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
|
#include <base/math.hpp>
#include <engine/e_client_interface.h>
#include <game/generated/g_protocol.hpp>
#include <game/generated/gc_data.hpp>
#include "animstate.hpp"
static void anim_seq_eval(ANIM_SEQUENCE *seq, float time, ANIM_KEYFRAME *frame)
{
if(seq->num_frames == 0)
{
frame->time = 0;
frame->x = 0;
frame->y = 0;
frame->angle = 0;
}
else if(seq->num_frames == 1)
{
*frame = seq->frames[0];
}
else
{
//time = max(0.0f, min(1.0f, time / duration)); // TODO: use clamp
ANIM_KEYFRAME *frame1 = 0;
ANIM_KEYFRAME *frame2 = 0;
float blend = 0.0f;
// TODO: make this smarter.. binary search
for (int i = 1; i < seq->num_frames; i++)
{
if (seq->frames[i-1].time <= time && seq->frames[i].time >= time)
{
frame1 = &seq->frames[i-1];
frame2 = &seq->frames[i];
blend = (time - frame1->time) / (frame2->time - frame1->time);
break;
}
}
if (frame1 && frame2)
{
frame->time = time;
frame->x = mix(frame1->x, frame2->x, blend);
frame->y = mix(frame1->y, frame2->y, blend);
frame->angle = mix(frame1->angle, frame2->angle, blend);
}
}
}
static void anim_add_keyframe(ANIM_KEYFRAME *seq, ANIM_KEYFRAME *added, float amount)
{
seq->x += added->x*amount;
seq->y += added->y*amount;
seq->angle += added->angle*amount;
}
static void anim_add(ANIMSTATE *state, ANIMSTATE *added, float amount)
{
anim_add_keyframe(&state->body, &added->body, amount);
anim_add_keyframe(&state->back_foot, &added->back_foot, amount);
anim_add_keyframe(&state->front_foot, &added->front_foot, amount);
anim_add_keyframe(&state->attach, &added->attach, amount);
}
void ANIMSTATE::set(ANIMATION *anim, float time)
{
anim_seq_eval(&anim->body, time, &body);
anim_seq_eval(&anim->back_foot, time, &back_foot);
anim_seq_eval(&anim->front_foot, time, &front_foot);
anim_seq_eval(&anim->attach, time, &attach);
}
void ANIMSTATE::add(ANIMATION *anim, float time, float amount)
{
ANIMSTATE add;
add.set(anim, time);
anim_add(this, &add, amount);
}
ANIMSTATE *ANIMSTATE::get_idle()
{
static ANIMSTATE state;
static bool init = true;
if(init)
{
state.set(&data->animations[ANIM_BASE], 0);
state.add(&data->animations[ANIM_IDLE], 0, 1.0f);
init = false;
}
return &state;
}
|