Sizhe Lin / Mbed 2 deprecated missile_command_Sizhe_Lin

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Dependencies:   4DGL-uLCD-SE SDFileSystem mbed wave_player

Fork of missile_command by ECE 2035 TA

missile/missile.cpp@0:532cb55d6136, 2014-10-29 (annotated)

Committer:
arvahsu
Date:
Wed Oct 29 01:21:34 2014 +0000
Revision:
0:532cb55d6136
Child:
2:d39a6a36e0c0
First public version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
arvahsu 0:532cb55d6136 1 /* Gatech ECE2035 2014 FALL missile command
arvahsu 0:532cb55d6136 2 * Copyright (c) 2014 Gatech ECE2035
arvahsu 0:532cb55d6136 3 *
arvahsu 0:532cb55d6136 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
arvahsu 0:532cb55d6136 5 * of this software and associated documentation files (the "Software"), to deal
arvahsu 0:532cb55d6136 6 * in the Software without restriction, including without limitation the rights
arvahsu 0:532cb55d6136 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
arvahsu 0:532cb55d6136 8 * copies of the Software, and to permit persons to whom the Software is
arvahsu 0:532cb55d6136 9 * furnished to do so, subject to the following conditions:
arvahsu 0:532cb55d6136 10 *
arvahsu 0:532cb55d6136 11 * The above copyright notice and this permission notice shall be included in
arvahsu 0:532cb55d6136 12 * all copies or substantial portions of the Software.
arvahsu 0:532cb55d6136 13 *
arvahsu 0:532cb55d6136 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
arvahsu 0:532cb55d6136 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
arvahsu 0:532cb55d6136 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
arvahsu 0:532cb55d6136 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
arvahsu 0:532cb55d6136 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
arvahsu 0:532cb55d6136 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
arvahsu 0:532cb55d6136 20 * SOFTWARE.
arvahsu 0:532cb55d6136 21 */
arvahsu 0:532cb55d6136 22
arvahsu 0:532cb55d6136 23 #include "missile_private.h"
arvahsu 0:532cb55d6136 24
arvahsu 0:532cb55d6136 25 MISSILE missile_record[MAX_NUM_MISSILE];
arvahsu 0:532cb55d6136 26 int missile_tick=0;
arvahsu 0:532cb55d6136 27 int missile_interval = 10;
arvahsu 0:532cb55d6136 28 int missile_speed = 4;
arvahsu 0:532cb55d6136 29
arvahsu 0:532cb55d6136 30 // See the comments in missile_public.h
arvahsu 0:532cb55d6136 31 void missile_generator(void){
arvahsu 0:532cb55d6136 32 missile_tick++;
arvahsu 0:532cb55d6136 33 // only fire the missile at certain ticks
arvahsu 0:532cb55d6136 34 if((missile_tick % missile_interval)==0 || missile_tick==0){
arvahsu 0:532cb55d6136 35 missile_create();
arvahsu 0:532cb55d6136 36 }
arvahsu 0:532cb55d6136 37
arvahsu 0:532cb55d6136 38 // update the missiles and draw them
arvahsu 0:532cb55d6136 39 missile_update_position();
arvahsu 0:532cb55d6136 40 }
arvahsu 0:532cb55d6136 41
arvahsu 0:532cb55d6136 42 // set missile speed (default speed is 4)
arvahsu 0:532cb55d6136 43 void set_missile_speed(int speed){
arvahsu 0:532cb55d6136 44 ASSERT_P(speed>=1 && speed<=8,ERROR_MISSILE_SPEED);
arvahsu 0:532cb55d6136 45 if(speed>=1 && speed<=8){
arvahsu 0:532cb55d6136 46 missile_speed = speed;
arvahsu 0:532cb55d6136 47 }
arvahsu 0:532cb55d6136 48 }
arvahsu 0:532cb55d6136 49
arvahsu 0:532cb55d6136 50 // set missile interval (default interval is 10)
arvahsu 0:532cb55d6136 51 void set_missile_interval(int interval){
arvahsu 0:532cb55d6136 52 ASSERT_P(interval>=1 && interval<=100,ERROR_MISSILE_INTERVAL);
arvahsu 0:532cb55d6136 53 if(interval>=1 && interval<=100){
arvahsu 0:532cb55d6136 54 missile_interval = interval;
arvahsu 0:532cb55d6136 55 }
arvahsu 0:532cb55d6136 56 }
arvahsu 0:532cb55d6136 57
arvahsu 0:532cb55d6136 58 // See the comments in missile_public.h
arvahsu 0:532cb55d6136 59 MISSILE missile_get_info(int index){
arvahsu 0:532cb55d6136 60 // All interface for user should have error checking
arvahsu 0:532cb55d6136 61 ASSERT_P(index<MAX_NUM_MISSILE,ERROR_MISSILE_INDEX_GET_INFO);
arvahsu 0:532cb55d6136 62
arvahsu 0:532cb55d6136 63 return missile_record[index];
arvahsu 0:532cb55d6136 64 }
arvahsu 0:532cb55d6136 65
arvahsu 0:532cb55d6136 66 // See the comments in missile_public.h
arvahsu 0:532cb55d6136 67 void missile_set_exploded(int index){
arvahsu 0:532cb55d6136 68 // All interface for user should have error checking
arvahsu 0:532cb55d6136 69 ASSERT_P(index<MAX_NUM_MISSILE,ERROR_MISSILE_INDEX_UPDATE_STATUS);
arvahsu 0:532cb55d6136 70
arvahsu 0:532cb55d6136 71 missile_record[index].status = MISSILE_EXPLODED;
arvahsu 0:532cb55d6136 72 }
arvahsu 0:532cb55d6136 73
arvahsu 0:532cb55d6136 74 /** This function finds an empty slot of missile record, and active it.
arvahsu 0:532cb55d6136 75 */
arvahsu 0:532cb55d6136 76 void missile_create(void){
arvahsu 0:532cb55d6136 77 int i;
arvahsu 0:532cb55d6136 78 for(i=0;i<MAX_NUM_MISSILE;i++){
arvahsu 0:532cb55d6136 79 if(missile_record[i].status == MISSILE_DEACTIVE){
arvahsu 0:532cb55d6136 80 missile_record[i].y = 0;
arvahsu 0:532cb55d6136 81 //each missile has its own tick
arvahsu 0:532cb55d6136 82 missile_record[i].tick = 0;
arvahsu 0:532cb55d6136 83 //set a random source for the missile
arvahsu 0:532cb55d6136 84 missile_record[i].source_x = rand() % SIZE_X;
arvahsu 0:532cb55d6136 85 //set a random target for the missile
arvahsu 0:532cb55d6136 86 missile_record[i].target_x = rand() % SIZE_X;
arvahsu 0:532cb55d6136 87 //the missile starts at its source
arvahsu 0:532cb55d6136 88 missile_record[i].x = missile_record[i].source_x;
arvahsu 0:532cb55d6136 89 missile_record[i].status = MISSILE_ACTIVE;
arvahsu 0:532cb55d6136 90 break;
arvahsu 0:532cb55d6136 91 }
arvahsu 0:532cb55d6136 92 }
arvahsu 0:532cb55d6136 93 }
arvahsu 0:532cb55d6136 94
arvahsu 0:532cb55d6136 95 /** This function update the position of all missiles and draw them
arvahsu 0:532cb55d6136 96 */
arvahsu 0:532cb55d6136 97 void missile_update_position(void){
arvahsu 0:532cb55d6136 98 int i;
arvahsu 0:532cb55d6136 99 //controls how fast the missile will move
arvahsu 0:532cb55d6136 100 int rate = missile_speed * 25;
arvahsu 0:532cb55d6136 101 //delta_x and delta_y account for the slope of the missile
arvahsu 0:532cb55d6136 102 double delta_x,delta_y;
arvahsu 0:532cb55d6136 103 for(i=0;i<MAX_NUM_MISSILE;i++){
arvahsu 0:532cb55d6136 104 if(missile_record[i].status == MISSILE_ACTIVE){
arvahsu 0:532cb55d6136 105 // update missile position
arvahsu 0:532cb55d6136 106 delta_y = 200/rate;
arvahsu 0:532cb55d6136 107 delta_x = (missile_record[i].target_x - missile_record[i].source_x)/rate;
arvahsu 0:532cb55d6136 108 missile_draw(missile_record[i], BACKGROUND_COLOR);
arvahsu 0:532cb55d6136 109 missile_record[i].y = (int)(delta_y*(missile_record[i].tick%rate));
arvahsu 0:532cb55d6136 110 missile_record[i].x = (int)(missile_record[i].source_x + delta_x*(missile_record[i].tick%rate));
arvahsu 0:532cb55d6136 111 // draw missile
arvahsu 0:532cb55d6136 112 missile_draw(missile_record[i], MISSILE_COLOR);
arvahsu 0:532cb55d6136 113 //update missile's internal tick
arvahsu 0:532cb55d6136 114 missile_record[i].tick++;
arvahsu 0:532cb55d6136 115 }
arvahsu 0:532cb55d6136 116 else if(missile_record[i].status == MISSILE_EXPLODED){
arvahsu 0:532cb55d6136 117 // clear the missile on the screen
arvahsu 0:532cb55d6136 118 missile_draw(missile_record[i], BACKGROUND_COLOR);
arvahsu 0:532cb55d6136 119
arvahsu 0:532cb55d6136 120 // we have done with this missile, remove it from record
arvahsu 0:532cb55d6136 121 missile_record[i].status = MISSILE_DEACTIVE;
arvahsu 0:532cb55d6136 122 //resets the missile's internal tick
arvahsu 0:532cb55d6136 123 missile_record[i].tick = 0;
arvahsu 0:532cb55d6136 124 }
arvahsu 0:532cb55d6136 125
arvahsu 0:532cb55d6136 126 }
arvahsu 0:532cb55d6136 127 }
arvahsu 0:532cb55d6136 128
arvahsu 0:532cb55d6136 129 /** This function draw a missile.
arvahsu 0:532cb55d6136 130 @param missile The missile to be drawn
arvahsu 0:532cb55d6136 131 @param color The color of the missile
arvahsu 0:532cb55d6136 132 */
arvahsu 0:532cb55d6136 133 void missile_draw(MISSILE missile, int color){
arvahsu 0:532cb55d6136 134 int init_x,init_y,current_x,current_y;
arvahsu 0:532cb55d6136 135
arvahsu 0:532cb55d6136 136 init_x = missile.source_x;
arvahsu 0:532cb55d6136 137 init_y = 0;
arvahsu 0:532cb55d6136 138 current_x = missile.x;
arvahsu 0:532cb55d6136 139 current_y = missile.y;
arvahsu 0:532cb55d6136 140 uLCD.line(init_x, init_y, current_x, current_y, color);
arvahsu 0:532cb55d6136 141 }
arvahsu 0:532cb55d6136 142
arvahsu 0:532cb55d6136 143