package main

import (
	rl "github.com/gen2brain/raylib-go/raylib"
)

func DrawPlayer(player Player, model rl.Model) {
	// Draw the player based on its actual position (PosActual) and current tile height
	playerPos := rl.Vector3{
		X: player.PosActual.X,
		Y: mapGrid[player.PosTile.X][player.PosTile.Y].Height*TileHeight + 16.0,
		Z: player.PosActual.Z,
	}

	rl.DrawModel(model, playerPos, 16, rl.White)

	// Draw highlight around target tile
	if len(player.TargetPath) > 0 {
		targetTile := player.TargetPath[len(player.TargetPath)-1] // last tile in the slice
		targetPos := rl.Vector3{
			X: float32(targetTile.X * TileSize),
			Y: mapGrid[targetTile.X][targetTile.Y].Height * TileHeight,
			Z: float32(targetTile.Y * TileSize),
		}
		rl.DrawCubeWires(targetPos, TileSize, TileHeight, TileSize, rl.Green)

		nextTile := player.TargetPath[0] // first tile in the slice
		nextPos := rl.Vector3{
			X: float32(nextTile.X * TileSize),
			Y: mapGrid[nextTile.X][nextTile.Y].Height * TileHeight,
			Z: float32(nextTile.Y * TileSize),
		}
		rl.DrawCubeWires(nextPos, TileSize, TileHeight, TileSize, rl.Yellow)
	}
}

func (player *Player) MoveTowards(target Tile, deltaTime float32) {
	// Calculate the direction vector to the target tile
	targetPos := rl.Vector3{
		X: float32(target.X * TileSize),
		Y: mapGrid[target.X][target.Y].Height * TileHeight,
		Z: float32(target.Y * TileSize),
	}

	// Calculate direction and normalize it for smooth movement
	direction := rl.Vector3Subtract(targetPos, player.PosActual)
	distance := rl.Vector3Length(direction)
	if distance > 0 {
		direction = rl.Vector3Scale(direction, player.Speed*deltaTime/distance)
	}

	// Move the player towards the target tile
	if distance > 1.0 {
		player.PosActual = rl.Vector3Add(player.PosActual, direction)
	} else {
		// Snap to the target tile when close enough
		player.PosActual = targetPos
		player.PosTile = target // Update player's tile
		if len(player.TargetPath) > 1 {
			player.TargetPath = player.TargetPath[1:] // Move to next tile in path if any
		}
	}
}