#include "cspt-state.h"
void updateInput(struct gameState * state, struct clientInput * message)
{
	if(message->clientNumber < 16 && message->clientNumber >= 0)
	{
		state->clients[message->clientNumber].leftAcceleration = message->left;
		state->clients[message->clientNumber].rightAcceleration = message->right;
		state->clients[message->clientNumber].upAcceleration = message->up;
		state->clients[message->clientNumber].downAcceleration = message->down;		
	}

}

void doGameTick(struct gameState * state)
{
	state->timestamp = time(NULL);
	for (int index = 0; index < 16; index++)
	{
		if (state->clients[index].registered == true)
		{
			// Calculate acceleration:
			if (state->clients[index].leftAcceleration)
			{
				state->clients[index].xVelocity -= 0.5;
			}
			if (state->clients[index].rightAcceleration)
			{
				state->clients[index].xVelocity += 0.5;
			}
			if (state->clients[index].upAcceleration)
			{
				state->clients[index].yVelocity += 0.5;
			}
			if (state->clients[index].downAcceleration)
			{
				state->clients[index].yVelocity += 0.5;
			}
			if (!state->clients[index].leftAcceleration && !state->clients[index].rightAcceleration)
			{
				state->clients[index].xVelocity *= 0.1;
			}
			if (!state->clients[index].upAcceleration && !state->clients[index].downAcceleration)
			{
				state->clients[index].yVelocity *= 0.1;
			}

			// Clamp speed:
			if (state->clients[index].xVelocity > 15)
			{
				state->clients[index].xVelocity = 15;
			}
			if (state->clients[index].xVelocity < -15)
			{
				state->clients[index].xVelocity = -15;
			}
			if (state->clients[index].yVelocity > 15)
			{
				state->clients[index].yVelocity = 15;
			}
			if (state->clients[index].yVelocity < -15)
			{
				state->clients[index].yVelocity = -15;
			}
			
			// Do movement:
			state->clients[index].xPosition += state->clients[index].xVelocity;
			state->clients[index].yPosition += state->clients[index].yVelocity;
		}
	}
}