#include "world.h"
#include "tile.h"

#define min(x,y) (x>y?y:x)
#define max(x,y) (x<y?y:x)

static world global = {0};

world_t world_get(int x, int y)
{
    if (0<=x && x<=W_SIZE_X && 0<=y && y<=W_SIZE_Y)
        return global[x][y];
    else
    {
        world_t cell = {W_DEATH,0,0};
        return cell;
    }
}

void display_cell(int cx, int cy, int sx, int sy)
{
    world_t cell=world_get(cx,cy);
    if (cell.type==W_TUYAU)
        tuyau_draw(cell.state, sx, sy);
}

void world_draw(int x, int y)
{
    int c_top, c_left;
    int s_top, s_left;

    c_left = max(0, x/8-8);
    c_top = max(0, y/8-4);

    s_left = (x+1)%8 - 8;
    s_top = (y+1)%8 - 8;
    for (int t=s_left, cx=c_left; t<128; t+=8, cx++)
        for (int u=s_top, cy=c_top; u<64; u+=8, cy++)
            display_cell(cx,cy, t,u);

}