olivierh59500 / game-maker-studio-shmup-engine

Open-Source Gradius Shmup Engine for Game Maker: Studio

Game-Maker-Studio-Shmup-Engine

Open-Source Gradius Shmup Engine for Game Maker: Studio This engine is heavily reliant on knowledge of GML. As long as all assets are replaced with your own, you may use this source code royalty-free. (Credit isn't required, but appreciated)

See it in action here: https://github.com/mysterypaint/Game-Maker-Studio-Shmup-Engine/releases

This engine features:

• Dynamic game state system (Opening credits, titlescreen, game mode, pausing, cutscene mode, game over mode, "START" mode [The START window before the player gains control])
• The standard Gradius arsenal and HUD
• Co-Op Mode
• A fully playable level
• Game Loop system (increasing difficulty; infinite play)
• Window resizing hotkeys (1, 2, 3, Alt+Enter, Holding Esc closes game)
• Tilemap loading (.oel OGMO Tilemap format: http://www.ogmoeditor.com/)
• Real-time tilemap modification and export
• Commented code (At least, I tried!)
• Title Screen menu, including customizing controls (Default controls use keyboard Z/X/C, UDLR, and Enter)
• Cheat codes on the pause screen

The engine also has many debug features (Press Q to toggle debug mode):

• E: Toggle cutscene game state
• R: Set X camera scroll to 0.3
• T: Increase the player's speed
• U: Trigger Kon.Code (Unlimited uses)
• I: Give Player 1 a Speedup
• C: Give Player 2 a Speedup
• Numpad +/-: Increment/decrement player lives
• Right/Left-click: Change tile value the mouse is currently hovered over
• Shift+Right-click: Set tile on top of mouse's value to 0
• P: Export the current level to a new .eol in the game's "working_directory"
• B: Kill the player (Suicide button)