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# ****************************************************************************************** | ||
# | ||
# raylib [shapes] example - following eyes | ||
# | ||
# Example originally created with raylib 2.5, last time updated with raylib 2.5 | ||
# | ||
# Example ported to Ruby by Wilson Silva (@wilsonsilva). Works with Raylib 4.5 | ||
# | ||
# Example licensed under an unmodified zlib/libpng license, which is an OSI-certified, | ||
# BSD-like license that allows static linking with closed source software | ||
# | ||
# Copyright (c) 2013-2023 Ramon Santamaria (@raysan5) | ||
# | ||
# ****************************************************************************************** | ||
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require 'bundler/setup' | ||
require 'raylib' | ||
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# Initialization | ||
# -------------------------------------------------------------------------------------- | ||
SCREEN_WIDTH = 800 | ||
SCREEN_HEIGHT = 450 | ||
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Raylib.init_window(SCREEN_WIDTH, SCREEN_HEIGHT, 'raylib [shapes] example - following eyes') | ||
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sclera_left_position = Raylib::Vector2.create(Raylib.get_screen_width/2.0 - 100.0, Raylib.get_screen_height/2.0) | ||
sclera_right_position = Raylib::Vector2.create(Raylib.get_screen_width/2.0 + 100.0, Raylib.get_screen_height/2.0) | ||
sclera_radius = 80 | ||
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iris_radius = 24 | ||
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Raylib.set_target_fps(60) | ||
# -------------------------------------------------------------------------------------- | ||
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# Main game loop | ||
until Raylib.window_should_close # Detect window close button or ESC key | ||
# Update | ||
# ---------------------------------------------------------------------------------- | ||
iris_left_position = Raylib.get_mouse_position | ||
iris_right_position = Raylib.get_mouse_position | ||
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# Check not inside the left eye sclera | ||
unless Raylib.check_collision_point_circle(iris_left_position, sclera_left_position, sclera_radius - 20) | ||
dx = iris_left_position.x - sclera_left_position.x | ||
dy = iris_left_position.y - sclera_left_position.y | ||
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angle = Math.atan2(dy, dx) | ||
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dxx = (sclera_radius - iris_radius)*Math.cos(angle) | ||
dyy = (sclera_radius - iris_radius)*Math.sin(angle) | ||
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iris_left_position.x = sclera_left_position.x + dxx | ||
iris_left_position.y = sclera_left_position.y + dyy | ||
end | ||
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# Check not inside the right eye sclera | ||
unless Raylib.check_collision_point_circle(iris_right_position, sclera_right_position, sclera_radius - 20) | ||
dx = iris_right_position.x - sclera_right_position.x | ||
dy = iris_right_position.y - sclera_right_position.y | ||
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angle = Math.atan2(dy, dx) | ||
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dxx = (sclera_radius - iris_radius)*Math.cos(angle) | ||
dyy = (sclera_radius - iris_radius)*Math.sin(angle) | ||
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iris_right_position.x = sclera_right_position.x + dxx | ||
iris_right_position.y = sclera_right_position.y + dyy | ||
end | ||
# ---------------------------------------------------------------------------------- | ||
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# Draw | ||
# ---------------------------------------------------------------------------------- | ||
Raylib.begin_drawing | ||
Raylib.clear_background(Raylib::RAYWHITE) | ||
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Raylib.draw_circle_v(sclera_left_position, sclera_radius, Raylib::LIGHTGRAY) | ||
Raylib.draw_circle_v(iris_left_position, iris_radius, Raylib::BROWN) | ||
Raylib.draw_circle_v(iris_left_position, 10, Raylib::BLACK) | ||
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Raylib.draw_circle_v(sclera_right_position, sclera_radius, Raylib::LIGHTGRAY) | ||
Raylib.draw_circle_v(iris_right_position, iris_radius, Raylib::DARKGREEN) | ||
Raylib.draw_circle_v(iris_right_position, 10, Raylib::BLACK) | ||
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Raylib.draw_fps(10, 10) | ||
Raylib.end_drawing | ||
# ---------------------------------------------------------------------------------- | ||
end | ||
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# De-Initialization | ||
# -------------------------------------------------------------------------------------- | ||
Raylib.close_window # Close window and OpenGL context | ||
# -------------------------------------------------------------------------------------- |