Erik Lomas / Mbed 2 deprecated 4180lab4

Revenge of the Mouse

Dependencies:   4DGL-uLCD-SE EthernetInterface Game_Synchronizer LCD_fonts MMA8452 SDFileSystem mbed-rtos mbed wave_player

Fork of 2035_Tanks_Shell by ECE2035 Spring 2015 TA

bullet.cpp@15:4b27a3a95772, 2015-10-26 (annotated)

Committer:
jford38
Date:
Mon Oct 26 04:12:35 2015 +0000
Revision:
15:4b27a3a95772
Updates. Idk. Leave me alone. It's late.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jford38 15:4b27a3a95772 1 #include "bullet.h"
jford38 15:4b27a3a95772 2 #include "game_synchronizer.h"
jford38 15:4b27a3a95772 3 #include "globals.h"
jford38 15:4b27a3a95772 4 #include "math.h"
jford38 15:4b27a3a95772 5
jford38 15:4b27a3a95772 6 extern Game_Synchronizer sync;
jford38 15:4b27a3a95772 7
jford38 15:4b27a3a95772 8 Bullet::Bullet(Tank* t) {
jford38 15:4b27a3a95772 9 tank = t;
jford38 15:4b27a3a95772 10 speed = 30;
jford38 15:4b27a3a95772 11 in_flight = false;
jford38 15:4b27a3a95772 12 }
jford38 15:4b27a3a95772 13 void Bullet::shoot(void) {
jford38 15:4b27a3a95772 14 if(in_flight) {return;}
jford38 15:4b27a3a95772 15 time = 0;
jford38 15:4b27a3a95772 16 tank->barrel_end(x0, y0);
jford38 15:4b27a3a95772 17 x = x0; y = y0;
jford38 15:4b27a3a95772 18 vx0 = speed*cos(tank->barrel_theta);
jford38 15:4b27a3a95772 19 vy0 = speed*sin(tank->barrel_theta);
jford38 15:4b27a3a95772 20 in_flight = true;
jford38 15:4b27a3a95772 21 }
jford38 15:4b27a3a95772 22
jford38 15:4b27a3a95772 23 int Bullet::time_step(float dt) {
jford38 15:4b27a3a95772 24 if(!in_flight) {return 0;}
jford38 15:4b27a3a95772 25 time += dt;
jford38 15:4b27a3a95772 26 int new_x = x0 + vx0*time;
jford38 15:4b27a3a95772 27 int new_y = y0 + vy0*time + 0.5*(-9.81)*time*time;
jford38 15:4b27a3a95772 28
jford38 15:4b27a3a95772 29 if(new_x == x && new_y == y) { // Didn't move!
jford38 15:4b27a3a95772 30 return 0;
jford38 15:4b27a3a95772 31 }
jford38 15:4b27a3a95772 32
jford38 15:4b27a3a95772 33 if(new_x < 0 || new_x > 128 || new_y < 0 || new_y > 128) {
jford38 15:4b27a3a95772 34 in_flight = false;
jford38 15:4b27a3a95772 35 return 0;
jford38 15:4b27a3a95772 36 }
jford38 15:4b27a3a95772 37
jford38 15:4b27a3a95772 38 int col = sync.read_pixel(new_x, new_y);
jford38 15:4b27a3a95772 39 if(col != CONVERT_24_TO_16_BPP(SKY_COLOR)) {
jford38 15:4b27a3a95772 40 sync.pixel(x, y, SKY_COLOR);
jford38 15:4b27a3a95772 41 sync.filled_circle(new_x, new_y, 4, SKY_COLOR);
jford38 15:4b27a3a95772 42 in_flight = false;
jford38 15:4b27a3a95772 43
jford38 15:4b27a3a95772 44 if(col == CONVERT_24_TO_16_BPP(TANK_BLUE)) {
jford38 15:4b27a3a95772 45 return 1;
jford38 15:4b27a3a95772 46 }
jford38 15:4b27a3a95772 47 return 0;
jford38 15:4b27a3a95772 48 }
jford38 15:4b27a3a95772 49 sync.pixel(x, y, SKY_COLOR);
jford38 15:4b27a3a95772 50
jford38 15:4b27a3a95772 51 x = new_x;
jford38 15:4b27a3a95772 52 y = new_y;
jford38 15:4b27a3a95772 53 sync.pixel(x, y, BLACK);
jford38 15:4b27a3a95772 54 return 0;
jford38 15:4b27a3a95772 55 }