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

#include "system/keyboard.h"

struct RabbitPosition {
  int rabbitPosition[2];
  int oldRabbitPosition[2];
  int rabbitLimits[2][2];
  signed char rabbitVelocity[2];

  int mousePosition[2];
  int oldMousePosition[2];

  int mouseDotPosition[2];
  int oldMouseDotPosition[2];

  int mouseAngle;
};

struct RabbitWeaponry {
  char cooldown;
};

struct BulletPosition {
  // 1 if the bullet should be rendered
  char isActive;
  // sweep up the bullet from the display
  char willBeInactive;
  int x, y;
  int oldX, oldY;

  signed int velocityXSteps[2], velocityYSteps[2];
  int velocityStep;
};

struct EnemyPosition {
  char isActive;

  char willBeInactive;
  char wasKilled;

  int enemyPosition[2];
  int oldEnemyPosition[2];

  int enemyMoveDelayStep;
  int enemyFireDelayStep;
};

void calculateTargetAngle(struct RabbitPosition*, struct MouseStatus*);
void captureAndLimitMousePosition(struct RabbitPosition*, struct MouseStatus*);
void handleRabbitMovement(struct RabbitPosition*, struct KeyboardKeydownState*);
void handleEnemyMovement(struct EnemyPosition[], struct RabbitPosition*);