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1 #include <iostream>
2 using namespace std;
3
4 void printGrid(char grid[][5], int w, int h);
5
6 int main()
7 {
8 // Create a 5 by 5 grid array of chars
9 char grid[5][5];
10 srand(time(0));
11 // Now loop through each row
12 for (int i = 0; i < 5; i++)
13 {
14 //then each column and set each space to '+'
15 for (int j = 0; j < 5; j++)
16 {
17 grid[i][j] = '+';
18 }
19 }
20 int a, b, c , d;
21 int count = 0;
22 //variables a & b are the predator.
23 //Starting location of predator.
24 a = (rand()%5);
25 b = (rand()%5);
26
27 //variables c & d are the prey.
28 //Starting location of prey.
29
30 c = (rand()%5);
31 if(c = a)
32 {
33 c = (rand()%5);
34 }
35 d = (rand()%5);
36 if(d = b)
37 {
38 d = (rand()%5);
39 }
40
41 //place the starting positions in the grid.
42 //predator is X.
43 grid[a][b] = 'X';
44 //prey is 0.
45 grid[c][d] = 'O';
46 printGrid(grid,5,5);
47 while(1)
48 {
49 if(a == c)
50 {
51 if(b == d)
52 {
53 cout << "That is the final move." << endl;
54 cout << "It took " << count << " turns for the prey to be caught" << endl;
55 return 0;
56 }
57 }
58
59 /*Next is movement, replacing the
60 previous position with a + and
61 moving the X and O to the new
62 location*/
63 int predMove, preyMove;
64 predMove = (rand()%4);
65
66 preyMove = (rand()%4);
67
68 //predator movement based on rand.
69 grid[a][b] = '+';
70 //up
71 if(predMove == 0)
72 {
73 if(a+1 <= 4)
74 {
75 a++;
76 }
77 else
78 {
79 a--;
80 }
81 }
82 //down
83 if(predMove == 1)
84 {
85 if(a-1 >= 0)
86 {
87 a--;
88 }
89 else
90 {
91 a++;
92 }
93 }
94 //right
95 if(predMove == 2)
96 {
97 if(b+1 <= 4)
98 {
99 b++;
100 }
101 else
102 {
103 b--;
104 }
105 }
106 //left
107 if(predMove == 3)
108 {
109 if(b-1 >= 0)
110 {
111 b--;
112 }
113 else
114 {
115 b++;
116 }
117 }
118 grid[a][b] = 'X';
119
120 //prey movement based on rand.
121 grid[c][d] = '+';
122 //up
123 if(preyMove == 0)
124 {
125 if(c+1 <= 4)
126 {
127 c++;
128 }
129 else
130 {
131 c--;
132 }
133 }
134 //down
135 if(preyMove == 1)
136 {
137 if(c-1 >= 0)
138 {
139 c--;
140 }
141 else
142 {
143 c++;
144 }
145 }
146 //right
147 if(preyMove == 2)
148 {
149 if(d+1 <= 4)
150 {
151 d++;
152 }
153 else
154 {
155 d--;
156 }
157 }
158 //left
159 if(preyMove == 3)
160 {
161 if(d-1 >= 0)
162 {
163 d--;
164 }
165 else
166 {
167 d++;
168 }
169 }
170 grid[c][d] = 'O';
171 count++;
172
173 // reprint the grid of 5 by 5 to show movements
174 printGrid(grid,5,5);
175 if(a == c)
176 {
177 if(b == d)
178 {
179 cout << "That is the final move." << endl;
180 cout << "It took " << count << " turns for the prey to be caught" << endl;
181 return 0;
182 }
183 }
184 }
185
186 return 0;
187 }
188
189 void printGrid(char grid[][5], int w, int h)
190 {
191 for (int i = 0; i < w; i++)
192 {
193 for (int j = 0; j < h; j++)
194 {
195 cout << grid[i][j] << " ";
196 }
197 cout << endl;
198 }
199 cout << "-----------------------------" << endl;
200 }
201
202
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