Initial commit

engines/zvision/scripting/inventory.cpp

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+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#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