18 - Implements crouching

Game/Classes/Player/CollisionShapeBody.gd

@@ -0,0 +1,51 @@
+# This script moves the shape up half the amount it shrinks when crouching
+# This way the top of the capsule keeps the same relative position to the camera
+# Moving the camera instead would cause a camera move when crouching in the air
+# which is weird (I tested it).
+#
+# It also acts as a middleman to ensure crouching will work with all shape types
+
+extends CollisionShape
+
+var height: = 1.0 setget set_height, get_height
+
+var _normal_height: float
+var _normal_y: float
+
+func _ready() -> void:
+	_normal_y = translation.y
+
+	match shape.get_class():
+		"CapsuleShape":
+			_normal_height = shape.height
+
+		"BoxShape":
+			_normal_height = shape.extents.z
+
+		var another_class:
+			push_error("Height logic not implemented for shape %s" % another_class)
+
+func _process(delta: float) -> void:
+	if _normal_height:
+		# Using self. make so we call the setter even though we're inside the objecr
+		translation.y = _normal_y + (_normal_height - self.height) / 2.0
+
+func set_height(value: float) -> void:
+	match shape.get_class():
+		"CapsuleShape":
+			shape.height = value
+
+		"BoxShape":
+			shape.extents.z = value
+
+func get_height() -> float:
+	match shape.get_class():
+		"CapsuleShape":
+			return shape.height
+
+		"BoxShape":
+			return shape.extents.z
+
+		var _:
+			return 0.0
+

Game/Classes/Player/Player.gd

@@ -2,8 +2,13 @@ class_name Player
 extends KinematicBody
 
 const GRAVITY = Vector3.DOWN * 9.8 * 1.5
+const UP = Vector3.UP
 const JUMP_VELOCITY = 8
 const WALK_VELOCITY = 8
+const CROUCH_WALK_VELOCITY = 2
+const CROUCH_VELOCITY = 5
+const HEIGHT = 1.1
+const CROUCH_HEIGHT = 0.55
 
 const AIR_CONTROL = 0.1
 
@@ -16,6 +21,7 @@ const MOUSE_SENSITIVITY = 1.0 / 1000
 export var show_healthbar = true
 export var max_health = 150
 onready var health = max_health setget set_health
+onready var collision_shape: = $CollisionShapeBody
 
 onready var camera = $Camera
 onready var debug = $Debug
@@ -102,7 +108,7 @@ func on_bullet_flyby(from, to):
 	get_tree().root.call_deferred("add_child", flyby_noise)
 
 remote func jump():
-	if is_on_floor:
+	if is_on_floor():
 		velocity.y = JUMP_VELOCITY
 		jump_timeout = 0.2
 		$Sounds/Jump.play()
@@ -160,7 +166,7 @@ func jetpack_grounded(delta):
 	]
 
 	# Only charge when grounded.
-	if is_on_floor:
+	if is_on_floor():
 		jetpack_fuel = clamp(
 			jetpack_fuel + JETPACK_REFILL_RATE * delta,
 			0.0,
@@ -194,8 +200,6 @@ func _physics_process(delta):
 	if get_parent().name != "Players":
 		return
 
-	check_floor_collision()
-
 	walk(delta)
 	fall(delta)
 	jetpack_grounded(delta)
@@ -208,30 +212,16 @@ func _physics_process(delta):
 	if jump_timeout > 0:
 		movement_vector = move_and_slide(velocity, Vector3.UP)
 	else:
-		var upvector = floor_normal
-		movement_vector = move_and_slide_with_snap(velocity, Vector3.DOWN, upvector, true)
+		movement_vector = move_and_slide_with_snap(velocity, Vector3.DOWN, UP, true)
 
 	velocity = movement_vector
 
 	rset("translation", translation)
 
-func check_floor_collision():
-	var space_state = get_world().direct_space_state
-
-	var from = global_transform.xform(Vector3(0, 0.0, 0))
-	var to = global_transform.xform(Vector3(0, -0.3, 0.0))
-
-	var result  = space_state.intersect_ray(from, to)
-
-	if jump_timeout > 0:
-		is_on_floor = false
-	elif result:
-		is_on_floor = true
-		floor_normal = result.normal
-	else:
-		is_on_floor = false
-
 func walk(delta):
+	var floor_normal = get_floor_normal()
+	var is_on_floor = is_on_floor()
+
 	jump_timeout -= delta
 
 	# Walk
@@ -254,7 +244,8 @@ func walk(delta):
 	walking_speed = walking_speed.rotated(rotation.y)
 
 	if is_on_floor:
-		walking_speed = lerp(walking_speed, walk_direction * WALK_VELOCITY, delta * WALK_ACCEL)
+		var target_velocity: = WALK_VELOCITY if not Input.is_action_pressed("Crouch") else CROUCH_WALK_VELOCITY
+		walking_speed = lerp(walking_speed, walk_direction * target_velocity, delta * WALK_ACCEL)
 	else:
 		walking_speed = lerp(walking_speed, walk_direction * JUMP_VELOCITY, delta * JUMP_ACCEL)
 	walking_speed = walking_speed.rotated(-rotation.y)
@@ -263,7 +254,7 @@ func walk(delta):
 	velocity.z = walking_speed.y
 
 	# Make walking perpendicular to the floor
-	if is_on_floor:
+	if is_on_floor and not Input.is_action_pressed("MoveJump") and floor_normal.y:
 		velocity.y -= velocity.dot(floor_normal) / floor_normal.y
 
 	if walking_speed.length() > 0 and is_on_floor:
@@ -271,16 +262,25 @@ func walk(delta):
 	elif walking_speed.length() == 0 and is_on_floor:
 		weapon_bob_anim.travel("Idle")
 
+	# Crouch
+	if not get_tree().is_input_handled():
+		if Input.is_action_pressed("Crouch"):
+			collision_shape.height = move_toward(collision_shape.height, CROUCH_HEIGHT, CROUCH_VELOCITY * delta)
+		else:
+			collision_shape.height = move_toward(collision_shape.height, HEIGHT, CROUCH_VELOCITY * delta)
+#			collision_shape.shape.height = move_toward(collision_shape.shape.height, HEIGHT, CROUCH_VELOCITY * delta)
+
+		collision_shape.height = stepify(collision_shape.height, 0.01)
+
 
 func fall(delta):
-	if is_on_floor:
+	if is_on_floor():
 		if not was_on_floor: # if this is the first frame of ground conotact after a frame of no ground contact - we've just ended a fall
 			weapon_bob_anim.travel("Land")
-
 	else:
 		velocity += delta * GRAVITY
 
-	was_on_floor = is_on_floor
+	was_on_floor = is_on_floor()
 
 
 master func on_hit(damage, location):

Game/Classes/Player/Player.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=44 format=2]
+[gd_scene load_steps=45 format=2]
 
 [ext_resource path="res://Classes/UI/Health.tscn" type="PackedScene" id=1]
 [ext_resource path="res://Classes/UI/Billboard.gd" type="Script" id=2]
@@ -12,6 +12,7 @@
 [ext_resource path="res://Assets/Weapons/GrenadeLauncher/GrenadeLauncher.tscn" type="PackedScene" id=10]
 [ext_resource path="res://Assets/Effects/CircleSoft.svg" type="Texture" id=11]
 [ext_resource path="res://Assets/Maps/DM1/OmniFlicker.gd" type="Script" id=12]
+[ext_resource path="res://Classes/Player/CollisionShapeBody.gd" type="Script" id=14]
 
 [sub_resource type="AnimationNodeAnimation" id=1]
 animation = "Idle"
@@ -220,7 +221,7 @@ script = ExtResource( 8 )
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.53592, -0.0651628 )
 
 [node name="Hand" type="Spatial" parent="Camera"]
-transform = Transform( -4.37114e-08, 0, -1, 0, 1, 0, 1, 0, -4.37114e-08, 0.335, -0.390282, -0.559 )
+transform = Transform( -4.37114e-08, 0, -1, 0, 1, 0, 1, 0, -4.37114e-08, 0.335, -0.391038, -0.559 )
 
 [node name="WeaponBobAnimationTree" type="AnimationTree" parent="Camera/Hand"]
 tree_root = SubResource( 12 )
@@ -286,6 +287,7 @@ margin_bottom = 104.0
 [node name="CollisionShapeBody" type="CollisionShape" parent="."]
 transform = Transform( 1, 0, 0, 0, -1.62921e-07, 1, 0, -1, -1.62921e-07, 0, 0.882822, 0 )
 shape = SubResource( 19 )
+script = ExtResource( 14 )
 
 [node name="Debug" type="Label" parent="."]
 margin_right = 41.0

Game/Classes/UI/TextChat.tscn

@@ -30,6 +30,7 @@ margin_left = 8.0
 margin_top = 8.0
 margin_right = -8.0
 margin_bottom = -8.0
+focus_mode = 2
 text = "
 "
 scroll_following = true

Game/project.godot

@@ -114,6 +114,11 @@ ToggleChatVisibility={
 "events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":89,"unicode":0,"echo":false,"script":null)
  ]
 }
+Crouch={
+"deadzone": 0.5,
+"events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":16777238,"unicode":0,"echo":false,"script":null)
+ ]
+}
 
 [rendering]