vg_input.h

   1 #pragma once
   2
   3 /* Copyright (C) 2021-2024 Harry Godden (hgn) - All Rights Reserved */
   4 #define VG_MAX_CONTROLLERS 4
   5
   6 #include "vg_platform.h"
   7
   8 extern f32 controller_deadzone;
   9
  10 typedef u32 vg_input_op;
  11 typedef vg_input_op *vg_input_program;
  12
  13 enum vg_input_type
  14 {
  15    k_vg_input_type_button_u8,
  16    k_vg_input_type_axis_f32,
  17    k_vg_input_type_joy_v2f
  18 };
  19
  20 enum vg_input_op
  21 {
  22    /* data source */
  23    vg_keyboard,
  24    vg_mouse,
  25    vg_joy_button,
  26    vg_joy_axis,
  27    vg_joy_ls,
  28    vg_joy_rs,
  29
  30    /* modes */
  31    vg_mode_mul,
  32    vg_mode_sub,
  33    vg_mode_add,
  34    vg_mode_absmax,
  35    vg_mode_max,
  36
  37    /* control */
  38    vg_index,
  39    vg_end,
  40    vg_gui_visible,
  41
  42    /* math */
  43    vg_normalize
  44 };
  45
  46 struct vg_input
  47 {
  48    const u8 *sdl_keys;
  49    u32 sdl_mouse;
  50    f32 hidden_mouse_travel;
  51
  52    struct vg_controller{
  53       SDL_GameController *handle; /* handle for controller. NULL if unused */
  54       SDL_JoystickID instance_id; /* uid used in events */
  55
  56       float axises[ SDL_CONTROLLER_AXIS_MAX ];
  57       u32   buttons[ SDL_CONTROLLER_BUTTON_MAX ];
  58    }
  59    controllers[4];
  60
  61    int active_controller_index; /* most recent controller (by button press)
  62                                    will be -1 if no controllers active */
  63
  64    /* what the user is currently using. the keyboard and controller are still
  65     * active simultaneously, but this reflects what the UI should show */
  66    enum input_method{
  67       k_input_method_kbm,
  68       k_input_method_controller
  69    }
  70    display_input_method;
  71    SDL_GameControllerType display_input_type;
  72 }
  73 extern vg_input;
  74
  75 u8 vg_getkey( SDL_Keycode kc );
  76 void vg_process_inputs(void);
  77 void async_vg_input_init( void *payload, u32 size );
  78 void vg_input_init(void);
  79 void vg_input_free(void);
  80 struct vg_controller *vg_active_controller(void);
  81 u8 vg_controller_button( SDL_GameControllerButton button );
  82 f32 vg_controller_axis( SDL_GameControllerAxis axis );
  83 void vg_exec_input_program( enum vg_input_type type, vg_input_op *ops,
  84                             void *out_result );
  85 const char *controller_button_str( SDL_GameControllerButton button );
  86 void vg_keyboard_key_string( vg_str *str, u32 key, int special_glyphs );
  87 void vg_mouse_button_string( vg_str *str, u32 button, int special_glyphs );
  88 void vg_joy_axis_string( vg_str *str, SDL_GameControllerAxis axis,
  89                          int special_glyphs );
  90 void vg_joy_string( vg_str *str, vg_input_op op, int special_glyphs );
  91 void vg_input_string( vg_str *str, vg_input_op *ops, int glyphs );
  92 void vg_input_device_event( SDL_Event *ev );
  93 void vg_input_controller_event( SDL_Event *ev );