diff options
Diffstat (limited to 'ki.c')
| -rw-r--r-- | ki.c | 167 |
1 files changed, 167 insertions, 0 deletions
@@ -0,0 +1,167 @@ +#include "global.h"
+#include "ki.h"
+#include "calc.h"
+#include "sprites.h"
+
+#include "mathf.h"
+
+static int kshoot(float x, float y)
+{
+ float xadd, yadd;
+
+ if(Abs(x - player.x) > Abs(y - player.y))
+ {
+ xadd = sgn(player.x - x);
+ yadd = ((player.y - y) / Abs(x - player.x));
+ }
+ else
+ {
+ xadd = ((player.x - x) / Abs(y - player.y));
+ yadd =sgn(player.y - y);
+ }
+
+ while(x < MAPSIZE && y < MAPSIZE && x >= 0 && y >= 0)
+ {
+ if((int)y == (int)player.y && (int)x == (int)player.x)
+ {
+ return TRUE;
+ }
+ if(solids[(int)x][(int)y] == SOLID)
+ {
+ break;
+ }
+ x += xadd;
+ y += yadd;
+ }
+ return FALSE;
+}
+
+static void kimove()
+{
+ int c;
+ int dirx, diry;
+
+ for(c = 0; c < spritecnt; c++)
+ {
+ int fail[4] = {0}, success = FALSE;
+
+ if(sprites[c].type == TYPE_ENEMY)
+ {
+ while(!(fail[0] == TRUE && fail[1] == TRUE && fail[2] == TRUE && fail[3] == TRUE) && success == FALSE)
+ {
+ float newx, newy;
+
+ if(kshoot(sprites[c].x, sprites[c].y) == TRUE)
+ {
+ if(Abs((player.x) - sprites[c].x) > 3)
+ {
+ dirx = (player.x > sprites[c].x)?1:(player.x == sprites[c].x)?0:-1;
+ }
+ else
+ {
+ dirx = 0;
+ }
+
+ if(Abs((player.y) - sprites[c].y) > 3)
+ {
+ diry = (player.y > sprites[c].y)?1:(player.y == sprites[c].y)?0:-1;
+ }
+ else
+ {
+ diry = 0;
+ }
+ success = TRUE;
+ }
+ else
+ {
+ uint num;
+
+ do
+ {
+ num = random() % 4;
+ }while(fail[num] == TRUE);
+
+ fail[num] = TRUE;
+
+ switch(num)
+ {
+ case 0:
+ dirx = 0;
+ diry = -1;
+ break;
+ case 1:
+ dirx = 1;
+ diry = 0;
+ break;
+ case 2:
+ dirx = 0;
+ diry = 1;
+ break;
+ case 3:
+ diry = 0;
+ dirx = -1;
+ break;
+ }
+ }
+
+ newx = sprites[c].x + dirx;
+ newy = sprites[c].y + diry;
+
+ if(newx < MAPSIZE && newx >= 0 && newy < MAPSIZE && newy >= 0)
+ {
+ if(solids[(int)newx][(int)newy] == UNSOLID)
+ {
+ solids[(int)sprites[c].x][(int)sprites[c].y] = UNSOLID;
+ sprites[c].x = newx;
+ sprites[c].y = newy;
+ solids[(int)sprites[c].x][(int)sprites[c].y] = SPRITE;
+ success = TRUE;
+ }
+ }
+ }
+ }
+ }
+}
+
+static void kishoot(void)
+{
+ int c;
+
+ for(c = 0; c < spritecnt; c++)
+ {
+ if(sprites[c].type == TYPE_ENEMY)
+ {
+ if(kshoot(sprites[c].x, sprites[c].y) == TRUE)
+ {
+ player.health -= 5;
+ output = 1;
+ statustimer = 0;
+ status = hitmsg;
+ BacklightOn();
+ }
+ }
+ }
+}
+
+void timer(void)
+{
+ static int ki = 0;
+ if(++ki == 10)
+ {
+ kimove();
+ ki = 0;
+ output = 1;
+ }
+ kishoot();
+}
+
+void kisetpos(float *x, float *y)
+{
+ do
+ {
+ *x = crand() % MAPSIZE + 0.5;
+ *y = crand() % MAPSIZE + 0.5;
+ }while(solids[(int)*x][(int)*y] != UNSOLID);
+
+ solids[(int)*x][(int)*y] = SPRITE;
+}
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