rowboz/robots.go

package main

func (game *Game) initRobots() {
	var fabricate int = game.level * 16
	for i := 0; i < fabricate; i++ {
		var found bool
		var rndPos Position
		for !found {
			rndPos = game.randPos()
			if !game.onPlayer(rndPos) {
				found = true
			}
		}
		game.robots = append(game.robots, rndPos)
	}
}

func (game *Game) drawRobots() {
	for _, r := range game.robots {
		game.screen.SetContent(r.x, r.y, '+', nil, game.style)
	}
}

func (game *Game) moveRobots() {
	// Iterate through the robots
	for i, r := range game.robots {

		// Determine in which direction to go
		if game.player.position.x < r.x {
			game.robots[i].x--
		} else if game.player.position.x > r.x {
			game.robots[i].x++
		}

		if game.player.position.y < r.y {
			game.robots[i].y--
		} else if game.player.position.y > r.y {
			game.robots[i].y++
		}

	}

	// After all the moves, lets check if any of the rowboz collided with anything
	for i, r := range game.robots {

		// Check if it collides with anything.
		if game.onPlayer(r) {
			game.gameover = 1
			return
		}

		if game.onRobot(i, r) || game.onTrash(r) {

			trash := r

			// delete robot
			game.deleteRobot(i)

			// create trash
			game.addTrash(trash)

		}

	}
}

func (game *Game) onRobot(index int, pos Position) bool {
	var found bool
	for i, r := range game.robots {
		if index != i && pos.x == r.x && pos.y == r.y {
			found = true
		}
	}
	return found
}

// TODO: improve this
func (game *Game) deleteRobot(robot int) {

	var rowboz []Position

	for i, r := range game.robots {
		if robot != i {
			rowboz = append(rowboz, r)
		}
	}

	game.robots = nil
	game.robots = rowboz

	game.player.score++

}