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SDL Multitouch!

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This commit is contained in:
TheBrokenRail
2023-11-01 20:45:24 -04:00
parent 4ff68d1f87
commit 4830a6fcab
4 changed files with 149 additions and 70 deletions
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91
platforms/sdl/main.cpp
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@@ -14,6 +14,7 @@ typedef AppPlatform_sdl UsedAppPlatform;
#endif
#include "client/app/NinecraftApp.hpp"
#include "client/player/input/Multitouch.hpp"
#ifdef __EMSCRIPTEN__
#include <emscripten.h>
@@ -54,6 +55,60 @@ static int TranslateSDLKeyCodeToVirtual(int sdlCode)
return SDLVK_UNKNOWN;
}
// Touch
#define TOUCH_IDS_SIZE (MAX_TOUCHES - 1) // ID 0 Is Reserved For The Mouse
struct touch_id_data {
bool active = false;
int id;
};
static touch_id_data touch_ids[TOUCH_IDS_SIZE];
static char get_touch_id(int device, int finger) {
int real_id = (device * 100) + finger;
for (int i = 0; i < TOUCH_IDS_SIZE; i++) {
touch_id_data &data = touch_ids[i];
if (data.active && data.id == real_id) {
return i + 1;
}
}
// Not Found
for (int i = 0; i < TOUCH_IDS_SIZE; i++) {
// Find First Inactive ID, And Activate It
touch_id_data &data = touch_ids[i];
if (!data.active) {
data.active = true;
data.id = real_id;
return i + 1;
}
}
// Fail
return 0;
}
static void drop_touch_id(int id) {
touch_ids[id - 1].active = false;
}
static void handle_touch(int x, int y, int type, char id) {
if (id == 0) {
return;
}
switch (type) {
case SDL_FINGERDOWN:
case SDL_FINGERUP: {
bool data = type == SDL_FINGERUP ? 0 : 1;
Mouse::feed(BUTTON_LEFT, data, x, y);
Multitouch::feed(BUTTON_LEFT, data, x, y, id);
if (type == SDL_FINGERUP) {
drop_touch_id(id);
}
break;
}
case SDL_FINGERMOTION: {
Mouse::feed(BUTTON_NONE, 0, x, y);
Multitouch::feed(BUTTON_NONE, 0, x, y, id);
break;
}
}
}
// Resize From JS
#ifdef __EMSCRIPTEN__
extern "C" void resize_from_js(int new_width, int new_height)
@@ -98,22 +153,42 @@ static void handle_events()
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
{
const float scale = g_fPointToPixelScale;
Mouse::feed(AppPlatform_sdlbase::GetMouseButtonType(event), AppPlatform_sdlbase::GetMouseButtonState(event), event.button.x * scale, event.button.y * scale);
if (event.button.which != SDL_TOUCH_MOUSEID) {
const float scale = g_fPointToPixelScale;
MouseButtonType type = AppPlatform_sdlbase::GetMouseButtonType(event);
bool state = AppPlatform_sdlbase::GetMouseButtonState(event);
float x = event.button.x * scale;
float y = event.button.y * scale;
Mouse::feed(type, state, x, y);
Multitouch::feed(type, state, x, y, 0);
}
break;
}
case SDL_MOUSEMOTION:
{
float scale = g_fPointToPixelScale;
float x = event.motion.x * scale;
float y = event.motion.y * scale;
Mouse::feed(BUTTON_NONE, false, x, y);
g_pAppPlatform->setMouseDiff(event.motion.xrel * scale, event.motion.yrel * scale);
if (event.button.which != SDL_TOUCH_MOUSEID) {
float scale = g_fPointToPixelScale;
float x = event.motion.x * scale;
float y = event.motion.y * scale;
Multitouch::feed(BUTTON_NONE, 0, x, y, 0);
Mouse::feed(BUTTON_NONE, false, x, y);
g_pAppPlatform->setMouseDiff(event.motion.xrel * scale, event.motion.yrel * scale);
}
break;
}
case SDL_MOUSEWHEEL:
{
Mouse::feed(BUTTON_SCROLLWHEEL, AppPlatform_sdlbase::GetMouseButtonState(event), Mouse::getX(), Mouse::getY());
if (event.button.which != SDL_TOUCH_MOUSEID) {
Mouse::feed(BUTTON_SCROLLWHEEL, AppPlatform_sdlbase::GetMouseButtonState(event), Mouse::getX(), Mouse::getY());
}
break;
}
case SDL_FINGERDOWN:
case SDL_FINGERUP:
case SDL_FINGERMOTION: {
float x = event.tfinger.x * Minecraft::width;
float y = event.tfinger.y * Minecraft::height;
handle_touch(x, y, event.type, get_touch_id(event.tfinger.touchId, event.tfinger.fingerId));
break;
}
case SDL_TEXTINPUT: