level.cpp

#include "level.h"

void LEVEL::create() {
	
	int divider;
	
	image = create_bitmap(SCREEN_W, MAX_LEVELHEIGHT + 50); // the +50 adds room for gore to pile up
	terrain = (BITMAP*)terrain_data[0].dat;
	clear_to_color(image, makecol(255, 0, 255)); // Clear it to transparent pink
	height[0] = 20 + rand() % (MAX_LEVELHEIGHT - 70);
	draw_sprite(image, terrain, 0, MAX_LEVELHEIGHT - height[0]);
	
	for (int i = 1; i < SCREEN_W; ++i) {
	
		do {
			divider = 1 + rand() % 8;
			height[i] = height[i-1] + rand() % 2 - rand() % 2;
			height[i] = height[i] + int(sin(rand()%SCREEN_W) / divider);

		} while (height[i] > MAX_LEVELHEIGHT || height[i] < 10);
	
		draw_sprite(image, terrain, i, MAX_LEVELHEIGHT - height[i]);
	}
}