checkpoint-system

{
  "file_path": "/home/user/task/scripts/checkpoint.gd",
  "content": "class_name Checkpoint\nextends Area2D\n\n## Emitted when the player first lights this checkpoint.\nsignal activated(id: int)\n## Emitted when a final checkpoint activates, signalling the level is done.\nsignal level_complete\n\n@export var checkpoint_id: int = 0\n@export var is_final_checkpoint: bool = false\n\n## True once the player has lit this checkpoint; cleared by reset().\nvar is_active: bool = false\n\n## Color ramp the beacon walks through as it charges (deep blue -> cyan -> white).\n@export var charge_gradient: Gradient\n## Scale ramp the beacon follows as it charges.\n@export var scale_curve: Curve\n\n## The pulsing visual.\n@export var beacon: Sprite2D\n## Shows the checkpoint's id once lit.\n@export var charge_label: Label\n\n\n## Drive the beacon's look for a charge fraction t in [0, 1].\nfunc apply_charge(t: float) -> void:\n\tbeacon.modulate = charge_gradient.sample(t)\n\tbeacon.scale = Vector2.ONE * scale_curve.sample_baked(t)\n\n\nfunc _on_body_entered(body: Node) -> void:\n\t# Only the player can light a checkpoint, and only once until reset.\n\tif is_active or not body.is_in_group(\"Player\"):\n\t\treturn\n\n\tis_active = true\n\tapply_charge(1.0)\n\tcharge_label.text = str(checkpoint_id)\n\tactivated.emit(checkpoint_id)\n\n\tif is_final_checkpoint:\n\t\tlevel_complete.emit()\n\n\n## Re-arm the checkpoint so it can be lit again.\nfunc reset() -> void:\n\tis_active = false\n"
}

{
  "file_path": "/home/user/task/scripts/checkpoint.gd"
}

{
  "file_path": "/home/user/task/scripts/checkpoint.gd",
  "content": "class_name Checkpoint\nextends Area2D\n\n## Emitted when the player first lights this checkpoint.\nsignal activated(id: int)\n## Emitted when a final checkpoint activates, signalling the level is done.\nsignal level_complete\n\n@export var checkpoint_id: int = 0\n@export var is_final_checkpoint: bool = false\n\n## True once the player has lit this checkpoint; cleared by reset().\nvar is_active: bool = false\n\n## Color ramp the beacon walks through as it charges (deep blue -> cyan -> white).\n@export var charge_gradient: Gradient\n## Scale ramp the beacon follows as it charges.\n@export var scale_curve: Curve\n\n## The pulsing visual.\n@export var beacon: Sprite2D\n## Shows the checkpoint's id once lit.\n@export var charge_label: Label\n\n\n## Drive the beacon's look for a charge fraction t in [0, 1].\nfunc apply_charge(t: float) -> void:\n\tbeacon.modulate = charge_gradient.sample(t)\n\tbeacon.scale = Vector2.ONE * scale_curve.sample_baked(t)\n\n\nfunc _on_body_entered(body: Node) -> void:\n\t# Only the player can light a checkpoint, and only once until reset.\n\tif is_active or not body.is_in_group(\"Player\"):\n\t\treturn\n\n\tis_active = true\n\tapply_charge(1.0)\n\tcharge_label.text = str(checkpoint_id)\n\tactivated.emit(checkpoint_id)\n\n\tif is_final_checkpoint:\n\t\tlevel_complete.emit()\n\n\n## Re-arm the checkpoint so it can be lit again.\nfunc reset() -> void:\n\tis_active = false\n"
}

ls -R . 2>/dev/null | head -50 && echo "---project.godot---" && cat project.godot 2>/dev/null | head -30 && echo "---existing tscn?---" && ls scenes/ 2>/dev/null

{
  "file_path": "/home/user/task/scenes/checkpoint.tscn"
}

cat scripts/checkpoint.gd.uid; echo; echo "---test.tscn for reference---"; cat scenes/test.tscn

{
  "file_path": "/home/user/task/scenes/checkpoint.tscn",
  "content": "[gd_scene load_steps=5 format=3 uid=\"uid://c0checkpoint00\"]\n\n[ext_resource type=\"Script\" path=\"res://scripts/checkpoint.gd\" id=\"1\"]\n\n[sub_resource type=\"Gradient\" id=\"Gradient_1\"]\noffsets = PackedFloat32Array(0, 0.5, 1)\ncolors = PackedColorArray(0.1, 0.2, 0.6, 1, 0.2, 0.9, 1, 1, 1, 1, 1, 1)\n\n[sub_resource type=\"Curve\" id=\"Curve_1\"]\nmax_value = 2.0\n_data = [Vector2(0, 1), 0.0, 0.0, 0, 0, Vector2(0.5, 1.8), 0.0, 0.0, 0, 0, Vector2(1, 2), 0.0, 0.0, 0, 0]\npoint_count = 3\n\n[sub_resource type=\"RectangleShape2D\" id=\"Rect_1\"]\nsize = Vector2(32, 32)\n\n[node name=\"Checkpoint\" type=\"Area2D\"]\nscript = ExtResource(\"1\")\ncharge_gradient = SubResource(\"Gradient_1\")\nscale_curve = SubResource(\"Curve_1\")\nbeacon = NodePath(\"Beacon\")\ncharge_label = NodePath(\"ChargeLabel\")\n\n[node name=\"CollisionShape2D\" type=\"CollisionShape2D\" parent=\".\"]\nshape = SubResource(\"Rect_1\")\n\n[node name=\"Beacon\" type=\"Sprite2D\" parent=\".\"]\n\n[node name=\"ChargeLabel\" type=\"Label\" parent=\".\"]\n\n[connection signal=\"body_entered\" from=\".\" to=\".\" method=\"_on_body_entered\"]\n"
}

command -v godot >/dev/null 2>&1 && godot --headless --check-only --script scripts/checkpoint.gd 2>&1 | head -20 || echo "godot not installed , skipping validation"

GODOT_SILENCE_ROOT_WARNING=1 timeout 30 godot --headless --quit 2>&1 | grep -iE "error|scene|checkpoint" | head -20; echo "exit: done"

cat > /tmp/check.gd <<'EOF'
extends SceneTree
func _init():
	var cp = load("res://scenes/checkpoint.tscn").instantiate()
	print("grad@0 ", cp.charge_gradient.sample(0.0))
	print("grad@.5 ", cp.charge_gradient.sample(0.5))
	print("grad@1 ", cp.charge_gradient.sample(1.0))
	print("curve@0 ", cp.scale_curve.sample_baked(0.0))
	print("curve@.5 ", cp.scale_curve.sample_baked(0.5))
	print("curve@1 ", cp.scale_curve.sample_baked(1.0))
	quit()
EOF
GODOT_SILENCE_ROOT_WARNING=1 timeout 30 godot --headless --script /tmp/check.gd 2>&1 | grep -iE "grad|curve"