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annotate libmlk-core/mlk/core/action-stack.c @ 646:7e1eb7f6c049 default tip @

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misc: remove .clang
author David Demelier <markand@malikania.fr>
date Sun, 04 Feb 2024 15:24:37 +0100
parents 4349b591c3ac
children
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1 /*
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2 * action-stack.h -- convenient stack of actions
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3 *
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4 * Copyright (c) 2020-2023 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <assert.h>
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20 #include <string.h>
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21
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22 #include "action-stack.h"
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23 #include "action.h"
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24 #include "core_p.h"
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25 #include "err.h"
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26
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27 #define FOREACH(st, iter) \
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28 for (size_t i = 0; i < (st)->actionsz && ((iter) = (st)->actions[i], 1); ++i)
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29
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30 void
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31 mlk_action_stack_init(struct mlk_action_stack *st)
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32 {
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33 assert(st);
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34
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35 for (size_t i = 0; i < st->actionsz; ++i)
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36 st->actions[i] = NULL;
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37 }
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38
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39 int
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40 mlk_action_stack_add(struct mlk_action_stack *st, struct mlk_action *act)
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41 {
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42 assert(st);
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43 assert(act);
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44
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45 for (size_t i = 0; i < st->actionsz; ++i) {
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46 if (!st->actions[i]) {
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47 st->actions[i] = act;
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48 return 0;
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49 }
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50 }
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51
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52 return mlk_errf(_("no space in action stack"));
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53 }
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54
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55 int
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56 mlk_action_stack_completed(const struct mlk_action_stack *st)
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57 {
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58 assert(st);
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59
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60 struct mlk_action *act;
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61
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62 FOREACH(st, act)
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63 if (act)
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64 return 0;
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65
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66 return 1;
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67 }
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68
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69 void
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70 mlk_action_stack_start(struct mlk_action_stack *st)
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71 {
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72 assert(st);
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73
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74 struct mlk_action *act;
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75
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76 FOREACH(st, act)
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77 if (act)
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78 mlk_action_start(act);
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79 }
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80
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81 void
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82 mlk_action_stack_handle(struct mlk_action_stack *st, const union mlk_event *ev)
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83 {
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84 assert(st);
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85 assert(ev);
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86
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87 struct mlk_action *act;
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88
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89 FOREACH(st, act)
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90 if (act)
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91 mlk_action_handle(act, ev);
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92 }
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93
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94 int
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95 mlk_action_stack_update(struct mlk_action_stack *st, unsigned int ticks)
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96 {
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97 assert(st);
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98
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99 struct mlk_action *act;
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100
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101 for (size_t i = 0; i < st->actionsz; ++i) {
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102 act = st->actions[i];
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103
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104 if (act && mlk_action_update(act, ticks)) {
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105 mlk_action_end(act);
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106 mlk_action_finish(act);
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107 st->actions[i] = NULL;
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108 }
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109 }
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110
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111 /*
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112 * We process all actions again in case the user modified the stack
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113 * within their update function.
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114 */
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115 return mlk_action_stack_completed(st);
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116 }
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117
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118 void
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119 mlk_action_stack_draw(const struct mlk_action_stack *st)
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120 {
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121 assert(st);
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122
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123 struct mlk_action *act;
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124
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125 FOREACH(st, act)
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126 if (act)
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127 mlk_action_draw(act);
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128 }
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129
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130 void
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131 mlk_action_stack_finish(struct mlk_action_stack *st)
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132 {
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133 assert(st);
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134
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135 struct mlk_action *act;
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136
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137 FOREACH(st, act) {
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138 if (act) {
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139 mlk_action_end(act);
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140 mlk_action_finish(act);
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141 }
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142 }
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143
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144 for (size_t i = 0; i < st->actionsz; ++i)
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145 st->actions[i] = NULL;
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146 }