#include "raylib.h"

typedef struct {
    Vector2 knight_pos;
} GameState;

void Init(GameState *state);
// {
// }

void Draw(GameState *state);
// {
//     ClearBackground(RAYWHITE);
//     DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY);
// }

int main(void) {
    const int screen_width = 1600;
    const int screen_height = 1080;

    InitWindow(screen_width, screen_height, "raylib [core] example - basic window");

    int monitor = GetCurrentMonitor();
    int monitor_width = GetMonitorWidth(monitor);
    int monitor_height = GetMonitorHeight(monitor);
    SetWindowPosition(monitor_width / 2 - screen_width / 2,
                      monitor_height / 2 - screen_height / 2);

    SetTargetFPS(60);

    GameState state = {0};
    Camera2D cam = {0};

    // Vector2 offset;         // Camera offset (displacement from target)
    // Vector2 target;         // Camera target (rotation and zoom origin)
    // float rotation;         // Camera rotation in degrees
    cam.zoom = 1.0f;

    Texture2D ground = LoadTexture("assets/Terrain/Ground/Tilemap_Flat.png");
    Texture2D blue_knight_warrior =
        LoadTexture("assets/Factions/Knights/Troops/Warrior/Blue/Warrior_Blue.png");

    int framesCounter = 0;
    int knight_speed = 10.1f;
    while (!WindowShouldClose()) {
        framesCounter++;

        if (IsKeyDown(KEY_RIGHT) || IsKeyDown(KEY_D)) {
            state.knight_pos.x += knight_speed;
        }
        if (IsKeyDown(KEY_LEFT) || IsKeyDown(KEY_A)) {
            state.knight_pos.x -= knight_speed;
        }
        if (IsKeyDown(KEY_UP) || IsKeyDown(KEY_W)) {
            state.knight_pos.y -= knight_speed;
        }
        if (IsKeyDown(KEY_DOWN) || IsKeyDown(KEY_S)) {
            state.knight_pos.y += knight_speed;
        }

        BeginDrawing();
        {
            BeginMode2D(cam);
            {
                ClearBackground((Color){ 100, 149, 237, 255 });
                // Draw(&state);
                int size = 32;
                int topx = 300;
                int topy = 32;
                for (int col = 0; col < size; col++) {
                    for (int row = 0; row < size; row++) {
                        int atlas_col = 0;
                        int atlas_row = 0;
                        if (col == size - 1) {
                            atlas_col = 5;
                        } else if (col > 0) {
                            atlas_col = (col % 4) + 1;
                        }
                        if (row == size - 1) {
                            atlas_row = 5;
                        } else if (row > 0) {
                            atlas_row = (row % 4) + 1;
                        }
                        Vector2 pos = {32 * col + topx, 32 * row + topy};
                        Rectangle src_rect = {32 * atlas_col, 32 * atlas_row, 32, 32};
                        DrawTextureRec(ground, src_rect, pos, WHITE);
                    }
                }
                DrawTextureRec(blue_knight_warrior,
                               (Rectangle){0, 0, 1152 / 6, 1536 / 8},
                               state.knight_pos,
                               // (Vector2){100, 100},
                               WHITE);
            }
            EndMode2D();
        }
        EndDrawing();
    }

    UnloadTexture(ground);
    CloseWindow();
    return 0;
}