// Copyright (c) 2014 Alex Diener. All rights reserved.

#ifndef __SharedDefinitions_H__
#define __SharedDefinitions_H__
#ifdef __cplusplus
extern "C" {
#endif

#include "gamemath/Vector2i.h"
#include "gamemath/Vector2f.h"
#include <stdbool.h>

#define FRAMES_PER_SECOND 60
#define FRAME_INTERVAL (1.0 / FRAMES_PER_SECOND)

#define MENU_COLOR_ENABLED        COLOR4f(0.0f, 0.0f, 0.0f, 1.0f)
#define MENU_COLOR_DISABLED       COLOR4f(0.5f, 0.5f, 0.5f, 0.5f)
#define MENU_COLOR_HIGHLIGHTED    COLOR4f(0.25f, 0.25f, 1.0f, 1.0f)
#define MENU_COLOR_SELECTED       COLOR4f(1.0f, 0.0f, 0.0f, 1.0f)
#define MENU_COLOR_NONINTERACTIVE COLOR4f(0.0f, 0.0f, 0.0f, 1.0f)
#define MENU_COLOR_ERROR          COLOR4f(1.0f, 0.0f, 0.0f, 1.0f)

typedef short fixed8_8;

typedef enum direction4 {
	DIRECTION_LEFT = 0,
	DIRECTION_RIGHT = 1,
	DIRECTION_UP = 2,
	DIRECTION_DOWN = 3
} direction4;

struct rect4f {
	float left;
	float right;
	float top;
	float bottom;
};
typedef struct rect4f rect4f;

#define RECT4f(left, right, top, bottom) ((rect4f) {left, right, top, bottom})

struct blockRef {
  Vector2i tilePosition;
  struct blockRef * nextBlock;
};
typedef struct blockRef blockRef;

static inline direction4 direction4_opposite(direction4 direction) {
	switch (direction) {
		case DIRECTION_LEFT:
			return DIRECTION_RIGHT;
			
		case DIRECTION_RIGHT:
			return DIRECTION_LEFT;
			
		case DIRECTION_DOWN:
			return DIRECTION_UP;
			
		case DIRECTION_UP:
			return DIRECTION_DOWN;
			
		default:
			return -1;
	}
}

static inline bool rectsIntersect(rect4f lhs, rect4f rhs) {
	return lhs.left < rhs.right && lhs.right > rhs.left && lhs.top < rhs.bottom && lhs.bottom > rhs.top;
}

#ifdef __cplusplus
}
#endif
#endif