00001
00002
00005 #include "stdafx.h"
00006 #include "oldpool.h"
00007 #include "newgrf.h"
00008 #include "newgrf_spritegroup.h"
00009 #include "sprite.h"
00010
00011 static void SpriteGroupPoolCleanBlock(uint start_item, uint end_item);
00012
00013 static uint _spritegroup_count = 0;
00014 STATIC_OLD_POOL(SpriteGroup, SpriteGroup, 9, 250, NULL, SpriteGroupPoolCleanBlock)
00015
00016 static void DestroySpriteGroup(SpriteGroup *group)
00017 {
00018
00019
00020 switch (group->type) {
00021 case SGT_REAL:
00022 free((SpriteGroup**)group->g.real.loaded);
00023 free((SpriteGroup**)group->g.real.loading);
00024 break;
00025
00026 case SGT_DETERMINISTIC:
00027 free(group->g.determ.adjusts);
00028 free(group->g.determ.ranges);
00029 break;
00030
00031 case SGT_RANDOMIZED:
00032 free((SpriteGroup**)group->g.random.groups);
00033 break;
00034
00035 case SGT_TILELAYOUT:
00036 free((void*)group->g.layout.dts->seq);
00037 free(group->g.layout.dts);
00038 break;
00039
00040 default:
00041 break;
00042 }
00043 }
00044
00045 static void SpriteGroupPoolCleanBlock(uint start_item, uint end_item)
00046 {
00047 uint i;
00048
00049 for (i = start_item; i <= end_item; i++) {
00050 DestroySpriteGroup(GetSpriteGroup(i));
00051 }
00052 }
00053
00054
00055
00056 SpriteGroup *AllocateSpriteGroup()
00057 {
00058
00059 if (_spritegroup_count == GetSpriteGroupPoolSize()) {
00060 if (!_SpriteGroup_pool.AddBlockToPool()) return NULL;
00061 }
00062
00063 return GetSpriteGroup(_spritegroup_count++);
00064 }
00065
00066
00067 void InitializeSpriteGroupPool()
00068 {
00069 _SpriteGroup_pool.CleanPool();
00070
00071 _spritegroup_count = 0;
00072 }
00073
00074 TemporaryStorageArray<uint32, 0x110> _temp_store;
00075
00076
00077 static inline uint32 GetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
00078 {
00079
00080 uint32 value;
00081 if (GetGlobalVariable(variable, &value)) return value;
00082
00083
00084 switch (variable) {
00085 case 0x0C: return object->callback;
00086 case 0x10: return object->callback_param1;
00087 case 0x18: return object->callback_param2;
00088 case 0x1C: return object->last_value;
00089
00090 case 0x5F: return (object->GetRandomBits(object) << 8) | object->GetTriggers(object);
00091
00092 case 0x7D: return _temp_store.Get(parameter);
00093
00094 case 0x7F:
00095 if (object == NULL || object->grffile == NULL || parameter >= object->grffile->param_end) return 0;
00096 return object->grffile->param[parameter];
00097
00098
00099 default: return object->GetVariable(object, variable, parameter, available);
00100 }
00101 }
00102
00103
00110 static uint32 RotateRight(uint32 val, uint32 rot)
00111 {
00112
00113 rot %= 32;
00114
00115 return (val >> rot) | (val << (32 - rot));
00116 }
00117
00118
00119
00120
00121 template <typename U, typename S>
00122 static U EvalAdjustT(const DeterministicSpriteGroupAdjust *adjust, ResolverObject *object, U last_value, uint32 value)
00123 {
00124 value >>= adjust->shift_num;
00125 value &= adjust->and_mask;
00126
00127 if (adjust->type != DSGA_TYPE_NONE) value += (S)adjust->add_val;
00128
00129 switch (adjust->type) {
00130 case DSGA_TYPE_DIV: value /= (S)adjust->divmod_val; break;
00131 case DSGA_TYPE_MOD: value %= (U)adjust->divmod_val; break;
00132 case DSGA_TYPE_NONE: break;
00133 }
00134
00135 switch (adjust->operation) {
00136 case DSGA_OP_ADD: return last_value + value;
00137 case DSGA_OP_SUB: return last_value - value;
00138 case DSGA_OP_SMIN: return min((S)last_value, (S)value);
00139 case DSGA_OP_SMAX: return max((S)last_value, (S)value);
00140 case DSGA_OP_UMIN: return min((U)last_value, (U)value);
00141 case DSGA_OP_UMAX: return max((U)last_value, (U)value);
00142 case DSGA_OP_SDIV: return value == 0 ? (S)last_value : (S)last_value / (S)value;
00143 case DSGA_OP_SMOD: return value == 0 ? (S)last_value : (S)last_value % (S)value;
00144 case DSGA_OP_UDIV: return value == 0 ? (U)last_value : (U)last_value / (U)value;
00145 case DSGA_OP_UMOD: return value == 0 ? (U)last_value : (U)last_value % (U)value;
00146 case DSGA_OP_MUL: return last_value * value;
00147 case DSGA_OP_AND: return last_value & value;
00148 case DSGA_OP_OR: return last_value | value;
00149 case DSGA_OP_XOR: return last_value ^ value;
00150 case DSGA_OP_STO: _temp_store.Store(value, last_value); return last_value;
00151 case DSGA_OP_RST: return value;
00152 case DSGA_OP_STOP: if (object->psa != NULL) object->psa->Store(value, last_value); return last_value;
00153 case DSGA_OP_ROR: return RotateRight(last_value, value);
00154 case DSGA_OP_SCMP: return ((S)last_value == (S)value) ? 1 : ((S)last_value < (S)value ? 0 : 2);
00155 case DSGA_OP_UCMP: return ((U)last_value == (U)value) ? 1 : ((U)last_value < (U)value ? 0 : 2);
00156 default: return value;
00157 }
00158 }
00159
00160
00161 static inline const SpriteGroup *ResolveVariable(const SpriteGroup *group, ResolverObject *object)
00162 {
00163 static SpriteGroup nvarzero;
00164 uint32 last_value = 0;
00165 uint32 value = 0;
00166 uint i;
00167
00168 object->scope = group->g.determ.var_scope;
00169
00170 for (i = 0; i < group->g.determ.num_adjusts; i++) {
00171 DeterministicSpriteGroupAdjust *adjust = &group->g.determ.adjusts[i];
00172
00173
00174 bool available = true;
00175 if (adjust->variable == 0x7E) {
00176 ResolverObject subobject = *object;
00177 subobject.procedure_call = true;
00178 const SpriteGroup *subgroup = Resolve(adjust->subroutine, &subobject);
00179 if (subgroup == NULL || subgroup->type != SGT_CALLBACK) {
00180 value = CALLBACK_FAILED;
00181 } else {
00182 value = subgroup->g.callback.result;
00183 }
00184 } else {
00185 value = GetVariable(object, adjust->variable, adjust->parameter, &available);
00186 }
00187
00188 if (!available) {
00189
00190
00191 return Resolve(group->g.determ.num_ranges > 0 ? group->g.determ.ranges[0].group : group->g.determ.default_group, object);
00192 }
00193
00194 switch (group->g.determ.size) {
00195 case DSG_SIZE_BYTE: value = EvalAdjustT<uint8, int8> (adjust, object, last_value, value); break;
00196 case DSG_SIZE_WORD: value = EvalAdjustT<uint16, int16>(adjust, object, last_value, value); break;
00197 case DSG_SIZE_DWORD: value = EvalAdjustT<uint32, int32>(adjust, object, last_value, value); break;
00198 default: NOT_REACHED(); break;
00199 }
00200 last_value = value;
00201 }
00202
00203 object->last_value = last_value;
00204
00205 if (group->g.determ.num_ranges == 0) {
00206
00207 if (value != CALLBACK_FAILED) value = GB(value, 0, 15);
00208 nvarzero.type = SGT_CALLBACK;
00209 nvarzero.g.callback.result = value;
00210 return &nvarzero;
00211 }
00212
00213 for (i = 0; i < group->g.determ.num_ranges; i++) {
00214 if (group->g.determ.ranges[i].low <= value && value <= group->g.determ.ranges[i].high) {
00215 return Resolve(group->g.determ.ranges[i].group, object);
00216 }
00217 }
00218
00219 return Resolve(group->g.determ.default_group, object);
00220 }
00221
00222
00223 static inline const SpriteGroup *ResolveRandom(const SpriteGroup *group, ResolverObject *object)
00224 {
00225 uint32 mask;
00226 byte index;
00227
00228 object->scope = group->g.random.var_scope;
00229 object->count = group->g.random.count;
00230
00231 if (object->trigger != 0) {
00232
00233
00234 byte waiting_triggers = object->GetTriggers(object);
00235 byte match = group->g.random.triggers & (waiting_triggers | object->trigger);
00236 bool res;
00237
00238 res = (group->g.random.cmp_mode == RSG_CMP_ANY) ?
00239 (match != 0) : (match == group->g.random.triggers);
00240
00241 if (res) {
00242 waiting_triggers &= ~match;
00243 object->reseed |= (group->g.random.num_groups - 1) << group->g.random.lowest_randbit;
00244 } else {
00245 waiting_triggers |= object->trigger;
00246 }
00247
00248 object->SetTriggers(object, waiting_triggers);
00249 }
00250
00251 mask = (group->g.random.num_groups - 1) << group->g.random.lowest_randbit;
00252 index = (object->GetRandomBits(object) & mask) >> group->g.random.lowest_randbit;
00253
00254 return Resolve(group->g.random.groups[index], object);
00255 }
00256
00257
00258
00259 const SpriteGroup *Resolve(const SpriteGroup *group, ResolverObject *object)
00260 {
00261
00262 if (group == NULL) return NULL;
00263
00264 switch (group->type) {
00265 case SGT_REAL: return object->ResolveReal(object, group);
00266 case SGT_DETERMINISTIC: return ResolveVariable(group, object);
00267 case SGT_RANDOMIZED: return ResolveRandom(group, object);
00268 default: return group;
00269 }
00270 }