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keybinds: allow mouse buttons as bindable inputs (Mouse1-5, LMB/MMB/RMB)

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Alexandros Mandravillis
2026-08-06 12:15:01 +03:00
committed by Matthew Stanley
parent 20a8f4ad08
commit e4658ee680
1 changed files with 35 additions and 2 deletions
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runtime/src/psx_keybinds.c
+35 -2
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@@ -8,12 +8,23 @@
*/
#include "psx_keybinds.h"
#include <SDL.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stddef.h>
/* Mouse-button pseudo-scancodes. Values sit above SDL's keyboard scancode
* space (SDL_NUM_SCANCODES == 512), so they flow through the existing
* bind/save/load/rebind machinery as ordinary SDL_Scancode values while
* held() resolves them against SDL_GetMouseState() instead of the keyboard
* array. INI names: Mouse1 (left) .. Mouse5 (X2), plus LMB/RMB/MMB aliases. */
#define PSXKB_MOUSE_SC_BASE 512 /* + SDL_BUTTON_* (1..5) */
#define PSXKB_MOUSE_SC(btn) ((SDL_Scancode)(PSXKB_MOUSE_SC_BASE + (btn)))
#define PSXKB_IS_MOUSE_SC(sc) \
((int)(sc) > PSXKB_MOUSE_SC_BASE && (int)(sc) <= PSXKB_MOUSE_SC_BASE + 5)
/* PSX pad word bits (active-low), standard DualShock layout. Matches the
* PAD_* masks in main.cpp / beetle_main.cpp. */
#define PSXKB_BIT_SELECT (1u << 0)
@@ -138,11 +149,25 @@ static SDL_Scancode name_to_scancode(const char *name) {
if (!strcmp(buf, "escape") || !strcmp(buf, "esc")) return SDL_SCANCODE_ESCAPE;
if (!strcmp(buf, "backspace")) return SDL_SCANCODE_BACKSPACE;
if (!strcmp(buf, "none") || !strcmp(buf, "")) return SDL_SCANCODE_UNKNOWN;
/* Mouse buttons: Mouse1..Mouse5 (SDL button order: 1=left, 2=middle,
* 3=right, 4=X1, 5=X2) plus the common aliases. */
if (!strncmp(buf, "mouse", 5) && buf[5] >= '1' && buf[5] <= '5' && !buf[6])
return PSXKB_MOUSE_SC(buf[5] - '0');
if (!strcmp(buf, "lmb") || !strcmp(buf, "mouse left")) return PSXKB_MOUSE_SC(SDL_BUTTON_LEFT);
if (!strcmp(buf, "mmb") || !strcmp(buf, "mouse middle")) return PSXKB_MOUSE_SC(SDL_BUTTON_MIDDLE);
if (!strcmp(buf, "rmb") || !strcmp(buf, "mouse right")) return PSXKB_MOUSE_SC(SDL_BUTTON_RIGHT);
if (!strcmp(buf, "mouse x1")) return PSXKB_MOUSE_SC(SDL_BUTTON_X1);
if (!strcmp(buf, "mouse x2")) return PSXKB_MOUSE_SC(SDL_BUTTON_X2);
return SDL_SCANCODE_UNKNOWN;
}
static const char *scancode_to_name(SDL_Scancode sc) {
if (sc == SDL_SCANCODE_UNKNOWN) return "None";
if (PSXKB_IS_MOUSE_SC(sc)) {
static const char *mouse_names[5] =
{ "Mouse1", "Mouse2", "Mouse3", "Mouse4", "Mouse5" };
return mouse_names[(int)sc - PSXKB_MOUSE_SC_BASE - 1];
}
const char *name = SDL_GetScancodeName(sc);
return (name && name[0]) ? name : "None";
}
@@ -205,6 +230,8 @@ static void write_ini(const char *path) {
"# Use SDL key names. Common: A B C ... Z, 0-9, F1-F12, Up Down Left Right,\n"
"# Return, Tab, Space, Left Shift, Right Shift, Left Ctrl, Right Ctrl,\n"
"# Backspace, Escape, Backslash. Use \"None\" to leave an input unbound.\n"
"# Mouse buttons also bind: Mouse1 (left), Mouse2 (middle), Mouse3 (right),\n"
"# Mouse4/Mouse5 (side); aliases LMB, MMB, RMB.\n"
"#\n"
"# Buttons: up/down/left/right, cross/circle/square/triangle, l1/r1/l2/r2,\n"
"# l3/r3 (stick clicks), start/select. ls_* / rs_* are the left/right\n"
@@ -298,10 +325,16 @@ static PsxPlayerBinds *player_binds(int player) {
return &s_binds.player[player - 1];
}
/* Is the scancode at button-def index i currently held for this player? */
/* Is the scancode at button-def index i currently held for this player?
* Mouse pseudo-scancodes MUST be checked before indexing keys[] — they sit
* beyond the keyboard state array (SDL_NUM_SCANCODES entries). */
static int held(const uint8_t *keys, const PsxPlayerBinds *pb, int i) {
SDL_Scancode sc = *(const SDL_Scancode *)((const char *)pb + s_buttons[i].offset);
return sc != SDL_SCANCODE_UNKNOWN && keys[sc];
if (PSXKB_IS_MOUSE_SC(sc)) {
Uint32 m = SDL_GetMouseState(NULL, NULL);
return (m & SDL_BUTTON((int)sc - PSXKB_MOUSE_SC_BASE)) != 0;
}
return sc != SDL_SCANCODE_UNKNOWN && (int)sc < SDL_NUM_SCANCODES && keys[sc];
}
uint16_t psx_keybinds_pad_word(const uint8_t *keys, int player) {