/**
 * Copyright (c) 2025 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#include "camera.h"
#include "display/render.h"

#include "world/overworld.h"

void cameraUIPush(void) {
  glPushMatrix();
  glLoadIdentity();
  glViewport(0, 0, RENDER_WIDTH, RENDER_HEIGHT);
  glOrtho(
    0.0f, (float_t)RENDER_WIDTH,
    (float_t)RENDER_HEIGHT, 0.0f,
    -1.0f, 1.0f
  );
}

void cameraUIPop(void) {
  glPopMatrix();
}

void cameraScreenPush(void) {
  glPushMatrix();
  glLoadIdentity();

  #if RENDER_USE_FRAMEBUFFER
    int32_t windowWidth, windowHeight;
    SDL_GetWindowSize(RENDER_WINDOW, &windowWidth, &windowHeight);
    
    glViewport(0, 0, windowWidth, windowHeight);
    glOrtho(
      0.0f, (float_t)windowWidth,
      (float_t)windowHeight, 0.0f,
      -1.0f, 1.0f
    );
  #else
    glOrtho(
      0.0f, (float_t)RENDER_WIDTH,
      (float_t)RENDER_HEIGHT, 0.0f,
      -1.0f, 1.0f
    );
  #endif
}

void cameraScreenPop(void) {
  glPopMatrix();
}

void cameraOverworldPush(void) {
  glPushMatrix();
  glLoadIdentity();
  glViewport(0, 0, RENDER_WIDTH, RENDER_HEIGHT);
  glOrtho(
    0.0f, (float_t)RENDER_WIDTH,
    (float_t)RENDER_HEIGHT, 0.0f,
    -1.0f, 1.0f
  );

  glTranslatef(
    -((float_t)OVERWORLD_CAMERA_X) + ((float_t)RENDER_WIDTH / 2.0f),
    -((float_t)OVERWORLD_CAMERA_Y) + ((float_t)RENDER_HEIGHT / 2.0f),
    0.0f
  );
}

void cameraOverworldPop(void) {
  glPopMatrix();
}