Duet/src/duet.h

#pragma once

#include <gint/defs/types.h>
#include <stdint.h>
#include <stdbool.h>

#include <gint/display.h>

#define __BSD_VISIBLE 1
#include <math.h>

//---
// Level structures
//---

typedef enum {
    Shape_Square       = 0,
    Shape_SmallBar     = 2,
    Shape_MediumBar    = 3,
    Shape_NormalBar    = 4,
    Shape_LongBar      = 5,
    Shape_HugeBar      = 6,
    Shape_LongVertical = 7,
} shape_t;

typedef enum {
    Action_Normal           = 0,
    Action_RotateLeft       = 1,
    Action_RotateRight      = 2,
    Action_Speed1           = 3,
    Action_FadeOut          = 4,
    Action_OuterRotateLeft  = 5,
    Action_OuterRotateRight = 6,
    Action_Slide            = 7,
    Action_Speed2           = 8,
    Action_Speed3           = 9,
} action_t;

typedef enum {
    Position_Left   = 0,
    Position_Right  = 1,
    Position_Middle = 2
} position_t;

typedef struct {
    int time;
    shape_t shape;
    position_t position;
    action_t action;
} rectmeta_t;

typedef struct {
    float tempo;
    const char *message;
    int block_count;
    rectmeta_t *blocks;
} level_t;

typedef struct {
    char const *name;
    int level_count;
    level_t **levels;
} episode_t;

//---
// Game
//---

#define PLAYER_X 60
#define PLAYER_R 40
#define PLAYER_SIZE 8
#define CORRIDOR_SIZE 150

#define RECT_SPEED 50 /* px/tempo */

typedef struct {
    float w, h;     /* px */
    float x, y;     /* px */
    float r;        /* rad */
    rectmeta_t const *meta;
} rect_t;

#define RECT_TABLE_SIZE     20

typedef struct game {
    /* Current level */
    level_t const *level;
    /* List of rectangles (same amount as lv->block_count) */
    rect_t *rects;
    int rect_count;

    /* Current player rotation */
    float player_rota;

    /* Current level time (determines the position of all objects) */
    float time;
    /* Time spent during the death freeze animation */
    float time_dead;
    /* Time spent during level transition */
    float time_transition;
    /* Time spent during episode transition */
    float time_episode_transition;

    /* Forced rotation speed for level transitions and death rewind */
    float forced_player_rota;
} game_t;

//---
// Rendering
//---

void dcircle(int x, int y, int r, int color, bool fill);

void dtriangle(int x1, int y1, int x2, int y2, int x3, int y3, int color);

void drectoid(rect_t const *r, float extra_size, int color);

void render_player(int x, int y, float angle);

//---
// Duet Text
//---

/* (x,y) is screen as usual, but align is relative to rotated text */
void duet_text_opt(int x, int y, int fg, int bg, int halign, int valign,
    char const *str, int size);

//---
// Physics
//---

void player_position(float angle,
    float *x1, float *y1, float *x2, float *y2);

bool player_collision(game_t const *game);

bool rect_circle_collide(rect_t const *r, int cx, int cy, int cr);

void rect_load(rect_t *r, rectmeta_t const *meta);

void rect_physics(rect_t *r, rectmeta_t const *meta, float time);

//---
// Levels
//---

extern level_t  level1,  level2,  level3,  level4;
extern level_t  level5,  level6,  level7,  level8;
extern level_t  level9, level10, level11, level12;
extern level_t level13, level14, level15, level16;
extern level_t level17, level18, level19, level20;
extern level_t level21, level22, level23, level24;
extern level_t level25, level26, level27, level28;

extern episode_t episodes[];
extern int episode_count;

//---
// Menu
//---

/* Main menu, sets selected level */
int main_menu(int *episode, int *level);