Arnav Jindia / Mbed 2 deprecated Missile_Control_Game

Missile Control Game with uLCD

Dependencies:   4DGL-uLCD-SE SDFileSystem mbed wave_player

Fork of missile_command by ECE 2035 TA

missile/missile.cpp@2:eba4ed0263a4, 2015-10-20 (annotated)

Committer:
ajindia6
Date:
Tue Oct 20 19:13:03 2015 +0000
Revision:
2:eba4ed0263a4
Parent:
0:532cb55d6136 
Mbed Mission Control Game

Who changed what in which revision?

UserRevisionLine numberNew contents of line
arvahsu 0:532cb55d6136 1 #include "missile_private.h"
arvahsu 0:532cb55d6136 2
arvahsu 0:532cb55d6136 3 MISSILE missile_record[MAX_NUM_MISSILE];
arvahsu 0:532cb55d6136 4 int missile_tick=0;
arvahsu 0:532cb55d6136 5 int missile_interval = 10;
arvahsu 0:532cb55d6136 6 int missile_speed = 4;
arvahsu 0:532cb55d6136 7
arvahsu 0:532cb55d6136 8 // See the comments in missile_public.h
arvahsu 0:532cb55d6136 9 void missile_generator(void){
arvahsu 0:532cb55d6136 10 missile_tick++;
arvahsu 0:532cb55d6136 11 // only fire the missile at certain ticks
arvahsu 0:532cb55d6136 12 if((missile_tick % missile_interval)==0 || missile_tick==0){
arvahsu 0:532cb55d6136 13 missile_create();
arvahsu 0:532cb55d6136 14 }
arvahsu 0:532cb55d6136 15
arvahsu 0:532cb55d6136 16 // update the missiles and draw them
arvahsu 0:532cb55d6136 17 missile_update_position();
arvahsu 0:532cb55d6136 18 }
arvahsu 0:532cb55d6136 19
arvahsu 0:532cb55d6136 20 // set missile speed (default speed is 4)
arvahsu 0:532cb55d6136 21 void set_missile_speed(int speed){
arvahsu 0:532cb55d6136 22 ASSERT_P(speed>=1 && speed<=8,ERROR_MISSILE_SPEED);
arvahsu 0:532cb55d6136 23 if(speed>=1 && speed<=8){
arvahsu 0:532cb55d6136 24 missile_speed = speed;
arvahsu 0:532cb55d6136 25 }
arvahsu 0:532cb55d6136 26 }
arvahsu 0:532cb55d6136 27
arvahsu 0:532cb55d6136 28 // set missile interval (default interval is 10)
arvahsu 0:532cb55d6136 29 void set_missile_interval(int interval){
arvahsu 0:532cb55d6136 30 ASSERT_P(interval>=1 && interval<=100,ERROR_MISSILE_INTERVAL);
arvahsu 0:532cb55d6136 31 if(interval>=1 && interval<=100){
arvahsu 0:532cb55d6136 32 missile_interval = interval;
arvahsu 0:532cb55d6136 33 }
arvahsu 0:532cb55d6136 34 }
arvahsu 0:532cb55d6136 35
arvahsu 0:532cb55d6136 36 // See the comments in missile_public.h
arvahsu 0:532cb55d6136 37 MISSILE missile_get_info(int index){
arvahsu 0:532cb55d6136 38 // All interface for user should have error checking
arvahsu 0:532cb55d6136 39 ASSERT_P(index<MAX_NUM_MISSILE,ERROR_MISSILE_INDEX_GET_INFO);
arvahsu 0:532cb55d6136 40
arvahsu 0:532cb55d6136 41 return missile_record[index];
arvahsu 0:532cb55d6136 42 }
arvahsu 0:532cb55d6136 43
arvahsu 0:532cb55d6136 44 // See the comments in missile_public.h
arvahsu 0:532cb55d6136 45 void missile_set_exploded(int index){
arvahsu 0:532cb55d6136 46 // All interface for user should have error checking
arvahsu 0:532cb55d6136 47 ASSERT_P(index<MAX_NUM_MISSILE,ERROR_MISSILE_INDEX_UPDATE_STATUS);
arvahsu 0:532cb55d6136 48
arvahsu 0:532cb55d6136 49 missile_record[index].status = MISSILE_EXPLODED;
arvahsu 0:532cb55d6136 50 }
arvahsu 0:532cb55d6136 51
arvahsu 0:532cb55d6136 52 /** This function finds an empty slot of missile record, and active it.
arvahsu 0:532cb55d6136 53 */
arvahsu 0:532cb55d6136 54 void missile_create(void){
arvahsu 0:532cb55d6136 55 int i;
arvahsu 0:532cb55d6136 56 for(i=0;i<MAX_NUM_MISSILE;i++){
arvahsu 0:532cb55d6136 57 if(missile_record[i].status == MISSILE_DEACTIVE){
arvahsu 0:532cb55d6136 58 missile_record[i].y = 0;
arvahsu 0:532cb55d6136 59 //each missile has its own tick
arvahsu 0:532cb55d6136 60 missile_record[i].tick = 0;
arvahsu 0:532cb55d6136 61 //set a random source for the missile
arvahsu 0:532cb55d6136 62 missile_record[i].source_x = rand() % SIZE_X;
arvahsu 0:532cb55d6136 63 //set a random target for the missile
arvahsu 0:532cb55d6136 64 missile_record[i].target_x = rand() % SIZE_X;
arvahsu 0:532cb55d6136 65 //the missile starts at its source
arvahsu 0:532cb55d6136 66 missile_record[i].x = missile_record[i].source_x;
arvahsu 0:532cb55d6136 67 missile_record[i].status = MISSILE_ACTIVE;
arvahsu 0:532cb55d6136 68 break;
arvahsu 0:532cb55d6136 69 }
arvahsu 0:532cb55d6136 70 }
arvahsu 0:532cb55d6136 71 }
arvahsu 0:532cb55d6136 72
arvahsu 0:532cb55d6136 73 /** This function update the position of all missiles and draw them
arvahsu 0:532cb55d6136 74 */
arvahsu 0:532cb55d6136 75 void missile_update_position(void){
arvahsu 0:532cb55d6136 76 int i;
arvahsu 0:532cb55d6136 77 //controls how fast the missile will move
arvahsu 0:532cb55d6136 78 int rate = missile_speed * 25;
arvahsu 0:532cb55d6136 79 //delta_x and delta_y account for the slope of the missile
arvahsu 0:532cb55d6136 80 double delta_x,delta_y;
arvahsu 0:532cb55d6136 81 for(i=0;i<MAX_NUM_MISSILE;i++){
arvahsu 0:532cb55d6136 82 if(missile_record[i].status == MISSILE_ACTIVE){
arvahsu 0:532cb55d6136 83 // update missile position
arvahsu 0:532cb55d6136 84 delta_y = 200/rate;
arvahsu 0:532cb55d6136 85 delta_x = (missile_record[i].target_x - missile_record[i].source_x)/rate;
arvahsu 0:532cb55d6136 86 missile_draw(missile_record[i], BACKGROUND_COLOR);
arvahsu 0:532cb55d6136 87 missile_record[i].y = (int)(delta_y*(missile_record[i].tick%rate));
arvahsu 0:532cb55d6136 88 missile_record[i].x = (int)(missile_record[i].source_x + delta_x*(missile_record[i].tick%rate));
arvahsu 0:532cb55d6136 89 // draw missile
arvahsu 0:532cb55d6136 90 missile_draw(missile_record[i], MISSILE_COLOR);
arvahsu 0:532cb55d6136 91 //update missile's internal tick
arvahsu 0:532cb55d6136 92 missile_record[i].tick++;
arvahsu 0:532cb55d6136 93 }
arvahsu 0:532cb55d6136 94 else if(missile_record[i].status == MISSILE_EXPLODED){
arvahsu 0:532cb55d6136 95 // clear the missile on the screen
arvahsu 0:532cb55d6136 96 missile_draw(missile_record[i], BACKGROUND_COLOR);
arvahsu 0:532cb55d6136 97
arvahsu 0:532cb55d6136 98 // we have done with this missile, remove it from record
arvahsu 0:532cb55d6136 99 missile_record[i].status = MISSILE_DEACTIVE;
arvahsu 0:532cb55d6136 100 //resets the missile's internal tick
arvahsu 0:532cb55d6136 101 missile_record[i].tick = 0;
arvahsu 0:532cb55d6136 102 }
arvahsu 0:532cb55d6136 103
arvahsu 0:532cb55d6136 104 }
arvahsu 0:532cb55d6136 105 }
arvahsu 0:532cb55d6136 106
arvahsu 0:532cb55d6136 107 /** This function draw a missile.
arvahsu 0:532cb55d6136 108 @param missile The missile to be drawn
arvahsu 0:532cb55d6136 109 @param color The color of the missile
arvahsu 0:532cb55d6136 110 */
arvahsu 0:532cb55d6136 111 void missile_draw(MISSILE missile, int color){
arvahsu 0:532cb55d6136 112 int init_x,init_y,current_x,current_y;
arvahsu 0:532cb55d6136 113
arvahsu 0:532cb55d6136 114 init_x = missile.source_x;
arvahsu 0:532cb55d6136 115 init_y = 0;
arvahsu 0:532cb55d6136 116 current_x = missile.x;
arvahsu 0:532cb55d6136 117 current_y = missile.y;
arvahsu 0:532cb55d6136 118 uLCD.line(init_x, init_y, current_x, current_y, color);
arvahsu 0:532cb55d6136 119 }
arvahsu 0:532cb55d6136 120
arvahsu 0:532cb55d6136 121