dos-vga-arena-shooter-game/const.h

#ifndef __CONST_H__
#define __CONST_H__

#include "system/vga.h"

#define TILE_SIZE (20)
#define ARENA_WIDTH_TILES (10)
#define ARENA_HEIGHT_TILES (10)
#define COLLISION_GRID_SIZE (ARENA_WIDTH_TILES / 2 * TILE_SIZE)

#define ARENA_LEFT_EDGE (TILE_SIZE)
#define ARENA_TOP_EDGE (TILE_SIZE)
#define ARENA_RIGHT_EDGE (ARENA_WIDTH_TILES - 1) * TILE_SIZE
#define ARENA_BOTTOM_EDGE (ARENA_WIDTH_TILES - 1) * TILE_SIZE

#define MOUSE_DISTANCE (32)

#define RABBIT_MOTION_DRAG (2)
#define RABBIT_MOTION_ACCELERATION (5)
#define RABBIT_MOTION_MAX_SPEED (10)
#define RABBIT_MOTION_VELOCITY_DECAY (5)

#define RABBIT_BULLET_LIMIT (9)
#define RABBIT_BULLET_VELOCITY ((RABBIT_MOTION_ACCELERATION / 2) + 1)
#define RABBIT_BULLET_COOLDOWN (10)
#define RABBIT_BULLET_HEIGHT_START (8)

#define RABBIT_BULLET_SHOTGUN_SPREAD (15)

#define RABBIT_HEALTH_MAX (100)

#define MOUSE_LIMIT_TOP (TILE_SIZE)
#define MOUSE_LIMIT_BOTTOM ((ARENA_HEIGHT_TILES - 1) * TILE_SIZE - 1)
#define MOUSE_LIMIT_LEFT (TILE_SIZE)
#define MOUSE_LIMIT_RIGHT ((ARENA_WIDTH_TILES - 1) * TILE_SIZE - 1)

#define RAD2DEG (180/3.14159)
#define DEG2RAD (3.14159/180)

#define ENEMY_MAX_COUNT (50)
#define ENEMY_BULLET_LIMIT (ENEMY_MAX_COUNT / 5)

#define ENEMY_MOVE_SPEED (1)
#define ENEMY_MOVE_DELAY (3)
#define ENEMY_BULLET_VELOCITY (RABBIT_BULLET_VELOCITY - 1)

#define ENEMY_FIRE_MIN_DELAY (50)
#define ENEMY_FIRE_VARIABLE_DELAY (60)

#define ENEMY_BULLET_DAMAGE (3)
#define ENEMY_COLLISION_DAMAGE (6)
#define ENEMY_HIT_POINT_DIFFICULTY_INCREASE_EVERY (4)

#define BASE_ENEMY_SPAWN_COOLDOWN (30)
#define DIFFICULTY_SPAWN_COOLDOWN_REDUCTION (1)
#define MINIMUM_ENEMY_SPAWN_COOLDOWN (3)
#define VARIABLE_ENEMY_SPAWN_COOLDOWN (10)

#define POWERUP_RESPAWN_COOLDOWN_PER_LEVEL (10)

#define SHOTGUN_ROUNDS_PER_LEVEL (25)
#define MAX_DIFFICULTY (40)
#define BASE_KILLS (20)
#define KILLS_NEEDED_FOR_NEXT_LEVEL_MULTIPLIER (1.06)
#define HIT_POINT_DIFFICULTY_INCREASE_DELAY (4)

#define WEAPON_TYPE_SINGLE_SHOT_GUN (0)
#define WEAPON_TYPE_SPREAD_SHOT_GUN (1)
#define WEAPON_TYPE_BEAM_SHOT_GUN (2)

#define POWERUP_TYPE_SHOTGUN (1)
#define POWERUP_TYPE_BEAM_WEAPON (2)

#define KNOCKBACK_DISTANCE (3)

#define HEALTH_UPGRADE_GAIN (10)

extern int difficultyBands[];
extern int hitPointRanges[MAX_DIFFICULTY][4];

extern int damageUpgradeCosts[];
extern int healthUpgradeCosts[];
extern int healthGainUpgradeCosts[];

extern struct SpriteBounds bounds;
extern struct CompiledSpriteRender rabbit,
  mouse,
  bullet,
  enemy,
  enemyBullet,
  shotgun,
  beam;

void buildDifficultyBands();
void buildHitPointRages();

#endif