streaming_world/tests/regions.cpp

#include "../src/modules/stream/ui/region_tree.h"
#include "../src/modules/stream/ui/grid_misc.h"
#include "../src/modules/stream/world_editor.h"
#include "../src/modules/stream/ui/queries.h"
#include "../src/modules/stream/ui/building_layout_graph.h"
#include "imgui.h"
#include "imgui_impl_sdl2.h"
#include "imgui_impl_sdlrenderer2.h"
#include <SDL.h>
#include <SDL_opengl.h>

using graph_module = BuildingLayoutGraph::graph_module;

int main()
{
	int i;
	SDL_Window *window = NULL;
	SDL_Surface *screenSurface = NULL;
	SDL_Renderer *renderer;
	SDL_WindowFlags window_flags;
    	ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
	HashMap<String, Color> colors;
	make_random r(172);

	flecs::world ecs;
	ecs.component<WorldEditor::components::buildings_layout_grid_floor>();
	ecs.component<WorldEditor::components::buildings_layout_grid_cell>();
	flecs::log::set_level(1);
	flecs::entity graph_base_e = ecs.entity("graph");
	flecs::entity graph_e = ecs.entity("v1").child_of(graph_base_e);
	flecs::entity grid_base_e = ecs.entity("grid");
	flecs::entity grid_e = ecs.entity("v1").child_of(grid_base_e);
	flecs::entity grid_floor_e = ecs.entity("floor_0").child_of(grid_e);
	int grid_size = 27;
	grid_floor_e.set<WorldEditor::components::buildings_layout_grid_floor>({.grid_size = grid_size, .size_left = grid_size * grid_size});
	List<struct region> region_list;
	struct region region;
	region.region_et = graph_e.id();
	region.rect = RegionRect2i(1, 1, grid_size - 2, grid_size - 2);
	region.complete = true;
	region.can_grow = false;
	region.can_grow_square = false;
	struct region_tree regions;
	regions.region = region;
	regions.dump(grid_floor_e);
	flecs::entity zone1_e = ecs.entity("zone1").child_of(graph_e),
		zone2_e = ecs.entity("zone2").child_of(graph_e),
		zone3_e = ecs.entity("zone3").child_of(graph_e);
	struct region region_data[] = {
		{
			.parent = graph_e.id(),
			.region_et = zone1_e.id(),
			.rect = {4, 4, 1, 1},
			.remains_area = 140,
			.can_grow_square = true,
			.can_grow = true,
			.complete = false
		},
		{
			.parent = graph_e.id(),
			.region_et = zone2_e.id(),
			.rect = {4, 9, 1, 1},
			.remains_area = 80,
			.can_grow_square = true,
			.can_grow = true,
			.complete = false},
		{
			.parent = graph_e.id(),
			.region_et = zone3_e.id(),
			.rect = {20, 15, 1 ,1},
			.remains_area = 50,
			.can_grow_square = true,
			.can_grow = true,
			.complete = false
		}
	};
	for (i = 0; i < sizeof(region_data) / sizeof(region_data[0]); i++)
		region_list.push_back(region_data[i]);
	regions.split(region_list);
	regions.dump(grid_floor_e);
	regions.grow();
	regions.dump(grid_floor_e);
	regions.place(grid_floor_e);
	if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) < 0)
		goto out;

#ifdef SDL_HINT_IME_SHOW_UI
	SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
#endif
	window_flags = (SDL_WindowFlags)(SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);

	window = SDL_CreateWindow("RegionTest", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 1024, window_flags);
	if (window == NULL)
		goto out;
	renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_ACCELERATED);
	if (!renderer)
		goto out;
	// screenSurface = SDL_GetWindowSurface(window);
	// if (!screenSurface)
	//	goto out;
	IMGUI_CHECKVERSION();
	ImGui::CreateContext();
	{
		ImGuiIO& io = ImGui::GetIO(); (void)io;
		io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
		io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
	}

	// Setup Dear ImGui style
	ImGui::StyleColorsDark();
	//ImGui::StyleColorsLight();

	// Setup Platform/Renderer backends
	ImGui_ImplSDL2_InitForSDLRenderer(window, renderer);
	ImGui_ImplSDLRenderer2_Init(renderer);
	// SDL_FillRect(screenSurface, NULL, SDL_MapRGB(screenSurface->format, 0xFF, 0xFF, 0xFF));
	// SDL_UpdateWindowSurface(window);
	SDL_Event event;
	while(1) {
		SDL_PollEvent(&event);
            	ImGui_ImplSDL2_ProcessEvent(&event);
		switch(event.type) {
		case SDL_QUIT:
			goto shutdown;
			break;
		case SDL_WINDOWEVENT:
			if (event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
				goto shutdown;
			break;
		default:
			break;

		}
		ecs.progress();
		if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED) {
			SDL_Delay(10);
			continue;
		}
		ImGui_ImplSDLRenderer2_NewFrame();
		ImGui_ImplSDL2_NewFrame();
		ImGui::NewFrame();
		{
            		ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
            		ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            		ImGui::End();
		}
		ImGui::Render();
		{
			ImGuiIO& io = ImGui::GetIO(); (void)io;
			SDL_RenderSetScale(renderer, io.DisplayFramebufferScale.x, io.DisplayFramebufferScale.y);
		}
		SDL_SetRenderDrawColor(renderer, (Uint8)(clear_color.x * 255), (Uint8)(clear_color.y * 255), (Uint8)(clear_color.z * 255), (Uint8)(clear_color.w * 255));
		SDL_RenderClear(renderer);
		ecs.query_builder<const WorldEditor::components::buildings_layout_grid_cell>()
			.build().each([grid_size, renderer, &colors, &r](flecs::entity e, const WorldEditor::components::buildings_layout_grid_cell &cell)
		{
//			flecs::log::warn("cell: %s: %s: %d", e.path().c_str(), cell.type.ascii().ptr(), cell.index);
			int x = cell.index % grid_size;
			int y = cell.index / grid_size;
			int px = 1280 * x / grid_size;
			int py = 1024 * y / grid_size;
			int w = 1280 / grid_size;
			int h = 1024 / grid_size;
//			flecs::log::warn("position: %d %d", x, y);
			if (!colors.has(cell.type))
				colors[cell.type] = Color((float)(r.get() % 256) / 256.0f, (float)(r.get() % 256) / 256.0f, (float)(r.get() % 256) / 256.0f, 1.0f);
			const Color &c = colors[cell.type];
			SDL_SetRenderDrawColor(renderer, (uint8_t)(c.r * 255), (uint8_t)(c.g * 255), (uint8_t)(c.b * 255), 255);
			SDL_Rect rect = {px, py, w, h};
			SDL_RenderFillRect(renderer, &rect);
			SDL_SetRenderDrawColor(renderer, 255, 15, 15, 255);
			SDL_RenderDrawRect(renderer, &rect);
		});
		ImGui_ImplSDLRenderer2_RenderDrawData(ImGui::GetDrawData(), renderer);
		SDL_RenderPresent(renderer);
	}
shutdown:
	ImGui_ImplSDLRenderer2_Shutdown();
	ImGui_ImplSDL2_Shutdown();
	ImGui::DestroyContext();

	SDL_DestroyRenderer(renderer);
	SDL_DestroyWindow(window);
	SDL_Quit();
out:
	return 0;
}