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// SPDX-License-Identifier: ISC
// SPDX-FileCopyrightText: 2024 Matthew Wozniak <me@woz.blue>

#ifndef ENGINEAPI_H
#define ENGINEAPI_H

#define VENGINE_SERVER_INTERFACE_VERSION "VEngineServer021"
#define VENGINE_CLIENT_INTERFACE_VERSION "VEngineClient013"
#define VENGINE_LAUNCHER_INTERFACE_VERSION "VENGINE_LAUNCHER_API_VERSION004"
#define VENGINE_TOOL_INTERFACE_VERSION	"VENGINETOOL003"

#include "intdef.h"

typedef void * (*createinterface_func)(const char *name, int *ret);

struct engserver {
	struct {
		usize _pad[36];
		void (*__thiscall server_command)(struct engserver *this, const char *str);
	} *vt;
};

struct engclient {
	struct {
		usize _pad[75];
		void (*__thiscall is_playing_demo)(struct engclient *this);
	} *vt;
};

struct engineapi {
	struct {
		usize _pad[7];
		void *set_engine_window; 
	} *vt;
};

struct enginetools {
	struct {
		usize _pad[64];
		void *is_recording_movie;
	} *vt;
};

struct movieinfo {
	char	name[256];
	int		curframe;
	int		type;
	int		jpeg_quality;
};

struct videomode {
	struct {
		usize _pad[22];
		void (*__thiscall write_movie_frame)(struct videomode *this,
				struct movieinfo *info);
	} *vt;
};

struct demoplayer {
	struct {
		void *_destructor;
		void * (*__thiscall get_demo_file)(struct demoplayer *this);
		int (*__thiscall get_playback_tick)(struct demoplayer *this);
		int (*__thiscall get_total_ticks)(struct demoplayer *this);
		void *_whatisthisihavenoidea; // TODO
		bool (*__thiscall start_playback)(struct demoplayer *this,
				const char *filename, bool as_time_demo);
		bool (*__thiscall is_playing_back)(struct demoplayer *this);
		bool (*__thiscall is_playback_paused)(struct demoplayer *this);
		bool (*__thiscall is_playing_time_demo)(struct demoplayer *this);
		bool (*__thiscall is_skipping)(struct demoplayer *this);
		bool (*__thiscall can_skip_backwards)(struct demoplayer *this);
		void (*__thiscall set_playback_time_scale)(struct demoplayer *this,
				float timescale);
		float (*__thiscall get_playback_time_scale)(struct demoplayer *this);
		void (*__thiscall pause_playback)(struct demoplayer *this,
				float seconds);
		void (*__thiscall skip_to_tick)(struct demoplayer *this, int tick,
				bool relative, bool pause);
		void (*__thiscall resume_playback)(struct demoplayer *this);
		void (*__thiscall stop_playback)(struct demoplayer *this);
		void (*__thiscall interpolate_viewpoint)(struct demoplayer *this);
	} *vt;
};

#ifndef NO_EXTERNS
extern struct engserver *engserver;
extern struct engclient *engclient;
extern struct engineapi *engineapi;
extern struct enginetools *enginetools;
extern struct demoplayer *demoplayer;
extern struct videomode **videomode;
extern struct movieinfo *movieinfo;
extern void (*cbuf_addtext)(char *);
#endif

// initializes required engine apis. returns false on error.
bool api_init(void);

#endif

// vi: sw=4 ts=4 noet tw=80 cc=80