/*広告*/

/*ＳＴＧの作り方　中間ソース３*/
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#include "DxLib.h"

#define LEFT_LIMIT -220
#define RIGHT_LIMIT 220
#define TOP_LIMIT 240
#define BOTTOM_LIMIT -240

void my_init_back_img(void);
void my_init_variable(void);
void my_init_player(void);

void my_move_back(void);
void my_move_player(void);

void my_to_center(void);

void my_draw_back(void);
void my_draw_player(void);
void my_draw_score_board(void);

void my_timer(void);

int my_get_key(void);

struct PLAYER{
	double x, y;
	double draw_x, draw_y;
	int speed;
	int shot_type;
	int bomb;
	int power;
	int life;
	double range;
};

struct PLAYER p1;

int key[256];

double back_img_y;
int back_img;

int gamecount;

int Color_White;
int Color_Gray;

int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int){
	ChangeWindowMode(TRUE);
	DxLib_Init();
	SetDrawScreen(DX_SCREEN_BACK);

	my_init_back_img();
	my_init_variable();
	my_init_player();

	while (ScreenFlip()==0 && ProcessMessage()==0
		 && ClearDrawScreen()==0 && my_get_key()==0){

		my_move_back();
		my_move_player();

		my_to_center();

		my_draw_back();
		my_draw_player();
		my_draw_score_board();

		my_timer();
	}
	DxLib_End();
	return 0;
}

void my_init_back_img(){
	back_img = LoadGraph("../back_img.jpg");
}

void my_init_variable(){
	gamecount = 0;
	Color_White = GetColor(255, 255, 255);
	Color_Gray = GetColor(100, 100, 100);
	back_img_y = 0;
}

void my_init_player(){
	p1.x = 0;
	p1.y = -200;
	p1.draw_x = 0;
	p1.draw_y = 0;
	p1.speed = 4;
	p1.shot_type = 0;
	p1.bomb = 1;
	p1.power = 1;
	p1.life = 3;
	p1.range = 10;
}

void my_move_back(){
	back_img_y++;
	if (back_img_y > 480){
		back_img_y = 0;
	}
}

void my_move_player(){
	if (key[KEY_INPUT_RIGHT] >= 1 && p1.x < RIGHT_LIMIT){
		p1.x += p1.speed;
	}
	if (key[KEY_INPUT_DOWN] >= 1 && p1.y > BOTTOM_LIMIT){
		p1.y -= p1.speed;
	}
	if (key[KEY_INPUT_LEFT] >= 1 && p1.x > LEFT_LIMIT){
		p1.x -= p1.speed;
	}
	if (key[KEY_INPUT_UP] >= 1 && p1.y < TOP_LIMIT){
		p1.y += p1.speed;
	}
}

void my_to_center(){
	p1.draw_x = p1.x + 220;
	p1.draw_y = ((-1) * p1.y) + 240;
}

void my_draw_back(){
	DrawGraph(0, back_img_y, back_img, TRUE);
	DrawGraph(0, back_img_y - 480, back_img, TRUE);
	DrawLine(0, 240, 440, 240, Color_White);
	DrawLine(220, 0, 220, 480, Color_White);
	DrawFormatString(220, 240, Color_White, "(0,0)");
}

void my_draw_player(){
	DrawFormatString(p1.draw_x, p1.draw_y, Color_White, "Ｐ[%d][%d]", (int)p1.x, (int)p1.y);
}

void my_draw_score_board(){
	DrawBox(440,0,640,480,Color_Gray,true);
	DrawFormatString(460, 20, Color_White, "gamecount = %d", gamecount);
	DrawFormatString(460, 380, Color_White, "操作方法");
	DrawFormatString(460, 400, Color_White, "移動:矢印キー");
}

void my_timer(){
	gamecount++;
}
	
int my_get_key(){
	char keys[256];
	GetHitKeyStateAll(keys);
	for (int i = 0; i < 256; i++){
		if (keys[i] != 0){
			key[i]++;
		}
		else{
			key[i] = 0;
		}
	}
	return 0;
}
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