RogueLife/src/player.c

#include "player.h"
#include "item.h"
#include <gint/defs/util.h>

static int xp_to_next_level(int level)
{
    return 3 * (level + 2) * (level + 2);
}

bool player_add_xp(entity_t *e, int points)
{
    player_data_t *p = getcomp(e, fighter)->player;

    bool leveled_up = false;
    p->xp_current += max(points, 0);

    while(p->xp_current >= p->xp_to_next_level) {
        p->xp_current -= p->xp_to_next_level;
        p->xp_level++;
        p->xp_to_next_level = xp_to_next_level(p->xp_level);
        leveled_up = true;
    }

    /* Recompute statistics */
    if(leveled_up) {
        fighter_t *f = getcomp(p->entity, fighter);
        int previous_HP_max = f->HP_max;

        fighter_stat_model_t stats = player_compute_stats(e, p->equipment);
        fighter_set_stats(getcomp(p->entity, fighter), &stats);
        f->HP += (f->HP_max - previous_HP_max);
    }

    return leveled_up;
}

fighter_stat_model_t player_compute_stats(entity_t *e, int *equips)
{
    player_data_t *p = getcomp(e, fighter)->player;

    fighter_stat_model_t m[4] = {
        p->stat_model,
        item_stat_model(equips[0]),
        item_stat_model(equips[1]),
        item_stat_model(equips[2]),
    };

    fighter_stat_model_t model = fighter_stat_model_add(4,
        m[0], m[1], m[2], m[3]);

    return fighter_stat_model_instantiate(&model, p->xp_level, fix(2.0));
}

bool player_give_item(entity_t *e, int item)
{
    player_data_t *p = getcomp(e, fighter)->player;

    for(int i = 0; i < 9; i++) {
        if(p->inventory[i] < 0) {
            p->inventory[i] = item;
            return true;
        }
    }

    return false;
}