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1 #include <stdlib.h>
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2 #include <string.h>
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3 #include <assert.h>
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4 #include "tgi_impl.h"
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5 #include "object.h"
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6 #include "dynarr.h"
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7
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8 struct tinygi *tgi_init(void)
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9 {
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10 struct tinygi *tgi;
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11
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12 if(!(tgi = malloc(sizeof *tgi))) {
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13 tgi_log("failed to allocate memory\n");
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14 return 0;
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15 }
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16 if(!(tgi->objects = dynarr_alloc(0, sizeof *tgi->objects))) {
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17 tgi_log("failed to allocate objects array\n");
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18 free(tgi);
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19 return 0;
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20 }
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21
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22 return tgi;
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23 }
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24
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25 void tgi_destroy(struct tinygi *tgi)
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26 {
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27 tgi_clear_scene(tgi);
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28 free(tgi);
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29 }
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30
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31 void tgi_clear_scene(struct tinygi *tgi)
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32 {
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33 int i, nobj = dynarr_size(tgi->objects);
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34
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35 for(i=0; i<nobj; i++) {
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36 tgi_destroy_object(tgi->objects[i]);
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37 }
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38 tgi->objects = dynarr_resize(tgi->objects, 0);
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39 assert(tgi->objects);
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40 }
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41
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42 int tgi_load_scene(struct tinygi *tgi, const char *fname)
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43 {
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44 return -1; /* TODO implement later */
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45 }
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46
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47 void tgi_add_object(struct tinygi *tgi, struct tgi_object *o)
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48 {
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49 tgi->objects = dynarr_push(tgi->objects, o);
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50 assert(tgi->objects);
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51 }
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52
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53 int tgi_remove_object(struct tinygi *tgi, struct tgi_object *o)
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54 {
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55 int i, idx = -1, sz = dynarr_size(tgi->objects);
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56
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57 if(!sz) return -1;
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58
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59 for(i=0; i<sz; i++) {
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60 if(tgi->objects[i] == o) {
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61 idx = i;
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62 break;
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63 }
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64 }
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65 if(idx == -1) {
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66 return -1;
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67 }
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68
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69 tgi->objects[idx] = tgi->objects[sz - 1];
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70 tgi->objects = dynarr_pop(tgi->objects);
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71 assert(tgi->objects);
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72 return 0;
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73 }
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74
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75 struct tgi_object *tgi_find_object(struct tinygi *tgi, const char *name)
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76 {
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77 int i, sz = dynarr_size(tgi->objects);
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78
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79 for(i=0; i<sz; i++) {
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80 if(strcmp(tgi->objects[i]->name, name) == 0) {
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81 return tgi->objects[i];
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82 }
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83 }
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84 return 0;
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85 }
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86
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87
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88 struct tgi_object *tgi_get_object(struct tinygi *tgi, int idx)
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89 {
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90 return tgi->objects[idx];
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91 }
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92
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93 int tgi_get_object_count(struct tinygi *tgi)
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94 {
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95 return dynarr_size(tgi->objects);
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96 }
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97
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98
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