unnamed-platformer/src/draw.c

#include <gint/display.h>

#define PLAYER_SIDES 5
#define BG_COLOR 0
#define LEVEL_WIDTH 28
#define DRAW_OFFSET_Y -24
#define DRAW_OFFSET_X -27

extern image_t img_player; //player texture, 12x12

void draw_player(int old_x, int old_y, int x, int y)
{
  if (old_x != x || old_y != y)
  {
    drect(old_x * 2 + DRAW_OFFSET_X, old_y * 2 + DRAW_OFFSET_Y,
      (old_x + PLAYER_SIDES) * 2 + 1 + DRAW_OFFSET_X,
      (old_y + PLAYER_SIDES) * 2 + 1 + DRAW_OFFSET_Y, BG_COLOR);
    dimage(x * 2 + DRAW_OFFSET_X, y * 2 + DRAW_OFFSET_Y, &img_player);
  }
}

void draw_level(char level[])
{
  dclear(BG_COLOR);
  extern image_t img_ground; //ground texture, 16x16
  extern image_t img_spike; //spike texture, 16x16
  extern image_t img_elevator; //elevator texture, 16x16
  unsigned int i = 0;
  unsigned int x = 0;
  unsigned int y = 0;
  while (i != LEVEL_WIDTH*17)
  {
    switch (level[i])
    {
      case '0':
        dimage(x * 2 + DRAW_OFFSET_X, y * 2 + DRAW_OFFSET_Y, &img_ground);
        break;
      case 'v':
        dimage(x * 2 + DRAW_OFFSET_X, y * 2 + DRAW_OFFSET_Y, &img_spike);
        break;
      case '^':
        dimage(x * 2 + DRAW_OFFSET_X, y * 2 + DRAW_OFFSET_Y, &img_elevator);
        break;
    }
    x += 8;
    if (x == 8*LEVEL_WIDTH)
    {
      x = 0;
      y += 8;
    }
    i++;
  }
}