2014-04-09 04:09:30 +02:00
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/*****************************************************************************
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* Copyright (c) 2014 Ted John
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* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
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*
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* This file is part of OpenRCT2.
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*
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* OpenRCT2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*****************************************************************************/
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#include "addresses.h"
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2014-04-09 12:16:35 +02:00
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#include "climate.h"
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#include "date.h"
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2014-04-09 04:09:30 +02:00
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#include "map.h"
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#define GET_MAP_ELEMENT(x) (&(RCT2_ADDRESS(RCT2_ADDRESS_MAP_ELEMENTS, rct_map_element)[x]))
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2014-04-09 18:06:47 +02:00
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#define TILE_MAP_ELEMENT_POINTER(x) (RCT2_ADDRESS(RCT2_ADDRESS_TILE_MAP_ELEMENT_POINTERS, rct_map_element*)[x])
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static void tiles_init();
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2014-04-09 04:09:30 +02:00
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2014-04-13 23:23:56 +02:00
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void map_element_set_terrain(rct_map_element *element, int terrain)
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{
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// Bit 3 for terrain is stored in element.type bit 0
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if (terrain & 8)
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element->type |= 1;
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else
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element->type &= ~1;
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// Bits 0, 1, 2 for terrain are stored in element.terrain bit 5, 6, 7
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element->properties.surface.terrain &= ~0xE0;
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element->properties.surface.terrain = (terrain & 7) << 5;
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}
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void map_element_set_terrain_edge(rct_map_element *element, int terrain)
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{
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// Bit 3 for terrain is stored in element.type bit 0
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if (terrain & 8)
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element->type |= 128;
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else
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element->type &= ~128;
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// Bits 0, 1, 2 for terrain are stored in element.slope bit 5, 6, 7
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element->properties.surface.slope &= ~0xE0;
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element->properties.surface.slope = (terrain & 7) << 5;
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}
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2014-04-09 04:09:30 +02:00
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/**
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*
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* rct2: 0x0068AB4C
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*/
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void map_init()
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{
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int i;
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rct_map_element *map_element;
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2014-04-09 12:16:35 +02:00
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date_reset();
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2014-04-09 04:09:30 +02:00
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RCT2_GLOBAL(0x0138B580, sint16) = 0;
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RCT2_GLOBAL(0x010E63B8, sint32) = 0;
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2014-04-09 18:06:47 +02:00
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for (i = 0; i < MAX_TILE_MAP_ELEMENT_POINTERS; i++) {
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2014-04-09 04:09:30 +02:00
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map_element = GET_MAP_ELEMENT(i);
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2014-04-13 23:23:56 +02:00
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map_element->type = (MAP_ELEMENT_TYPE_SURFACE << 2) | 1;
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2014-04-10 05:02:06 +02:00
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map_element->flags = MAP_ELEMENT_FLAG_LAST_TILE;
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map_element->base_height = 14;
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map_element->clearance_height = 14;
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2014-04-13 23:23:56 +02:00
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map_element->properties.surface.slope = 1 << 5;
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2014-04-10 05:02:06 +02:00
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map_element->properties.surface.grass_length = 1;
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map_element->properties.surface.ownership = 0;
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2014-04-13 23:23:56 +02:00
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map_element_set_terrain(map_element, TERRAIN_GRASS);
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2014-04-09 04:09:30 +02:00
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}
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RCT2_GLOBAL(0x013B0E70, sint16) = 0;
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RCT2_GLOBAL(0x013CE774, sint16) = 0;
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RCT2_GLOBAL(0x013CE776, sint16) = 0;
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RCT2_GLOBAL(0x01358830, sint16) = 4768;
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RCT2_GLOBAL(0x01358832, sint16) = 5054;
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RCT2_GLOBAL(RCT2_ADDRESS_MAP_SIZE, sint16) = 150;
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RCT2_GLOBAL(0x01358836, sint16) = 4767;
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RCT2_GLOBAL(0x01359208, sint16) = 7;
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2014-04-10 16:14:47 +02:00
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map_update_tile_pointers();
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2014-04-09 04:09:30 +02:00
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RCT2_CALLPROC_EBPSAFE(0x0068ADBC);
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2014-04-09 12:16:35 +02:00
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climate_reset(CLIMATE_WARM);
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2014-04-09 18:06:47 +02:00
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}
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/**
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*
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* rct2: 0x0068AFFD
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*/
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2014-04-10 16:14:47 +02:00
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void map_update_tile_pointers()
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2014-04-09 18:06:47 +02:00
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{
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int i, x, y, lastTile;
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for (i = 0; i < MAX_TILE_MAP_ELEMENT_POINTERS; i++)
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TILE_MAP_ELEMENT_POINTER(i) = TILE_UNDEFINED_MAP_ELEMENT;
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rct_map_element *mapElement = RCT2_ADDRESS(RCT2_ADDRESS_MAP_ELEMENTS, rct_map_element);
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rct_map_element **tile = RCT2_ADDRESS(RCT2_ADDRESS_TILE_MAP_ELEMENT_POINTERS, rct_map_element*);
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for (y = 0; y < 256; y++) {
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for (x = 0; x < 256; x++) {
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*tile++ = mapElement;
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do {
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2014-04-10 05:02:06 +02:00
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lastTile = (mapElement->flags & MAP_ELEMENT_FLAG_LAST_TILE);
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2014-04-09 18:06:47 +02:00
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mapElement++;
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} while (!lastTile);
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}
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}
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// Possible next free map element
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RCT2_GLOBAL(0x0140E9A4, rct_map_element*) = mapElement;
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2014-04-10 16:14:47 +02:00
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}
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/**
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*
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* rct2: 0x00662783
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* UNFINISHED
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*/
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int sub_662783(int x, int y)
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{
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int i;
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rct_map_element *mapElement;
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if (x >= 8192 || y >= 8192)
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return 16;
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x &= 0xFFFFFFE0;
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y &= 0xFFFFFFE0;
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i = ((y * 256) + x) / 8;
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mapElement = TILE_MAP_ELEMENT_POINTER(i);
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while (mapElement->type & MAP_ELEMENT_TYPE_MASK) {
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mapElement++;
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}
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uint32 result =
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((mapElement->properties.surface.terrain & MAP_ELEMENT_WATER_HEIGHT_MASK) << 20) |
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(mapElement->base_height << 3);
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uint32 ebx = (mapElement->properties.surface.slope & MAP_ELEMENT_SLOPE_MASK) & ~0x16;
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// slope logic
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return result;
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2014-04-09 04:09:30 +02:00
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}
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