Fix gravmap memset, and restrict_flt for temperatures

src/elements/bang.c

@@ -45,12 +45,12 @@ int update_BANG(UPDATE_FUNC_ARGS) {
 			if(!(rand()%2))
 			{
 				create_part(i, x, y, PT_FIRE);
-				parts[i].temp = (MAX_TEMP/4)+otemp;
+				parts[i].temp = restrict_flt((MAX_TEMP/4)+otemp, MIN_TEMP, MAX_TEMP);
 			}
 			else
 			{
 				create_part(i, x, y, PT_SMKE);
-				parts[i].temp = (MAX_TEMP/4)+otemp;
+				parts[i].temp = restrict_flt((MAX_TEMP/4)+otemp, MIN_TEMP, MAX_TEMP);
 			}
 		}
 		else
@@ -60,7 +60,7 @@ int update_BANG(UPDATE_FUNC_ARGS) {
 				create_part(i, x, y, PT_BOMB);
 				parts[i].tmp = 1;
 				parts[i].life = 50;
-				parts[i].temp = (MAX_TEMP/3)+otemp;
+				parts[i].temp = restrict_flt((MAX_TEMP/3)+otemp, MIN_TEMP, MAX_TEMP);
 				parts[i].vx = rand()%20-10;
 				parts[i].vy = rand()%20-10;
 			}

src/elements/ignt.c

@@ -31,7 +31,7 @@ int update_IGNT(UPDATE_FUNC_ARGS) {
 				parts[nb].life = 30;
 				parts[nb].vx = rand()%20-10;
 				parts[nb].vy = rand()%20-10;
-				parts[nb].temp = 400.0f+parts[i].temp-273.15;
+				parts[nb].temp = restrict_flt(400.0f+parts[i].temp-273.15, MIN_TEMP, MAX_TEMP);
 			}
 		}
 		else

src/main.c

@@ -1865,7 +1865,7 @@ int main(int argc, char *argv[])
 		
 		gravity_update_async(); //Check for updated velocity maps from gravity thread
 		if (!sys_pause||framerender) //Only update if not paused
-			memset(gravmap, 0, sizeof(gravmap)); //Clear the old gravmap
+			memset(gravmap, 0, (XRES/CELL)*(YRES/CELL)*sizeof(float)); //Clear the old gravmap
 
 		if (framerender) {
 			framerender = 0;