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

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

#include "watertowerclassic/LevelModel.h"
#include "watertowerclassic/PlayerModel.h"
#include <stdbool.h>

extern Vector2i touchedBlocks[];
extern unsigned int numberOfTouchedBlocks;

#define FALLING_BLOCK_UNSTEADY_FRAME_COUNT_MAX 50

bool isBlockSolid(struct LevelBlock * block, float waterLevel, unsigned int frameIndex);
bool isRegularBlockSolid(struct LevelBlock * block, float waterLevel, unsigned int frameIndex);
bool isSpongeBlockSolid(struct LevelBlock * block, float waterLevel);
bool isPhasingBlockSolid(struct LevelBlock * block, unsigned int frameIndex);
Vector2f getBlockPixelCenter(struct LevelBlock * block);
rect4f getBlockPixelRect(struct LevelBlock * block);
Vector2f getPowerupPixelCenter(struct LevelPowerup * powerup);
rect4f getPowerupPixelRect(struct LevelPowerup * powerup);
float pushBlock(LevelModel * levelModel, PlayerModel * playerModel, unsigned int frameIndex, struct LevelBlock * block, direction4 direction, float amount, bool peek);
short detectCollision(LevelModel * levelModel, PlayerModel * playerModel, unsigned int frameIndex, struct LevelBlock * srcBlock, char direction, float amount, struct LevelBlock ** blockList, short blockListLength, bool useSrcCenter, bool useDestCenter);
void carryBlocks(LevelModel * levelModel, PlayerModel * playerModel, unsigned int frameIndex, struct LevelBlock * srcBlock, char direction, float amount, char modifier);
bool rectCollision(rect4f * rect1, rect4f * rect2, char direction);
bool rectTouch(rect4f * rect1, rect4f * rect2, char direction);
void leaveBlock(struct LevelBlock * block);
void enterBlock(PlayerModel * playerModel, struct LevelBlock * block);
enum LevelBlockType touchBlock(PlayerModel * playerModel, struct LevelBlock * block);

#ifdef __cplusplus
}
#endif
#endif