Add object crosshair, disable entity selectionboxes by default (#9523)

Adds new object crosshair base pack texture

8 files changed, 55 insertions, 10 deletions

diff --git a/builtin/settingtypes.txt b/builtin/settingtypes.txt
index c787aea2c..c0620542d 100644
--- a/builtin/settingtypes.txt
+++ b/builtin/settingtypes.txt
@@ -741,9 +741,11 @@ selectionbox_color (Selection box color) string (0,0,0)
 selectionbox_width (Selection box width) int 2 1 5
 
 #    Crosshair color (R,G,B).
+#    Also controls the object crosshair color
 crosshair_color (Crosshair color) string (255,255,255)
 
 #    Crosshair alpha (opaqueness, between 0 and 255).
+#    Also controls the object crosshair color
 crosshair_alpha (Crosshair alpha) int 255 0 255
 
 #    Maximum number of recent chat messages to show
@@ -817,7 +819,8 @@ world_aligned_mode (World-aligned textures mode) enum enable disable,enable,forc
 autoscale_mode (Autoscaling mode) enum disable disable,enable,force
 
 #    Show entity selection boxes
-show_entity_selectionbox (Show entity selection boxes) bool true
+#    A restart is required after changing this.
+show_entity_selectionbox (Show entity selection boxes) bool false
 
 [*Menus]
 
diff --git a/doc/texture_packs.txt b/doc/texture_packs.txt
index 94151f1a4..e7a7dfd3c 100644
--- a/doc/texture_packs.txt
+++ b/doc/texture_packs.txt
@@ -72,7 +72,12 @@ by texture packs. All existing fallback textures can be found in the directory
 * `crosshair.png`
     * the crosshair texture in the center of the screen. The settings
       `crosshair_color` and `crosshair_alpha` are used to create a cross
-      when no texture was found
+      when no texture is found.
+
+* `object_crosshair.png`
+    * the crosshair seen when pointing at an object. The settings
+    `crosshair_color` and `crosshair_alpha` are used to create a cross
+    when no texture is found.
 
 * `halo.png`: used for the node highlighting mesh
 
diff --git a/minetest.conf.example b/minetest.conf.example
index a5f98ee5e..520125713 100644
--- a/minetest.conf.example
+++ b/minetest.conf.example
@@ -955,8 +955,9 @@
 # autoscale_mode = disable
 
 #    Show entity selection boxes
+#    A restart is required after changing this.
 #    type: bool
-# show_entity_selectionbox = true
+# show_entity_selectionbox = false
 
 ## Menus
 
@@ -3374,4 +3375,3 @@
 #    so see a full list at https://content.minetest.net/help/content_flags/
 #    type: string
 # contentdb_flag_blacklist = nonfree, desktop_default
-
diff --git a/src/client/game.cpp b/src/client/game.cpp
index 5f3ff5649..42d60b21c 100644
--- a/src/client/game.cpp
+++ b/src/client/game.cpp
@@ -3176,11 +3176,14 @@ PointedThing Game::updatePointedThing(
 	const NodeDefManager *nodedef = map.getNodeDefManager();
 
 	runData.selected_object = NULL;
+	hud->pointing_at_object = false;
 
 	RaycastState s(shootline, look_for_object, liquids_pointable);
 	PointedThing result;
 	env.continueRaycast(&s, &result);
 	if (result.type == POINTEDTHING_OBJECT) {
+		hud->pointing_at_object = true;
+
 		runData.selected_object = client->getEnv().getActiveObject(result.object_id);
 		aabb3f selection_box;
 		if (show_entity_selectionbox && runData.selected_object->doShowSelectionBox() &&
diff --git a/src/client/hud.cpp b/src/client/hud.cpp
index 31e633bc2..2b347c1e0 100644
--- a/src/client/hud.cpp
+++ b/src/client/hud.cpp
@@ -41,6 +41,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "gui/touchscreengui.h"
 #endif
 
+#define OBJECT_CROSSHAIR_LINE_SIZE 8
+#define CROSSHAIR_LINE_SIZE 10
+
 Hud::Hud(gui::IGUIEnvironment *guienv, Client *client, LocalPlayer *player,
 		Inventory *inventory)
 {
@@ -76,6 +79,7 @@ Hud::Hud(gui::IGUIEnvironment *guienv, Client *client, LocalPlayer *player,
 	selectionbox_argb = video::SColor(255, sbox_r, sbox_g, sbox_b);
 
 	use_crosshair_image = tsrc->isKnownSourceImage("crosshair.png");
+	use_object_crosshair_image = tsrc->isKnownSourceImage("object_crosshair.png");
 
 	m_selection_boxes.clear();
 	m_halo_boxes.clear();
@@ -601,6 +605,31 @@ void Hud::drawHotbar(u16 playeritem) {
 
 void Hud::drawCrosshair()
 {
+	if (pointing_at_object) {
+		if (use_object_crosshair_image) {
+			video::ITexture *object_crosshair = tsrc->getTexture("object_crosshair.png");
+			v2u32 size  = object_crosshair->getOriginalSize();
+			v2s32 lsize = v2s32(m_displaycenter.X - (size.X / 2),
+					m_displaycenter.Y - (size.Y / 2));
+			driver->draw2DImage(object_crosshair, lsize,
+					core::rect<s32>(0, 0, size.X, size.Y),
+					nullptr, crosshair_argb, true);
+		} else {
+			driver->draw2DLine(
+					m_displaycenter - v2s32(OBJECT_CROSSHAIR_LINE_SIZE,
+					OBJECT_CROSSHAIR_LINE_SIZE),
+					m_displaycenter + v2s32(OBJECT_CROSSHAIR_LINE_SIZE,
+					OBJECT_CROSSHAIR_LINE_SIZE), crosshair_argb);
+			driver->draw2DLine(
+					m_displaycenter + v2s32(OBJECT_CROSSHAIR_LINE_SIZE,
+					-OBJECT_CROSSHAIR_LINE_SIZE),
+					m_displaycenter + v2s32(-OBJECT_CROSSHAIR_LINE_SIZE,
+					OBJECT_CROSSHAIR_LINE_SIZE), crosshair_argb);
+		}
+
+		return;
+	}
+
 	if (use_crosshair_image) {
 		video::ITexture *crosshair = tsrc->getTexture("crosshair.png");
 		v2u32 size  = crosshair->getOriginalSize();
@@ -608,12 +637,12 @@ void Hud::drawCrosshair()
 				m_displaycenter.Y - (size.Y / 2));
 		driver->draw2DImage(crosshair, lsize,
 				core::rect<s32>(0, 0, size.X, size.Y),
-				0, crosshair_argb, true);
+				nullptr, crosshair_argb, true);
 	} else {
-		driver->draw2DLine(m_displaycenter - v2s32(10, 0),
-				m_displaycenter + v2s32(10, 0), crosshair_argb);
-		driver->draw2DLine(m_displaycenter - v2s32(0, 10),
-				m_displaycenter + v2s32(0, 10), crosshair_argb);
+		driver->draw2DLine(m_displaycenter - v2s32(CROSSHAIR_LINE_SIZE, 0),
+				m_displaycenter + v2s32(CROSSHAIR_LINE_SIZE, 0), crosshair_argb);
+		driver->draw2DLine(m_displaycenter - v2s32(0, CROSSHAIR_LINE_SIZE),
+				m_displaycenter + v2s32(0, CROSSHAIR_LINE_SIZE), crosshair_argb);
 	}
 }
 
diff --git a/src/client/hud.h b/src/client/hud.h
index 6f4c54626..ba34d479d 100644
--- a/src/client/hud.h
+++ b/src/client/hud.h
@@ -45,12 +45,16 @@ public:
 
 	video::SColor crosshair_argb;
 	video::SColor selectionbox_argb;
+
 	bool use_crosshair_image = false;
+	bool use_object_crosshair_image = false;
 	std::string hotbar_image = "";
 	bool use_hotbar_image = false;
 	std::string hotbar_selected_image = "";
 	bool use_hotbar_selected_image = false;
 
+	bool pointing_at_object = false;
+
 	Hud(gui::IGUIEnvironment *guienv, Client *client, LocalPlayer *player,
 			Inventory *inventory);
 	~Hud();
diff --git a/src/client/render/core.cpp b/src/client/render/core.cpp
index bf5aa6c2c..92a7137ea 100644
--- a/src/client/render/core.cpp
+++ b/src/client/render/core.cpp
@@ -86,6 +86,7 @@ void RenderingCore::drawHUD()
 	if (show_hud) {
 		if (draw_crosshair)
 			hud->drawCrosshair();
+	
 		hud->drawHotbar(client->getEnv().getLocalPlayer()->getWieldIndex());
 		hud->drawLuaElements(camera->getOffset());
 		camera->drawNametags();
diff --git a/src/defaultsettings.cpp b/src/defaultsettings.cpp
index abb6593b7..07bf0ebb8 100644
--- a/src/defaultsettings.cpp
+++ b/src/defaultsettings.cpp
@@ -225,7 +225,7 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("desynchronize_mapblock_texture_animation", "true");
 	settings->setDefault("hud_hotbar_max_width", "1.0");
 	settings->setDefault("enable_local_map_saving", "false");
-	settings->setDefault("show_entity_selectionbox", "true");
+	settings->setDefault("show_entity_selectionbox", "false");
 	settings->setDefault("texture_clean_transparent", "false");
 	settings->setDefault("texture_min_size", "64");
 	settings->setDefault("ambient_occlusion_gamma", "2.2");