92 lines
2.9 KiB
GDScript
92 lines
2.9 KiB
GDScript
extends RigidBody3D
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# Initially I used a CharacterBody3D, however, I wanted the player to bounce off
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# other objects in the environment and that would have required manual handling
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# of collisions. So that's why we're using a RigidBody3D instead.
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const MOVE_SPEED := 8.0
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const ACCELLERATION := 30.0
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const DECELLERATION := 40.0
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const JUMP_SPEED := 4.0
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const MIN_FOV := 10
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const MAX_FOV := 180
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const ZOOM_FACTOR := 1.1 # Zoom out when >1, in when < 1
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var mouse_sensitivity := 0.005
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var rotation_x := 0.0
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var rotation_y := 0.0
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var cameraMoveMode := false
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@export var camera_path: NodePath
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@onready var cam: Camera3D = get_node(camera_path) if camera_path != NodePath("") else null
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func _ready() -> void:
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axis_lock_angular_x = true
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axis_lock_angular_z = true
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angular_damp = 6.0
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contact_monitor = true
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max_contacts_reported = 4
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func _integrate_forces(state):
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# Input as 2D vector
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var input2v := Input.get_vector("ui_left", "ui_right", "ui_up", "ui_down")
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# Camera based movement
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var forward := Vector3.FORWARD * -1.0
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var right := Vector3.RIGHT
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if cam:
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forward = cam.global_transform.basis.z
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right = cam.global_transform.basis.x
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# project onto ground plane so looking up/down doesn't tilt movement
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forward.y = 0.0
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right.y = 0.0
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if forward.length() > 0.0001:
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forward = forward.normalized()
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if right.length() > 0.0001:
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right = right.normalized()
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var dir := (right * input2v.x + forward * input2v.y).normalized()
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var target_v := dir * MOVE_SPEED
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var ax := ACCELLERATION if dir != Vector3.ZERO else DECELLERATION
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linear_velocity.x = move_toward(linear_velocity.x, target_v.x, ax * state.step)
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linear_velocity.z = move_toward(linear_velocity.z, target_v.z, ax * state.step)
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# Jump Logic
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var on_floor = false
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for i in state.get_contact_count():
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var normal = state.get_contact_local_normal(i)
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if normal.y > 0.5:
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on_floor = true
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break
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if on_floor and Input.is_action_just_pressed("ui_accept"):
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linear_velocity.y = JUMP_SPEED
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func _input(event):
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if event is InputEventMouseButton:
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if event.button_index == MOUSE_BUTTON_MIDDLE:
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if event.pressed:
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cameraMoveMode = true
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Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
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else:
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cameraMoveMode = false
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Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
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if event is InputEventMouseMotion and cameraMoveMode:
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rotation_x -= event.relative.y * mouse_sensitivity
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rotation_y -= event.relative.x * mouse_sensitivity
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rotation_x = clamp(rotation_x, deg_to_rad(-90), deg_to_rad(90)) # Prevent flipping
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$Camera3D.rotation.x = rotation_x
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rotation.y = rotation_y
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if event is InputEventMouseButton and event.pressed:
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if event.button_index == MOUSE_BUTTON_WHEEL_UP:
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zoom_camera(1.0 / ZOOM_FACTOR) # Zoom in
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elif event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
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zoom_camera(ZOOM_FACTOR) # Zoom out
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func zoom_camera(factor):
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var new_fov = cam.fov * factor
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cam.fov = clamp(new_fov, MIN_FOV, MAX_FOV)
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