133 lines
4.3 KiB
C
133 lines
4.3 KiB
C
#include <stdio.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <math.h>
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#include <SDL2/SDL.h>
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// Analog camera movement by Pathétique (github.com/vrmiguel), y0shin and Mors
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// Contribute or communicate bugs at github.com/vrmiguel/sm64-analog-camera
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#include <ultra64.h>
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#include "controller_api.h"
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#include "../configfile.h"
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extern int16_t rightx;
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extern int16_t righty;
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#ifdef BETTERCAMERA
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int mouse_x;
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int mouse_y;
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extern u8 newcam_mouse;
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#endif
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static bool init_ok;
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static SDL_GameController *sdl_cntrl;
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static void controller_sdl_init(void) {
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if (SDL_Init(SDL_INIT_GAMECONTROLLER | SDL_INIT_EVENTS) != 0) {
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fprintf(stderr, "SDL init error: %s\n", SDL_GetError());
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return;
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}
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#ifdef BETTERCAMERA
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if (newcam_mouse == 1)
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SDL_SetRelativeMouseMode(SDL_TRUE);
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SDL_GetRelativeMouseState(&mouse_x, &mouse_y);
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#endif
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init_ok = true;
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}
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static void controller_sdl_read(OSContPad *pad) {
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if (!init_ok) {
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return;
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}
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#ifdef BETTERCAMERA
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if (newcam_mouse == 1)
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SDL_SetRelativeMouseMode(SDL_TRUE);
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else
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SDL_SetRelativeMouseMode(SDL_FALSE);
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const u32 mbuttons = SDL_GetRelativeMouseState(&mouse_x, &mouse_y);
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if (configMouseA && (mbuttons & SDL_BUTTON(configMouseA))) pad->button |= A_BUTTON;
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if (configMouseB && (mbuttons & SDL_BUTTON(configMouseB))) pad->button |= B_BUTTON;
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if (configMouseL && (mbuttons & SDL_BUTTON(configMouseL))) pad->button |= L_TRIG;
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if (configMouseR && (mbuttons & SDL_BUTTON(configMouseR))) pad->button |= R_TRIG;
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if (configMouseZ && (mbuttons & SDL_BUTTON(configMouseZ))) pad->button |= Z_TRIG;
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#endif
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SDL_GameControllerUpdate();
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if (sdl_cntrl != NULL && !SDL_GameControllerGetAttached(sdl_cntrl)) {
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SDL_GameControllerClose(sdl_cntrl);
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sdl_cntrl = NULL;
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}
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if (sdl_cntrl == NULL) {
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for (int i = 0; i < SDL_NumJoysticks(); i++) {
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if (SDL_IsGameController(i)) {
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sdl_cntrl = SDL_GameControllerOpen(i);
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if (sdl_cntrl != NULL) {
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break;
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}
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}
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}
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if (sdl_cntrl == NULL) {
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return;
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}
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}
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if (SDL_GameControllerGetButton(sdl_cntrl, configJoyStart)) pad->button |= START_BUTTON;
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if (SDL_GameControllerGetButton(sdl_cntrl, configJoyZ)) pad->button |= Z_TRIG;
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if (SDL_GameControllerGetButton(sdl_cntrl, configJoyR)) pad->button |= R_TRIG;
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if (SDL_GameControllerGetButton(sdl_cntrl, configJoyA)) pad->button |= A_BUTTON;
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if (SDL_GameControllerGetButton(sdl_cntrl, configJoyB)) pad->button |= B_BUTTON;
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int16_t leftx = SDL_GameControllerGetAxis(sdl_cntrl, SDL_CONTROLLER_AXIS_LEFTX);
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int16_t lefty = SDL_GameControllerGetAxis(sdl_cntrl, SDL_CONTROLLER_AXIS_LEFTY);
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rightx = SDL_GameControllerGetAxis(sdl_cntrl, SDL_CONTROLLER_AXIS_RIGHTX);
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righty = SDL_GameControllerGetAxis(sdl_cntrl, SDL_CONTROLLER_AXIS_RIGHTY);
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int16_t ltrig = SDL_GameControllerGetAxis(sdl_cntrl, SDL_CONTROLLER_AXIS_TRIGGERLEFT);
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int16_t rtrig = SDL_GameControllerGetAxis(sdl_cntrl, SDL_CONTROLLER_AXIS_TRIGGERRIGHT);
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#ifdef TARGET_WEB
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// Firefox has a bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1606562
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// It sets down y to 32768.0f / 32767.0f, which is greater than the allowed 1.0f,
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// which SDL then converts to a int16_t by multiplying by 32767.0f, which overflows into -32768.
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// Maximum up will hence never become -32768 with the current version of SDL2,
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// so this workaround should be safe in compliant browsers.
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if (lefty == -32768) {
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lefty = 32767;
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}
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if (righty == -32768) {
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righty = 32767;
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}
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#endif
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if (rightx < -0x4000) pad->button |= L_CBUTTONS;
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if (rightx > 0x4000) pad->button |= R_CBUTTONS;
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if (righty < -0x4000) pad->button |= U_CBUTTONS;
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if (righty > 0x4000) pad->button |= D_CBUTTONS;
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if (ltrig > 30 * 256) pad->button |= Z_TRIG;
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if (rtrig > 30 * 256) pad->button |= R_TRIG;
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uint32_t magnitude_sq = (uint32_t)(leftx * leftx) + (uint32_t)(lefty * lefty);
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if (magnitude_sq > (uint32_t)(DEADZONE * DEADZONE)) {
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pad->stick_x = leftx / 0x100;
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int stick_y = -lefty / 0x100;
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pad->stick_y = stick_y == 128 ? 127 : stick_y;
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}
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}
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struct ControllerAPI controller_sdl = {
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controller_sdl_init,
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controller_sdl_read
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};
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