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Snake Maze
Posted
July 20th, 2007
by
angelae
in
Games
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Category
Games
Description
Snake game witha mazelike playing field
>> See More projects by angelae
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>> Open this project at the main Quite BASIC Page
1000 REM Snake and Dots 1010 REM Quite BASIC Game Project 1020 REM ------------------------ 1030 CLS 1040 PRINT "=== Snake and Dots ===" 1050 PRINT "UP: W" 1060 PRINT "DOWN: Z" 1070 PRINT "LEFT: A" 1080 PRINT "RIGHT: S" 2000 REM The array G holds one entry for each pixel 2010 REM (X, Y) maps to G[X + Y*25] 2020 REM A non-zero value in G means either the snake occupies the pixel or there is a dot on the pixel 2030 REM A dot is encoded by the value 5 2040 REM If the snake occupies the pixel, the value in G indicates the directionof the snakes motion 2050 REM 1=up, 2=down, 3=left, 4=right 2060 REM The Subroutines 9100, 9200, 9300, 9400 can be selected by adding 100 * D + 9000, where D is one of the directions 1, 2, 3, or 4 2070 ARRAY G 2080 REM === Initialize === 2090 LET P = 12 2100 LET Q = 12 2110 LET G[P + Q *25] = 1 2120 PLOT P, Q, "green" 2130 LET R = 12 2140 LET S = 11 2150 LET G[R + S *25] = 1 2160 PLOT R, S, "green" 2170 LET G[3 + 3*25] = 5 2180 PLOT 3,3, "orange" 2190 REM Draw the extra walls 2200 GOSUB 5000 2300 REM === Keyboard input === 2310 LET C = UPPERCASE(GETCHAR()) 2320 IF C = "W" THEN LET G[P + Q *25] = 1 2330 IF C = "Z" THEN LET G[P + Q *25] = 2 2340 IF C = "A" THEN LET G[P + Q *25] = 3 2350 IF C = "S" THEN LET G[P + Q *25] = 4 2500 REM === Move the snake === 2510 LET D = G[P + Q *25] 2520 GOSUB 9000 + 100*G[P + Q *25] 2530 LET P = P + U 2540 LET Q = Q + V 2550 IF P > 24 OR P < 0 OR Q > 24 OR Q < 0 THEN GOTO 7000 2560 IF G[P + Q *25] THEN GOTO 3000 2570 LET G[P + Q *25] = D 2573 REM Check for collision with the walls 2575 IF COLOR(P,Q) = "black" THEN GOTO 7000 2580 PLOT P, Q, "green" 2590 LET D = G[R + S *25] 2600 GOSUB 9000 + 100*G[R + S *25] 2610 LET G[R + S *25] = 0 2620 PLOT R, S, "gray" 2630 LET R = R + U 2640 LET S = S + V 2650 PAUSE (5 - LEVEL) * 75 + 50 2660 GOTO 2300 3000 REM Collision detection 3010 IF G[P + Q *25] <= 4 THEN GOTO 7000 3020 LET F = F + 1 3030 CLT 3040 PRINT "=== Snake and Dots ===" 3050 PRINT "Score: " + F 3060 LET G[P + Q *25] = D 3070 PLOT P, Q, "green" 3080 REM Add a new dot 3090 LET A = FLOOR(RAND(24)) 3100 LET B = FLOOR(RAND(24)) 3110 IF G[A + B *25] THEN GOTO 3060 3115 IF COLOR (A, B) = "black" THEN GOTO 3090 3120 PLOT A, B, "orange" 3130 LET G[A + B *25] = 5 3140 GOTO 2320 5000 REM Draw some extra walls! 5010 FOR I = 5 TO 20 5015 PLOT 5, I, "black" 5020 PLOT I, 20, "black" 5025 PLOT 20, I, "black" 5030 NEXT I 5035 FOR I = 5 TO 10 5040 PLOT I, 5, "black" 5042 NEXT I 5043 FOR I = 5 TO 15 5045 PLOT 10, I, "black" 5050 PLOT 15, I-5 5055 NEXT I 5060 RETURN 7000 REM === Game Over === 7010 CLT 7010 PRINT "=== Snake and Dots ===" 7020 PRINT " Game Over" 7030 PRINT "Total score: " + F 7040 IF F < 5 THEN PRINT "- Ouch!" 7050 IF F >= 5 AND F < 15 THEN PRINT "- Nice Try!" 7060 IF F >= 15 AND F < 50 THEN PRINT "- Way to go!" 7070 IF F >= 50 AND F < 250 THEN PRINT "- Great score!" 7080 IF F >= 250 THEN PRINT "-- Amazing score!" 7090 PRINT "=====================" 7100 END 9000 REM Subroutines mapping the direction number in D (1, 2, 3, or 4) to a vector (U, V) 9100 LET U = 0 9110 LET V = 1 9120 RETURN 9200 LET U = 0 9210 LET V = -1 9220 RETURN 9300 LET U = -1 9310 LET V = 0 9320 RETURN 9400 LET U = 1 9410 LET V = 0 9420 RETURN
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