代写代考 //=================================================================

//=================================================================
// Implementation of missile module.
// Copyright 2021 Georgia Tech. All rights reserved.
// The materials provided by the instructor in this course are for

Copyright By PowCoder代写 加微信 powcoder

// the use of the students currently enrolled in the course.
// Copyrighted course materials may not be further disseminated.
// This file must not be made publicly available anywhere.
//==================================================================

#include “missile_private.h”
#include “doubly_linked_list.h”

int missile_tick=0;

//Create a DLL for missiles
DLinkedList* missileDLL = NULL;

void missile_init(void)
missileDLL = create_dlinkedlist();

// See the comments in missile_public.h
void missile_generator(void){
missile_tick++;
// only fire the missile at certain ticks
if((missile_tick % MISSILE_INTERVAL)==0 || missile_tick==0){
//printf(“missile_create()”);
missile_create();
// update the missiles and draw them
missile_update_position();

void missile_create(void){
MISSILE* M = (MISSILE*)malloc(sizeof(MISSILE));
//each missile has its own tick
M->tick = 0;
//set a random source for the missile
M->source_x = rand() % SIZE_X;
//set a random target for the missile
M->target_x = rand() % SIZE_X;
//the missile starts at its source
M->x = M->source_x;

M->status = MISSILE_ACTIVE;

insertHead(missileDLL, M);

/** This function update the position of all missiles and draw them
void missile_update_position(void){
//controls how fast the missile will move
int rate = MISSILE_SPEED * 25;
//delta_x and delta_y account for the slope of the missile
double delta_x, delta_y;
LLNode* current = missileDLL->head;
MISSILE* newMissile;
//iterate over all missiles
while(current)
{ newMissile = (MISSILE*) current->data;
if(newMissile->status == MISSILE_EXPLODED)
// clear the missile on the screen
missile_draw(newMissile, BACKGROUND_COLOR);

// Remove it from the list
//pc.printf(“deleting missile node…\n”);
deleteNode(missileDLL, current);
//pc.printf(“missile node deleted.\n”);
//cover the last missile location
missile_draw(newMissile, BACKGROUND_COLOR);

// update missile position
delta_y = 200/rate;
delta_x = (newMissile->target_x – newMissile->source_x)/rate;
newMissile->y = (int)(delta_y*(newMissile->tick%rate));
newMissile->x = (int)(newMissile->source_x + delta_x*(newMissile->tick%rate));
// draw missile
missile_draw(newMissile, MISSILE_COLOR);
//update missile’s internal tick
newMissile->tick++;
// Advance the loop
current = current->next;

// set missile speed (default speed is 4)
void set_missile_speed(int speed){
ASSERT_P(speed>=1 && speed<=8,ERROR_MISSILE_SPEED); if(speed>=1 && speed<=8){ MISSILE_SPEED = speed; // set missile interval (default interval is 10) void set_missile_interval(int interval){ ASSERT_P(interval>=1 && interval<=100,ERROR_MISSILE_INTERVAL); if(interval>=1 && interval<=100){ MISSILE_INTERVAL = interval; // See comments in missile_public.h DLinkedList* get_missile_list() { return missileDLL; /** This function draws a missile. @param missile The missile to be drawn @param color The color of the missile void missile_draw(MISSILE* missile, int color){ int init_x,init_y,current_x,current_y; init_x = missile->source_x;
init_y = 0;
current_x = missile->x;
current_y = missile->y;
uLCD.line(init_x, init_y, current_x, current_y, color);

程序代写 CS代考 加微信: powcoder QQ: 1823890830 Email: powcoder@163.com