GORPH

Galactic Organic Robot Phalanx

A native fixed-screen shooter in early-80s style, written in ANSI C89 with SDL2 - presented in the look of a C64, complete with boot screen, raster colors, multicolor sprites and demoscene effects.

The Gorphian phalanx attacks in four waves. Survive all four and the campaign starts over - faster and more merciless.

Missions

1. Astro Battles - alien formation behind shields
2. Laser Attack - gun squads with dive-bombing fighters
3. Space Warp - spiraling objects in a star tunnel
4. Flag Ship - the flagship, dismantled piece by piece

Building

Requires SDL2 (sdl2-config in the path):

make
./gorph

Controls

Key	Action
Arrows / WASD	Move
Space	Fire
F11	Fullscreen
Esc	Quit

A gamepad is detected automatically.

Debug/cheat keys are off on a normal start. ./gorph -cheat enables them: 1-4 mission 1-4, 5 restart title intro, 6 flagship kill, 8 level-8 outro, 9 restart boot screen, N next mission including rank, 0 in the credits: jump close to the end.

Features

• C64 boot screen with typewriter prompt, then a seamless zoom into the game
• Intro with starfield rotation, logo fly-in, speech and an orbiting robot with motion blur
• Attract mode: after a while a demo plays itself (Astro Battles and Space Warp in alternation)
• Lip-synced typewriter outros with speech samples
• Software VIC with 16 sprites, screen shake, TV glitch transitions
• Synthesizer sound effects plus sampled speech
• Amiga-demo credits (key C on the title screen): starfield morph, sine scroller with copper fill and floor mirror, lens flares, an embedded ProTracker MOD player, an orbiting demon and a finale in which a dropped rock shatters the mirror and a sponge arm wipes the screen clean

Technology

Game logic, renderer (text and bitmap multicolor modes) and sound synthesis are implemented from scratch; all assets are embedded in the source. No foreign program code included.

Tools

tools/wiperec.c records the sponge path for the credits finale:

make wiperec
./wiperec tools/wipe_bg.bmp

Hold the left mouse button to wipe, R restarts, D toggles the leftover markers, F toggles fullscreen, S saves to src/wipepath.h and exits. Rebuild afterwards and the game plays back the recorded path.