truelight@988: #include "stdafx.h"
truelight@988: #include "ttd.h"
truelight@988: #include "table/strings.h"
truelight@988: #include "signs.h"
truelight@988: #include "saveload.h"
truelight@988: #include "command.h"
truelight@988: 
truelight@1283: enum {
truelight@1283: 	/* Max signs: 64000 (4 * 16000) */
truelight@1283: 	SIGN_POOL_BLOCK_SIZE_BITS = 2,       /* In bits, so (1 << 2) == 4 */
truelight@1283: 	SIGN_POOL_MAX_BLOCKS      = 16000,
truelight@1283: };
truelight@1283: 
truelight@1283: /**
truelight@1283:  * Called if a new block is added to the sign-pool
truelight@1283:  */
truelight@1283: static void SignPoolNewBlock(uint start_item)
truelight@1283: {
truelight@1283: 	SignStruct *ss;
truelight@1283: 
truelight@1283: 	FOR_ALL_SIGNS_FROM(ss, start_item)
truelight@1283: 		ss->index = start_item++;
truelight@1283: }
truelight@1283: 
truelight@1283: /* Initialize the sign-pool */
truelight@1283: MemoryPool _sign_pool = { "Signs", SIGN_POOL_MAX_BLOCKS, SIGN_POOL_BLOCK_SIZE_BITS, sizeof(SignStruct), &SignPoolNewBlock, 0, 0, NULL };
truelight@1283: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Update the coordinate of one sign
truelight@988:  *
truelight@988:  */
truelight@988: static void UpdateSignVirtCoords(SignStruct *ss)
truelight@988: {
truelight@988: 	Point pt = RemapCoords(ss->x, ss->y, ss->z);
truelight@988: 	SetDParam(0, ss->str);
truelight@988: 	UpdateViewportSignPos(&ss->sign, pt.x, pt.y - 6, STR_2806);
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@990:  * Update the coordinates of all signs
truelight@988:  *
truelight@988:  */
tron@1093: void UpdateAllSignVirtCoords(void)
truelight@988: {
truelight@988: 	SignStruct *ss;
truelight@988: 
truelight@988: 	FOR_ALL_SIGNS(ss)
truelight@988: 		if (ss->str != 0)
truelight@988: 			UpdateSignVirtCoords(ss);
truelight@988: 
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Marks the region of a sign as dirty
truelight@988:  *
truelight@988:  * @param ss Pointer to the SignStruct
truelight@988:  */
truelight@988: static void MarkSignDirty(SignStruct *ss)
truelight@988: {
truelight@988: 	MarkAllViewportsDirty(
truelight@988: 		ss->sign.left - 6,
truelight@988: 		ss->sign.top  - 3,
truelight@988: 		ss->sign.left + ss->sign.width_1 * 4 + 12,
truelight@988: 		ss->sign.top  + 45);
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Allocates a new sign
truelight@988:  *
truelight@988:  * @return The pointer to the new sign, or NULL if there is no more free space
truelight@988:  */
tron@1093: static SignStruct *AllocateSign(void)
truelight@988: {
truelight@988: 	SignStruct *s;
truelight@988: 	FOR_ALL_SIGNS(s)
truelight@988: 		if (s->str == 0)
truelight@988: 			return s;
truelight@988: 
truelight@1283: 	/* Check if we can add a block to the pool */
truelight@1283: 	if (AddBlockToPool(&_sign_pool))
truelight@1283: 		return AllocateSign();
truelight@1283: 
truelight@988: 	return NULL;
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@990:  * Place a sign at the given x/y
truelight@988:  *
dominik@1165:  * @param p1 player number
truelight@988:  * @param p2 not used
truelight@988:  */
truelight@988: int32 CmdPlaceSign(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@988: {
truelight@988: 	SignStruct *ss;
truelight@988: 
truelight@988: 	/* Try to locate a new sign */
truelight@988: 	ss = AllocateSign();
truelight@988: 	if (ss == NULL)
truelight@988: 		return_cmd_error(STR_2808_TOO_MANY_SIGNS);
truelight@988: 
truelight@988: 	/* When we execute, really make the sign */
truelight@988: 	if (flags & DC_EXEC) {
truelight@988: 		ss->str = STR_280A_SIGN;
truelight@988: 		ss->x = x;
truelight@988: 		ss->y = y;
dominik@1165: 		ss->owner = p1;
truelight@988: 		ss->z = GetSlopeZ(x,y);
truelight@988: 		UpdateSignVirtCoords(ss);
truelight@988: 		MarkSignDirty(ss);
truelight@988: 		_new_sign_struct = ss;
truelight@988: 	}
truelight@988: 
truelight@988: 	return 0;
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  * Rename a sign
truelight@988:  *
truelight@988:  * @param sign_id Index of the sign
dominik@1165:  * @param new owner, if OWNER_NONE, sign will be removed
truelight@988:  */
dominik@1165: int32 CmdRenameSign(int x, int y, uint32 flags, uint32 sign_id, uint32 owner)
truelight@988: {
truelight@988: 	StringID str;
truelight@988: 	SignStruct *ss;
truelight@988: 
truelight@988: 	/* If GetDParam(0) == nothing, we delete the sign */
dominik@1165: 	if (GetDParam(0) != 0 && owner != OWNER_NONE) {
truelight@988: 		/* Create the name */
tron@1328: 		str = AllocateName((const char*)_decode_parameters, 0);
truelight@988: 		if (str == 0)
truelight@988: 			return CMD_ERROR;
truelight@988: 
truelight@988: 		if (flags & DC_EXEC) {
truelight@988: 			ss = GetSign(sign_id);
truelight@988: 
truelight@988: 			MarkSignDirty(ss);
truelight@988: 
truelight@988: 			/* Delete the old name */
truelight@988: 			DeleteName(ss->str);
truelight@988: 			/* Assign the new one */
truelight@988: 			ss->str = str;
dominik@1165: 			ss->owner = owner;
truelight@988: 
truelight@988: 			/* Update */
truelight@988: 			UpdateSignVirtCoords(ss);
truelight@988: 			MarkSignDirty(ss);
truelight@988: 		} else {
truelight@988: 			/* Free the name, because we did not assign it yet */
truelight@988: 			DeleteName(str);
truelight@988: 		}
truelight@988: 	} else {
truelight@988: 		/* Delete sign */
truelight@988: 		if (flags & DC_EXEC) {
truelight@988: 			ss = GetSign(sign_id);
truelight@988: 
truelight@988: 			/* Delete the name */
truelight@988: 			DeleteName(ss->str);
truelight@988: 			ss->str = 0;
truelight@988: 
truelight@988: 			MarkSignDirty(ss);
truelight@988: 		}
truelight@988: 	}
truelight@988: 
truelight@988: 	return 0;
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Callback function that is called after a sign is placed
truelight@988:  *
truelight@988:  */
truelight@988: void CcPlaceSign(bool success, uint tile, uint32 p1, uint32 p2)
truelight@988: {
truelight@988: 	if (success) {
truelight@988: 		ShowRenameSignWindow(_new_sign_struct);
truelight@988: 		ResetObjectToPlace();
truelight@988: 	}
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * PlaceProc function, called when someone pressed the button if the
truelight@988:  *  sign-tool is selected
truelight@988:  *
truelight@988:  */
truelight@988: void PlaceProc_Sign(uint tile)
truelight@988: {
dominik@1165: 	DoCommandP(tile, _current_player, 0, CcPlaceSign, CMD_PLACE_SIGN | CMD_MSG(STR_2809_CAN_T_PLACE_SIGN_HERE));
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Initialize the signs
truelight@988:  *
truelight@988:  */
tron@1093: void InitializeSigns(void)
truelight@988: {
truelight@1283: 	CleanPool(&_sign_pool);
truelight@1283: 	AddBlockToPool(&_sign_pool);
truelight@988: }
truelight@988: 
truelight@988: static const byte _sign_desc[] = {
truelight@988: 	SLE_VAR(SignStruct,str,						SLE_UINT16),
truelight@988: 	SLE_CONDVAR(SignStruct,x,					SLE_FILE_I16 | SLE_VAR_I32, 0, 4),
truelight@988: 	SLE_CONDVAR(SignStruct,y,					SLE_FILE_I16 | SLE_VAR_I32, 0, 4),
truelight@988: 	SLE_CONDVAR(SignStruct,x,					SLE_INT32, 5, 255),
truelight@988: 	SLE_CONDVAR(SignStruct,y,					SLE_INT32, 5, 255),
dominik@1201: 	SLE_CONDVAR(SignStruct,owner,			SLE_UINT8, 6, 255),
truelight@988: 	SLE_VAR(SignStruct,z,							SLE_UINT8),
truelight@988: 	SLE_END()
truelight@988: };
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Save all signs
truelight@988:  *
truelight@988:  */
tron@1093: static void Save_SIGN(void)
truelight@988: {
truelight@1283: 	SignStruct *ss;
truelight@988: 
truelight@1283: 	FOR_ALL_SIGNS(ss) {
truelight@988: 		/* Don't save empty signs */
truelight@1283: 		if (ss->str != 0) {
truelight@1283: 			SlSetArrayIndex(ss->index);
truelight@1283: 			SlObject(ss, _sign_desc);
truelight@988: 		}
truelight@988: 	}
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Load all signs
truelight@988:  *
truelight@988:  */
tron@1093: static void Load_SIGN(void)
truelight@988: {
truelight@988: 	int index;
truelight@988: 	while ((index = SlIterateArray()) != -1) {
truelight@1283: 		SignStruct *ss;
truelight@988: 
truelight@1283: 		if (!AddBlockIfNeeded(&_sign_pool, index))
truelight@1283: 			error("Signs: failed loading savegame: too many signs");
truelight@1283: 
truelight@1283: 		ss = GetSign(index);
truelight@1283: 		SlObject(ss, _sign_desc);
truelight@988: 	}
truelight@988: }
truelight@988: 
truelight@988: const ChunkHandler _sign_chunk_handlers[] = {
truelight@988: 	{ 'SIGN', Save_SIGN, Load_SIGN, CH_ARRAY | CH_LAST},
truelight@988: };