1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
// -- internal --
// public
#include "rodeo/collision.h"
#include "rodeo/collision_t.h"
#include "rodeo/log.h"
// -- system --
#include <stdio.h>
bool irodeo_collision_2d_detect(
const cvec_collision_2d_item_data_value a,
const cvec_collision_2d_item_data_value b
)
{
return !(a.id.self_handle == b.id.self_handle ||
a.rect.x+a.dx > b.rect.x+b.dx + b.rect.width ||
b.rect.x+b.dx > a.rect.x+a.dx + a.rect.width ||
a.rect.y+a.dy > b.rect.y+b.dy + b.rect.height ||
b.rect.y+b.dy > a.rect.y+a.dy + a.rect.height);
}
rodeo_collision_2d_collection_t
rodeo_collision_2d_collection_create(void)
{
rodeo_collision_2d_collection_t result = {0};
result.data = calloc(1, sizeof(*result.data));
return result;
}
void
rodeo_collision_2d_collection_destroy(
rodeo_collision_2d_collection_t collection
)
{
c_foreach(i, cvec_collision_2d_item_data, collection.data->collection) {
free(i.ref->id.self_handle);
}
cvec_collision_2d_item_data_drop(&collection.data->collection);
free(collection.data);
}
rodeo_collision_2d_item_t
rodeo_collision_2d_item_create(
rodeo_collision_2d_collection_t collection,
rodeo_collision_2d_item_data_t item_params
)
{
bool rewrite_self_pointers = false;
intptr_t capacity = cvec_collision_2d_item_data_capacity(&collection.data->collection);
intptr_t size = cvec_collision_2d_item_data_size(&collection.data->collection);
if(capacity >= size)
{
rewrite_self_pointers = true;
}
rodeo_collision_2d_item_t result = {0};
result.data_handle = calloc(1, sizeof(result.data_handle));
*result.data_handle = cvec_collision_2d_item_data_push(
&collection.data->collection,
item_params
);
(*result.data_handle)->id.collection = collection;
(*result.data_handle)->id.self_handle = result.data_handle;
if(rewrite_self_pointers)
{
c_foreach(i, cvec_collision_2d_item_data, collection.data->collection) {
i.ref->id.collection.data = collection.data;
(*i.ref->id.self_handle) = i.ref;
}
}
return result;
}
void
rodeo_collision_2d_item_destroy(
rodeo_collision_2d_item_t item
)
{
if(item.data_handle == NULL || *item.data_handle == NULL)
{
rodeo_log(
rodeo_logLevel_warning,
"Attempted to destroy collision item that doesn't exist anymore"
);
if(item.data_handle != NULL)
{
free(item.data_handle);
}
return;
}
cvec_collision_2d_item_data *collection = &((*item.data_handle)->id.collection.data->collection);
// set the back item to point to deletion item
*cvec_collision_2d_item_data_back(collection)->id.self_handle = *item.data_handle;
// copy back item into deletion item
(**item.data_handle) = *cvec_collision_2d_item_data_back(collection);
cvec_collision_2d_item_data_pop(collection);
// free the handle
free(item.data_handle);
}
void
rodeo_collision_2d_collection_item_destroy_by_id(
rodeo_collision_2d_item_id_t id
)
{
rodeo_collision_2d_item_t item = rodeo_collision_2d_item_get_by_id(id);
rodeo_collision_2d_item_destroy(item);
}
rodeo_collision_2d_item_t
rodeo_collision_2d_item_get_by_id(
rodeo_collision_2d_item_id_t id
)
{
if(id.collection.data == NULL)
{
rodeo_log(
rodeo_logLevel_warning,
"Attempted to find collision item that doesn't belong to a collection. It also may not exist at all"
);
return (rodeo_collision_2d_item_t){0};
}
else if(id.self_handle == NULL || *id.self_handle == NULL)
{
rodeo_log(
rodeo_logLevel_warning,
"Attempted to find collision item that doesn't exist anymore"
);
return (rodeo_collision_2d_item_t){0};
}
return (rodeo_collision_2d_item_t){.data_handle = id.self_handle};
}
void
rodeo_collision_2d_collection_compare_self(
rodeo_collision_2d_collection_t collection,
rodeo_collision_2d_resolver_f resolver
)
{
c_foreach(i, cvec_collision_2d_item_data, collection.data->collection) {
c_foreach(
j,
cvec_collision_2d_item_data,
cvec_collision_2d_item_data_advance(i, 1),
cvec_collision_2d_item_data_end(&collection.data->collection)
)
{
if (irodeo_collision_2d_detect(*i.ref, *j.ref)) {
resolver(i.ref, j.ref);
}
}
}
}
void
rodeo_collision_2d_collection_compare_other(
rodeo_collision_2d_collection_t collection_a,
rodeo_collision_2d_collection_t collection_b,
rodeo_collision_2d_resolver_f resolver
)
{
c_foreach(i, cvec_collision_2d_item_data, collection_a.data->collection) {
c_foreach(j, cvec_collision_2d_item_data, collection_b.data->collection) {
if (irodeo_collision_2d_detect(*i.ref, *j.ref)) {
resolver(i.ref, j.ref);
}
}
}
}
int32_t irodeo_collision_2d_item_data_cmp(
const rodeo_collision_2d_item_data_t* a,
const rodeo_collision_2d_item_data_t* b
)
{
if (a->id.self_handle == b->id.self_handle) {
return 0;
} else {
return a->id.self_handle > b->id.self_handle ? 1 : -1;
}
}
// from raylib GetCollisionRect
rodeo_rectangle_t
rodeo_collision_2d_get_collision_rect(
rodeo_rectangle_t a,
rodeo_rectangle_t b
)
{
rodeo_rectangle_t overlap = { 0 };
float left = (a.x > b.x)? a.x : b.x;
float right_a = a.x + a.width;
float right_b = b.x + b.width;
float right = (right_a < right_b)? right_a : right_b;
float top = (a.y > b.y)? a.y : b.y;
float bottom_a = a.y + a.height;
float bottom_b = b.y + b.height;
float bottom = (bottom_a < bottom_b)? bottom_a : bottom_b;
if ((left < right) && (top < bottom))
{
overlap.x = left;
overlap.y = top;
overlap.width = right - left;
overlap.height = bottom - top;
}
return overlap;
}
|
