00001
00002
00003
00004
00005
00006
00007
00008
00009
00012 #include "stdafx.h"
00013 #include "newgrf_spritegroup.h"
00014 #include "core/pool_func.hpp"
00015
00016 SpriteGroupPool _spritegroup_pool("SpriteGroup");
00017 INSTANTIATE_POOL_METHODS(SpriteGroup)
00018
00019 RealSpriteGroup::~RealSpriteGroup()
00020 {
00021 free(this->loaded);
00022 free(this->loading);
00023 }
00024
00025 DeterministicSpriteGroup::~DeterministicSpriteGroup()
00026 {
00027 free(this->adjusts);
00028 free(this->ranges);
00029 }
00030
00031 RandomizedSpriteGroup::~RandomizedSpriteGroup()
00032 {
00033 free(this->groups);
00034 }
00035
00036 TemporaryStorageArray<int32, 0x110> _temp_store;
00037
00038
00039 static inline uint32 GetVariable(const ResolverObject *object, byte variable, uint32 parameter, bool *available)
00040 {
00041
00042 uint32 value;
00043 if (GetGlobalVariable(variable, &value, object->grffile)) return value;
00044
00045
00046 switch (variable) {
00047 case 0x0C: return object->callback;
00048 case 0x10: return object->callback_param1;
00049 case 0x18: return object->callback_param2;
00050 case 0x1C: return object->last_value;
00051
00052 case 0x5F: return (object->GetRandomBits(object) << 8) | object->GetTriggers(object);
00053
00054 case 0x7D: return _temp_store.GetValue(parameter);
00055
00056 case 0x7F:
00057 if (object == NULL || object->grffile == NULL) return 0;
00058 return object->grffile->GetParam(parameter);
00059
00060
00061 default: return object->GetVariable(object, variable, parameter, available);
00062 }
00063 }
00064
00065
00072 static uint32 RotateRight(uint32 val, uint32 rot)
00073 {
00074
00075 rot %= 32;
00076
00077 return (val >> rot) | (val << (32 - rot));
00078 }
00079
00080
00081
00082
00083 template <typename U, typename S>
00084 static U EvalAdjustT(const DeterministicSpriteGroupAdjust *adjust, ResolverObject *object, U last_value, uint32 value)
00085 {
00086 value >>= adjust->shift_num;
00087 value &= adjust->and_mask;
00088
00089 if (adjust->type != DSGA_TYPE_NONE) value += (S)adjust->add_val;
00090
00091 switch (adjust->type) {
00092 case DSGA_TYPE_DIV: value /= (S)adjust->divmod_val; break;
00093 case DSGA_TYPE_MOD: value %= (U)adjust->divmod_val; break;
00094 case DSGA_TYPE_NONE: break;
00095 }
00096
00097 switch (adjust->operation) {
00098 case DSGA_OP_ADD: return last_value + value;
00099 case DSGA_OP_SUB: return last_value - value;
00100 case DSGA_OP_SMIN: return min((S)last_value, (S)value);
00101 case DSGA_OP_SMAX: return max((S)last_value, (S)value);
00102 case DSGA_OP_UMIN: return min((U)last_value, (U)value);
00103 case DSGA_OP_UMAX: return max((U)last_value, (U)value);
00104 case DSGA_OP_SDIV: return value == 0 ? (S)last_value : (S)last_value / (S)value;
00105 case DSGA_OP_SMOD: return value == 0 ? (S)last_value : (S)last_value % (S)value;
00106 case DSGA_OP_UDIV: return value == 0 ? (U)last_value : (U)last_value / (U)value;
00107 case DSGA_OP_UMOD: return value == 0 ? (U)last_value : (U)last_value % (U)value;
00108 case DSGA_OP_MUL: return last_value * value;
00109 case DSGA_OP_AND: return last_value & value;
00110 case DSGA_OP_OR: return last_value | value;
00111 case DSGA_OP_XOR: return last_value ^ value;
00112 case DSGA_OP_STO: _temp_store.StoreValue((U)value, (S)last_value); return last_value;
00113 case DSGA_OP_RST: return value;
00114 case DSGA_OP_STOP: if (object->StorePSA != NULL) object->StorePSA(object, (U)value, (S)last_value); return last_value;
00115 case DSGA_OP_ROR: return RotateRight(last_value, value);
00116 case DSGA_OP_SCMP: return ((S)last_value == (S)value) ? 1 : ((S)last_value < (S)value ? 0 : 2);
00117 case DSGA_OP_UCMP: return ((U)last_value == (U)value) ? 1 : ((U)last_value < (U)value ? 0 : 2);
00118 case DSGA_OP_SHL: return (U)last_value << ((U)value & 0x1F);
00119 case DSGA_OP_SHR: return (U)last_value >> ((U)value & 0x1F);
00120 case DSGA_OP_SAR: return (S)last_value >> ((U)value & 0x1F);
00121 default: return value;
00122 }
00123 }
00124
00125
00126 const SpriteGroup *DeterministicSpriteGroup::Resolve(ResolverObject *object) const
00127 {
00128 uint32 last_value = 0;
00129 uint32 value = 0;
00130 uint i;
00131
00132 object->scope = this->var_scope;
00133
00134 for (i = 0; i < this->num_adjusts; i++) {
00135 DeterministicSpriteGroupAdjust *adjust = &this->adjusts[i];
00136
00137
00138 bool available = true;
00139 if (adjust->variable == 0x7E) {
00140 const SpriteGroup *subgroup = SpriteGroup::Resolve(adjust->subroutine, object);
00141 if (subgroup == NULL) {
00142 value = CALLBACK_FAILED;
00143 } else {
00144 value = subgroup->GetCallbackResult();
00145 }
00146
00147
00148
00149 object->scope = this->var_scope;
00150 } else if (adjust->variable == 0x7B) {
00151 value = GetVariable(object, adjust->parameter, last_value, &available);
00152 } else {
00153 value = GetVariable(object, adjust->variable, adjust->parameter, &available);
00154 }
00155
00156 if (!available) {
00157
00158
00159 return SpriteGroup::Resolve(this->num_ranges > 0 ? this->ranges[0].group : this->default_group, object);
00160 }
00161
00162 switch (this->size) {
00163 case DSG_SIZE_BYTE: value = EvalAdjustT<uint8, int8> (adjust, object, last_value, value); break;
00164 case DSG_SIZE_WORD: value = EvalAdjustT<uint16, int16>(adjust, object, last_value, value); break;
00165 case DSG_SIZE_DWORD: value = EvalAdjustT<uint32, int32>(adjust, object, last_value, value); break;
00166 default: NOT_REACHED();
00167 }
00168 last_value = value;
00169 }
00170
00171 object->last_value = last_value;
00172
00173 if (this->num_ranges == 0) {
00174
00175 if (value != CALLBACK_FAILED) value = GB(value, 0, 15);
00176 static CallbackResultSpriteGroup nvarzero(0, true);
00177 nvarzero.result = value;
00178 return &nvarzero;
00179 }
00180
00181 for (i = 0; i < this->num_ranges; i++) {
00182 if (this->ranges[i].low <= value && value <= this->ranges[i].high) {
00183 return SpriteGroup::Resolve(this->ranges[i].group, object);
00184 }
00185 }
00186
00187 return SpriteGroup::Resolve(this->default_group, object);
00188 }
00189
00190
00191 const SpriteGroup *RandomizedSpriteGroup::Resolve(ResolverObject *object) const
00192 {
00193 uint32 mask;
00194 byte index;
00195
00196 object->scope = this->var_scope;
00197 object->count = this->count;
00198
00199 if (object->trigger != 0) {
00200
00201
00202 byte waiting_triggers = object->GetTriggers(object);
00203 byte match = this->triggers & (waiting_triggers | object->trigger);
00204 bool res = (this->cmp_mode == RSG_CMP_ANY) ? (match != 0) : (match == this->triggers);
00205
00206 if (res) {
00207 waiting_triggers &= ~match;
00208 object->reseed[this->var_scope] |= (this->num_groups - 1) << this->lowest_randbit;
00209 } else {
00210 waiting_triggers |= object->trigger;
00211 }
00212
00213 object->SetTriggers(object, waiting_triggers);
00214 }
00215
00216 mask = (this->num_groups - 1) << this->lowest_randbit;
00217 index = (object->GetRandomBits(object) & mask) >> this->lowest_randbit;
00218
00219 return SpriteGroup::Resolve(this->groups[index], object);
00220 }
00221
00222
00223 const SpriteGroup *RealSpriteGroup::Resolve(ResolverObject *object) const
00224 {
00225 return object->ResolveReal(object, this);
00226 }
00227
00235 const DrawTileSprites *TileLayoutSpriteGroup::ProcessRegisters(uint8 *stage) const
00236 {
00237 if (!this->dts.NeedsPreprocessing()) {
00238 if (stage != NULL && this->dts.consistent_max_offset > 0) *stage = GetConstructionStageOffset(*stage, this->dts.consistent_max_offset);
00239 return &this->dts;
00240 }
00241
00242 static DrawTileSprites result;
00243 uint8 actual_stage = stage != NULL ? *stage : 0;
00244 this->dts.PrepareLayout(0, 0, 0, actual_stage, false);
00245 this->dts.ProcessRegisters(0, 0, false);
00246 result.seq = this->dts.GetLayout(&result.ground);
00247
00248
00249 if (stage != NULL) *stage = 0;
00250
00251 return &result;
00252 }