collision.c

#include "headers/collision.h"

	//TODO: clean this

int null = 2147483647;

int colX[arraySize];
int colY[arraySize];
int tracker = 0;

void clearCol() {
	tracker = 0;
	int i;
	for (i = 0; i < arraySize; i++) {
		colY[tracker] = 0;
		colX[tracker] = 0;
		tracker++;
	}
	tracker = 0;
}

void printCol(char character, bool printAll) {
	int i;
	for (i = 0; i < arraySize; i++){
		if (colX[i] == 0 && colY[i] == 0 && !printAll){
			return;
		} else {
			mvaddch(colY[i],colX[i],character);
		}
	}
}

void addCol(int y, int x) {
	int i;
	for (i = 0; i < arraySize; i++){
		if (colX[i] == x && colY[i] == y){
			return;
		}
	}
	colY[tracker] = y;
	colX[tracker] = x;
	tracker++;
}

void tmvaddch(char character, int y, int x) {
	int i;
	for (i = 0; i < arraySize; i++){
		if (colX[i] == x && colY[i] == y){
			mvaddch(y, x, character);
			return;
		}
	}
	colY[tracker] = y;
	colX[tracker] = x;
	tracker++;
}

bool colCheck(int y, int x){
	int i;
	for(i = 0; i < arraySize; i++){
		if (colX[i] == x && colY[i] == y){
			return true;
		}
	}
	return false;
}


void drawColLine(int x1,int y1,int x2,int y2,char c) {

	int x, y, dx, dy, dx1, dy1, px, py, xe, ye, i;
	dx = x2 - x1;
	dy = y2 - y1;
	dx1 = fabs(dx);
	dy1 = fabs(dy);
	px = 2 * dy1 - dx1;
	py = 2 * dx1 - dy1;

	if(dy1 <= dx1) {
		if(dx >= 0) {
			x = x1;
			y = y1;
			xe = x2;
		} else {
			x = x2;
			y = y2;
			xe = x1;
		}

		tmvaddch(c,y,x);

		for(i=0; x < xe; i++) {
			x++;
			if(px < 0) {
				px += 2 * dy1;
			} else {
				if((dx < 0 && dy < 0) || (dx > 0 && dy > 0)) {
					y++;
				} else {
					y--;
				}

				px += 2 * (dy1 - dx1);
			}

			tmvaddch(c,y,x);
		}
	} else {
		if(dy >= 0) {
			x = x1;
			y = y1;
			ye = y2;
		} else {
			x = x2;
			y = y2;
			ye = y1;
		}

		tmvaddch(c,y,x);
		
		for(i = 0; y < ye; i++) {
			y++;
			if(py <= 0) {
				py += 2 * dx1;
			} else {
				if((dx < 0 && dy < 0) || (dx > 0 && dy > 0)) {
					x++;
				} else {
					x--;
				}
				py += 2 * (dx1 - dy1);
			}
			
			tmvaddch(c,y,x);
		}
	}
}