Tools: Fix tool digging speed limit

doc/lua_api.txt

@@ -1231,9 +1231,8 @@ Another example: Make red wool from white wool and red dye:
      * `0` is something that is directly accessible at the start of gameplay
      * There is no upper limit
 * `dig_immediate`: (player can always pick up node without tool wear)
-    * `2`: node is removed without tool wear after 0.5 seconds or so
-      (rail, sign)
-    * `3`: node is removed without tool wear immediately (torch)
+    * `2`: node is removed without tool wear after 0.5 seconds (rail, sign)
+    * `3`: node is removed without tool wear after 0.15 seconds (torch)
 * `disable_jump`: Player (and possibly other things) cannot jump from node
 * `fall_damage_add_percent`: damage speed = `speed * (1 + value/100)`
 * `bouncy`: value is bounce speed in percent

src/game.cpp

@@ -3888,13 +3888,6 @@ void Game::handleDigging(const PointedThing &pointed, const v3s16 &nodepos,
 		if (runData.nodig_delay_timer > 0.3)
 			runData.nodig_delay_timer = 0.3;
 
-		// We want a slight delay to very little
-		// time consuming nodes
-		const float mindelay = 0.15;
-
-		if (runData.nodig_delay_timer < mindelay)
-			runData.nodig_delay_timer = mindelay;
-
 		bool is_valid_position;
 		MapNode wasnode = map.getNodeNoEx(nodepos, &is_valid_position);
 		if (is_valid_position) {

src/tool.cpp

@@ -98,7 +98,7 @@ DigParams getDigParams(const ItemGroupList &groups,
 		return DigParams(true, 0.5, 0, "dig_immediate");
 	case 3:
 		//infostream<<"dig_immediate=3"<<std::endl;
-		return DigParams(true, 0.0, 0, "dig_immediate");
+		return DigParams(true, 0.15, 0, "dig_immediate");
 	default:
 		break;
 	}