#ifndef GAME_LOGIC_H
#define GAME_LOGIC_H

#include "game_state.h"

void update_snake(GameState &state);
bool check_collision_self(GameState &state);
bool check_collision_apples(GameState &state);
bool check_collision_apples_rotten(GameState &state);
bool check_collision_apples_cursed(GameState &state);
void spawn_apples(GameState &state);
void spawn_apples_rotten(GameState &state);
void spawn_apples_cursed(GameState &state);
void tick_status_effects(GameState &state);

uint8_t calculate_intensity_31(const GameState &state);
uint16_t calculate_timer_freq_mhz(const GameState &state);
uint16_t calculate_timer_reload(const GameState &state);

// Hard-mode temporary barriers
void reset_barriers(GameState &state);              // Main thread (init_game)
void tick_barriers_frame(GameState &state);         // VBlank IRQ: advances lifetimes
void spawn_barriers(GameState &state);              // Timer IRQ: spawns when cooldown expired
bool check_collision_barriers(GameState &state);    // Timer IRQ: head vs. active barrier
bool is_barrier_cell(const GameState &state, int x, int y, bool include_warning);
uint16_t calculate_barrier_interval_frames(const GameState &state);
uint8_t calculate_barrier_max_length(const GameState &state);
uint8_t calculate_barrier_max_batch(const GameState &state);

#endif