#include "common.h"
#include "input.h"
#include "display.h"
#include "time.h"
#include "asset.h"
#include "world.h"

extern u_long bsp_test[];

VECTOR cam_pos = { 2176, 1152, 272 };	// START
//VECTOR cam_pos = { 1920, -1408, 352 };	// E1M1
SVECTOR cam_rot = { 0, 0, 0 };
SVECTOR cam_dir = { 0, ONE, 0 };
u_short cam_leaf = 0;

world_t world;

u_short quake_clut;
u_short water_clut;

// BSP face rendering:
// - Gather vertex data from face start index + length
// - Store vertex data in scratchpad memory (should be plenty of space for one face)
// - Perform camera offset and re-scaling operations to fit vertex data in signed 16-bit fixed point vectors
//   - Note: may be possible to (ab)use 32-bit GTE registers & ops to do this calculation and downcast
// - Store rescaled vertex data in scratchpad memory

// Init function
void init(void)
{
	input_init();
	display_init();
	time_init();

	world_load(bsp_test, &world);

	// Upload texture atlas to VRAM
	ps1texture_t maptex;
	asset_loadTexture(world.atlases[0].timData, &maptex);
	quake_clut = getClut(maptex.crect.x, maptex.crect.y);
	water_clut = getClut(maptex.crect.x, maptex.crect.y + 1);
}

// Main function, program entrypoint
int main(int argc, const char *argv[])
{
	// Init stuff	
	init();
	
	// Main loop
	while(1)
	{
		input_process();

		display_start();
		display_setClearColor(world.worldSpawn->skyColor);

		u_short fps = time_getFrameRate();
		FntPrint(-1, "Time: %d, frame: %d, delta time: %3d, fps: %d.%02d\n", (time_getRealTime() * 1000) >> 12, time_getFrameNumber(), time_getDeltaTime(), fps >> 8, ((fps & 0xFF) * 100) >> 8);
		FntPrint(-1, "Camera pos: (%d, %d, %d) rot: (%d, %d, %d) leaf: %d\n", cam_pos.vx, cam_pos.vy, cam_pos.vz, cam_rot.vx, cam_rot.vy, cam_rot.vz, cam_leaf);

		// Draw stuff
		world_draw(&world);
	
		FntPrint(-1, "Polycount: %d\n", polyCount);
		FntFlush(-1);
		
		display_finish();
		
		time_tick();
	}
	
	return 0;
}