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
|
//-----------------------------------------------------------------------------
// Name: common.cpp
// Developer: Wolfire Games LLC
// Description:
// License: Read below
//-----------------------------------------------------------------------------
//
// Copyright 2022 Wolfire Games LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//-----------------------------------------------------------------------------
#include "common.h"
#include <cstdarg>
#include <stdint.h>
void FormatString(char* buf, int buf_size, const char* fmt, ...) {
va_list args;
va_start(args, fmt);
VFormatString(buf, buf_size, fmt, args);
va_end(args);
}
//From http://www.cse.yorku.ca/~oz/hash.html
//djb2 hash function
int djb2_hash(unsigned char* str) {
uint32_t hash_val = 5381;
int c;
while ((c = *str++)) {
hash_val = ((hash_val << 5) + hash_val) + c; /* hash * 33 + c */
}
return *((int*)&hash_val);
}
//From http://www.cse.yorku.ca/~oz/hash.html
//djb2 hash function
int djb2_hash_len(unsigned char* str, int len) {
uint32_t hash_val = 5381;
for(int i=0; i<len; ++i) {
hash_val = ((hash_val << 5) + hash_val) + *str++; /* hash * 33 + c */
}
return *((int*)&hash_val);
}
float MoveTowards(float val, float target, float amount) {
float diff = val-target;
if(diff < 0.0f){
diff = -diff;
}
if(diff < amount) {
return target;
} else if(val > target) {
return val - amount;
} else {
return val + amount;
}
}
|