#include "asset.h"
#include "config.h"
#include "maths.h"
#include "memory.h"
#include "plat.h"
#include "player.h"
#include "render.h"
#include "services.h"
#include "tile.h"

#include <stdio.h>

void draw_spinny(Renderer* r, Colour c) {
	static int a = 0;
	int y; int x = y = 100 << fbits;
	x -= sin_table[a & sin_table_mask] * 10;
	y += cos_table[a & sin_table_mask] * 10;
	ren_point(r, c, x >> fbits, y >> fbits);
	a += 20;
}

void draw_monkey(Renderer* r) {
	static int a = 0;
	const Mesh* m = get_mesh(asset_id_monkey);
	Bitmap tex = { (Colour*)tile_pixels, 16, 16 };
	int p[] = { 0, 0, 0, f1 };
	mtx_push_trans(p);
	/*mtx_push_rot_x(a);
	mtx_push_rot_y(a);
	mtx_push_rot_z(a);*/
	ren_mesh(r, m, &tex);
	mtx_popn(1);
	a++;
}

void draw_tri(Renderer* r, int x, int y) {
	Bitmap t = { (Colour*)tile_pixels, 16, 16 };
	int v0[] = { 100, 100, 0, 0,  0,    f1, 0,  0  };
	int v1[] = { 200, 200, 0, f1, f1/2, 0,  f1, 0  };
	int v2[] = { 150, 300, 0, 0,  f1,   0,  0,  f1 };
	v1[0] = x;
	v1[1] = y;
	ren_tri(r, v0, v1, v2, &t);
}

int entrypoint(int argc, const char** argv, Arena* a) {
	App* app;
	Renderer r = { 0 };
	Heap h;
	FPS f;
	char buf[32];
	int* depth = 0;
	Arena preload;
	Colour blue = make_aliceblue();
	Player p;
	Services s;
	(void)argc;
	(void)argv;
	init_maths();
	init_heap(
		&h,
		arena_alloc(a, app_memory_size),
		app_memory_size
	);
	init_arena(
		&preload,
		arena_alloc(a, asset_preload_memory_size),
		asset_preload_memory_size
	);
	app = new_app(&h, 640, 480, "3D Engine");
	if (!app) return app->err;
	init_fps(&f, 20);
	depth = heap_alloc(&h, max_vp_w * max_vp_h * sizeof *depth);
	if (!depth) {
		print_err("Out of memory.\n");
		return error_out_of_memory;
	}
	preload_assets(&preload);
	s.a = app;
	s.r = &r;
	cfg_mouse(app, 0);
	init_player(&p);
	while (app->o) {
		fps_begin(&f);
		while (f.now >= f.next) {
			app_begin(app);
			update_player(&p, &s);
			ren_begin(&r, app->fb, depth, app->w, app->h);
				ren_clear(&r);
				ren_cleard(&r, f1 * 300);
				sprintf(buf, "FPS: %d", app->fps);
				ren_texts(&r, blue, 3, 3,  buf);
				sprintf(buf, "CAP: %d", f.fps);
				ren_texts(&r, blue, 3, 8,  buf);
				sprintf(buf, "MOUSE: %d, %d", app->mx, app->my);
				ren_texts(&r, blue, 3, 13, buf);
				push_player_cam(&p);
				draw_monkey(&r);
				pop_player_cam();
				/*draw_tri(&r, app->mx, app->my);*/
			ren_end(&r);
			app_end(app);
			fps_update(&f);
		}
		fps_end(&f);
	}
	deinit_app(app);
	return 0;
}