touch interface

config.cpp

@@ -1103,6 +1103,7 @@ EX void initConfig() {
         qm = false;
         separate_status = true;
         multi::multi_autojoy = false;
+        touch_interface = true;
         }
       }
     }
@@ -1230,6 +1231,9 @@ EX void initConfig() {
   ->set_sets(sets_sfx_volume);
   #endif
 
+  param_b(touch_interface, "touch_interface")
+    ->editable("a button for easier touching", 't');
+
   param_enum(dialog::display_keys, "dialog_display_keys")
     ->editable({{"never", ""}, {"when using keyboard", ""}, {"always", ""}, {"SteamDeck controls", ""}}, "display keys in dialogs", 'K');
 

control.cpp

@@ -194,6 +194,14 @@ EX void calcMousedest() {
   cwt = bcwt;
   }
 
+#if HDR
+enum class tmode { move, info, drag, fire, ranged };
+#endif
+
+EX bool touch_interface;
+EX tmode touchmode;
+EX vector<string> touch_description = { "touch to move", "touch for info", "touch to drag", "touch to aim", "touch for ranged" };
+
 EX void mousemovement() {
 
   #if CAP_VR
@@ -690,11 +698,31 @@ EX void handleKeyNormal(int sym, int uni) {
   if(sym == PSEUDOKEY_NOHINT)
     no_find_player = true;
 
+  if(sym == PSEUDOKEY_TOUCH) {
+    bool invalid;
+    do {
+      touchmode = (tmode) gmod(1 + int(touchmode), 5);
+      invalid = touchmode == tmode::fire && !bow::crossbow_mode();
+      }
+    while(invalid);
+    }
+
   if(sym == '-' || sym == PSEUDOKEY_WHEELDOWN) {
     actonrelease = false;
+
     
     multi::cpid = 0;
-    if(bow::fire_mode) {
+    if(touchmode == tmode::drag) {
+      panning(mouseoh, mouseh);
+      holdmouse = true;
+      }
+    else if(touchmode == tmode::info)
+      gotoHelp(help);
+    else if(touchmode == tmode::ranged) {
+      if(shmup::on ? numplayers() == 1 && !shmup::pc[0]->dead : true)
+        targetRangedOrb(mouseover, roMouseForce);
+      }
+    else if(bow::fire_mode || (touchmode == tmode::fire && bow::crossbow_mode())) {
       if(mouseover) bow::add_fire(mouseover);
       }
     else if(mouseover &&

graph.cpp

@@ -1833,6 +1833,9 @@ EX void show_menu_button() {
     displayButton(vid.xres-8, vid.yres-vid.fsize, XLAT("menu"), SDLK_ESCAPE, 16);
   else
     displayButton(vid.xres-8, vid.yres-vid.fsize, XLAT("(v) menu"), 'v', 16);
+
+  if(touch_interface)
+   displayButton(vid.xres - 8, vid.yres - 3 * vid.fsize, XLAT(touch_description[(int) touchmode]), PSEUDOKEY_TOUCH, 16);
   }
 
 EX void normalscreen() {

sysconfig.h

@@ -250,6 +250,7 @@
 #define PSEUDOKEY_LIST_SLIDER 2507
 #define PSEUDOKEY_SELECT 2508
 #define PSEUDOKEY_ONSCREEN_KEYBOARD 2509
+#define PSEUDOKEY_TOUCH 2510
 
 #define PSEUDOKEY_JOY 4096
 #define JOY_ID 128