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annotate src/newgrf_spritegroup.cpp @ 9088:5b5958727985 draft

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(svn r12947) -Fix: keep only first 15 bits for non failed callback results
author glx <glx@openttd.org>
date Sun, 04 May 2008 22:32:25 +0000
parents 94bb527c979f
children d48433370037
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
5584
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1 /* $Id$ */
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2
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belugas <belugas@openttd.org>
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3 /** @file newgrf_spritegroup.cpp */
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4
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5 #include "stdafx.h"
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6 #include "openttd.h"
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7 #include "variables.h"
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8 #include "landscape.h"
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9 #include "oldpool.h"
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10 #include "newgrf.h"
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11 #include "newgrf_callbacks.h"
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12 #include "newgrf_spritegroup.h"
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13 #include "sprite.h"
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14 #include "date_func.h"
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15 #include "settings_type.h"
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17 static void SpriteGroupPoolCleanBlock(uint start_item, uint end_item);
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18
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19 static uint _spritegroup_count = 0;
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20 STATIC_OLD_POOL(SpriteGroup, SpriteGroup, 9, 250, NULL, SpriteGroupPoolCleanBlock)
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21
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22 static void DestroySpriteGroup(SpriteGroup *group)
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23 {
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24 /* Free dynamically allocated memory */
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25 /* XXX Cast away the consts due to MSVC being buggy... */
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26 switch (group->type) {
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27 case SGT_REAL:
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28 free((SpriteGroup**)group->g.real.loaded);
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29 free((SpriteGroup**)group->g.real.loading);
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30 break;
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31
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32 case SGT_DETERMINISTIC:
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33 free(group->g.determ.adjusts);
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34 free(group->g.determ.ranges);
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35 break;
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36
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37 case SGT_RANDOMIZED:
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38 free((SpriteGroup**)group->g.random.groups);
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39 break;
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40
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41 case SGT_TILELAYOUT:
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42 free((void*)group->g.layout.dts->seq);
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43 free(group->g.layout.dts);
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44 break;
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45
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46 default:
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47 break;
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48 }
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49 }
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50
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51 static void SpriteGroupPoolCleanBlock(uint start_item, uint end_item)
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52 {
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53 uint i;
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54
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55 for (i = start_item; i <= end_item; i++) {
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56 DestroySpriteGroup(GetSpriteGroup(i));
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57 }
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58 }
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59
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60
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61 /* Allocate a new SpriteGroup */
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62 SpriteGroup *AllocateSpriteGroup()
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63 {
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64 /* This is totally different to the other pool allocators, as we never remove an item from the pool. */
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65 if (_spritegroup_count == GetSpriteGroupPoolSize()) {
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66 if (!_SpriteGroup_pool.AddBlockToPool()) return NULL;
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67 }
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68
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69 return GetSpriteGroup(_spritegroup_count++);
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70 }
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71
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72
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73 void InitializeSpriteGroupPool()
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74 {
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75 _SpriteGroup_pool.CleanPool();
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76
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77 _spritegroup_count = 0;
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78 }
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79
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80 TemporaryStorageArray<uint32, 0x110> _temp_store;
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81
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82
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83 static inline uint32 GetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
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84 {
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85 /* First handle variables common with Action7/9/D */
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86 uint32 value;
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87 if (GetGlobalVariable(variable, &value)) return value;
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88
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89 /* Non-common variable */
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90 switch (variable) {
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91 case 0x0C: return object->callback;
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92 case 0x10: return object->callback_param1;
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93 case 0x18: return object->callback_param2;
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94 case 0x1C: return object->last_value;
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95
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96 case 0x7D: return _temp_store.Get(parameter);
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97
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98 /* Not a common variable, so evalute the feature specific variables */
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99 default: return object->GetVariable(object, variable, parameter, available);
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100 }
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101 }
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102
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103
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104 /**
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105 * Rotate val rot times to the right
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106 * @param val the value to rotate
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107 * @param rot the amount of times to rotate
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diff changeset
108 * @return the rotated value
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
109 */
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
110 static uint32 RotateRight(uint32 val, uint32 rot)
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
111 {
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
112 /* Do not rotate more than necessary */
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
113 rot %= 32;
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
114
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
115 return (val >> rot) | (val << (32 - rot));
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
116 }
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
117
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
118
5600
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
119 /* Evaluate an adjustment for a variable of the given size.
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
120 * U is the unsigned type and S is the signed type to use. */
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
121 template <typename U, typename S>
7610
b5bdd89a6aa2 (svn r11139) -Codechange: add support for persistent storage for NewGRFs.
rubidium <rubidium@openttd.org>
parents: 7609
diff changeset
122 static U EvalAdjustT(const DeterministicSpriteGroupAdjust *adjust, ResolverObject *object, U last_value, uint32 value)
5600
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
123 {
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
124 value >>= adjust->shift_num;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
125 value &= adjust->and_mask;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
126
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
127 if (adjust->type != DSGA_TYPE_NONE) value += (S)adjust->add_val;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
128
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
129 switch (adjust->type) {
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
130 case DSGA_TYPE_DIV: value /= (S)adjust->divmod_val; break;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
131 case DSGA_TYPE_MOD: value %= (U)adjust->divmod_val; break;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
132 case DSGA_TYPE_NONE: break;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
133 }
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
134
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
135 switch (adjust->operation) {
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
136 case DSGA_OP_ADD: return last_value + value;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
137 case DSGA_OP_SUB: return last_value - value;
5601
ca6b459bf488 (svn r8055) -Codechange: Replace the different max, dmax, maxu whatever macros by a simple template function max(), that requires two arguments of the same type. While I'm at it change a variable called "max" to "maxval" in a function that calls max().
celestar <celestar@openttd.org>
parents: 5600
diff changeset
138 case DSGA_OP_SMIN: return min((S)last_value, (S)value);
ca6b459bf488 (svn r8055) -Codechange: Replace the different max, dmax, maxu whatever macros by a simple template function max(), that requires two arguments of the same type. While I'm at it change a variable called "max" to "maxval" in a function that calls max().
celestar <celestar@openttd.org>
parents: 5600
diff changeset
139 case DSGA_OP_SMAX: return max((S)last_value, (S)value);
5600
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
140 case DSGA_OP_UMIN: return min((U)last_value, (U)value);
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
141 case DSGA_OP_UMAX: return max((U)last_value, (U)value);
6617
bfd51a1acb47 (svn r9837) -Fix: [NewGRF] Catch occurance of division-by-zero in varaction handling.
peter1138 <peter1138@openttd.org>
parents: 6521
diff changeset
142 case DSGA_OP_SDIV: return value == 0 ? (S)last_value : (S)last_value / (S)value;
bfd51a1acb47 (svn r9837) -Fix: [NewGRF] Catch occurance of division-by-zero in varaction handling.
peter1138 <peter1138@openttd.org>
parents: 6521
diff changeset
143 case DSGA_OP_SMOD: return value == 0 ? (S)last_value : (S)last_value % (S)value;
bfd51a1acb47 (svn r9837) -Fix: [NewGRF] Catch occurance of division-by-zero in varaction handling.
peter1138 <peter1138@openttd.org>
parents: 6521
diff changeset
144 case DSGA_OP_UDIV: return value == 0 ? (U)last_value : (U)last_value / (U)value;
bfd51a1acb47 (svn r9837) -Fix: [NewGRF] Catch occurance of division-by-zero in varaction handling.
peter1138 <peter1138@openttd.org>
parents: 6521
diff changeset
145 case DSGA_OP_UMOD: return value == 0 ? (U)last_value : (U)last_value % (U)value;
5600
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
146 case DSGA_OP_MUL: return last_value * value;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
147 case DSGA_OP_AND: return last_value & value;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
148 case DSGA_OP_OR: return last_value | value;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
149 case DSGA_OP_XOR: return last_value ^ value;
7609
9e4c3b886ccb (svn r11138) -Codechange: prepare some subsystems for persistent storage for NewGRFs.
rubidium <rubidium@openttd.org>
parents: 7600
diff changeset
150 case DSGA_OP_STO: _temp_store.Store(value, last_value); return last_value;
6521
9aecb1a6dea5 (svn r9707) -Codechange: Add some support for NewGRF var 7D, temporary storage array.
peter1138 <peter1138@openttd.org>
parents: 6357
diff changeset
151 case DSGA_OP_RST: return value;
7610
b5bdd89a6aa2 (svn r11139) -Codechange: add support for persistent storage for NewGRFs.
rubidium <rubidium@openttd.org>
parents: 7609
diff changeset
152 case DSGA_OP_STOP: if (object->psa != NULL) object->psa->Store(value, last_value); return last_value;
7612
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
153 case DSGA_OP_ROR: return RotateRight(last_value, value);
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
154 case DSGA_OP_SCMP: return ((S)last_value == (S)value) ? 1 : ((S)last_value < (S)value ? 0 : 2);
967884079cd0 (svn r11141) -Codechange: add support for NewGRF's varaction2 operators 11, 12 and 13.
rubidium <rubidium@openttd.org>
parents: 7610
diff changeset
155 case DSGA_OP_UCMP: return ((U)last_value == (U)value) ? 1 : ((U)last_value < (U)value ? 0 : 2);
5600
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
156 default: return value;
37c5d98c3fa6 (svn r8054) -Codechange: Use a template function instead of a macro for evaluating NewGRF var adjusts
peter1138 <peter1138@openttd.org>
parents: 5587
diff changeset
157 }
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
158 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
159
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
160
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
161 static inline const SpriteGroup *ResolveVariable(const SpriteGroup *group, ResolverObject *object)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
162 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
163 static SpriteGroup nvarzero;
5607
f746786ae8b3 (svn r8063) -Codechange: When evaluating newgrf varaction2s the 'last value' should start off at 0, and the result of the operation is remembered.
peter1138 <peter1138@openttd.org>
parents: 5606
diff changeset
164 uint32 last_value = 0;
5606
1176330381e4 (svn r8062) -Codechange: change newgrf varaction2 value from signed to unsigned
peter1138 <peter1138@openttd.org>
parents: 5604
diff changeset
165 uint32 value = 0;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
166 uint i;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
167
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
168 object->scope = group->g.determ.var_scope;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
169
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
170 for (i = 0; i < group->g.determ.num_adjusts; i++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
171 DeterministicSpriteGroupAdjust *adjust = &group->g.determ.adjusts[i];
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
172
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
173 /* Try to get the variable. We shall assume it is available, unless told otherwise. */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
174 bool available = true;
5617
ef79a2605252 (svn r8075) -Feature: Add support for variable 7E - subroutines. (peter1138)
maedhros <maedhros@openttd.org>
parents: 5607
diff changeset
175 if (adjust->variable == 0x7E) {
5622
b6656f3088b3 (svn r8081) -Fix (r8075): Use a copy of the resolver object instead of the using the existing one. This fixes problems with the object scope setting.
peter1138 <peter1138@openttd.org>
parents: 5617
diff changeset
176 ResolverObject subobject = *object;
8685
a148a6ee005d (svn r12352) -Fix: Some callback-results were treated as 8 bit, when they were 15 bit, and vice versa.
frosch <frosch@openttd.org>
parents: 8561
diff changeset
177 subobject.procedure_call = true;
7609
9e4c3b886ccb (svn r11138) -Codechange: prepare some subsystems for persistent storage for NewGRFs.
rubidium <rubidium@openttd.org>
parents: 7600
diff changeset
178 const SpriteGroup *subgroup = Resolve(adjust->subroutine, &subobject);
5617
ef79a2605252 (svn r8075) -Feature: Add support for variable 7E - subroutines. (peter1138)
maedhros <maedhros@openttd.org>
parents: 5607
diff changeset
179 if (subgroup == NULL || subgroup->type != SGT_CALLBACK) {
ef79a2605252 (svn r8075) -Feature: Add support for variable 7E - subroutines. (peter1138)
maedhros <maedhros@openttd.org>
parents: 5607
diff changeset
180 value = CALLBACK_FAILED;
ef79a2605252 (svn r8075) -Feature: Add support for variable 7E - subroutines. (peter1138)
maedhros <maedhros@openttd.org>
parents: 5607
diff changeset
181 } else {
ef79a2605252 (svn r8075) -Feature: Add support for variable 7E - subroutines. (peter1138)
maedhros <maedhros@openttd.org>
parents: 5607
diff changeset
182 value = subgroup->g.callback.result;
ef79a2605252 (svn r8075) -Feature: Add support for variable 7E - subroutines. (peter1138)
maedhros <maedhros@openttd.org>
parents: 5607
diff changeset
183 }
ef79a2605252 (svn r8075) -Feature: Add support for variable 7E - subroutines. (peter1138)
maedhros <maedhros@openttd.org>
parents: 5607
diff changeset
184 } else {
ef79a2605252 (svn r8075) -Feature: Add support for variable 7E - subroutines. (peter1138)
maedhros <maedhros@openttd.org>
parents: 5607
diff changeset
185 value = GetVariable(object, adjust->variable, adjust->parameter, &available);
ef79a2605252 (svn r8075) -Feature: Add support for variable 7E - subroutines. (peter1138)
maedhros <maedhros@openttd.org>
parents: 5607
diff changeset
186 }
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
187
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
188 if (!available) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
189 /* Unsupported property: skip further processing and return either
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
190 * the group from the first range or the default group. */
7609
9e4c3b886ccb (svn r11138) -Codechange: prepare some subsystems for persistent storage for NewGRFs.
rubidium <rubidium@openttd.org>
parents: 7600
diff changeset
191 return Resolve(group->g.determ.num_ranges > 0 ? group->g.determ.ranges[0].group : group->g.determ.default_group, object);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
192 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
193
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
194 switch (group->g.determ.size) {
7610
b5bdd89a6aa2 (svn r11139) -Codechange: add support for persistent storage for NewGRFs.
rubidium <rubidium@openttd.org>
parents: 7609
diff changeset
195 case DSG_SIZE_BYTE: value = EvalAdjustT<uint8, int8> (adjust, object, last_value, value); break;
b5bdd89a6aa2 (svn r11139) -Codechange: add support for persistent storage for NewGRFs.
rubidium <rubidium@openttd.org>
parents: 7609
diff changeset
196 case DSG_SIZE_WORD: value = EvalAdjustT<uint16, int16>(adjust, object, last_value, value); break;
b5bdd89a6aa2 (svn r11139) -Codechange: add support for persistent storage for NewGRFs.
rubidium <rubidium@openttd.org>
parents: 7609
diff changeset
197 case DSG_SIZE_DWORD: value = EvalAdjustT<uint32, int32>(adjust, object, last_value, value); break;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
198 default: NOT_REACHED(); break;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
199 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
200 last_value = value;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
201 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
202
5607
f746786ae8b3 (svn r8063) -Codechange: When evaluating newgrf varaction2s the 'last value' should start off at 0, and the result of the operation is remembered.
peter1138 <peter1138@openttd.org>
parents: 5606
diff changeset
203 object->last_value = last_value;
f746786ae8b3 (svn r8063) -Codechange: When evaluating newgrf varaction2s the 'last value' should start off at 0, and the result of the operation is remembered.
peter1138 <peter1138@openttd.org>
parents: 5606
diff changeset
204
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
205 if (group->g.determ.num_ranges == 0) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
206 /* nvar == 0 is a special case -- we turn our value into a callback result */
9088
5b5958727985 (svn r12947) -Fix: keep only first 15 bits for non failed callback results
glx <glx@openttd.org>
parents: 9020
diff changeset
207 if (value != CALLBACK_FAILED) value = GB(value, 0, 15);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
208 nvarzero.type = SGT_CALLBACK;
9020
94bb527c979f (svn r12819) -Codechange: handle more NewGRFs in the same way as TTDP does it, i.e. testing the low bits for 0xFF or 0 instead of all bits.
rubidium <rubidium@openttd.org>
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209 nvarzero.g.callback.result = value;
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210 return &nvarzero;
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211 }
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212
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213 for (i = 0; i < group->g.determ.num_ranges; i++) {
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1176330381e4 (svn r8062) -Codechange: change newgrf varaction2 value from signed to unsigned
peter1138 <peter1138@openttd.org>
parents: 5604
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214 if (group->g.determ.ranges[i].low <= value && value <= group->g.determ.ranges[i].high) {
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9e4c3b886ccb (svn r11138) -Codechange: prepare some subsystems for persistent storage for NewGRFs.
rubidium <rubidium@openttd.org>
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215 return Resolve(group->g.determ.ranges[i].group, object);
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216 }
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217 }
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218
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219 return Resolve(group->g.determ.default_group, object);
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220 }
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221
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222
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223 static inline const SpriteGroup *ResolveRandom(const SpriteGroup *group, ResolverObject *object)
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224 {
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225 uint32 mask;
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226 byte index;
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227
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228 object->scope = group->g.random.var_scope;
8756
ae0ec91bb55e (svn r12452) -Feature: [NewGRF] Add random action 2 type 84. For vehicles only.
glx <glx@openttd.org>
parents: 8714
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229 object->count = group->g.random.count;
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230
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231 if (object->trigger != 0) {
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232 /* Handle triggers */
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233 /* Magic code that may or may not do the right things... */
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KUDr <KUDr@openttd.org>
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234 byte waiting_triggers = object->GetTriggers(object);
7862
f5474c8b9b6f (svn r11412) -Fix (r11403): animation was not turned on properly.
rubidium <rubidium@openttd.org>
parents: 7860
diff changeset
235 byte match = group->g.random.triggers & (waiting_triggers | object->trigger);
5584
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236 bool res;
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237
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238 res = (group->g.random.cmp_mode == RSG_CMP_ANY) ?
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239 (match != 0) : (match == group->g.random.triggers);
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240
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241 if (res) {
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242 waiting_triggers &= ~match;
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KUDr <KUDr@openttd.org>
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243 object->reseed |= (group->g.random.num_groups - 1) << group->g.random.lowest_randbit;
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244 } else {
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245 waiting_triggers |= object->trigger;
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246 }
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247
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248 object->SetTriggers(object, waiting_triggers);
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249 }
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250
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251 mask = (group->g.random.num_groups - 1) << group->g.random.lowest_randbit;
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252 index = (object->GetRandomBits(object) & mask) >> group->g.random.lowest_randbit;
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253
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rubidium <rubidium@openttd.org>
parents: 7600
diff changeset
254 return Resolve(group->g.random.groups[index], object);
5584
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255 }
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256
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257
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258 /* ResolverObject (re)entry point */
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rubidium <rubidium@openttd.org>
parents: 7600
diff changeset
259 const SpriteGroup *Resolve(const SpriteGroup *group, ResolverObject *object)
5584
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260 {
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261 /* We're called even if there is no group, so quietly return nothing */
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KUDr <KUDr@openttd.org>
parents:
diff changeset
262 if (group == NULL) return NULL;
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parents:
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263
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KUDr <KUDr@openttd.org>
parents:
diff changeset
264 switch (group->type) {
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KUDr <KUDr@openttd.org>
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diff changeset
265 case SGT_REAL: return object->ResolveReal(object, group);
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KUDr <KUDr@openttd.org>
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266 case SGT_DETERMINISTIC: return ResolveVariable(group, object);
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KUDr <KUDr@openttd.org>
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267 case SGT_RANDOMIZED: return ResolveRandom(group, object);
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268 default: return group;
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269 }
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parents:
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270 }