commit 33f734d

cotton v0.2 - cot can now do math yay (i also noticed some more stuff that clang-format fucked up,, or maybe it was me idk, but its fixed now :D

  1@@ -89,8 +89,8 @@ static void draw_char
  2 
  3 // da commands
  4 
  5-static void cmd_print
  6-(Cotton *cotton, CottonWindow *cw, char *arg)
  7+static void 
  8+cmd_print(Cotton *cotton, CottonWindow *cw, char *arg)
  9 {
 10     if (!arg)
 11         return;
 12@@ -126,8 +126,8 @@ static void cmd_print
 13     cottonwindow_update(cw, cotton->video, sizeof(cotton->video[0]) * VIDEO_WIDTH);
 14 }
 15 
 16-static void cmd_var
 17-(Cotton *cotton, char *arg)
 18+static void 
 19+cmd_var(Cotton *cotton, char *arg)
 20 {
 21     if (!arg)
 22         return;
 23@@ -145,25 +145,8 @@ static void cmd_var
 24     cotton_store_var(cotton, name, value);
 25 }
 26 
 27-static void
 28-cmd_wait(Cotton *cotton, char *arg)
 29-{
 30-    if (!arg)
 31-        return;
 32-
 33-    int seconds = atoi(arg);
 34-
 35-    cotton->ticktock = SDL_GetTicks() + (seconds * 1000);
 36-}
 37-
 38 static void 
 39-cmd_kill(void)
 40-{
 41-    printf("[cotton stopped]\n");
 42-    exit(0);
 43-}
 44-
 45-static void cmd_clear(Cotton *cotton, CottonWindow *cw)
 46+cmd_clear(Cotton *cotton, CottonWindow *cw)
 47 {
 48     for (int i = 0; i < VIDEO_WIDTH * VIDEO_HEIGHT; i++) {
 49         cotton->video[i] = 0;
 50@@ -210,6 +193,17 @@ cmd_color(Cotton *cotton, char *arg)
 51                 arg);
 52 }
 53 
 54+static void 
 55+cmd_wait(Cotton *cotton, char *arg)
 56+{
 57+    if (!arg)
 58+        return;
 59+
 60+    int seconds = atoi(arg);
 61+
 62+    cotton->ticktock = SDL_GetTicks() + (seconds * 1000);
 63+}
 64+
 65 static void 
 66 cmd_input(Cotton *cotton, char *arg)
 67 {
 68@@ -221,9 +215,7 @@ cmd_input(Cotton *cotton, char *arg)
 69 
 70     char buffer[VAR_VAL_LEN];
 71 
 72-    // kind of a quick and dirty way of implementing input, i know, but, i cant
 73-    // be arsed to get myself into a potential rabbit hole with SDL so for now i
 74-    // will leave this to be this way,, sorry,,
 75+    // kind of a quick and dirty way of implementing input, i know, but, i cant be arsed to get myself into a potential rabbit hole with SDL so for now i  will leave this to be this way,, sorry,,
 76     if (fgets(buffer, sizeof(buffer), stdin) != NULL) {
 77         buffer[strcspn(buffer, "\r\n")] = '\0';
 78 
 79@@ -231,6 +223,69 @@ cmd_input(Cotton *cotton, char *arg)
 80     }
 81 }
 82 
 83+static void 
 84+cmd_kill(void)
 85+{
 86+    printf("[cotton stopped]\n");
 87+    exit(0);
 88+}
 89+
 90+static void 
 91+cmd_math(Cotton *cotton, char *arg, char op)
 92+{
 93+    char var_name[64];
 94+    char value[64];
 95+
 96+    if (!arg || sscanf(arg, "%63s %63s", var_name, value) != 2) {
 97+        fprintf(stderr, "cot syntax error: usage is '<add, sub, mult, div> <variable> <number OR another variable>'\n");
 98+        return;
 99+    }
100+
101+    int current = 0;
102+    int amount = 0;
103+
104+    // thank you clang for coming in clutch and telling me to make this const i forgor (skull emoji)
105+    const char *var = get_var_value(cotton, var_name);
106+    if (var) {
107+        current = atoi(var);
108+    }
109+
110+    // and this too, i love clang, clang is the best compiler evah !!!
111+    const char *other = get_var_value(cotton, value);
112+    if (other) {
113+        amount = atoi(other);
114+    } else {
115+        amount = atoi(value);
116+    }
117+
118+    switch (op) {
119+        case '+':
120+            current += amount;
121+            break;
122+
123+        case '-':
124+            current -= amount;
125+            break;
126+
127+        case '*':
128+            current *= amount;
129+            break;
130+
131+        case '/':        
132+            current /= amount;
133+            break;
134+
135+        default:
136+            fprintf(stderr, "cot syntax error: cot doesn't know what operator this is :( \n");
137+            return;
138+    }
139+
140+    char buffer[32];
141+    sprintf(buffer, "%d", current);
142+
143+    cotton_store_var(cotton, var_name, buffer);
144+}
145+
146 static void 
147 cmd_unknown(const char *cmd)
148 {
149@@ -300,6 +355,22 @@ cotton_interpret(Cotton *cotton, CottonWindow *cw, FILE *file)
150         cmd_kill();
151     }
152 
153+    else if (strcmp(cmd, "add") == 0) {
154+        cmd_math(cotton, arg, '+');
155+    }
156+
157+    else if (strcmp(cmd, "sub") == 0) {
158+        cmd_math(cotton, arg, '-');
159+    }
160+
161+    else if (strcmp(cmd, "mult") == 0) {
162+        cmd_math(cotton, arg, '*');
163+    }
164+
165+    else if (strcmp(cmd, "div") == 0) {
166+        cmd_math(cotton, arg, '/');
167+    }
168+
169     else {
170         cmd_unknown(cmd);
171     }