(svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
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KUDr
277
src/signs.cpp
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277
src/signs.cpp
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/* $Id$ */
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#include "stdafx.h"
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#include "openttd.h"
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#include "table/strings.h"
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#include "functions.h"
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#include "player.h"
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#include "signs.h"
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#include "saveload.h"
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#include "command.h"
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#include "variables.h"
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static Sign *_new_sign;
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/**
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* Called if a new block is added to the sign-pool
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*/
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static void SignPoolNewBlock(uint start_item)
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{
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Sign *si;
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/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
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* TODO - This is just a temporary stage, this will be removed. */
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for (si = GetSign(start_item); si != NULL; si = (si->index + 1U < GetSignPoolSize()) ? GetSign(si->index + 1U) : NULL) si->index = start_item++;
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}
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/* Initialize the sign-pool */
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DEFINE_OLD_POOL(Sign, Sign, SignPoolNewBlock, NULL)
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/**
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*
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* Update the coordinate of one sign
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*
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*/
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static void UpdateSignVirtCoords(Sign *si)
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{
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Point pt = RemapCoords(si->x, si->y, si->z);
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SetDParam(0, si->str);
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UpdateViewportSignPos(&si->sign, pt.x, pt.y - 6, STR_2806);
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}
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/**
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*
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* Update the coordinates of all signs
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*
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*/
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void UpdateAllSignVirtCoords(void)
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{
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Sign *si;
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FOR_ALL_SIGNS(si) UpdateSignVirtCoords(si);
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}
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/**
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*
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* Marks the region of a sign as dirty
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*
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* @param si Pointer to the Sign
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*/
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static void MarkSignDirty(Sign *si)
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{
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MarkAllViewportsDirty(
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si->sign.left - 6,
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si->sign.top - 3,
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si->sign.left + si->sign.width_1 * 4 + 12,
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si->sign.top + 45);
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}
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/**
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*
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* Allocates a new sign
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*
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* @return The pointer to the new sign, or NULL if there is no more free space
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*/
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static Sign *AllocateSign(void)
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{
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Sign *si;
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/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
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* TODO - This is just a temporary stage, this will be removed. */
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for (si = GetSign(0); si != NULL; si = (si->index + 1U < GetSignPoolSize()) ? GetSign(si->index + 1U) : NULL) {
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if (!IsValidSign(si)) {
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uint index = si->index;
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memset(si, 0, sizeof(Sign));
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si->index = index;
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return si;
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}
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}
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/* Check if we can add a block to the pool */
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if (AddBlockToPool(&_Sign_pool))
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return AllocateSign();
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return NULL;
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}
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void DestroySign(Sign *si)
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{
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DeleteName(si->str);
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}
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/**
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* Place a sign at the given coordinates. Ownership of sign has
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* no effect whatsoever except for the colour the sign gets for easy recognition,
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* but everybody is able to rename/remove it.
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* @param tile tile to place sign at
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* @param p1 unused
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* @param p2 unused
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*/
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int32 CmdPlaceSign(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
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{
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Sign *si;
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/* Try to locate a new sign */
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si = AllocateSign();
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if (si == NULL) return_cmd_error(STR_2808_TOO_MANY_SIGNS);
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/* When we execute, really make the sign */
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if (flags & DC_EXEC) {
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int x = TileX(tile) * TILE_SIZE;
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int y = TileY(tile) * TILE_SIZE;
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si->str = STR_280A_SIGN;
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si->x = x;
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si->y = y;
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si->owner = _current_player; // owner of the sign; just eyecandy
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si->z = GetSlopeZ(x,y);
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UpdateSignVirtCoords(si);
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MarkSignDirty(si);
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InvalidateWindow(WC_SIGN_LIST, 0);
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_sign_sort_dirty = true;
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_new_sign = si;
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}
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return 0;
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}
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/** Rename a sign. If the new name of the sign is empty, we assume
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* the user wanted to delete it. So delete it. Ownership of signs
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* has no meaning/effect whatsoever except for eyecandy
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* @param tile unused
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* @param p1 index of the sign to be renamed/removed
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* @param p2 unused
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*/
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int32 CmdRenameSign(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
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{
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if (!IsValidSignID(p1)) return CMD_ERROR;
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/* If _cmd_text 0 means the new text for the sign is non-empty.
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* So rename the sign. If it is empty, it has no name, so delete it */
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if (_cmd_text[0] != '\0') {
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/* Create the name */
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StringID str = AllocateName(_cmd_text, 0);
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if (str == 0) return CMD_ERROR;
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if (flags & DC_EXEC) {
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Sign *si = GetSign(p1);
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/* Delete the old name */
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DeleteName(si->str);
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/* Assign the new one */
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si->str = str;
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si->owner = _current_player;
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/* Update; mark sign dirty twice, because it can either becom longer, or shorter */
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MarkSignDirty(si);
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UpdateSignVirtCoords(si);
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MarkSignDirty(si);
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InvalidateWindow(WC_SIGN_LIST, 0);
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_sign_sort_dirty = true;
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} else {
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/* Free the name, because we did not assign it yet */
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DeleteName(str);
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}
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} else { /* Delete sign */
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if (flags & DC_EXEC) {
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Sign *si = GetSign(p1);
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MarkSignDirty(si);
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DeleteSign(si);
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InvalidateWindow(WC_SIGN_LIST, 0);
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_sign_sort_dirty = true;
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}
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}
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return 0;
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}
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/**
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*
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* Callback function that is called after a sign is placed
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*
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*/
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void CcPlaceSign(bool success, TileIndex tile, uint32 p1, uint32 p2)
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{
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if (success) {
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ShowRenameSignWindow(_new_sign);
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ResetObjectToPlace();
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}
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}
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/**
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*
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* PlaceProc function, called when someone pressed the button if the
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* sign-tool is selected
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*
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*/
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void PlaceProc_Sign(TileIndex tile)
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{
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DoCommandP(tile, 0, 0, CcPlaceSign, CMD_PLACE_SIGN | CMD_MSG(STR_2809_CAN_T_PLACE_SIGN_HERE));
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}
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/**
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*
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* Initialize the signs
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*
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*/
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void InitializeSigns(void)
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{
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CleanPool(&_Sign_pool);
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AddBlockToPool(&_Sign_pool);
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}
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static const SaveLoad _sign_desc[] = {
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SLE_VAR(Sign, str, SLE_UINT16),
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SLE_CONDVAR(Sign, x, SLE_FILE_I16 | SLE_VAR_I32, 0, 4),
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SLE_CONDVAR(Sign, y, SLE_FILE_I16 | SLE_VAR_I32, 0, 4),
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SLE_CONDVAR(Sign, x, SLE_INT32, 5, SL_MAX_VERSION),
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SLE_CONDVAR(Sign, y, SLE_INT32, 5, SL_MAX_VERSION),
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SLE_CONDVAR(Sign, owner, SLE_UINT8, 6, SL_MAX_VERSION),
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SLE_VAR(Sign, z, SLE_UINT8),
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SLE_END()
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};
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/**
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*
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* Save all signs
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*
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*/
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static void Save_SIGN(void)
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{
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Sign *si;
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FOR_ALL_SIGNS(si) {
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SlSetArrayIndex(si->index);
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SlObject(si, _sign_desc);
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}
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}
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/**
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*
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* Load all signs
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*
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*/
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static void Load_SIGN(void)
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{
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int index;
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while ((index = SlIterateArray()) != -1) {
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Sign *si;
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if (!AddBlockIfNeeded(&_Sign_pool, index))
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error("Signs: failed loading savegame: too many signs");
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si = GetSign(index);
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SlObject(si, _sign_desc);
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}
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_sign_sort_dirty = true;
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}
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const ChunkHandler _sign_chunk_handlers[] = {
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{ 'SIGN', Save_SIGN, Load_SIGN, CH_ARRAY | CH_LAST},
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};
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