tech design

ROUGH-DESIGN.md

@@ -0,0 +1,101 @@
+ I plan to participate in a gamejam, duration of one month. I want do do a side scrolling shooter in godot. Since the game jam topic is not yet known, I can't do a proper content design. But I can prepare a systems design. Please create a DESIGN.md page with my topics, and keep as many options open for when the final topic is known, so it can be  customized. Here's what I want:
+
+# Level
+
+- multi-layered background parallax scrolling (without collision)
+- interactive elements layer
+- multi-layered foreground parallax scrolling (without collision)
+- repeating
+- might change as level progresses, need proper transition
+- fixed camera path, varying speed
+
+# Enemy Types
+- consist of composed sprites, each with an own behavior
+- A behavior can be one serial or many parallel sequences of events (traverse position/orientation path, fire a projectile, etc.)
+- either spawned and move freely, or part of the interactive elements layer of the level
+- may belong to a cluster
+- may spawn a collectible when destroyed
+
+# Enemy Clusters
+- contain of several instances of several enemy types, spawned at different intervals
+- destroying all enemies of a cluster awards points
+
+# Colllectibles
+- Add points
+- Primary weapon (fill empty slot, otherwise replace current slot)
+- Secondary weapon (replace)
+- Clear screen
+- Shield charge
+- Special weapon ammunition 
+- Squadron mate of a specific type
+
+# Hero
+- Has a level, influencing primary weapon
+- Collects points, point thresholds cause level up.
+- Has fixed number of primary weapon slots, player can toggle current primary weapon
+- Has initial number of shield charges (3). Getting hit reduces by one, leveling up increases by one.
+- Dies when hit without shield charges
+- Contains a max amount of squadron mates (4)
+- Keeps collectibles at the end of a mission, begins next mission with kept collectibles
+- Loses all collectibles on death
+- Has 3 retry counts for rebirth after death. Game over when exhausted.
+
+# Squadron mates
+- All of them are of the same type, the type is determined by the last collected one.
+- Maintain relative position to another squadron mate depending on type
+- Collide/consume with enemy particles, taking no damage
+
+## Types
+- Hug: close together on hero's nose
+- Orbit: circular motion around hero, mate id is phase offset
+- Line-Formation: equidistant formation on top and on bottom of hero
+- V-Formation: equidistant formation on back/top and on back/bottom of hero
+- Follow: fly towards front of oldest enemy on screen
+
+# Heros and Squadron mates
+- Fire current primary weapon forwards
+- Fire secondary weapon to another direction
+
+# Primary weapons
+- infinite ammo
+- many/fast/weak or few/slow/strong ballistic, constant speed
+- Flying only forward or seeking nearest enemy
+- Laser, appear/disappear filling entire row
+- Grenade cluster, fires fast, gets slower, big explosion on stop
+- Possibility to collide and consume enemy projectiles
+
+# Secondary weapons
+- infinite ammo
+- Always fire forwards
+- Projectiles don't collide with enemy projectiles
+- Fire additional projectiles depending on type
+
+## Types
+- Fire upwards if on top screen half, or downwards if on bottom screen half
+- Fire upwards towards positive diagonal if on top screen half, or downwards towards negative diagonal if on bottom screen half
+- Fire backwards
+
+# Special weapons
+- Can be chosen in shop
+- Have initial ammo, may be replenished by collectible
+
+## Special weapon types
+- Bomb (gravity does its thing, explode once on impact). Lots of ammo.
+- Crawler (gravity does its thing, crawls forwards following terrain contour, explodes once on enemy impact). Moderate ammo.
+- Napalm (gravity does its thing, huge horizontal spread and 1s burn on impact). Moderate ammo.
+- Black Hole (3s invulnerability period, pull enemies, destroyed upon impact with player). Few ammo.
+
+# Game loop
+- Logo, intro choreo, can be skipped
+- Menu (start/controls)
+- Mission loops
+- Rebirth retry / Game over / Normal victory / Secret victory choreo
+- Highscore
+
+## Mission loop
+- Shop for choosing one special weapon type for the next mission
+- Queue mission specific music, play mission specific intro choreo
+- Fade to actual gameplay
+- Queue boss music, play boss specific intro choreo
+- Mute music and play boss destruction vfx
+- Queue victory music, play generic mission outro choreo and fade out