Diff: city_landscape.cpp

Revision:

0:09aa1ecd6c39

Child:

1:5724f2947554

diff -r 000000000000 -r 09aa1ecd6c39 city_landscape.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/city_landscape.cpp	Wed Jun 24 21:09:03 2020 +0000
@@ -0,0 +1,104 @@
+//=================================================================
+// The file is for module "city landscape"
+//
+// Copyright 2020 Georgia Tech.  All rights reserved.
+// The materials provided by the instructor in this course are for
+// the use of the students currently enrolled in the course.
+// Copyrighted course materials may not be further disseminated.
+// This file must not be made publicly available anywhere.
+//==================================================================
+
+#include "city_landscape_private.h"
+
+CITY city_record[MAX_NUM_CITY];
+int building_height[NUM_BUILDING];
+
+// See the comments in city_landscape_public.h
+void city_landscape_init(int num_city) {
+    int i;
+    int city_distance = (SIZE_X-CITY_TO_SCREEN_MARGIN*2)/num_city;
+    
+    // All interface for user should have error checking
+    ASSERT_P(num_city<=MAX_NUM_CITY,ERROR_CITY_NUMBER);
+    
+    //initialize the record of cities
+    for(i=0;i<MAX_NUM_CITY;i++){
+        if(i<num_city){
+            // See the definition of CITY structure in city_landscape.h
+            city_record[i].y = REVERSE_Y(LANDSCAPE_HEIGHT)-1;
+            city_record[i].x = i*city_distance + CITY_TO_SCREEN_MARGIN;
+            city_record[i].width = CITY_WIDTH;            // the width is fix number
+            city_record[i].height = MAX_BUILDING_HEIGHT;  // the height is fix number
+            city_record[i].status = EXIST;
+        }
+        else{
+            city_record[i].status = DEMOLISHED;
+        }
+    }
+    
+    //initialize the height of the buildings
+    for(i=0;i<NUM_BUILDING;i++){
+        building_height[i] = (rand() % MAX_BUILDING_HEIGHT*2/3)+MAX_BUILDING_HEIGHT/3;
+    }
+    
+    //draw city landscape on the screen
+    draw_cities();
+    draw_landscape();
+
+}
+
+CITY city_get_info(int index){
+    // All interface for user should have error checking
+    ASSERT_P(index<MAX_NUM_CITY,ERROR_CITY_INDEX_GET_INFO);
+    
+    return city_record[index];
+}
+
+void city_demolish(int index){
+    int j;
+    int city_x, city_y, building_x, building_y;
+    int height;
+    
+    // error checking. the index must smaller than its max.
+    ASSERT_P(index<MAX_NUM_CITY,ERROR_CITY_INDEX_DEMOLISH);
+    
+    // remove the record
+    city_record[index].status = DEMOLISHED;
+    
+    // use the background color to cover the city
+    city_x = city_record[index].x;
+    city_y = city_record[index].y;
+    for(j=0;j<NUM_BUILDING;j++){
+        building_x = city_x+j*BUILDING_WIDTH;
+        building_y = city_y;
+        height = building_y-building_height[j]+1;
+        uLCD.filled_rectangle(building_x, building_y, building_x+BUILDING_WIDTH-1, height, BACKGROUND_COLOR);
+    }
+}
+
+void draw_cities(void){
+    int i,j;
+    int city_x, city_y, building_x, building_y;
+    int height;
+    
+    for(i=0;i<MAX_NUM_CITY;i++){
+        
+        // draw each city
+        if(city_record[i].status==EXIST){
+            city_x = city_record[i].x;
+            city_y = city_record[i].y;
+            
+            // draw each building
+            for(j=0;j<NUM_BUILDING;j++){
+                building_x = city_x+j*BUILDING_WIDTH;
+                building_y = city_y;
+                height = building_y-building_height[j]+1;
+                uLCD.filled_rectangle(building_x, building_y, building_x+BUILDING_WIDTH-1, height, BUILDING_COLOR);
+            }
+        }
+    }
+}
+
+void draw_landscape(void){
+    uLCD.filled_rectangle(0, SIZE_Y-1, SIZE_X-1, REVERSE_Y(LANDSCAPE_HEIGHT), LANDSCAPE_COLOR);
+}
\ No newline at end of file