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extends Node
class_name AIController
# ------------------ Godot RL Agents Logic ------------------------------------#
@export var reset_after := 1000
var heuristic := "human"
var done := false
var reward := 0.0
var n_steps := 0
var needs_reset := false
func _ready():
add_to_group("AGENT")
#-- Methods that need implementing using the "extend script" option in Godot --#
func get_obs() -> Dictionary:
assert(false, "the get_obs method is not implemented when extending from ai_controller")
return {"obs":[]}
func get_reward() -> float:
assert(false, "the get_reward method is not implemented when extending from ai_controller")
return 0.0
func get_action_space() -> Dictionary:
assert(false, "the get get_action_space method is not implemented when extending from ai_controller")
return {
"example_actions_continous" : {
"size": 2,
"action_type": "continuous"
},
"example_actions_discrete" : {
"size": 2,
"action_type": "discrete"
},
}
func set_action(action) -> void:
assert(false, "the get set_action method is not implemented when extending from ai_controller")
# -----------------------------------------------------------------------------#
func _physics_process(delta):
n_steps += 1
if n_steps > reset_after:
needs_reset = true
func get_obs_space():
# may need overriding if the obs space is complex
var obs = get_obs()
return {
"obs": {
"size": [len(obs["obs"])],
"space": "box"
},
}
func reset():
n_steps = 0
needs_reset = false
func reset_if_done():
if done:
reset()
func set_heuristic(h):
# sets the heuristic from "human" or "model" nothing to change here
heuristic = h
func get_done():
return done
func set_done_false():
done = false
func zero_reward():
reward = 0.0
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