68 lines
2.0 KiB
GDScript
68 lines
2.0 KiB
GDScript
extends Node2D
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const PAD_SPEED = 150
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const INITIAL_BALL_SPEED = 80
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var ball_speed = INITIAL_BALL_SPEED
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var screen_size = Vector2(640, 400)
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# Default ball direction.
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var direction = Vector2.LEFT
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var pad_size = Vector2(8, 32)
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@onready var ball = $Ball
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@onready var left_paddle = $LeftPaddle
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@onready var right_paddle = $RightPaddle
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func _ready():
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screen_size = get_viewport_rect().size # Get actual size.
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pad_size = left_paddle.get_texture().get_size()
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func _process(delta):
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# Get ball position and pad rectangles.
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var ball_pos = ball.get_position()
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var left_rect = Rect2(left_paddle.get_position() - pad_size * 0.5, pad_size)
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var right_rect = Rect2(right_paddle.get_position() - pad_size * 0.5, pad_size)
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# Integrate new ball postion.
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ball_pos += direction * ball_speed * delta
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# Flip when touching roof or floor.
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if (ball_pos.y < 0 and direction.y < 0) or (ball_pos.y > screen_size.y and direction.y > 0):
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direction.y = -direction.y
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# Flip, change direction and increase speed when touching pads.
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if (left_rect.has_point(ball_pos) and direction.x < 0) or (right_rect.has_point(ball_pos) and direction.x > 0):
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direction.x = -direction.x
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ball_speed *= 1.1
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direction.y = randf() * 2.0 - 1
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direction = direction.normalized()
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# Check gameover.
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if ball_pos.x < 0 or ball_pos.x > screen_size.x:
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ball_pos = screen_size * 0.5
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ball_speed = INITIAL_BALL_SPEED
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direction = Vector2(-1, 0)
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ball.set_position(ball_pos)
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# Move left pad.
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var left_pos = left_paddle.get_position()
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if left_pos.y > 0 and Input.is_action_pressed("left_move_up"):
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left_pos.y += -PAD_SPEED * delta
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if left_pos.y < screen_size.y and Input.is_action_pressed("left_move_down"):
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left_pos.y += PAD_SPEED * delta
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left_paddle.set_position(left_pos)
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# Move right pad.
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var right_pos = right_paddle.get_position()
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if right_pos.y > 0 and Input.is_action_pressed("right_move_up"):
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right_pos.y += -PAD_SPEED * delta
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if right_pos.y < screen_size.y and Input.is_action_pressed("right_move_down"):
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right_pos.y += PAD_SPEED * delta
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right_paddle.set_position(right_pos)
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