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#include "camera.h"
#include "cfg.h"
#include "clamp.h"
#include "map.h"
#include <math.h>
#include <stdlib.h>
static double cam[2] = {0, 0};
static double off[2] = {0, 0};
int flip_offset_x;
int flip_offset_y;
void
camera_init(void)
{
cam[0] = 0.0;
cam[1] = 0.0;
}
void
camera_teleport(int x, int y)
{
cam[0] = x;
cam[1] = y;
}
void
camera_update(double dest[2])
{
for (int i = 0; i < 2; i++)
cam[i] += 0.1 * (dest[i] - cam[i]);
cam[0] = clamp(DWIDTH/2.0, map_width() * TSIZE - DWIDTH/2.0, cam[0]);
cam[1] = clamp(DHEIGHT/2.0, map_height() * TSIZE - DHEIGHT/2.0, cam[1]);
flip_offset_x += rand() % 15 - 8;
flip_offset_y += rand() % 15 - 8;
}
int
camera_x(double scale)
{
return -cam[0] * scale + DWIDTH / 2.0 + off[0] - 2 + rand() % 5;
}
int
camera_y(double scale)
{
return -cam[1] * scale + DHEIGHT / 2.0 + off[1] - 2 + rand() % 5;
}
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