回答編集履歴
1
m
test
CHANGED
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@@ -3,6 +3,18 @@
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3
3
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#include <stdlib.h>
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4
4
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5
5
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#include <stdbool.h>
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6
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+
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7
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typedef struct MISSILE {
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8
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9
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double x;
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10
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11
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double y;
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12
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13
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double angle;
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14
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15
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double speed;
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16
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17
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}
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6
18
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7
19
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typedef struct tag_missile_vec {
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8
20
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@@ -16,11 +28,13 @@
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16
28
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29
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18
30
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19
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-
missile_vec* missile_vec_new(size_t size, double x, double y, double angle, double speed) {
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31
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missile_vec* missile_vec_new(size_t size, size_t capacity, double x, double y, double angle, double speed) {
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32
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33
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if(capacity < size) return NULL;
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34
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35
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missile_vec* missile;
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36
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23
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-
if(NULL = (missile->data = malloc(
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37
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if(NULL = (missile->data = malloc(capacity * sizeof(MISSILE))) return NULL;
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38
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for(size_t i = 0; i < size; ++i){
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40
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@@ -38,7 +52,33 @@
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38
52
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missile->size = size;
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40
54
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55
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missile->capacity = capacity;
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56
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41
57
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return missile;
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58
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59
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}
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60
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61
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bool missile_vec_push(missile_vec* missile, const MISSILE* data)
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62
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63
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{
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64
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65
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if(NULL == missile || NULL == data) return false;
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66
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67
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if(capacity < size + 1){
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68
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69
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const size_t new_capacity = ((SIZE_MAX / 2) < missile->capacity) ? SIZE_MAX : missile->capacity * 2;
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70
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71
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if(NULL == (missile->data = realloc(missile->data, capacity * sizeof(MISSILE)))) return false;
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72
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73
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missile->capacity = new_capacity;
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74
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75
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}
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76
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77
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missile->data[missile->size] = *data;
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78
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79
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++missile->size;
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80
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81
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return true;
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42
82
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83
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}
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44
84
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@@ -56,13 +96,15 @@
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56
96
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57
97
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{
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58
98
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99
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if(NULL == missile) return;
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100
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59
101
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//do something
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60
102
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61
103
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}
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62
104
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63
105
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int main(){
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64
106
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65
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-
missile_vec* missile = missile_vec_new(10, 0, 0, 0, 0);
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107
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missile_vec* missile = missile_vec_new(10, 20, 0, 0, 0, 0);
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66
108
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67
109
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if(NULL == missile) return 1;
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68
110
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