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/*ＳＴＧの作り方　関数表示プログラム*/
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#include "DxLib.h"

void my_init_point(void);
void my_init_color(void);

void my_move_point(void);

void my_to_center(void);

void my_draw_back(void);
void my_draw_point(void);
void my_draw_score_board(void);

double x,y,draw_x,draw_y;

int count;
int Color_White;
int Color_Gray;

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

	my_init_point();
	my_init_color();

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

		my_draw_back();
		
		if(count % 10 == 1){
			my_move_point();
			my_to_center();
			my_draw_point();
		}

		my_draw_score_board();

		count++;
	}
	DxLib_End();
	return 0;
}

void my_init_point(){
	x = -220;
	y = 0;
	draw_x = 0;
	draw_y = 0;
}

void my_init_color(){
	Color_White = GetColor(255, 255, 255);
	Color_Gray = GetColor(100, 100, 100);
}

void my_move_point(){
	x = x + 8;
	y = 1 * x;
}

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

void my_draw_back(){
	DrawLine(0, 240, 440, 240, Color_White);
	DrawLine(220, 0, 220, 480, Color_White);
	DrawFormatString(220, 240, Color_White, "(0,0)");
}

void my_draw_score_board(){
	DrawBox(440,0,640,480,Color_Gray,true);
	DrawFormatString(490, 20, Color_White, "Ｃ言語入門");
	DrawFormatString(475, 40, Color_White, "ＳＴＧの作り方");
	DrawFormatString(460, 60, Color_White, "関数表示プログラム");
	DrawFormatString(500, 360, Color_White, "count:%d",count);
	DrawFormatString(500, 380, Color_White, "x座標:%d",(int)x);
	DrawFormatString(500, 400, Color_White, "y座標:%d",(int)y);
}

void my_draw_point(){
	DrawCircle(draw_x,draw_y, 3, Color_White, 1);
}
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