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engines/chamber/invent.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 "chamber/chamber.h"
+#include "chamber/common.h"
+#include "chamber/invent.h"
+#include "chamber/script.h"
+#include "chamber/cga.h"
+#include "chamber/cursor.h"
+#include "chamber/input.h"
+#include "chamber/sound.h"
+
+namespace Chamber {
+
+/*inventory box cells*/
+#define INVENTORY_SPOTS_MAX (4 * 4)
+
+struct {
+	byte   sx;
+	byte   ex;
+	byte   sy;
+	byte   ey;
+	byte   name;
+	byte   unkn5;
+	uint16  command;
+	byte   itemidx;
+	byte   unkn9;
+} inventory_spots[] = {
+	{58, 62,  56,  72, 0, 0, 0, 0, 0},
+	{62, 66,  56,  72, 0, 0, 0, 0, 0},
+	{66, 70,  56,  72, 0, 0, 0, 0, 0},
+	{70, 74,  56,  72, 0, 0, 0, 0, 0},
+	{58, 62,  72,  88, 0, 0, 0, 0, 0},
+	{62, 66,  72,  88, 0, 0, 0, 0, 0},
+	{66, 70,  72,  88, 0, 0, 0, 0, 0},
+	{70, 74,  72,  88, 0, 0, 0, 0, 0},
+	{58, 62,  88, 104, 0, 0, 0, 0, 0},
+	{62, 66,  88, 104, 0, 0, 0, 0, 0},
+	{66, 70,  88, 104, 0, 0, 0, 0, 0},
+	{70, 74,  88, 104, 0, 0, 0, 0, 0},
+	{58, 62, 104, 120, 0, 0, 0, 0, 0},
+	{62, 66, 104, 120, 0, 0, 0, 0, 0},
+	{66, 70, 104, 120, 0, 0, 0, 0, 0},
+	{70, 74, 104, 120, 0, 0, 0, 0, 0}
+};
+
+
+byte inv_count = 0;    /*TODO: pass this as param?*/
+byte inv_bgcolor = 0;  /*TODO: pass this as param?*/
+
+/*
+Filter items and put them inventory box, then draw it if non-empty
+filtermask/filtervalue specify area (in high 8 bits) and flags (in lower 8 bits)
+*/
+void drawInventoryBox(uint16 filtermask, uint16 filtervalue) {
+	int16 i;
+	byte count = 0;
+	for (i = 0; i < MAX_INV_ITEMS; i++) {
+		uint16 flags = (inventory_items[i].area << 8) | inventory_items[i].flags;
+		if ((flags & filtermask) != filtervalue)
+			continue;
+		if (count == 0) {
+			/*once first valid item found, draw the box*/
+			cga_FillAndWait(inv_bgcolor, 64 / 4, 64, CGA_SCREENBUFFER, CalcXY_p(232 / 4, 56));
+			playSound(20);
+		}
+		inventory_spots[count].name = inventory_items[i].name;
+		inventory_spots[count].command = inventory_items[i].command;
+		inventory_spots[count].itemidx = i + 1;
+		drawSpriteN(inventory_items[i].sprite, inventory_spots[count].sx, inventory_spots[count].sy, CGA_SCREENBUFFER);
+		count++;
+	}
+	inv_count = count;
+}
+
+void checkInventoryItemHover(byte count) {
+	int16 i;
+	for (i = 0; i < count; i++) {
+		if (isCursorInRect((rect_t *)&inventory_spots[i])) {
+			the_command = inventory_spots[i].command;
+			command_hint = inventory_spots[i].name;
+			cursor_color = 0xAA;
+			script_byte_vars.inv_item_index = inventory_spots[i].itemidx;
+			script_vars[kScrPool3_CurrentItem] = &inventory_items[script_byte_vars.inv_item_index - 1];
+			return;
+		}
+	}
+	/*nothing found*/
+	command_hint = 100;
+	cursor_color = 0xFF;
+	the_command = 0;
+}
+
+void openInventory(uint16 filtermask, uint16 filtervalue) {
+	the_command = 0;
+	cga_BackupImageReal(CalcXY_p(232 / 4, 56), 64 / 4, 64);
+	drawInventoryBox(filtermask, filtervalue);
+	if (inv_count != 0) {
+		selectCursor(CURSOR_FINGER);
+		processInput();
+		do {
+			pollInput();
+			checkInventoryItemHover(inv_count);
+			if (command_hint != last_command_hint)
+				drawCommandHint();
+			drawHintsAndCursor(frontbuffer);
+		} while (buttons == 0);
+		undrawCursor(frontbuffer);
+	}
+	cga_RestoreImage(scratch_mem2, frontbuffer);
+	playSound(20);
+	switch (((item_t *)script_vars[kScrPool3_CurrentItem])->name) {
+	case 108:	/*DAGGER*/
+	case 115:	/*SACRIFICIAL BLADE*/
+	case 117:	/*CHOPPER*/
+		script_byte_vars.bvar_63 = 1;
+		break;
+	default:
+		script_byte_vars.bvar_63 = 0;
+	}
+}
+
+} // End of namespace Chamber