Elysian Shadows

Code: Select all

void CreatePart(int x, int y, double angle, int intensity, uint8 max_partlife, uint16 size, uint8 color, uint8 a, uint8 r, uint8 g, uint8 b, uint32 &onscreen);
void UpdatePart(float gravity, uint32 &onscreen); //Updates particle physics
void DrawPart(uint8 max_partlife); //Draws particles
void CleanupPart();

class Part {
public:
	Part() {
		next = NULL;
		prev = NULL;
	}
	
	void Draw();
	void Update();

	float x, y;
    float xvel, yvel;
    int life, size;
	uint8 color, a, r, g, b;

    Part *next;
	Part *prev;
};

Part *first_part, *last_part;

Code: Select all

void CreatePart(int x, int y, double angle, int intensity, uint8 max_partlife, uint16 size, uint8 color, uint8 a, uint8 r, uint8 g, uint8 b, uint32 &onscreen) {
	Part *part;
	double relative_angle;

	for(int i = 0; i < intensity; i++) {
		part = NULL;
		part = new Part;
        
		if(!first_part) {
		    first_part = part;
			part->prev = NULL;
		} else {
            last_part->next = part;
			part->prev = last_part;
		}
        
		last_part = part;
		part->next = NULL;
    }
}



void UpdatePart(float gravity, uint32 &onscreen) {
	Part *part;
	Part *nextpart;

	for(part = first_part; part;) {
		
		if(!part) break;
		
		nextpart = part->next;

		if(part->life <= 0) {
			if (part == first_part && part == last_part) {
				first_part = NULL;
				last_part = NULL;
			} else {
				if (part == first_part) {
					first_part = part->next;
				} else if(part == last_part) {
					last_part = part->prev;
				}
			}

			if(part->prev) part->prev->next = part->next;
			if(part->next) part->next->prev = part->prev;			
			part->next = NULL;
			part->prev = NULL;
			
			
			delete part;
			part = NULL;
			onscreen--;
		} else {

                     //Update the particle, it's still alive

		}
	part = nextpart;
	}
}