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Add the textures background scrolling example
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# ****************************************************************************************** | ||
# | ||
# raylib [textures] example - Background scrolling | ||
# | ||
# Example originally created with raylib 2.0, 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) 2019-2023 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 [textures] example - background scrolling') | ||
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# NOTE: Be careful, background width must be equal or bigger than screen width | ||
# if not, texture should be draw more than two times for scrolling effect | ||
background = Raylib.load_texture(File.join(__dir__, 'resources/cyberpunk_street_background.png')) | ||
midground = Raylib.load_texture(File.join(__dir__, 'resources/cyberpunk_street_midground.png')) | ||
foreground = Raylib.load_texture(File.join(__dir__, 'resources/cyberpunk_street_foreground.png')) | ||
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scrolling_back = 0.0 | ||
scrolling_mid = 0.0 | ||
scrolling_fore = 0.0 | ||
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Raylib.set_target_fps(60) # Set our game to run at 60 frames-per-second | ||
# -------------------------------------------------------------------------------------- | ||
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# Main game loop | ||
until Raylib.window_should_close # Detect window close button or ESC key | ||
# Update | ||
# ---------------------------------------------------------------------------------- | ||
scrolling_back -= 0.1 | ||
scrolling_mid -= 0.5 | ||
scrolling_fore -= 1.0 | ||
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# NOTE: Texture is scaled twice its size, so it sould be considered on scrolling | ||
scrolling_back = 0 if scrolling_back <= -background.width * 2 | ||
scrolling_mid = 0 if scrolling_mid <= -midground.width * 2 | ||
scrolling_fore = 0 if scrolling_fore <= -foreground.width * 2 | ||
# ---------------------------------------------------------------------------------- | ||
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# Draw | ||
# ---------------------------------------------------------------------------------- | ||
Raylib.begin_drawing | ||
Raylib.clear_background(Raylib.get_color(0x052c46ff)) | ||
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# Draw background image twice | ||
# NOTE: Texture is scaled twice its size | ||
Raylib.draw_texture_ex(background, Raylib::Vector2.create(scrolling_back, 20), 0.0, 2.0, Raylib::WHITE) | ||
Raylib.draw_texture_ex(background, Raylib::Vector2.create(background.width * 2 + scrolling_back, 20), 0.0, 2.0, Raylib::WHITE) | ||
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# Draw midground image twice | ||
Raylib.draw_texture_ex(midground, Raylib::Vector2.create(scrolling_mid, 20), 0.0, 2.0, Raylib::WHITE) | ||
Raylib.draw_texture_ex(midground, Raylib::Vector2.create(midground.width * 2 + scrolling_mid, 20), 0.0, 2.0, Raylib::WHITE) | ||
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# Draw foreground image twice | ||
Raylib.draw_texture_ex(foreground, Raylib::Vector2.create(scrolling_fore, 70), 0.0, 2.0, Raylib::WHITE) | ||
Raylib.draw_texture_ex(foreground, Raylib::Vector2.create(foreground.width * 2 + scrolling_fore, 70), 0.0, 2.0, Raylib::WHITE) | ||
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Raylib.draw_text('BACKGROUND SCROLLING & PARALLAX', 10, 10, 20, Raylib::RED) | ||
Raylib.draw_text('(c) Cyberpunk Street Environment by Luis Zuno (@ansimuz)', SCREEN_WIDTH - 330, SCREEN_HEIGHT - 20, 10, Raylib::RAYWHITE) | ||
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Raylib.end_drawing | ||
# ---------------------------------------------------------------------------------- | ||
end | ||
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# De-Initialization | ||
# -------------------------------------------------------------------------------------- | ||
Raylib.unload_texture(background) # Unload background texture | ||
Raylib.unload_texture(midground) # Unload midground texture | ||
Raylib.unload_texture(foreground) # Unload foreground texture | ||
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Raylib.close_window # Close window and OpenGL context | ||
# -------------------------------------------------------------------------------------- |