dttr_config.h

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#ifndef DTTR_CONFIG_H
#define DTTR_CONFIG_H
 
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <windows.h>
 
#include <SDL3/SDL.h>
 
#define WINDOW_WIDTH 640
#define WINDOW_HEIGHT 480
 
typedef enum {
    DTTR_SCALING_MODE_LETTERBOX = 0,
    DTTR_SCALING_MODE_STRETCH = 1,
    DTTR_SCALING_MODE_INTEGER = 2,
} DTTR_ScalingMode;
 
typedef enum {
    DTTR_SCALING_METHOD_PRESENT = 0,
    DTTR_SCALING_METHOD_LOGICAL = 1,
} DTTR_ScalingMethod;
 
typedef enum {
    DTTR_MINIDUMP_NORMAL = 0,
    DTTR_MINIDUMP_DETAILED = 1,
} DTTR_MinidumpType;
 
#define DTTR_DRIVER_AUTO "auto"
#define DTTR_DRIVER_VULKAN "vulkan"
#define DTTR_DRIVER_DIRECT3D12 "direct3d12"
#define DTTR_DRIVER_DIRECT3D12_SHORT "d3d12"
#define DTTR_DRIVER_OPENGL "opengl"
 
typedef enum {
    DTTR_GRAPHICS_API_AUTO = 0,
    DTTR_GRAPHICS_API_VULKAN = 1,
    DTTR_GRAPHICS_API_DIRECT3D12 = 2,
    DTTR_GRAPHICS_API_OPENGL = 3,
} DTTR_GraphicsApi;
 
typedef enum {
    DTTR_VERTEX_PRECISION_NATIVE = 0,
    DTTR_VERTEX_PRECISION_SUBPIXEL = 1,
} DTTR_VertexPrecision;
 
#define DTTR_GAMEPAD_MAPPING_NONE (-1)
#define DTTR_GAMEPAD_TRIGGER_THRESHOLD 300
 
#define DTTR_GAMEPAD_SOURCE_TRIGGER_LEFT (SDL_GAMEPAD_BUTTON_COUNT)
#define DTTR_GAMEPAD_SOURCE_TRIGGER_RIGHT (SDL_GAMEPAD_BUTTON_COUNT + 1)
#define DTTR_GAMEPAD_SOURCE_COUNT (SDL_GAMEPAD_BUTTON_COUNT + 2)
 
#define DTTR_CONFIG_SCHEMA_MAJOR_VERSION 1
#define DTTR_CONFIG_DISABLED_MODS_MAX 32
#define DTTR_MODS_SHADOW_PREFIX "_dttr_hot_"
 
#define DTTR_GAMEPAD_AXIS_MAPPING_COUNT 3
#define DTTR_GAMEPAD_AXIS_IDX_STICK_X 0
#define DTTR_GAMEPAD_AXIS_IDX_STICK_Y 1
#define DTTR_GAMEPAD_AXIS_IDX_CAMERA_RZ 2
 
#define PCDOGS_GAMEPAD_IDX_UP 0
#define PCDOGS_GAMEPAD_IDX_DOWN 1
#define PCDOGS_GAMEPAD_IDX_LEFT 2
#define PCDOGS_GAMEPAD_IDX_RIGHT 3
#define PCDOGS_GAMEPAD_IDX_POV_UP 4
#define PCDOGS_GAMEPAD_IDX_POV_DOWN 5
#define PCDOGS_GAMEPAD_IDX_BTN_0 6
#define PCDOGS_GAMEPAD_IDX_BTN_1 7
#define PCDOGS_GAMEPAD_IDX_BTN_2 8
#define PCDOGS_GAMEPAD_IDX_BTN_3 9
#define PCDOGS_GAMEPAD_IDX_BTN_4 10
#define PCDOGS_GAMEPAD_IDX_BTN_5 11
#define PCDOGS_GAMEPAD_IDX_BTN_6 12
#define PCDOGS_GAMEPAD_IDX_BTN_7 13
#define PCDOGS_GAMEPAD_IDX_BTN_8 14
#define PCDOGS_GAMEPAD_IDX_BTN_9 15
#define PCDOGS_GAMEPAD_IDX_BTN_10 16
#define PCDOGS_GAMEPAD_IDX_BTN_11 17
#define PCDOGS_GAMEPAD_IDX_BTN_12 18
 
typedef struct {
    int schema_major_version;
    int log_level;
    DTTR_MinidumpType minidump_type;
    bool show_crash_popup;
    char log_file_path[MAX_PATH];
    char pcdogs_path[MAX_PATH];
    char saves_path[MAX_PATH];
    bool skip_intro_movies;
    DTTR_ScalingMode scaling_fit;
    DTTR_ScalingMethod scaling_method;
    DTTR_GraphicsApi graphics_api;
    DTTR_VertexPrecision vertex_precision;
    bool sprite_smooth;
    SDL_GPUFilter present_filter;
    int window_width;
    int window_height;
    int msaa_samples;
    bool texture_upload_sync;
    bool generate_texture_mipmaps;
    bool fullscreen;
    bool hot_reload;
    int disabled_mod_count;
    char disabled_mods[DTTR_CONFIG_DISABLED_MODS_MAX][MAX_PATH];
    float mss_sample_gain;
    float mss_sample_preemphasis;
    bool gamepad_enabled;
    int gamepad_index;
    int gamepad_button_map[DTTR_GAMEPAD_SOURCE_COUNT];
    int gamepad_axes[DTTR_GAMEPAD_AXIS_MAPPING_COUNT];
    int gamepad_axis_deadzone[DTTR_GAMEPAD_AXIS_MAPPING_COUNT];
} DTTR_Config;
 
extern DTTR_Config dttr_config;
 
typedef enum {
    DTTR_CONFIG_VALUE_BOOL = 0,
    DTTR_CONFIG_VALUE_SCALING_FIT = 1,
    DTTR_CONFIG_VALUE_SCALING_METHOD = 2,
    DTTR_CONFIG_VALUE_GRAPHICS_API = 3,
    DTTR_CONFIG_VALUE_INT = 4,
    DTTR_CONFIG_VALUE_FLOAT = 5,
    DTTR_CONFIG_VALUE_PRESENT_FILTER = 6,
    DTTR_CONFIG_VALUE_LOG_LEVEL = 7,
    DTTR_CONFIG_VALUE_MINIDUMP_TYPE = 8,
    DTTR_CONFIG_VALUE_STRING = 9,
    DTTR_CONFIG_VALUE_VERTEX_PRECISION = 10,
    DTTR_CONFIG_VALUE_GAMEPAD_AXIS = 11,
} DTTR_ConfigValueType;
 
typedef struct {
    const char *section;
    const char *key;
    ptrdiff_t offset;
    size_t size;
    DTTR_ConfigValueType value_type;
} DTTR_ConfigFieldSpec;
 
typedef struct {
    const char *label;
    int value;
} DTTR_ConfigChoice;
 
typedef enum {
    DTTR_CONFIG_CHOICES_LOG_LEVEL,
    DTTR_CONFIG_CHOICES_MINIDUMP_TYPE,
    DTTR_CONFIG_CHOICES_GRAPHICS_API,
    DTTR_CONFIG_CHOICES_SCALING_FIT,
    DTTR_CONFIG_CHOICES_SCALING_METHOD,
    DTTR_CONFIG_CHOICES_PRESENT_FILTER,
    DTTR_CONFIG_CHOICES_VERTEX_PRECISION,
    DTTR_CONFIG_CHOICES_GAMEPAD_AXIS,
    DTTR_CONFIG_CHOICES_GAME_ACTION,
} DTTR_ConfigChoiceList;

const char *DTTR_Config_GraphicsAPIName(DTTR_GraphicsApi api);
 
int DTTR_Config_SchemaCount();
const DTTR_ConfigFieldSpec *DTTR_Config_SchemaGet(int index);
bool DTTR_Config_FieldChanged(
    const DTTR_Config *current,
    const DTTR_Config *base,
    const DTTR_ConfigFieldSpec *spec
);
bool DTTR_Config_SchemaChanged(const DTTR_Config *current, const DTTR_Config *base);
 
int DTTR_Config_ChoiceCount(DTTR_ConfigChoiceList list);
const DTTR_ConfigChoice *DTTR_Config_ChoiceGet(DTTR_ConfigChoiceList list, int index);
const DTTR_ConfigChoice *DTTR_Config_Choices(DTTR_ConfigChoiceList list, int *count);
 
void DTTR_Config_ClearGamepadButtonMap(int *map);
 
bool DTTR_Config_IsModDisabled(const DTTR_Config *config, const char *mod_filename);
bool DTTR_Config_SetModEnabled(
    DTTR_Config *config,
    const char *mod_filename,
    bool enabled
);
bool DTTR_Config_DisabledModsChanged(const DTTR_Config *current, const DTTR_Config *base);

void DTTR_Config_SetDefaults(DTTR_Config *config);

bool DTTR_Config_Load(const char *filename);

const char *DTTR_Config_LastError();

bool DTTR_Config_Save(const char *filename, const DTTR_Config *config);
 
#define DTTR_CONFIG_FILENAME "dttr.json"
 
#endif