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__4               = 4,
    Action_OuterRotateLeft  = 5,
    Action_OuterRotateRight = 6,
    Action_Slide            = 7,
    Action_Speed2           = 8,
    Action_Speed3           = 9,
    Action_Slow             = 10,
} action_t;

typedef enum {
    Fadeout_None    = 0,
    Fadeout_1       = 1,
    Fadeout_2       = 2,
    Fadeout_3       = 3,
} fadeout_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;
    fadeout_t fadeout;
} rectmeta_t;

typedef struct {
    float speed_factor;
    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 156

#define RECT_SPEED 50 /* px/tempo */

typedef struct {
    float w, h;     /* px */
    float y_init;   /* px */
    float x, y;     /* px */
    float r;        /* rad */
    int opacity;    /* 0..256 */
    rectmeta_t const *meta;
} rect_t;

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;
    /* Time sent during finale */
    float time_finale;

    /* 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, int rep1, int rep2);

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

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

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

void render_glow(int x, int y, int r1, int r2, int c1, int c2, float angle,
    float opacity);

void radial_fadeout(int x, int y, int r1, int r2, int c);

//---
// 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, int r);

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_1, level1_2, level1_3, level1_4, level1_5;
extern level_t level2_1, level2_2, level2_3, level2_4, level2_5, level2_6;
extern level_t level3_1, level3_2, level3_3, level3_4, level3_5;
extern level_t level4_1, level4_2, level4_3, level4_4, level4_5, level4_6;
extern level_t level5_1, level5_2, level5_3, level5_4, level5_5, level5_6;
extern level_t level6_1, level6_2, level6_3, level6_4, level6_5, level6_6;
extern level_t level7_1, level7_2, level7_3, level7_4, level7_5, level7_6;
extern level_t level8_1, level8_2, level8_3, level8_4, level8_5, level8_6,
               level8_7, level8_8, level8_9;

extern episode_t episodes[];
extern int episode_count;

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

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