[QOL] Colored slot backs (#5266)

Source/inv.cpp

@@ -1017,7 +1017,7 @@ int CreateGoldItemInInventorySlot(Player &player, int slotIndex, int value)
 
 } // namespace
 
-void InvDrawSlotBack(const Surface &out, Point targetPosition, Size size)
+void InvDrawSlotBack(const Surface &out, Point targetPosition, Size size, item_quality itemQuality)
 {
 	SDL_Rect srcRect = MakeSdlRect(0, 0, size.width, size.height);
 	out.Clip(&srcRect, &targetPosition);
@@ -1030,11 +1030,18 @@ void InvDrawSlotBack(const Surface &out, Point targetPosition, Size size)
 	for (int hgt = size.height; hgt != 0; hgt--, dst -= dstPitch + size.width) {
 		for (int wdt = size.width; wdt != 0; wdt--) {
 			std::uint8_t pix = *dst;
-			if (pix >= PAL16_BLUE) {
-				if (pix <= PAL16_BLUE + 15)
-					pix -= PAL16_BLUE - PAL16_BEIGE;
-				else if (pix >= PAL16_GRAY)
-					pix -= PAL16_GRAY - PAL16_BEIGE;
+			if (pix >= PAL16_GRAY) {
+				switch (itemQuality) {
+				case ITEM_QUALITY_MAGIC:
+					pix -= PAL16_GRAY - PAL16_BLUE - 1;
+					break;
+				case ITEM_QUALITY_UNIQUE:
+					pix -= PAL16_GRAY - PAL16_YELLOW - 1;
+					break;
+				default:
+					pix -= PAL16_GRAY - PAL16_BEIGE - 1;
+					break;
+				}
 			}
 			*dst++ = pix;
 		}
@@ -1104,7 +1111,7 @@ void DrawInv(const Surface &out)
 		if (!myPlayer.InvBody[slot].isEmpty()) {
 			int screenX = slotPos[slot].x;
 			int screenY = slotPos[slot].y;
-			InvDrawSlotBack(out, GetPanelPosition(UiPanels::Inventory, { screenX, screenY }), { slotSize[slot].width * InventorySlotSizeInPixels.width, slotSize[slot].height * InventorySlotSizeInPixels.height });
+			InvDrawSlotBack(out, GetPanelPosition(UiPanels::Inventory, { screenX, screenY }), { slotSize[slot].width * InventorySlotSizeInPixels.width, slotSize[slot].height * InventorySlotSizeInPixels.height }, myPlayer.InvBody[slot]._iMagical);
 
 			const int cursId = myPlayer.InvBody[slot]._iCurs + CURSOR_FIRSTITEM;
 
@@ -1130,7 +1137,7 @@ void DrawInv(const Surface &out)
 
 			if (slot == INVLOC_HAND_LEFT) {
 				if (myPlayer.GetItemLocation(myPlayer.InvBody[slot]) == ILOC_TWOHAND) {
-					InvDrawSlotBack(out, GetPanelPosition(UiPanels::Inventory, slotPos[INVLOC_HAND_RIGHT]), { slotSize[INVLOC_HAND_RIGHT].width * InventorySlotSizeInPixels.width, slotSize[INVLOC_HAND_RIGHT].height * InventorySlotSizeInPixels.height });
+					InvDrawSlotBack(out, GetPanelPosition(UiPanels::Inventory, slotPos[INVLOC_HAND_RIGHT]), { slotSize[INVLOC_HAND_RIGHT].width * InventorySlotSizeInPixels.width, slotSize[INVLOC_HAND_RIGHT].height * InventorySlotSizeInPixels.height }, myPlayer.InvBody[slot]._iMagical);
 					LightTableIndex = 0;
 					cel_transparency_active = true;
 
@@ -1149,7 +1156,8 @@ void DrawInv(const Surface &out)
 			InvDrawSlotBack(
 			    out,
 			    GetPanelPosition(UiPanels::Inventory, InvRect[i + SLOTXY_INV_FIRST]) + Displacement { 0, -1 },
-			    InventorySlotSizeInPixels);
+			    InventorySlotSizeInPixels,
+			    myPlayer.InvList[abs(myPlayer.InvGrid[i]) - 1]._iMagical);
 		}
 	}
 
@@ -1187,7 +1195,7 @@ void DrawInvBelt(const Surface &out)
 		}
 
 		const Point position { InvRect[i + SLOTXY_BELT_FIRST].x + mainPanelPosition.x, InvRect[i + SLOTXY_BELT_FIRST].y + mainPanelPosition.y - 1 };
-		InvDrawSlotBack(out, position, InventorySlotSizeInPixels);
+		InvDrawSlotBack(out, position, InventorySlotSizeInPixels, myPlayer.SpdList[i]._iMagical);
 		const int cursId = myPlayer.SpdList[i]._iCurs + CURSOR_FIRSTITEM;
 
 		const ClxSprite sprite = GetInvItemSprite(cursId);

Source/inv.h

@@ -86,7 +86,7 @@ extern bool invflag;
 extern bool drawsbarflag;
 extern const Point InvRect[73];
 
-void InvDrawSlotBack(const Surface &out, Point targetPosition, Size size);
+void InvDrawSlotBack(const Surface &out, Point targetPosition, Size size, item_quality itemQuality);
 /**
  * @brief Checks whether the given item can be placed on the belt. Takes item size as well as characteristics into account. Items
  * that cannot be placed on the belt have to be placed in the inventory instead.

Source/qol/stash.cpp

@@ -353,8 +353,10 @@ void DrawStash(const Surface &out)
 	constexpr Displacement offset { 0, INV_SLOT_SIZE_PX - 1 };
 
 	for (auto slot : StashGridRange) {
+		StashStruct::StashCell itemId = Stash.GetItemIdAtPosition(slot);
+		Item &item = Stash.stashList[itemId];
 		if (Stash.IsItemAtPosition(slot)) {
-			InvDrawSlotBack(out, GetStashSlotCoord(slot) + offset, InventorySlotSizeInPixels);
+			InvDrawSlotBack(out, GetStashSlotCoord(slot) + offset, InventorySlotSizeInPixels, item._iMagical);
 		}
 	}