townengine/apps/platformer/player.h

#ifndef PLAYER_H
#define PLAYER_H

#include "twn_game_api.h"


typedef struct World World;


typedef enum PlayerAction {
    PLAYER_ACTION_GROUND,
    PLAYER_ACTION_FALL,
    PLAYER_ACTION_JUMP,
} PlayerAction;


typedef struct Player {
    World *world;

    /* visual */
    float sprite_w;
    float sprite_h;

    /* body */
    Rect rect;

    /* state */
    PlayerAction action;

    /* physics */
    Rect collider_x;
    Rect collider_y;
    int collider_thickness;
    float dx;
    float dy;
    float max_dx;
    float run_horizontal_speed;
    float horizontal_damping;
    float current_gravity_multiplier;
    float terminal_velocity;

    /* jumping */
    float jump_force_initial;
    float jump_force_increase; /* aka "jump power", increment of dy per tick */
    int jump_air_ticks;
    int jump_air_timer;
    int jump_coyote_ticks;
    int jump_coyote_timer;
    int jump_buffer_ticks;
    int jump_buffer_timer;

    /* gravity multipliers */
    float jump_default_multiplier;
    float jump_boosted_multiplier;

    float jump_corner_correction_offset; /* from center */
} Player;


Player *player_create(World *world);
void player_destroy(Player *player);
void player_calc(Player *player);


#endif