townengine/src/twn_engine_context_c.h

#ifndef TWN_ENGINE_CONTEXT_C_H
#define TWN_ENGINE_CONTEXT_C_H

#include "twn_context.h"
#include "twn_textures_c.h"
#include "twn_engine_api.h"
#include "twn_input.h"
#include "rendering/twn_rendering_c.h"

#include <SDL2/SDL.h>

#include <stdbool.h>
#include <stdint.h>


typedef struct engine_context {
    /* user code facing context */
    t_ctx game;

    /* the program's actual argc and argv */
    int argc;
    char **argv;

    struct primitive_2d *render_queue_2d;
    struct mesh_batch_item *uncolored_mesh_batches;
    struct text_cache text_cache;
    struct texture_cache texture_cache;

    struct audio_channel_item *audio_channels;
    SDL_AudioDeviceID audio_device;
    int audio_stream_frequency;
    SDL_AudioFormat audio_stream_format;
    uint8_t audio_stream_channel_count;

    /* main loop machinery */
    int64_t clocks_per_second;
    int64_t prev_frame_time;
    int64_t desired_frametime;  /* how long one tick should be */
    int64_t frame_accumulator;
    int64_t delta_averager_residual;
    int64_t time_averager[4];

    SDL_GLContext *gl_context;
    SDL_Window *window;
    uint32_t window_id;

    bool resync_flag;
    bool was_successful;
} t_engine_ctx;

TWN_API extern t_engine_ctx ctx;

#endif