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
|
#include <SDL2/SDL.h>
#include <stdbool.h>
#include "pacman.h"
#include "collision.h"
#define PACMAN_SPEED 261
#define PACMAN_SIDE 40
SDL_Rect* get_colliding_tile_raw(SDL_Rect*, struct map* map);
SDL_Rect* get_colliding_tile(struct pacman* pacman, struct map* map);
void handle_pacman_input(const char* keyboard, struct pacman* pacman, struct map* map) {
SDL_Rect r = {
.x = pacman->xpos,
.y = pacman->ypos,
.w = PACMAN_SIDE,
.h = PACMAN_SIDE
};
if(keyboard[SDL_SCANCODE_UP]) {
r.y--;
if(get_colliding_tile_raw(&r, map) == NULL)
pacman->facing = FACING_UP;
} else if(keyboard[SDL_SCANCODE_DOWN]) {
r.y++;
if(get_colliding_tile_raw(&r, map) == NULL)
pacman->facing = FACING_DOWN;
} else if(keyboard[SDL_SCANCODE_LEFT]) {
r.x--;
if(get_colliding_tile_raw(&r, map) == NULL)
pacman->facing = FACING_LEFT;
} else if(keyboard[SDL_SCANCODE_RIGHT]) {
r.x++;
if(get_colliding_tile_raw(&r, map) == NULL)
pacman->facing = FACING_RIGHT;
}
}
void update_pacman(struct pacman* pacman, float dt, struct map* map) {
if(pacman->facing == FACING_UP) {
pacman->ypos -= PACMAN_SPEED * dt;
SDL_Rect* colliding_tile =
get_colliding_tile(pacman, map);
if(colliding_tile != NULL) {
pacman->ypos =
colliding_tile->y + colliding_tile->h;
} else {
update_animation(&pacman->animations[pacman->facing], dt);
}
} else if(pacman->facing == FACING_DOWN) {
pacman->ypos += PACMAN_SPEED * dt;
SDL_Rect* colliding_tile =
get_colliding_tile(pacman, map);
if(colliding_tile != NULL) {
pacman->ypos =
colliding_tile->y - PACMAN_SIDE;
} else {
update_animation(&pacman->animations[pacman->facing], dt);
}
} else if(pacman->facing == FACING_LEFT) {
pacman->xpos -= PACMAN_SPEED * dt;
SDL_Rect* colliding_tile =
get_colliding_tile(pacman, map);
if(colliding_tile != NULL) {
pacman->xpos =
colliding_tile->x + colliding_tile->w;
} else {
update_animation(&pacman->animations[pacman->facing], dt);
}
} else if(pacman->facing == FACING_RIGHT) {
pacman->xpos += PACMAN_SPEED * dt;
SDL_Rect* colliding_tile =
get_colliding_tile(pacman, map);
if(colliding_tile != NULL) {
pacman->xpos =
colliding_tile->x - PACMAN_SIDE;
} else {
update_animation(&pacman->animations[pacman->facing], dt);
}
}
}
void draw_pacman(struct demo* demo, const struct pacman* pacman) {
const struct animation* current_animation =
&pacman->animations[pacman->facing];
SDL_Rect d_rect = {
.x = pacman->xpos,
.y = pacman->ypos,
.w = PACMAN_SIDE,
.h = PACMAN_SIDE
};
draw_animation(demo, current_animation, &d_rect);
}
SDL_Rect* get_colliding_tile(struct pacman* pacman, struct map* map) {
SDL_Rect r = (SDL_Rect){
.x = pacman->xpos,
.y = pacman->ypos,
.w = PACMAN_SIDE,
.h = PACMAN_SIDE
};
return get_colliding_tile_raw(&r, map);
}
SDL_Rect* get_colliding_tile_raw(SDL_Rect* r, struct map* map) {
for(int i = 0; i < map->collider_count; i++) {
if(is_colliding(r, &map->colliders[i])) {
return &map->colliders[i];
}
}
return NULL;
}
|
