Collab_RPG/src/player.c

#include "player.h"
#include "map.h"
#include <gint/display.h>

/* (Mibi88) TODO: Upscale the player for the CG50. */
#define P_WIDTH 8
#define P_HEIGHT 8

/* SPEED should NOT be 8 or bigger: it this may cause bugs when handling
 * collisions! */
#ifdef FXCG50
    #define SPEED   3
#else
    #define SPEED   1
#endif

const char one_px_mov[8] = {
    0, -1, /* Up */
    0, 1,  /* Down */
    -1, 0, /* Left */
    1, 0   /* Right */
};

/* TODO: Search for all hard tiles in the tileset. hard_tiles is a list of their
 * IDs */
#define HARD_TILES_AMOUNT 5
const short int hard_tiles[HARD_TILES_AMOUNT] = {
    MAP_OUTSIDE, 124, 148, 125, 149
};

extern bopti_image_t demo_player_img;

void player_draw(Player *player) {
    dimage(player->px-P_WIDTH/2, player->py-P_HEIGHT/2, &demo_player_img);
}

void player_move(Map *map_level, Player *player, Direction direction) {
    /* How this player movement will modify the player x and y. */
    const char dx = one_px_mov[direction*2]*SPEED;
    const char dy = one_px_mov[direction*2+1]*SPEED;
    if(player_collision(map_level, player, direction)){
        player_fix_position(player, dx, dy);
    }else{
        player->x += dx;
        player->y += dy;
    }
}

void player_action(Player *player) {
    /**/
}

bool player_collision(Map *map_level, Player *player, Direction direction) {
    /* What's the tile the player is going to. */
    short int i;
    const char dx = one_px_mov[direction*2];
    const char dy = one_px_mov[direction*2+1];
    int player_tile_x = player->x/T_WIDTH;
    int player_tile_y = player->x/T_WIDTH;
    for(i=0;i<map_level->nblayers;i++){
        if(is_in(hard_tiles, HARD_TILES_AMOUNT,
                 get_tile(map_level, player_tile_x+dx, player_tile_y+dy, i))){
            return true;
        }
    }
    return false;
}

void player_fix_position(Player *player, bool fix_x, bool fix_y) {
    if(fix_x) player->x = player->x/T_WIDTH*T_WIDTH;
    if(fix_y) player->y = player->y/T_HEIGHT*T_HEIGHT;
}