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colors.py

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+BLACK = (0, 0, 0)
+WHITE = (255, 255, 255)
+GREEN = (0, 255, 0)
+RED = (255, 0, 0)
+BROWN = (140, 95, 65)
+DBROWN = (65, 50, 20)
+YELLOW = (255, 255, 0)
+BLUE = (0, 0, 255)

field.py

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+import pygame
+from colors import *
+from dimensions import *
+
+class Field(pygame.sprite.Sprite):
+    def __init__(self, row, column):
+        super(Field, self).__init__()
+        self.surf = pygame.Surface((WIDTH, HEIGHT))
+        self.surf.fill(BROWN)
+        self.rect = self.surf.get_rect(
+            topleft=((MARGIN + WIDTH) * row + MARGIN, (MARGIN + HEIGHT) * column + MARGIN))
+        self.position = [row, column]
+        self.hydration = 0
+        self.isRocky = False
+        self.planted = 0
+        self.ferility = 1
+
+    def hydrate(self):
+        if self.hydration <= 3:
+            self.hydration += 1
+            if self.hydration == 0:
+                self.surf.fill(BROWN)
+            if self.hydration == 1:
+                self.surf.fill(YELLOW)
+            if self.hydration == 2:
+                self.surf.fill(GREEN)
+            if self.hydration == 3:
+                self.surf.fill(BLUE)
+    
+    def dehydrate(self):
+        if self.hydration > 0:
+            self.hydration -= 1
+            if self.hydration == 0:
+                self.surf.fill(BROWN)
+            if self.hydration == 1:
+                self.surf.fill(YELLOW)
+            if self.hydration == 2:
+                self.surf.fill(GREEN)
+            if self.hydration == 3:
+                self.surf.fill(BLUE)
+    
+    def free(self):
+        self.planted = 0

plant.py

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+import pygame
+from colors import *
+from dimensions import *
+from sprites import *
+
+class Plant(pygame.sprite.Sprite):
+    def __init__(self, field, species):
+        super(Plant, self).__init__()
+        self.surf = plant_img_0
+        self.position = field.position
+        self.field = field
+        self.rect = self.surf.get_rect(
+            topleft=((MARGIN + WIDTH) * self.position[0] + MARGIN, (MARGIN + HEIGHT) * self.position[1] + MARGIN))
+        self.growth = 0
+        self.isHealthy = True
+        self.species = species
+        if self.species == "beetroot":
+            self.growth_speed = 1.5
+            self.humidity_needed = 2
+        elif self.species == "wheat":
+            self.growth_speed = 1
+            self.humidity_needed = 1
+        elif self.species == "cotton":
+            self.growth_speed = 0.8
+            self.humidity_needed = 1
+
+
+    def grow(self):
+        if self.field.hydration >= self.humidity_needed:
+            self.growth += self.growth_speed
+        if self.field.hydration == 0:
+            self.growth -= self.growth_speed
+        if self.growth > 4:
+            self.growth = 4
+        if self.growth < 0:
+            self.growth = 0
+        if self.growth == 0:
+            self.surf = plant_img_0
+        elif self.growth == 1:
+            self.surf = plant_img_1
+        elif self.growth == 2:
+            self.surf = plant_img_2
+        elif self.growth == 3:
+            self.surf = plant_img_3

sprites.py

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+import pygame
+import random
+import os
+
+# set up asset folders
+project_folder = os.path.dirname(__file__)
+sprites_folder = os.path.join(project_folder, 'sprites')
+plant_img_0 = pygame.image.load(os.path.join(sprites_folder, 'plant0.png'))
+plant_img_1 = pygame.image.load(os.path.join(sprites_folder, 'plant1.png'))
+plant_img_2 = pygame.image.load(os.path.join(sprites_folder, 'plant2.png'))
+plant_img_3 = pygame.image.load(os.path.join(sprites_folder, 'plant3.png'))

tractor.py

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+import pygame
+
+from pygame.locals import (
+    K_UP,
+    K_DOWN,
+    K_LEFT,
+    K_RIGHT,
+    K_ESCAPE,
+    K_SPACE,
+    K_c,
+    KEYDOWN,
+    QUIT
+)
+
+from dimensions import *
+from colors import *
+
+class Tractor(pygame.sprite.Sprite):
+    def __init__(self, field):
+        super(Tractor, self).__init__()
+        self.surf = pygame.Surface((WIDTH, HEIGHT))
+        self.surf.fill(RED)
+        self.position = field.position
+        self.rect = self.surf.get_rect(
+            topleft=((MARGIN + WIDTH) * self.position[0] + MARGIN, (MARGIN + HEIGHT) * self.position[1] + MARGIN))
+        self.field = field
+        
+    def update(self, pressed_keys):
+        if pressed_keys[K_UP]:
+            self.rect.move_ip(0, -(HEIGHT + MARGIN))
+            self.position[1] -= 1
+            if self.rect.top <= MARGIN:
+                self.rect.top = MARGIN
+                self.position[1] = 0
+        if pressed_keys[K_DOWN]:
+            self.rect.move_ip(0, HEIGHT + MARGIN)
+            self.position[1] += 1
+            if self.rect.bottom >= SCREEN_HEIGHT-MARGIN:
+                self.rect.bottom = SCREEN_HEIGHT-MARGIN
+                self.position[1] = GSIZE-1
+        if pressed_keys[K_LEFT]:
+            self.rect.move_ip(-(WIDTH + MARGIN), 0)
+            self.position[0] -= 1
+            if self.rect.left < MARGIN:
+                self.rect.left = MARGIN
+                self.position[0] = 0
+        if pressed_keys[K_RIGHT]:
+            self.rect.move_ip(WIDTH + MARGIN, 0)
+            self.position[0] += 1
+            if self.rect.right > SCREEN_WIDTH-MARGIN:
+                self.rect.right = SCREEN_WIDTH-MARGIN
+                self.position[0] = GSIZE-1
+
+    def hydrate(self, field, pressed_keys):
+        if pressed_keys[K_SPACE]:
+            field[self.position[0]][self.position[1]].hydrate()
+
+    def cut(self, field, pressed_keys):
+        if pressed_keys[K_c]:
+            field[self.position[0]][self.position[1]].free()