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
|
#include "main.h"
#include "input.h"
#include "loader.h"
#include "tilemap.h"
#include <stdbool.h>
#define from_fixed(a) (a / 16)
#define to_fixed(a) (a * 16)
enum {
PLAYER_IDLE,
PLAYER_JUMP,
PLAYER_FALL,
};
#define SIZE 8
#define ACCELERATION 1
#define FRICTION 2
#define MAX_SPEED 12
#define GRAVITY 1
static int move(struct entity *self) {
int dx = (input_right(input_now) - input_left(input_now)) * ACCELERATION;
self->velocity.x += dx;
if (dx == 0) {
if (self->velocity.x < -FRICTION) {
self->velocity.x += FRICTION;
} else if (self->velocity.x > FRICTION) {
self->velocity.x -= FRICTION;
} else {
self->velocity.x = 0;
}
}
if (self->velocity.x > MAX_SPEED) {
self->velocity.x = MAX_SPEED;
} else if (self->velocity.x < -MAX_SPEED) {
self->velocity.x = -MAX_SPEED;
}
self->x += self->velocity.x;
if (collision_solid(tilemap_area(tilemap, from_fixed(self->x), from_fixed(self->y), from_fixed(self->x) + SIZE, from_fixed(self->y) + SIZE))) {
if (self->velocity.x < 0) {
self->x += to_fixed(8) - ((self->x) % to_fixed(8)); // left
} else if (self->velocity.x == 0) {
//fputs("what?\n", stderr);
} else {
self->x -= ((self->x + to_fixed(SIZE)) % to_fixed(8)); // right
}
self->velocity.x = 0;
}
self->velocity.y += GRAVITY;
self->y += self->velocity.y;
//self->y += (input_down(input_now) - input_up(input_now)) * 8;
if (collision_solid(tilemap_area(tilemap, from_fixed(self->x), from_fixed(self->y), from_fixed(self->x) + SIZE, from_fixed(self->y) + SIZE))) {
if (self->velocity.y < 0) {
self->y += to_fixed(8) - ((self->y) % to_fixed(8)); // up
self->velocity.y = 0;
} else if (self->velocity.y == 0) {
//fputs("what?\n", stderr);
} else {
self->y -= ((self->y + to_fixed(SIZE)) % to_fixed(8)); // down
self->velocity.y = to_fixed(1); // crazy but it works
return true;
}
}
return false;
}
static int player_update(struct entity *self) {
switch (self->state) {
case PLAYER_IDLE:
if (move(self) == true) {
if (input_a(input_now)) {
self->velocity.y = -30;
self->state = PLAYER_JUMP;
}
} else {
self->state = PLAYER_FALL;
}
break;
case PLAYER_JUMP:
if (!input_a(input_now)) {
self->velocity.y /= 2;
self->state = PLAYER_FALL;
}
if (self->velocity.y > 0) {
self->state = PLAYER_FALL;
}
if (move(self) == true) {
self->state = PLAYER_IDLE;
}
break;
case PLAYER_FALL:
if (move(self) == true) {
self->state = PLAYER_IDLE;
}
break;
}
return 0;
}
static int player_hurt(struct entity *self, int damage) {
return 0;
}
static int player_draw(struct entity *self, int camX, int camY) {
SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
SDL_RenderCopy(renderer, self->texture, &(SDL_Rect) {0, 0, 16, 16}, &(SDL_Rect) {from_fixed(self->x) - camX - 4, from_fixed(self->y) - camY - 4, 16, 16});
return 0;
}
struct entity *player_new(void) {
player[0] = (struct entity) {
.update = player_update,
.hurt = player_hurt,
.draw = player_draw,
.x = 0, .y = 0,
.velocity = {.x = 0, .y = 0},
.hitbox = {
0, 0, 0, 0,
},
.state = PLAYER_IDLE,
.hp = 3,
.timer = 0,
.texture = NULL,
.ext = NULL,
};
player[0].texture = res_get_texture("fywi").data;
return player + 0;
}
int player_property(struct entity *const restrict self, char const *const restrict property, char const *const restrict value) {
if (strcmp(property, "x") == 0) {
self->x = to_fixed(atoi(value));
} else if (strcmp(property, "y") == 0) {
self->y = to_fixed(atoi(value));
} else {
return 1;
}
return 0;
}
|
