dvander@535: /**
ds@653: * vim: set ts=4 :
ds@1330: * =============================================================================
dvander@1231: * SourceMod
dvander@1231: * Copyright (C) 2004-2007 AlliedModders LLC. All rights reserved.
ds@1330: * =============================================================================
dvander@535: *
ds@1330: * This program is free software; you can redistribute it and/or modify it under
ds@1330: * the terms of the GNU General Public License, version 3.0, as published by the
ds@1330: * Free Software Foundation.
dvander@1231: *
ds@1330: * This program is distributed in the hope that it will be useful, but WITHOUT
ds@1330: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
ds@1330: * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
ds@1330: * details.
dvander@1231: *
ds@1330: * You should have received a copy of the GNU General Public License along with
ds@1330: * this program. If not, see .
dvander@1231: *
ds@1330: * As a special exception, AlliedModders LLC gives you permission to link the
ds@1330: * code of this program (as well as its derivative works) to "Half-Life 2," the
ds@1330: * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
ds@1330: * by the Valve Corporation. You must obey the GNU General Public License in
ds@1330: * all respects for all other code used. Additionally, AlliedModders LLC grants
ds@1330: * this exception to all derivative works. AlliedModders LLC defines further
ds@1330: * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
ds@1330: * or .
dvander@535: *
dvander@535: * Version: $Id$
dvander@535: */
dvander@535:
dvander@535: #include "sm_globals.h"
dvander@535: #include
dvander@535: #include
dvander@603: #include
ferret99gt@1701: #include "HandleSys.h"
ferret99gt@1701: #include "CellArray.h"
dvander@535:
dvander@535: /***********************************
dvander@535: * About the double array hack *
dvander@535: ***************************
dvander@535:
dvander@535: Double arrays in Pawn are vectors offset by the current offset. For example:
dvander@535:
dvander@535: new array[2][2]
dvander@535:
dvander@535: In this array, index 0 contains the offset from the current offset which
dvander@535: results in the final vector [2] (at [0][2]). Meaning, to dereference [1][2],
dvander@535: it is equivalent to:
dvander@535:
dvander@535: address = &array[1] + array[1] + 2 * sizeof(cell)
dvander@535:
dvander@535: The fact that each offset is from the _current_ position rather than the _base_
dvander@535: position is very important. It means that if you to try to swap vector positions,
dvander@535: the offsets will no longer match, because their current position has changed. A
dvander@535: simple and ingenious way around this is to back up the positions in a separate array,
dvander@535: then to overwrite each position in the old array with absolute indices. Pseudo C++ code:
dvander@535:
dvander@535: cell *array; //assumed to be set to the 2+D array
dvander@535: cell *old_offsets = new cell[2];
dvander@535: for (int i=0; i<2; i++)
dvander@535: {
dvander@535: old_offsets = array[i];
dvander@535: array[i] = i;
dvander@535: }
dvander@535:
dvander@535: Now, you can swap the array indices with no problem, and do a reverse-lookup to find the original addresses.
dvander@535: After sorting/modification is done, you must relocate the new indices. For example, if the two vectors in our
dvander@535: demo array were swapped, array[0] would be 1 and array[1] would be 0. This is invalid to the virtual machine.
dvander@535: Luckily, this is also simple -- all the information is there.
dvander@535:
dvander@535: for (int i=0; i<2; i++)
dvander@535: {
dvander@535: //get the # of the vector we want to relocate in
dvander@535: cell vector_index = array[i];
dvander@535: //get the real address of this vector
dvander@535: char *real_address = (char *)array + (vector_index * sizeof(cell)) + old_offsets[vector_index];
dvander@535: //calc and store the new distance offset
dvander@535: array[i] = real_address - ( (char *)array + (vector_index + sizeof(cell)) )
dvander@535: }
dvander@535:
dvander@535: Note that the inner expression can be heavily reduced; it is expanded for readability.
dvander@535: **********************************/
dvander@535:
dvander@535: enum SortOrder
dvander@535: {
dvander@535: Sort_Ascending = 0,
dvander@535: Sort_Descending = 1,
pred@1917: Sort_Random = 2,
dvander@535: };
dvander@535:
pred@1917: void sort_random(cell_t *array, cell_t size)
pred@1917: {
pred@1917: srand((unsigned int)time(NULL));
pred@1917:
pred@1917: for (int i = size-1; i > 0; i--)
pred@1917: {
pred@1917: int n = (rand() % i) + 1;
pred@1917:
pred@1917: if (array[i] != array[n])
pred@1917: {
pred@1917: array[i] ^= array[n];
pred@1917: array[n] ^= array[i];
pred@1917: array[i] ^= array[n];
pred@1917: }
pred@1917: }
pred@1917: }
pred@1917:
dvander@535: int sort_ints_asc(const void *int1, const void *int2)
dvander@535: {
dvander@535: return (*(int *)int1) - (*(int *)int2);
dvander@535: }
dvander@535:
dvander@535: int sort_ints_desc(const void *int1, const void *int2)
dvander@535: {
dvander@535: return (*(int *)int2) - (*(int *)int1);
dvander@535: }
dvander@535:
dvander@535: static cell_t sm_SortIntegers(IPluginContext *pContext, const cell_t *params)
dvander@535: {
dvander@535: cell_t *array;
dvander@535: cell_t array_size = params[2];
dvander@535: cell_t type = params[3];
dvander@535:
dvander@535: pContext->LocalToPhysAddr(params[1], &array);
dvander@535:
dvander@535: if (type == Sort_Ascending)
dvander@535: {
dvander@535: qsort(array, array_size, sizeof(cell_t), sort_ints_asc);
pred@1917: }
pred@1917: else if (type == Sort_Descending)
pred@1917: {
dvander@535: qsort(array, array_size, sizeof(cell_t), sort_ints_desc);
dvander@535: }
pred@1917: else
pred@1917: {
pred@1917: sort_random(array, array_size);
pred@1917: }
dvander@535:
dvander@535: return 1;
dvander@535: }
dvander@535:
dvander@535: int sort_floats_asc(const void *float1, const void *float2)
dvander@535: {
dvander@535: float r1 = *(float *)float1;
dvander@535: float r2 = *(float *)float2;
dvander@535:
dvander@535: if (r1 < r2)
dvander@535: {
dvander@535: return -1;
dvander@535: } else if (r2 < r1) {
dvander@535: return 1;
dvander@535: } else {
dvander@535: return 0;
dvander@535: }
dvander@535: }
dvander@535:
dvander@535: int sort_floats_desc(const void *float1, const void *float2)
dvander@535: {
dvander@535: float r1 = *(float *)float1;
dvander@535: float r2 = *(float *)float2;
dvander@535:
dvander@535: if (r1 < r2)
dvander@535: {
dvander@535: return 1;
dvander@535: } else if (r2 < r1) {
dvander@535: return -1;
dvander@535: } else {
dvander@535: return 0;
dvander@535: }
dvander@535: }
dvander@535:
dvander@535: static cell_t sm_SortFloats(IPluginContext *pContext, const cell_t *params)
dvander@535: {
dvander@535: cell_t *array;
dvander@535: cell_t array_size = params[2];
dvander@535: cell_t type = params[3];
dvander@535:
dvander@535: pContext->LocalToPhysAddr(params[1], &array);
dvander@535:
dvander@535: if (type == Sort_Ascending)
dvander@535: {
dvander@535: qsort(array, array_size, sizeof(cell_t), sort_floats_asc);
pred@1917: }
pred@1917: else if (type == Sort_Descending)
pred@1917: {
dvander@535: qsort(array, array_size, sizeof(cell_t), sort_floats_desc);
dvander@535: }
pred@1917: else
pred@1917: {
pred@1917: sort_random(array, array_size);
pred@1917: }
dvander@535:
dvander@535: return 1;
dvander@535: }
dvander@535:
dvander@535: static cell_t *g_CurStringArray = NULL;
dvander@535: static cell_t *g_CurRebaseMap = NULL;
dvander@535:
dvander@535: int sort_strings_asc(const void *blk1, const void *blk2)
dvander@535: {
dvander@535: cell_t reloc1 = *(cell_t *)blk1;
dvander@535: cell_t reloc2 = *(cell_t *)blk2;
dvander@535:
dvander@535: char *str1 = ((char *)(&g_CurStringArray[reloc1]) + g_CurRebaseMap[reloc1]);
dvander@535: char *str2 = ((char *)(&g_CurStringArray[reloc2]) + g_CurRebaseMap[reloc2]);
dvander@535:
dvander@535: return strcmp(str1, str2);
dvander@535: }
dvander@535:
dvander@535: int sort_strings_desc(const void *blk1, const void *blk2)
dvander@535: {
dvander@535: cell_t reloc1 = *(cell_t *)blk1;
dvander@535: cell_t reloc2 = *(cell_t *)blk2;
dvander@535:
dvander@535: char *str1 = ((char *)(&g_CurStringArray[reloc1]) + g_CurRebaseMap[reloc1]);
dvander@535: char *str2 = ((char *)(&g_CurStringArray[reloc2]) + g_CurRebaseMap[reloc2]);
dvander@535:
dvander@535: return strcmp(str2, str1);
dvander@535: }
dvander@535:
dvander@535: static cell_t sm_SortStrings(IPluginContext *pContext, const cell_t *params)
dvander@535: {
dvander@535: cell_t *array;
dvander@535: cell_t array_size = params[2];
dvander@535: cell_t type = params[3];
dvander@535:
dvander@535: pContext->LocalToPhysAddr(params[1], &array);
dvander@535:
dvander@535: /** HACKHACK - back up the old indices, replace the indices with something easier */
dvander@535: cell_t amx_addr, *phys_addr;
dvander@535: int err;
dvander@535: if ((err=pContext->HeapAlloc(array_size, &amx_addr, &phys_addr)) != SP_ERROR_NONE)
dvander@535: {
dvander@535: pContext->ThrowNativeErrorEx(err, "Ran out of memory to sort");
dvander@535: }
dvander@535:
dvander@535: g_CurStringArray = array;
dvander@535: g_CurRebaseMap = phys_addr;
dvander@535:
dvander@535: for (int i=0; iHeapPop(amx_addr);
dvander@535:
dvander@535: g_CurStringArray = NULL;
dvander@535: g_CurRebaseMap = NULL;
dvander@535:
dvander@535: return 1;
dvander@535: }
dvander@535:
dvander@535: struct sort_info
dvander@535: {
dvander@535: IPluginFunction *pFunc;
dvander@535: Handle_t hndl;
dvander@535: cell_t array_addr;
dvander@535: cell_t *array_base;
dvander@535: cell_t *array_remap;
dvander@535: };
dvander@535:
dvander@535: sort_info g_SortInfo;
dvander@535:
dvander@535: int sort1d_amx_custom(const void *elem1, const void *elem2)
dvander@535: {
dvander@535: cell_t c1 = *(cell_t *)elem1;
dvander@535: cell_t c2 = *(cell_t *)elem2;
dvander@535:
dvander@535: cell_t result = 0;
dvander@535: IPluginFunction *pf = g_SortInfo.pFunc;
dvander@535: pf->PushCell(c1);
dvander@535: pf->PushCell(c2);
dvander@535: pf->PushCell(g_SortInfo.array_addr);
dvander@535: pf->PushCell(g_SortInfo.hndl);
dvander@535: pf->Execute(&result);
dvander@535:
dvander@535: return result;
dvander@535: }
dvander@535:
dvander@535: static cell_t sm_SortCustom1D(IPluginContext *pContext, const cell_t *params)
dvander@535: {
dvander@535: cell_t *array;
dvander@535: cell_t array_size = params[2];
dvander@535:
dvander@535: IPluginFunction *pFunction = pContext->GetFunctionById(params[3]);
dvander@535: if (!pFunction)
dvander@535: {
dvander@535: return pContext->ThrowNativeError("Function %x is not a valid function", params[3]);
dvander@535: }
dvander@535:
dvander@535: pContext->LocalToPhysAddr(params[1], &array);
dvander@535:
dvander@535: sort_info oldinfo = g_SortInfo;
dvander@535:
dvander@535:
dvander@535: g_SortInfo.hndl = params[4];
dvander@535: g_SortInfo.array_addr = params[1];
dvander@535: g_SortInfo.array_remap = NULL;
dvander@535: g_SortInfo.array_base = NULL;
dvander@535: g_SortInfo.pFunc = pFunction;
dvander@535:
dvander@535: qsort(array, array_size, sizeof(cell_t), sort1d_amx_custom);
dvander@535:
dvander@535: g_SortInfo = oldinfo;
dvander@535:
dvander@535: return 1;
dvander@535: }
dvander@535:
dvander@535: int sort2d_amx_custom(const void *elem1, const void *elem2)
dvander@535: {
dvander@535: cell_t c1 = *(cell_t *)elem1;
dvander@535: cell_t c2 = *(cell_t *)elem2;
dvander@535:
dvander@535: cell_t c1_addr = g_SortInfo.array_addr + (c1 * sizeof(cell_t)) + g_SortInfo.array_remap[c1];
dvander@535: cell_t c2_addr = g_SortInfo.array_addr + (c2 * sizeof(cell_t)) + g_SortInfo.array_remap[c2];
dvander@535:
dvander@535: IPluginContext *pContext = g_SortInfo.pFunc->GetParentContext();
dvander@535: cell_t *c1_r, *c2_r;
dvander@535: pContext->LocalToPhysAddr(c1_addr, &c1_r);
dvander@535: pContext->LocalToPhysAddr(c2_addr, &c2_r);
dvander@535:
dvander@535: cell_t result = 0;
dvander@535: g_SortInfo.pFunc->PushCell(c1_addr);
dvander@535: g_SortInfo.pFunc->PushCell(c2_addr);
dvander@535: g_SortInfo.pFunc->PushCell(g_SortInfo.array_addr);
dvander@535: g_SortInfo.pFunc->PushCell(g_SortInfo.hndl);
dvander@535: g_SortInfo.pFunc->Execute(&result);
dvander@535:
dvander@535: return result;
dvander@535: }
dvander@535:
dvander@535: static cell_t sm_SortCustom2D(IPluginContext *pContext, const cell_t *params)
dvander@535: {
dvander@535: cell_t *array;
dvander@535: cell_t array_size = params[2];
dvander@535: IPluginFunction *pFunction;
dvander@535:
dvander@535: pContext->LocalToPhysAddr(params[1], &array);
dvander@535:
dvander@535: if ((pFunction=pContext->GetFunctionById(params[3])) == NULL)
dvander@535: {
dvander@535: return pContext->ThrowNativeError("Function %x is not a valid function", params[3]);
dvander@535: }
dvander@535:
dvander@535: /** back up the old indices, replace the indices with something easier */
dvander@535: cell_t amx_addr, *phys_addr;
dvander@535: int err;
dvander@535: if ((err=pContext->HeapAlloc(array_size, &amx_addr, &phys_addr)) != SP_ERROR_NONE)
dvander@535: {
dvander@535: pContext->ThrowNativeErrorEx(err, "Ran out of memory to sort");
dvander@535: return 0;
dvander@535: }
dvander@535:
dvander@535: sort_info oldinfo = g_SortInfo;
dvander@535:
dvander@535: g_SortInfo.pFunc = pFunction;
dvander@535: g_SortInfo.hndl = params[4];
dvander@535: g_SortInfo.array_addr = params[1];
dvander@535:
dvander@535: /** Same process as in strings, back up the old indices for later fixup */
dvander@535: g_SortInfo.array_base = array;
dvander@535: g_SortInfo.array_remap = phys_addr;
dvander@535:
dvander@535: for (int i=0; iHeapPop(amx_addr);
dvander@535:
dvander@535: g_SortInfo = oldinfo;
dvander@535:
dvander@535: return 1;
dvander@535: }
dvander@535:
ferret99gt@1701: enum SortType
ferret99gt@1701: {
ferret99gt@1701: Sort_Integer = 0,
ferret99gt@1701: Sort_Float,
ferret99gt@1701: Sort_String,
ferret99gt@1701: };
ferret99gt@1701:
ferret99gt@1701: int sort_adtarray_strings_asc(const void *str1, const void *str2)
ferret99gt@1701: {
ferret99gt@1701: return strcmp((char *) str1, (char *) str2);
ferret99gt@1701: }
ferret99gt@1701:
ferret99gt@1701: int sort_adtarray_strings_desc(const void *str1, const void *str2)
ferret99gt@1701: {
ferret99gt@1701: return strcmp((char *) str2, (char *) str1);
ferret99gt@1701: }
ferret99gt@1701:
pred@1917: void sort_adt_random(CellArray *cArray)
pred@1917: {
pred@1917: size_t arraysize = cArray->size();
pred@1917:
pred@1917: srand((unsigned int)time(NULL));
pred@1917:
pred@1917: for (int i = arraysize-1; i > 0; i--)
pred@1917: {
pred@1917: int n = (rand() % i) + 1;
pred@1917:
pred@1917: cArray->swap(i, n);
pred@1917: }
pred@1917: }
pred@1917:
ferret99gt@1701: static cell_t sm_SortADTArray(IPluginContext *pContext, const cell_t *params)
ferret99gt@1701: {
ferret99gt@1701: CellArray *cArray;
ferret99gt@1701: HandleError err;
ferret99gt@1701: HandleSecurity sec(pContext->GetIdentity(), g_pCoreIdent);
ferret99gt@1701:
ferret99gt@1701: if ((err = g_HandleSys.ReadHandle(params[1], htCellArray, &sec, (void **)&cArray))
ferret99gt@1701: != HandleError_None)
ferret99gt@1701: {
ferret99gt@1701: return pContext->ThrowNativeError("Invalid Handle %x (error: %d)", params[1], err);
ferret99gt@1701: }
ferret99gt@1701:
ferret99gt@1701: cell_t order = params[2];
pred@1917:
pred@1917: if (order == Sort_Random)
pred@1917: {
pred@1917: sort_adt_random(cArray);
pred@1917:
pred@1917: return 1;
pred@1917: }
pred@1917:
ferret99gt@1701: cell_t type = params[3];
ferret99gt@1701: size_t arraysize = cArray->size();
ferret99gt@1701: size_t blocksize = cArray->blocksize();
ferret99gt@1701: cell_t *array = cArray->base();
ferret99gt@1701:
ferret99gt@1701: if (type == Sort_Integer)
ferret99gt@1701: {
ferret99gt@1701: if (order == Sort_Ascending)
ferret99gt@1701: {
ferret99gt@1701: qsort(array, arraysize, blocksize * sizeof(cell_t), sort_ints_asc);
ferret99gt@1701: }
ferret99gt@1701: else
ferret99gt@1701: {
ferret99gt@1701: qsort(array, arraysize, blocksize * sizeof(cell_t), sort_ints_desc);
ferret99gt@1701: }
ferret99gt@1701: }
ferret99gt@1701: else if (type == Sort_Float)
ferret99gt@1701: {
dvander@1704: if (order == Sort_Ascending)
ferret99gt@1701: {
ferret99gt@1701: qsort(array, arraysize, blocksize * sizeof(cell_t), sort_floats_asc);
ferret99gt@1701: }
ferret99gt@1701: else
ferret99gt@1701: {
ferret99gt@1701: qsort(array, arraysize, blocksize * sizeof(cell_t), sort_floats_desc);
ferret99gt@1701: }
ferret99gt@1701: }
ferret99gt@1701: else if (type == Sort_String)
ferret99gt@1701: {
dvander@1704: if (order == Sort_Ascending)
ferret99gt@1701: {
ferret99gt@1701: qsort(array, arraysize, blocksize * sizeof(cell_t), sort_adtarray_strings_asc);
ferret99gt@1701: }
ferret99gt@1701: else
ferret99gt@1701: {
ferret99gt@1701: qsort(array, arraysize, blocksize * sizeof(cell_t), sort_adtarray_strings_desc);
ferret99gt@1701: }
ferret99gt@1701: }
ferret99gt@1701:
ferret99gt@1701: return 1;
ferret99gt@1701: }
ferret99gt@1701:
ferret99gt@1701: struct sort_infoADT
ferret99gt@1701: {
ferret99gt@1701: IPluginFunction *pFunc;
ferret99gt@1701: cell_t *array_base;
ferret99gt@1701: cell_t array_bsize;
ferret99gt@1701: Handle_t array_hndl;
ferret99gt@1701: Handle_t hndl;
ferret99gt@1701: };
ferret99gt@1701:
ferret99gt@1701: sort_infoADT g_SortInfoADT;
ferret99gt@1701:
ferret99gt@1701: int sort_adtarray_custom(const void *elem1, const void *elem2)
ferret99gt@1701: {
ferret99gt@1701: cell_t result = 0;
ferret99gt@1701: IPluginFunction *pf = g_SortInfoADT.pFunc;
ferret99gt@1701: pf->PushCell(((cell_t) ((cell_t *) elem1 - g_SortInfoADT.array_base)) / g_SortInfoADT.array_bsize);
ferret99gt@1701: pf->PushCell(((cell_t) ((cell_t *) elem2 - g_SortInfoADT.array_base)) / g_SortInfoADT.array_bsize);
ferret99gt@1701: pf->PushCell(g_SortInfoADT.array_hndl);
ferret99gt@1701: pf->PushCell(g_SortInfoADT.hndl);
ferret99gt@1701: pf->Execute(&result);
ferret99gt@1701:
ferret99gt@1701: return result;
ferret99gt@1701: }
ferret99gt@1701:
ferret99gt@1701: static cell_t sm_SortADTArrayCustom(IPluginContext *pContext, const cell_t *params)
ferret99gt@1701: {
ferret99gt@1701: CellArray *cArray;
ferret99gt@1701: HandleError err;
ferret99gt@1701: HandleSecurity sec(pContext->GetIdentity(), g_pCoreIdent);
ferret99gt@1701:
ferret99gt@1701: if ((err = g_HandleSys.ReadHandle(params[1], htCellArray, &sec, (void **)&cArray))
ferret99gt@1701: != HandleError_None)
ferret99gt@1701: {
ferret99gt@1701: return pContext->ThrowNativeError("Invalid Handle %x (error: %d)", params[1], err);
ferret99gt@1701: }
ferret99gt@1701:
ferret99gt@1701: IPluginFunction *pFunction = pContext->GetFunctionById(params[2]);
ferret99gt@1701: if (!pFunction)
ferret99gt@1701: {
ferret99gt@1701: return pContext->ThrowNativeError("Function %x is not a valid function", params[2]);
ferret99gt@1701: }
ferret99gt@1701:
ferret99gt@1701: size_t arraysize = cArray->size();
ferret99gt@1701: size_t blocksize = cArray->blocksize();
ferret99gt@1701: cell_t *array = cArray->base();
ferret99gt@1701:
ferret99gt@1701: sort_infoADT oldinfo = g_SortInfoADT;
ferret99gt@1701:
ferret99gt@1701: g_SortInfoADT.pFunc = pFunction;
ferret99gt@1701: g_SortInfoADT.array_base = array;
ferret99gt@1701: g_SortInfoADT.array_bsize = (cell_t) blocksize;
ferret99gt@1701: g_SortInfoADT.array_hndl = params[1];
ferret99gt@1701: g_SortInfoADT.hndl = params[3];
ferret99gt@1701:
ferret99gt@1701: qsort(array, arraysize, blocksize * sizeof(cell_t), sort_adtarray_custom);
ferret99gt@1701:
ferret99gt@1701: g_SortInfoADT = oldinfo;
ferret99gt@1701:
ferret99gt@1701: return 1;
ferret99gt@1701: }
ferret99gt@1701:
dvander@535: REGISTER_NATIVES(sortNatives)
dvander@535: {
dvander@535: {"SortIntegers", sm_SortIntegers},
dvander@535: {"SortFloats", sm_SortFloats},
dvander@535: {"SortStrings", sm_SortStrings},
dvander@535: {"SortCustom1D", sm_SortCustom1D},
dvander@535: {"SortCustom2D", sm_SortCustom2D},
ferret99gt@1701: {"SortADTArray", sm_SortADTArray},
ferret99gt@1701: {"SortADTArrayCustom", sm_SortADTArrayCustom},
dvander@535: {NULL, NULL},
dvander@535: };