Cottages1,
			d2wilderness.Cottages2,
			d2wilderness.Cottages3,
			d2wilderness.CorralFill,
			d2wilderness.FallenCamp1,
			d2wilderness.FallenCamp2,
			d2wilderness.Pond,
		}

		for i := 0; i < 6; i++ {
			// West Border
			region, entities = loadRegion(m.seed, 0, yOffset, d2enum.RegionAct1Wilderness, d2wilderness.TreeBorderWest, 0, cacheTiles)
			m.AppendRegion(region)
			m.entities.Add(entities...)

			// East Border
			region, entities = loadRegion(m.seed, waterXOffset, yOffset, d2enum.RegionAct1Wilderness, d2wilderness.WaterBorderEast, 0, cacheTiles)
			m.AppendRegion(region)
			m.entities.Add(entities...)

			// Grass
			for ix := 0; ix < mapWidthTiles; ix++ {
				region, entities = loadRegion(m.seed, ((ix)*9)+7, yOffset, d2enum.RegionAct1Wilderness, choices[rand.Intn(len(choices))], 0, cacheTiles)
				m.AppendRegion(region)
				m.entities.Add(entities...)
			}

			yOffset += 9
		}

	}
}