Farm like Game.. get tiles?

hollow777

Hello,

im pretty new to godot, working on a farmin simulator. I want to make planting and stuff. I didnt find any tutorial that relate to this, maybe someone has a tutorial that would help otherwise...

how do I just let player dig a hole/plant in front on him just on grass tiles and just let him do that if a Item in his inventory is selected.. like a shovel and stuff... same with chop a tree, how to know if the player clicks on the tree and is in front of it.. so i can make items drop after he chop it?

Best regards, sorry for bad english

TwistedTwigleg

Welcome to the forums @hollow777!

You can use the world_to_map and get_cell functions in the TileMap node to get the tile at a given position. If you convert the mouse position to a tile position using world_to_map, then you should be able to know which tile the player has clicked. For detecting a tile in front of the player, just take the player's position, add a half-tile offset, and then pass the position to world_to_map then get_cell.

This tutorial from KidsCanCode has a snippet showing how to detect a tile using collision data, which should help as a reference.

hollow777

@TwistedTwigleg said: Welcome to the forums @hollow777!

You can use the world_to_map and get_cell functions in the TileMap node to get the tile at a given position. If you convert the mouse position to a tile position using world_to_map, then you should be able to know which tile the player has clicked. For detecting a tile in front of the player, just take the player's position, add a half-tile offset, and then pass the position to world_to_map then get_cell.

This tutorial from KidsCanCode has a snippet showing how to detect a tile using collision data, which should help as a reference.

Thanks for help. But I have troubles with the second part, how do i compare those positions from player and mouse and know if the player did click on the tile in front or not? I dont get it to work. I tryd to use direction_to()

TwistedTwigleg

Here's how I would go about checking if the mouse is in front of the player, written quickly off memory:

# first, convert the player's rotation to a direction
var player_facing_dir = Vector2(cos($PlayerNode.rotation), sin($PlayerNode.rotation))
# get the direction from the player to the mouse
var player_to_mouse = $PlayerNode.global_position.direction_to(get_global_mouse_position())
# Compare the angle difference between the two vectors using the dot product
var player_mouse_angle_dif = player_facing_dir.dot(player_to_mouse)
# In this example, 20 degrees is the maximum angle we will consider in front of the player
if (player_mouse_angle_dif == deg2rad(20)):
	# The mouse is in front of the player!
	pass

You'll probably want to have a condition to check if the mouse is within a certain radius of the player, so the player cannot affect tiles too far away. Something like this: if (get_global_mouse_position() - $PlayerNode.global_position).length() >= MAX_DISTANCE: should work. With that taken into account, the code would look something like this:

# make sure the mouse is within the correct radius
if (get_global_mouse_position() - $PlayerNode.global_position).length() <= MAX_DISTANCE:
	# first, convert the player's rotation to a direction
	var player_facing_dir = Vector2(cos($PlayerNode.rotation), sin($PlayerNode.rotation))
	# get the direction from the player to the mouse
	var player_to_mouse = $PlayerNode.global_position.direction_to(get_global_mouse_position())
	# Compare the angle difference between the two vectors using the dot product
	var player_mouse_angle_dif = player_facing_dir.dot(player_to_mouse)
	# In this example, 20 degrees is the maximum angle we will consider in front of the player
	if (player_mouse_angle_dif == deg2rad(20)):
		# The mouse is in front of the player!
		pass
else:
	# The mouse is out of range!
	pass

I think the code above should work, but I wrote it quickly and have not tested it. The gist is that you need to get the direction the player is facing, assuming the player rotates around, and compare that to the angle from the player to the mouse. If the angles are similar, then it means the mouse is in the same direction that the player is facing. Especially if the mouse position is checked to be within a certain radius, it is very likely that if the angles are similar and the mouse is close enough, that a tile in front of the player has been clicked on.

Hopefully this helps!