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#include <raylib.h>
#include <raymath.h>
#include <math.h>
#include <stdio.h>
#include "utils.h"
#include "physics.h"
#include "player.h"
#define PLAYER_WIDTH 128
#define PLAYER_HEIGHT 128
#define COLLIDER_WIDTH 77
#define COLLIDER_HEIGHT 98
#define COLLIDER_XOFF 0
#define COLLIDER_YOFF 14
#define TOP_SPEEDX 100
#define TOP_SPEEDY 100
#define ACCEL_X 200
#define JUMP_SPEEDY 250
#define WALK_FRAME_TIME 0.2
extern Texture character_spritesheet;
void add_player_animations(struct entity* player);
void add_player(float xpos, float ypos) {
struct entity player = {
.flags = (ENTITY_ACTIVE | ENTITY_COLLISION_ACTIVE | ENTITY_VISIBLE | ENTITY_ANIMATED),
.type = Player_Entity,
.position = (Vector2) {xpos, ypos},
.texture = character_spritesheet,
.collider = (Rectangle) {
.x = -COLLIDER_WIDTH / 2 + COLLIDER_XOFF,
.y = -COLLIDER_HEIGHT / 2 + COLLIDER_YOFF,
.width = COLLIDER_WIDTH,
.height = COLLIDER_HEIGHT
},
.sprite_dest_rect = (Rectangle) {
.x = -PLAYER_WIDTH / 2,
.y = -PLAYER_HEIGHT / 2,
.width = PLAYER_WIDTH,
.height = PLAYER_HEIGHT
},
.player_state = Player_Idle,
.start_position = (Vector2) {xpos, ypos}
};
add_player_animations(&player);
add_entity(&player);
}
void player_accelerate(struct entity* player, float step) {
if (IsKeyDown(KEY_A)) {
player->velocity.x =
fmaxf(player->velocity.x - step, -TOP_SPEEDX);
} else if (IsKeyDown(KEY_D)) {
player->velocity.x =
fminf(player->velocity.x + step, TOP_SPEEDX);
} else if (fabsf(player->velocity.x) > 0) {
player->velocity.x = move_to(player->velocity.x, 0, step);
}
}
void handle_movement(struct entity* player, float dt) {
player_accelerate(player, ACCEL_X * dt * 0.5);
player->velocity.y += GRAVITY * 0.5 * dt;
move_and_collide(player, dt);
player_accelerate(player, ACCEL_X * dt * 0.5);
player->velocity.y += GRAVITY * 0.5 * dt;
}
void jump(struct entity* player) {
player->velocity.y = -JUMP_SPEEDY;
if (IsKeyDown(KEY_A) && player->velocity.x > 0)
player->velocity.x = 0;
else if (IsKeyDown(KEY_D) && player->velocity.x < 0)
player->velocity.x = 0;
}
void handle_input(struct entity* player) {
if (IsKeyPressed(KEY_SPACE) && player->player_state == Player_Idle) {
jump(player);
}
}
void reset_position(struct entity* player) {
player->position = player->start_position;
}
void handle_fall(struct entity* player) {
if (player->position.y > WINDOW_HEIGHT + 100)
reset_position(player);
}
void handle_flip(struct entity* player) {
if (IsKeyDown(KEY_A)) {
player->flip = true;
} else if (IsKeyDown(KEY_D)){
player->flip = false;
}
}
void update_player(struct entity* player, float dt) {
//Collision unsets it I didn't find a better way to do this
//with the current setup
player->player_state = Player_Air;
handle_movement(player, dt);
handle_input(player);
handle_fall(player);
handle_flip(player);
update_animation(&player->animations[player->current_animation], dt);
}
void player_handle_collision
(
struct entity* player,
struct entity* other,
enum direction collision_direction
) {
switch (other->type) {
case Wall_Entity:
if (collision_direction == Direction_Left || collision_direction == Direction_Right) {
player->velocity.x = 0.0;
} else if (collision_direction == Direction_Down || collision_direction == Direction_Up) {
player->velocity.y = 0.0;
}
if (collision_direction == Direction_Down) {
player->player_state = Player_Idle;
}
break;
default:
break;
}
}
void add_player_animations(struct entity* player) {
//Walking animation
player->animations[0] = (struct animation) {
.frame_count = 2,
.is_looping = true,
.source_rects = {
{.x = 0, .y = 129, .width = 128, .height = 128},
{.x = 129, .y = 129, .width = 128, .height = 128}
},
.frame_times = {WALK_FRAME_TIME, WALK_FRAME_TIME}
};
}
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