#include "core.h"
#include "game.h"
#include "engine.h"

static float zoom = 2.0F;

static Texture2D unit_data [3];

void render_unit (int race,
                  int unit,
                  int x,
                  int y) {
	Rectangle source      = { 0, (unit - race * 18) * BASE_SIZE, BASE_SIZE, BASE_SIZE };
	Rectangle destination = { x, y, BASE_SIZE * zoom, BASE_SIZE * zoom };
	Vector2   origin      = { 0, 0 };

	DrawTexturePro (unit_data [race], source, destination, origin, 0.0F, WHITE);
}

static Texture2D icons;

void render_icon (int x,
                  int y,
                  int u,
                  int v,
                  int p,
                  int q) {
	DrawTextureRec (icons, (Rectangle) { x, y, u, v }, (Vector2) { p, q }, WHITE);
}

void render_text (char * text,
                  int    x,
                  int    y) {
	DrawText (text, x + 6, y + 6, FONT_SIZE, WHITE);
}

static Texture2D ashlands_data;

void render_map (void) {
	int x, y;

	for (x = 0; x < CHAD_WORLD_WIDTH; ++x) {
		for (y = 0; y < CHAD_WORLD_HEIGHT; ++y) {
			int index = chad_world [0] [x] [y];
			int catch = (y * y + x + x / (y + 1) + y / (x + 1)) % chad_block_change [index];

			Rectangle source      = { catch * BASE_SIZE, index * BASE_SIZE, BASE_SIZE, BASE_SIZE };
			Rectangle destination = { x * BASE_SIZE * zoom, y * BASE_SIZE * zoom, BASE_SIZE * zoom, BASE_SIZE * zoom };

			DrawTexturePro (ashlands_data, source, destination, (Vector2) { 0, 0 }, 0.0F, WHITE);
		}
	}
}

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

void engine_configure (void) {
	InitWindow   (1800, 900, "EAX");
	SetExitKey   (KEY_ESCAPE);
	SetTargetFPS (60);

	atexit (clean_up);

	icons = LoadTexture ("sprite/menu/menu.png");

	SetTextureFilter (icons, TEXTURE_FILTER_POINT);

	ashlands_data = LoadTexture ("sprite/world/ashlands.png");

	//~Texture2D vvv = LoadTexture ("sprite/orc/manor.png");

	unit_data [orc]   = LoadTexture ("sprite/orc/units.png");
	unit_data [human] = LoadTexture ("sprite/human/units.png");
	unit_data [elf]   = LoadTexture ("sprite/elf/units.png");
}