src/ui.cpp


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#include "ui.hpp"
#include "ogl.hpp"
#include "sandbox.hpp"

#include <imgui.h>

static void AddSand(Sandbox& sb) {
    for (int y = 80; y <= 90; ++y) {
        for (int x = 10; x <= 13; ++x) {
            sb.set_sand(x, y, Tile{ .so = Tile::SAND });
        }
    }
}

void ShowEverything() {
    ImGui::Begin("Sandbox");
    constexpr int kWidth = 40;
    constexpr int kHeight = 100;
    static bool running = false;
    static Sandbox sandbox(40, 100);
    static OglImage gl;
    sandbox.simulate_step();
    gl.upload(reinterpret_cast<const char*>(sandbox._bitmap.data()), kWidth, kHeight);

    if (ImGui::Button("Reset sandbox")) {
        sandbox = Sandbox(40, 100);
    }
    if (ImGui::Button("Add sand")) {
        AddSand(sandbox);
    }

    constexpr float kScale = 4.0f;
    constexpr ImVec2 kSize(kWidth * kScale, kHeight * kScale);
    ImGui::Image(gl.as_imgui(), kSize, ImVec2(0, 1), ImVec2(1, 0));
    ImGui::End();

    ImGui::ShowDemoWindow();
}