-
Notifications
You must be signed in to change notification settings - Fork 0
/
Physics.vhd
157 lines (145 loc) · 4.76 KB
/
Physics.vhd
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
library ieee;
use ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
use ieee.std_logic_arith.all;
use ieee.numeric_std.all;
use work.Functions.all;
entity Physics is
port (
clk60, clk100, rst, pause: in std_logic; --游戏端时钟60Hz，复位（恢复初态），暂停（0为暂停，1为正常）
-- Interfaces with SceneReader
query_sx, query_sy: out MapXY;
pos_type: in TPos;
start_x, start_y: in MapXY;
gate2_x, gate2_y: in MapXY;
ready: in std_logic;
unit_size: in natural; --每格的边长
ball_radius: in natural;--球的半径
ax, ay: in integer; --加速度
vx, vy: buffer integer;
px, py: buffer integer; --位置
vx1, vy1: in integer;
px1, py1: in integer; --位置
score: buffer integer; --分
result: buffer TResult; --结果
show_radius: buffer natural
);
end entity;
architecture arch of Physics is
signal temp_px, temp_py, temp_vx, temp_vy, temp_sceneX, temp_sceneY, temp_remX, temp_remY, temp_temp_vx, temp_temp_vy: integer;
signal temp_scene: integer;
signal sx, sy: natural;
signal temp_wallx, temp_wally, wall, wallx, wally: boolean;
signal temp_type: TPos;
signal clk_num: integer := 0;
signal clk1000: std_logic;
signal near, last_near, collide: boolean;
constant vmax: natural := 4096;
function s2p (s: MapXY; unit_size: natural) return natural is
begin
return s * unit_size + unit_size / 2;
end function;
begin
near <= in_circle(px - px1, py - py1, ball_radius * 2);
collide <= not last_near and near;
wall <= isWall(temp_type);
temp_wallx <= temp_sceneX /= sx and wall;
temp_wally <= temp_sceneY /= sy and wall;
wallx <= (not temp_wally and temp_wallx) or (temp_wally and temp_wallx and (abs(vx) < abs(vy) / 4 or not (abs(vx) / 4 >= abs(vy))));
wally <= (not temp_wallx and temp_wally) or (temp_wallx and temp_wally and (not(abs(vx) < abs(vy) / 4) or (abs(vx) / 4 >= abs(vy))));
temp_px <= s2p(gate2_x, unit_size) when temp_type = Gate1 else px + vx;
temp_py <= s2p(gate2_y, unit_size) when temp_type = Gate1 else py + vy;
temp_temp_vx <= -vx when wallx and temp_type = IronWall else
-(vx / 2 + temp_remX) when wallx and temp_type = GlassWall else
-(vx / 10 + 2 * temp_remX) when wallx and temp_type = WoodWall else
vx + ax when temp_type = Ice else
vx + ax - temp_remX when temp_type = Land else
vx + ax - temp_remX * 2 when temp_type = Pin else
-2 * vx when (temp_type = SpringL and temp_remX >= 0) or (temp_type = SpringR and temp_remX <= 0) else vx + ax;
temp_temp_vy <= -vy when wally and temp_type = IronWall else
-(vy / 2 + temp_remY) when wally and temp_type = GlassWall else
-(vy / 10 + 2 * temp_remY) when wally and temp_type = WoodWall else
vy + ay when temp_type = Ice else
vy + ay - temp_remY when temp_type = Land else
vy + ay - temp_remY * 2 when temp_type = Pin else
-2 * vy when (temp_type = SpringU and temp_remY >= 0) or (temp_type = SpringD and temp_remY <= 0) else vy + ay;
temp_sceneX <= temp_px / unit_size;
temp_sceneY <= temp_py / unit_size;
temp_remX <= 3 when vx > 0 else
-3 when vx < 0 else 0;
temp_remY <= 3 when vy > 0 else
-3 when vy < 0 else 0;
process (temp_temp_vx, temp_temp_vy)
variable vx, vy: integer;
constant acc: natural := 10;
begin
vx := temp_temp_vx;
vy := temp_temp_vy;
if temp_type = AccR then
vx := vx + acc;
elsif temp_type = AccL then
vx := vx - acc;
elsif temp_type = AccD then
vy := vy + acc;
elsif temp_type = AccU then
vy := vy - acc;
end if;
if collide then
vx := vx1;
vy := vy1;
end if;
vx := limit(vx, -vmax, vmax);
vy := limit(vy, -vmax, vmax);
temp_vx <= vx;
temp_vy <= vy;
end process;
-- query pos type
query_sx <= temp_sceneX;
query_sy <= temp_sceneY;
temp_type <= pos_type;
process(clk60)
variable last_ready: std_logic := '0';
begin
if rst = '0' then
px <= 0;
py <= 0;
vx <= 0;
vy <= 0;
score <= 0;
result <= Normal;
show_radius <= ball_radius;
last_ready := '0';
elsif falling_edge(clk60) then
if last_ready = '0' and ready = '1' then
px <= s2p(start_x, unit_size);
py <= s2p(start_y, unit_size);
show_radius <= ball_radius;
elsif pause = '0' or result = Die or result = Win then
else
if not wall then
px <= temp_px;
py <= temp_py;
end if;
vx <= temp_vx;
vy <= temp_vy;
sx <= temp_sceneX;
sy <= temp_sceneY;
if temp_type = Hole then
show_radius <= show_radius - 1;
if show_radius < ball_radius then
result <= Die;
end if;
elsif temp_type = EndPoint then
result <= Win;
score <= score + 1;
show_radius <= ball_radius;
else
score <= score + 1;
show_radius <= ball_radius;
end if;
end if;
last_ready := ready;
last_near <= near;
end if;
end process;
end architecture ; -- arch