#include "render.h"
#include "engine.h"

#include <stdlib.h>
#include <raylib.h>

float render_zoom = 2.0;

static Texture2D render_texture [render_texture_count];

static Font    font = { 0 };
static Color   tint = { 255, 255, 255, 255 };
static Vector2 dump = { 0, 0 };

static void render_clean_up (void) {
	CloseWindow ();
}

int render_width  (void) { return (GetScreenWidth  ()); }
int render_height (void) { return (GetScreenHeight ()); }

static void limit (int * pointer, int minimum, int maximum) {
	if (* pointer < minimum) { * pointer = minimum; }
	if (* pointer > maximum) { * pointer = maximum; }
}

void render_sprite (int sprite, int x, int y, int u, int v, int width, int height) {
	Rectangle source, destination;

	source.x      = u;
	source.y      = v;
	source.width  = width;
	source.height = height;

	destination.x      = x;
	destination.y      = y;
	destination.width  = width  * ((sprite <= overui) ? 1 : render_zoom);
	destination.height = height * ((sprite <= overui) ? 1 : render_zoom);

	DrawTexturePro (render_texture [sprite], source, destination, dump, 0.0, tint);
}

void render_string (char * string, int x, int y) {
	Vector2 position = { 4, 4 };

	position.x += x;
	position.y += y;

	DrawTextPro (font, string, position, dump, 0.0, FONT_SIZE, 4, tint);
}

int render_active = 0;

static void render_exit (void) {
	render_active = 0;
}

static void (* render_action [80]) (void);

void render_configure (void) {
	render_active = 1;

	InitWindow   (1800, 900, "EAX");
	SetTargetFPS (60);

	font = LoadFont ("sprite/gothic.ttf");

	atexit (render_clean_up);

	render_action [0] = render_exit;

	render_texture [neonui] = LoadTexture ("sprite/neonui.png");
	render_texture [ui]     = LoadTexture ("sprite/ui.png");
	render_texture [overui] = LoadTexture ("sprite/hack.png");

	SetTextureFilter (render_texture [neonui], TEXTURE_FILTER_POINT);
	SetTextureFilter (render_texture [ui],     TEXTURE_FILTER_POINT);
	SetTextureFilter (render_texture [overui], TEXTURE_FILTER_POINT);

	render_texture [orcs]      = LoadTexture ("sprite/orcs.png"); /* TODO */
	render_texture [humans]    = LoadTexture ("sprite/humans.png");
	render_texture [elves]     = LoadTexture ("sprite/elves.png");
	render_texture [ashlands]  = LoadTexture ("sprite/ashlands.png");
}

void render_synchronize (void) {
	Color background = { 0, 0, 0, 0 };

	if (IsKeyPressed (KEY_RIGHT)) { camera_x++; limit (& camera_x, 0, world_width  - (render_width  () / (int) (BASE_SIZE * render_zoom))); }
	if (IsKeyPressed (KEY_LEFT))  { camera_x--; limit (& camera_x, 0, world_width  - (render_width  () / (int) (BASE_SIZE * render_zoom))); }
	if (IsKeyPressed (KEY_DOWN))  { camera_y++; limit (& camera_y, 0, world_height - (render_height () / (int) (BASE_SIZE * render_zoom))); }
	if (IsKeyPressed (KEY_UP))    { camera_y--; limit (& camera_y, 0, world_height - (render_height () / (int) (BASE_SIZE * render_zoom))); }

	if (IsKeyPressed (KEY_T)) { menu_show [menu_traits]    = menu_show [menu_traits]    ? 0 : 1; }
	if (IsKeyPressed (KEY_S)) { menu_show [menu_skills]    = menu_show [menu_skills]    ? 0 : 1; }
	if (IsKeyPressed (KEY_V)) { menu_show [menu_values]    = menu_show [menu_values]    ? 0 : 1; }
	if (IsKeyPressed (KEY_R)) { menu_show [menu_resources] = menu_show [menu_resources] ? 0 : 1; }

	if (WindowShouldClose ()) { render_active = 0; }

	/*if (IsKeyPressed (KEY_P)) { dump_world_screenshot (); }*/

	EndDrawing ();

	BeginDrawing ();

	ClearBackground (background);
}