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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 });
}
}
}
constexpr int kWidth = 40;
constexpr int kHeight = 100;
constexpr float kScale = 4.0f;
constexpr ImVec2 kSize(kWidth* kScale, kHeight* kScale);
static ImVec2 TrSandbox2Screen(ImVec2 origin, Pt pt) {
return ImVec2(origin.x + kScale * pt.x, origin.y - kScale * pt.y);
}
struct ImRect {
ImVec2 top_left;
ImVec2 bottom_right;
};
// Assuming inclusive-inclusive rectangle
static ImRect TrSandbox2Screen(ImVec2 origin, Rect r) {
return {
ImVec2(origin.x + kScale * r.bl.x, origin.y - kScale * (r.tr.y+1)),
ImVec2(origin.x + kScale * (r.tr.x + 1), origin.y - kScale * r.bl.y),
};
}
void ShowEverything() {
ImGui::Begin("Sandbox");
static Sandbox sandbox(40, 100);
static OglImage gl;
static bool running = false;
ImGui::Checkbox("Run", &running);
static bool show_dirty_rect = true;
ImGui::Checkbox("Show dirty rects", &show_dirty_rect);
ImGui::Text("ncycle = %d", sandbox.ncycle);
ImGui::SameLine();
bool step = ImGui::Button("Step");
if (step || running) {
sandbox.simulate_step();
gl.upload(reinterpret_cast<const char*>(sandbox.bitmap), kWidth, kHeight);
}
// TODO this makes things very wrong (no proper assignment operator)
// if (ImGui::Button("Reset sandbox")) {
// sandbox = Sandbox(40, 100);
// }
// ImGui::SameLine();
if (ImGui::Button("Add sand")) {
AddSand(sandbox);
}
auto sandbox_topleft = ImGui::GetCursorScreenPos();
ImGui::Image(gl.as_imgui(), kSize, ImVec2(0, 1), ImVec2(1, 0));
// bottom-left corner of the sandbox, in screen space
auto origin = sandbox_topleft;
origin.y += kSize.y;
if (show_dirty_rect) {
auto dl = ImGui::GetWindowDrawList();
auto [top_left, bottom_right] = TrSandbox2Screen(origin, sandbox.dirty_writeto);
dl->AddRect(top_left, bottom_right, IM_COL32(255, 0, 0, 255));
}
ImGui::End();
ImGui::ShowDemoWindow();
}
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