1 files changed, 122 insertions, 0 deletions
diff --git a/engines/zvision/scripting/inventory.cpp b/engines/zvision/scripting/inventory.cpp
new file mode 100644
index 0000000000..76d43b200b
--- /dev/null
+++ b/engines/zvision/scripting/inventory.cpp
@@ -0,0 +1,122 @@
+/* ScummVM - Graphic Adventure Engine
+*
+* ScummVM is the legal property of its developers, whose names
+* are too numerous to list here. Please refer to the COPYRIGHT
+* file distributed with this source distribution.
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*
+*/
+
+#include "common/scummsys.h"
+
+#include "zvision/scripting/script_manager.h"
+
+namespace ZVision {
+
+int8 ScriptManager::inventoryGetCount() {
+	return getStateValue(StateKey_Inv_Cnt_Slot);
+}
+
+void ScriptManager::inventorySetCount(int8 cnt) {
+	setStateValue(StateKey_Inv_Cnt_Slot, cnt);
+}
+
+int16 ScriptManager::inventoryGetItem(int8 id) {
+	if (id < 49 && id >= 0)
+		return getStateValue(StateKey_Inv_1_Slot + id);
+	return -1;
+}
+
+void ScriptManager::inventorySetItem(int8 id, int16 item) {
+	if (id < 49 && id >= 0)
+		setStateValue(StateKey_Inv_1_Slot + id, item);
+}
+
+void ScriptManager::inventoryAdd(int16 item) {
+	int8 cnt = inventoryGetCount();
+
+	if (cnt < 49) {
+		bool notExist = true;
+
+		if (cnt == 0) {
+			inventorySetItem(0, 0);
+			inventorySetCount(1); // we needed empty item for cycle code
+			cnt = 1;
+		}
+
+		for (int8 cur = 0; cur < cnt; cur++)
+			if (inventoryGetItem(cur) == item) {
+				notExist = false;
+				break;
+			}
+
+		if (notExist) {
+			for (int8 i = cnt; i > 0; i--)
+				inventorySetItem(i, inventoryGetItem(i - 1));
+
+			inventorySetItem(0, item);
+
+			setStateValue(StateKey_InventoryItem, item);
+
+			inventorySetCount(cnt + 1);
+		}
+	}
+}
+
+void ScriptManager::inventoryDrop(int16 item) {
+	int8 itemCount = inventoryGetCount();
+
+	// if items in inventory > 0
+	if (itemCount != 0) {
+		int8 index = 0;
+
+		// finding needed item
+		while (index < itemCount) {
+			if (inventoryGetItem(index) == item)
+				break;
+
+			index++;
+		}
+
+		// if item in the inventory
+		if (itemCount != index) {
+			// shift all items left with rewrite founded item
+			for (int8 v = index; v < itemCount - 1 ; v++)
+				inventorySetItem(v, inventoryGetItem(v + 1));
+
+			// del last item
+			inventorySetItem(itemCount - 1, 0);
+			inventorySetCount(inventoryGetCount() - 1);
+
+			setStateValue(StateKey_InventoryItem, inventoryGetItem(0));
+		}
+	}
+}
+void ScriptManager::inventoryCycle() {
+	int8 itemCount = inventoryGetCount();
+	int8 curItem = inventoryGetItem(0);
+	if (itemCount > 1) {
+		for (int8 i = 0; i < itemCount - 1; i++)
+			inventorySetItem(i, inventoryGetItem(i + 1));
+
+		inventorySetItem(itemCount - 1, curItem);
+
+		setStateValue(StateKey_InventoryItem, inventoryGetItem(0));
+
+	}
+}
+
+} // End of namespace ZVision