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annotate libmlk-rpg/rpg/battle-state-item.c @ 291:5d8700074dd7

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rpg: add battle_message module
author David Demelier <markand@malikania.fr>
date Fri, 08 Jan 2021 13:15:24 +0100
parents 9948e288925b
children 196264679079
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1 /*
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2 * battle-state-item.c -- battle state (using item)
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3 *
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4 * Copyright (c) 2020 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 <stdlib.h>
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21
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22 #include <core/alloc.h>
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23 #include <core/panic.h>
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24
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25 #include <rpg/inventory.h>
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26 #include <rpg/item.h>
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27
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28 #include "battle-entity-state.h"
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29 #include "battle-message.h"
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30 #include "battle-state.h"
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31 #include "battle.h"
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32
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33 enum substate {
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34 SUBSTATE_ADVANCING,
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35 SUBSTATE_MESSAGE,
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36 SUBSTATE_RETURNING
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37 };
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38
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39 struct self {
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40 enum substate substate;
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41 struct battle_message msg;
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42 struct battle_entity *source;
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43 struct battle_entity *target;
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44 struct battle_state state;
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45 struct inventory_slot *slot;
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46 int origin_x;
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47 };
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48
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49 static bool
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50 update(struct battle_state *st, struct battle *bt, unsigned int ticks)
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51 {
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52 struct self *self = st->data;
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53
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54 switch (self->substate) {
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55 case SUBSTATE_ADVANCING:
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56 /* Entity is updating from battle, so just inspect its status. */
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57 if (battle_entity_update(self->source, 0)) {
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58 self->substate = SUBSTATE_MESSAGE;
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59 battle_entity_state_normal(self->source);
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60 }
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61 break;
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62 case SUBSTATE_MESSAGE:
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63 if (battle_message_update(&self->msg, ticks)) {
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64 self->substate = SUBSTATE_RETURNING;
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65 battle_entity_state_moving(self->source, self->origin_x, self->source->y);
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66 }
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67 break;
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68 default:
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69 if (battle_entity_update(self->source, 0)) {
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70 battle_entity_state_normal(self->source);
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71 battle_use(bt, self->slot->item, self->source->ch, self->target->ch);
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72 }
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73 break;
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74 }
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75
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76 return false;
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77 }
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78
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79 static void
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80 draw(const struct battle_state *st, const struct battle *bt)
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81 {
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82 struct self *self = st->data;
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83
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84 if (self->substate == SUBSTATE_MESSAGE)
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85 battle_message_draw(&self->msg);
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86 }
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87
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88 static void
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89 finish(struct battle_state *st, struct battle *bt)
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90 {
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91 (void)bt;
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92
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93 free(st->data);
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94 }
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95
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96 void
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97 battle_state_item(struct battle *bt,
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98 struct character *source,
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99 struct character *target,
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100 struct inventory_slot *slot)
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101 {
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102 assert(bt);
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103 assert(source);
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104 assert(target);
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105 assert(slot);
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106
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107 struct self *self;
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108 unsigned int lw, lh;
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109
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110 if (!(self = alloc_new0(sizeof (*self))))
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111 panic();
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112
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113 self->source = battle_find(bt, source);
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114 self->target = battle_find(bt, target);
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115 self->slot = slot;
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116 self->origin_x = self->source->x;
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117
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118 self->msg.text = slot->item->name;
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119 self->msg.theme = bt->theme;
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120
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121 self->state.data = self;
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122 self->state.update = update;
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123 self->state.draw = draw;
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124 self->state.finish = finish;
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125
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126 battle_entity_state_moving(self->source, self->origin_x - 100, self->source->y);
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127 battle_switch(bt, &self->state);
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128 }