/
color_mapper.sv
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color_mapper.sv
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// main module that controls the drawing FSM, the obstacle collision detection and
// movement/drawing of all objects in the games and increments score for the game
module color_mapper(clk, reset, x, y, groundX, groundY, red, green, blue, birdROM, birdOn, start_game,
bird_up, obsOn, randNum, en, randNum2, en2, startROM, namesROM, gameoverROM, inc);
// variables required for drawing and game inputs
input logic clk, reset, start_game, bird_up;
input logic [10:0] groundX, groundY;
output logic [7:0] red, green, blue;
input logic [9:0] x;
input logic [8:0] y;
logic collides;
input logic [23:0] birdROM [0:1408];
input logic [23:0] startROM [0:10599];
input logic [23:0] namesROM [0:4799];
input logic [23:0] gameoverROM [0:5664];
logic [23:0] RGB;
input logic [9:0] randNum, randNum2;
output logic birdOn;
output logic obsOn;
output logic en, en2;
output logic inc;
// parameters for bird
parameter birdROMLen = 1453;
parameter bird_w = 44;
parameter bird_h = 31;
// parameters and logic for obstacles
logic [7:0] obs_h1;
logic [7:0] obs_h2;
assign obs_h1 = (randNum % 100) + 30; // randomizing variable
assign obs_h2 = 280 - obs_h1; // constant height sum of 280
logic [7:0] obsTwo_h1;
logic [7:0] obsTwo_h2;
assign obsTwo_h1 = (randNum2 % 70) + 120; // randomizing variable
assign obsTwo_h2 = 280 - obsTwo_h1; // constant height sum of 280
parameter obs_w = 50;
logic [10:0] x_pos, y_pos, obs1_ypos, obs1_xpos, obs2_ypos;
logic [10:0] obsTwo1_ypos, obsTwo1_xpos, obsTwo2_ypos;
// parameters for start game banner
parameter start_xpos = 300;
parameter start_ypos = 150;
parameter start_h = 53;
parameter start_w = 200;
// parameters for names banner
parameter names_xpos = 300;
parameter names_ypos = 300;
parameter names_h = 24;
parameter names_w = 200;
// parameters for game over banner
parameter gameover_xpos = 250;
parameter gameover_ypos = 200;
parameter gameover_h = 55;
parameter gameover_w = 103;
enum {s1, s2, s3} ps, ns; // drawing FSM states and game states
// assignments required
assign x_pos = 100;
assign obs1_ypos = 0;
assign obs2_ypos = groundY - obs_h2; // 400 - h2
assign obsTwo1_ypos = 0;
assign obsTwo2_ypos = groundY - obsTwo_h2;
logic [31:0] clock;
parameter whichClock = 17;
clock_divider cdiv (clk, clock);
always_ff @(posedge clk) begin
if(ps == s1) begin // game not started state
if ( (x >= groundX && y >= groundY) ) begin // draw ground
red <= 8'hEC;
green <= 8'hD3;
blue <= 8'h89;
birdOn <= 0;
end
else begin // draw sky
// E6F4FF
red <= 8'hE6;
green <= 8'hF4;
blue <= 8'hFF;
birdOn <= 0;
end
if(start_game) begin
//draw bird at 150,150
if ( (x >= x_pos && x <= x_pos + bird_w) &&
(y >= y_pos && y <= y_pos + bird_h) ) begin
red <= birdROM[(x - x_pos) + (bird_w * (y - y_pos))][23:16];
green <= birdROM[(x - x_pos) + (bird_w * (y - y_pos))][15:8];
blue <= birdROM[(x - x_pos) + (bird_w * (y - y_pos))][7:0];
birdOn <= 1;
end
end
else begin
//draw bird at 150,150
if ( (x >= 150 && x <= 150 + bird_w) &&
(y >= 150 && y <= 150 + bird_h) ) begin
red <= birdROM[(x - 150) + (bird_w * (y - 150))][23:16];
green <= birdROM[(x - 150) + (bird_w * (y - 150))][15:8];
blue <= birdROM[(x - 150) + (bird_w * (y - 150))][7:0];
birdOn <= 1;
end
end
// START GAME BANNER HERE WITH FLAPPY BIRD AND NAMES
if ( (x >= start_xpos && x < start_xpos + start_w) &&
(y >= start_ypos && y < start_ypos + start_h)) begin
red <= startROM[(x - start_xpos) + (start_w * (y - start_ypos))][23:16];
green <= startROM[(x - start_xpos) + (start_w * (y - start_ypos))][15:8];
blue <= startROM[(x - start_xpos) + (start_w * (y - start_ypos))][7:0];
end
else if ( (x >= names_xpos && x < names_xpos + names_w) &&
(y >= names_ypos && y < names_ypos + names_h)) begin
red <= namesROM[(x - names_xpos) + (names_w * (y - names_ypos))][23:16];
green <= namesROM[(x - names_xpos) + (names_w * (y - names_ypos))][15:8];
blue <= namesROM[(x - names_xpos) + (names_w * (y - names_ypos))][7:0];
end
end
else if(ps == s2) begin //play game state : y_pos always gets updated
if ( (x >= groundX && y >= groundY) ) begin // draw ground
red <= 8'hEC;
green <= 8'hD3;
blue <= 8'h89;
birdOn <= 0;
obsOn <= 0;
end
else if ((x >= x_pos && x <= x_pos + bird_w) && // draw bird
(y >= y_pos && y <= y_pos + bird_h) ) begin
red <= birdROM[(x - x_pos) + (bird_w * (y - y_pos))][23:16];
green <= birdROM[(x - x_pos) + (bird_w * (y - y_pos))][15:8];
blue <= birdROM[(x - x_pos) + (bird_w * (y - y_pos))][7:0];
birdOn <= 1;
obsOn <= 0;
end
else if((x >= obs1_xpos && x <= obs1_xpos + obs_w) && // draw obstacle1 high
(y >= obs1_ypos && y <= obs1_ypos + obs_h1)) begin
red <= 0;
green <= 8'h8F;
blue <= 8'h11;
birdOn <= 0;
obsOn <= 1;
end
else if((x >= obs1_xpos && x <= obs1_xpos + obs_w) && // draw obstacle1 low
(y >= obs2_ypos && y <= obs2_ypos + obs_h2)) begin
red <= 0;
green <= 8'h8F;
blue <= 8'h11;
birdOn <= 0;
obsOn <= 1;
end
else if((x >= obsTwo1_xpos && x <= obsTwo1_xpos + obs_w) && // draw obstacle2 high
(y >= obsTwo1_ypos && y <= obsTwo1_ypos + obsTwo_h1)) begin
red <= 0;
green <= 8'h8F;
blue <= 8'h11;
birdOn <= 0;
obsOn <= 1;
end
else if((x >= obsTwo1_xpos && x <= obsTwo1_xpos + obs_w) && // draw obstacle2 low
(y >= obsTwo2_ypos && y <= obsTwo2_ypos + obsTwo_h2)) begin
red <= 0;
green <= 8'h8F;
blue <= 8'h11;
birdOn <= 0;
obsOn <= 1;
end
else begin // sky color
// E6F4FF
red <= 8'hE6;
green <= 8'hF4;
blue <= 8'hFF;
birdOn <= 0;
obsOn <= 0;
end
end // end of state 2
else if (ps == s3) begin // game over state
if ( (x >= groundX && y >= groundY) ) begin // draw ground
red <= 8'hEC;
green <= 8'hD3;
blue <= 8'h89;
birdOn <= 0;
obsOn <= 0;
end
else if ((x >= x_pos && x <= x_pos + bird_w) && // draw bird
(y >= y_pos && y <= y_pos + bird_h) ) begin
red <= birdROM[(x - x_pos) + (bird_w * (y - y_pos))][23:16];
green <= birdROM[(x - x_pos) + (bird_w * (y - y_pos))][15:8];
blue <= birdROM[(x - x_pos) + (bird_w * (y - y_pos))][7:0];
birdOn <= 1;
obsOn <= 0;
end
else if((x >= obs1_xpos && x <= obs1_xpos + obs_w) && // draw obstacle1 high
(y >= obs1_ypos && y <= obs1_ypos + obs_h1)) begin
red <= 0;
green <= 8'h8F;
blue <= 8'h11;
birdOn <= 0;
obsOn <= 1;
end
else if((x >= obs1_xpos && x <= obs1_xpos + obs_w) && // draw obstacle1 low
(y >= obs2_ypos && y <= obs2_ypos + obs_h2)) begin
red <= 0;
green <= 8'h8F;
blue <= 8'h11;
birdOn <= 0;
obsOn <= 1;
end
else if((x >= obsTwo1_xpos && x <= obsTwo1_xpos + obs_w) && // draw obstacle2 high
(y >= obsTwo1_ypos && y <= obsTwo1_ypos + obsTwo_h1)) begin
red <= 0;
green <= 8'h8F;
blue <= 8'h11;
birdOn <= 0;
obsOn <= 1;
end
else if((x >= obsTwo1_xpos && x <= obsTwo1_xpos + obs_w) && // draw obstacle2 low
(y >= obsTwo2_ypos && y <= obsTwo2_ypos + obsTwo_h2)) begin
red <= 0;
green <= 8'h8F;
blue <= 8'h11;
birdOn <= 0;
obsOn <= 1;
end
else begin // sky color
// E6F4FF
red <= 8'hE6;
green <= 8'hF4;
blue <= 8'hFF;
birdOn <= 0;
obsOn <= 0;
end
// Draws GAME OVER banner
if ( (x >= gameover_xpos && x < gameover_xpos + gameover_w) &&
(y >= gameover_ypos && y < gameover_ypos + gameover_h)) begin
red <= gameoverROM[(x - gameover_xpos) + (gameover_w * (y - gameover_ypos))][23:16];
green <= gameoverROM[(x - gameover_xpos) + (gameover_w * (y - gameover_ypos))][15:8];
blue <= gameoverROM[(x - gameover_xpos) + (gameover_w * (y - gameover_ypos))][7:0];
end
end
end
// updates the states
always_ff @(posedge clk) begin
if(reset) ps <= s1;
else ps <= ns;
end
// Collision detection between bird and obstacles 1 & 2 or Ground
assign collides = ((((x_pos + bird_w) == obs1_xpos) && (y_pos <= (obs1_ypos + obs_h1)) && (y_pos >= obs1_ypos))
|| (((x_pos + bird_w) >= obs1_xpos) && ((x_pos) <= (obs1_xpos + obs_w)) && (y_pos <= (obs1_ypos + obs_h1)))
|| (((x_pos + bird_w) == obs1_xpos) && (y_pos <= (obs2_ypos + obs_h2)) && (y_pos >= obs2_ypos))
|| (((x_pos + bird_w) >= obs1_xpos) && ((x_pos) <= (obs1_xpos + obs_w)) && (y_pos + bird_h >= obs2_ypos)))
|| (y_pos == (groundY - bird_h))
|| ((((x_pos + bird_w) == obsTwo1_xpos) && (y_pos <= (obsTwo1_ypos + obsTwo_h1)) && (y_pos >= obsTwo1_ypos))
|| (((x_pos + bird_w) >= obsTwo1_xpos) && ((x_pos) <= (obsTwo1_xpos + obs_w)) && (y_pos <= (obsTwo1_ypos + obsTwo_h1)))
|| (((x_pos + bird_w) == obsTwo1_xpos) && (y_pos <= (obsTwo2_ypos + obsTwo_h2)) && (y_pos >= obsTwo2_ypos))
|| (((x_pos + bird_w) >= obsTwo1_xpos) && ((x_pos) <= (obsTwo1_xpos + obs_w)) && (y_pos + bird_h >= obsTwo2_ypos)));
// Updates position of the bird depending on state
always_ff @(posedge clock[whichClock]) begin
if(ps == s1) begin // bird stays still
y_pos <= 150;
obs1_xpos <= 300;
en <= 1;
obsTwo1_xpos <= 500;
inc <= 0;
if (start_game) ns <= s2;
else ns <= s1;
end
else if(ps == s2) begin
en <= 0;
// handles bird movement //
if(!collides) begin // no collision
if(bird_up) begin
// if already touch the ground in the previous state
if(y_pos == groundY - bird_h) y_pos <= groundY - bird_h;
else begin
//if on top, stay top, proceed to move top if not on top
if(y_pos > 0) y_pos <= y_pos-1;
else y_pos <= 0;
end
end
else begin
//if bird does not touch ground, go down
if(y_pos < (groundY - bird_h)) y_pos <= y_pos+1;
else y_pos <= groundY - bird_h; // stay on the ground, game over
end
// handles obstacle movement
if (obs1_xpos > 0) obs1_xpos <= obs1_xpos - 2; // move obstacle to the left when not at the left corner
else begin en <= 1; obs1_xpos <= 500; end
if (obsTwo1_xpos > 0) obsTwo1_xpos <= obsTwo1_xpos - 2;
else begin obsTwo1_xpos <= 500; end
// handles score output
if ((x_pos == obs1_xpos) | (x_pos == obsTwo1_xpos)) inc <= 1;
else inc <= 0;
ns <= s2;
end
else begin // collision
en <= 0;
y_pos <= y_pos;
obs1_xpos <= obs1_xpos; // stays still
obsTwo1_xpos <= obsTwo1_xpos;
inc <= 0;
ns <= s3;
end
end
else if (ps == s3) begin // freeze the game objects
en <= 0;
y_pos <= y_pos;
obs1_xpos <= obs1_xpos; // stays still
obsTwo1_xpos <= obsTwo1_xpos;
inc <= 0;
if (start_game) ns <= s1;
else ns <= s3;
end
end
endmodule
// divided_clocks[0] = 25MHz, [1] = 12.5Mhz, ... [23] = 3Hz, [24] = 1.5Hz,
//[25] = 0.75Hz, ...
module clock_divider (clock, divided_clocks);
input logic clock;
output logic [31:0] divided_clocks = 0;
always_ff @(posedge clock) begin
divided_clocks <= divided_clocks + 1;
end
endmodule