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#include "main.h"
#include "entity.h"
#include "loader.h"
#include "input.h"
#include "tilemap.h"
#include <stdbool.h>
#define SIZE 4
#define ACCELERATION 1
#define FRICTION 2
#define MAX_SPEED 12
#define GRAVITY 1
#define JUMP 30
enum {
PLAYER_NONE,
PLAYER_IDLE,
PLAYER_WALK,
PLAYER_JUMP,
PLAYER_FALL,
};
enum {
PLAYER_A_IDLE,
PLAYER_A_IDLE2,
PLAYER_A_WALK,
PLAYER_A_WALK2,
PLAYER_A_WALK3,
PLAYER_A_WALK4,
PLAYER_A_JUMP,
PLAYER_A_FALL,
PLAYER_A_FALL2,
};
struct anim player_anims[] = {
{PLAYER_A_IDLE2, {0, 0, 16, 16}, 300},
{PLAYER_A_IDLE, {0, 32, 16, 16}, 2},
{PLAYER_A_WALK2, {0, 0, 16, 16}, 6},
{PLAYER_A_WALK3, {16, 0, 16, 16}, 6},
{PLAYER_A_WALK4, {32, 0, 16, 16}, 6},
{PLAYER_A_WALK, {48, 0, 16, 16}, 6},
{PLAYER_A_JUMP, {16, 0, 16, 16}, 300},
{PLAYER_A_FALL2, {32, 0, 16, 16}, 15},
{PLAYER_A_FALL2, {48, 0, 16, 16}, 15},
};
static collision_T collide(struct entity *self) {
return tilemap_area(tilemap, from_fixed(self->x) - SIZE / 2, from_fixed(self->y) - SIZE, from_fixed(self->x) + SIZE / 2, from_fixed(self->y));
}
static int move(struct entity *self) {
int on_ground = false;
int dx = (input_right(input_now) - input_left(input_now)) * ACCELERATION;
self->velocity.x += dx;
// deaccel
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;
}
}
// speed cap
if (self->velocity.x > MAX_SPEED) {
self->velocity.x = MAX_SPEED;
} else if (self->velocity.x < -MAX_SPEED) {
self->velocity.x = -MAX_SPEED;
}
// x collision
self->x += self->velocity.x;
collision_T const cx = collide(self);
if (collision_solid(cx)) {
if (self->velocity.x < 0) {
self->x += to_fixed(8) - ((self->x - to_fixed(SIZE / 2)) % to_fixed(8)); // left
} else if (self->velocity.x == 0) {
//fputs("what?\n", stderr);
} else {
self->x -= ((self->x + to_fixed(SIZE / 2)) % to_fixed(8)); // right
}
self->velocity.x = 0;
}
if (self->velocity.x < 0) {
self->facing = -1;
} else if (self->velocity.x > 0) {
self->facing = +1;
}
self->velocity.y += GRAVITY;
// y collision
self->y += self->velocity.y;
collision_T const cy = collide(self);
if (collision_solid(cy)) {
if (self->velocity.y < 0) {
self->y += to_fixed(8) - ((self->y - to_fixed(SIZE)) % 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(8)); // down
self->velocity.y = to_fixed(1); // crazy but it works
on_ground = true;
}
}
if (collision_hazard(cx | cy)) {
self->hurt(self, 1);
}
self->hitbox.left = from_fixed(self->x) - SIZE / 2;
self->hitbox.right = from_fixed(self->x) + SIZE / 2;
self->hitbox.top = from_fixed(self->y) - SIZE;
self->hitbox.bottom = from_fixed(self->y);
return on_ground;
}
static void anim(struct entity *self, unsigned anim) {
self->anim = player_anims[anim];
}
static int player_update(struct entity *self) {
if (self->hp <= 0) {
self->state = 0;
return 1;
}
switch (self->state) {
case PLAYER_IDLE:
if (move(self) == false) {
self->velocity.y = 0;
anim(self, PLAYER_A_FALL);
self->state = PLAYER_FALL;
}
if (input_right(input_now) - input_left(input_now)) {
anim(self, PLAYER_A_WALK);
self->state = PLAYER_WALK;
}
if (input_a(input_now)) {
self->velocity.y = -JUMP;
anim(self, PLAYER_A_JUMP);
self->state = PLAYER_JUMP;
}
break;
case PLAYER_WALK:
if (move(self) == false) {
self->velocity.y = 0;
anim(self, PLAYER_A_FALL);
self->state = PLAYER_FALL;
}
if (!(input_right(input_now) - input_left(input_now))) {
anim(self, PLAYER_A_IDLE);
self->state = PLAYER_IDLE;
}
if (input_a(input_now)) {
self->velocity.y = -JUMP;
anim(self, PLAYER_A_JUMP);
self->state = PLAYER_JUMP;
}
break;
case PLAYER_JUMP:
if (!input_a(input_now)) {
self->velocity.y /= 2;
anim(self, PLAYER_A_FALL);
self->state = PLAYER_FALL;
}
if (self->velocity.y > 0) {
anim(self, PLAYER_A_FALL);
self->state = PLAYER_FALL;
}
if (move(self) == true) {
anim(self, PLAYER_A_IDLE);
self->state = PLAYER_IDLE;
}
break;
case PLAYER_FALL:
if (move(self) == true) {
anim(self, PLAYER_A_IDLE);
self->state = PLAYER_IDLE;
}
break;
}
if (self->iframes > 0) {
self->iframes--;
}
self->anim.length--;
if (self->anim.length == 0) {
anim(self, self->anim.frame);
}
return 0;
}
static int player_hurt(struct entity *self, int damage) {
if (self->iframes == 0) {
self->hp -= damage;
self->iframes = 60;
}
return 0;
}
static int player_draw(struct entity *self, int camX, int camY) {
if (!(self->iframes & 0x4)) {
SDL_Rect rect = self->anim.rect;
if (self->facing == -1) {
rect.y += 16;
}
SDL_RenderCopy(renderer, self->texture, &rect, &(SDL_Rect) {from_fixed(self->x) - camX - 8, from_fixed(self->y) - camY - 12, 16, 16});
}
return 0;
}
struct entity *player_new(struct entities *entities) {
entities->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,
.facing = 1,
.iframes = 0,
.texture = NULL,
.ext = NULL,
};
anim(entities->player, PLAYER_A_IDLE);
entities->player[0].texture = res_get_texture("fywi").data;
return entities->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;
}
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