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I am trying to make a platformer game, but there is problem in dash.when I hit a+w then e I dashed in top left (intended behaviour) , when I hit d+w then e nothing happen In order to dash top right I need to hold d+w+e then release d or w to do a dash why this happening
Here is my Player class
class Player {
public:
float speed = 2.0f;
float velocityY = 0.0f;
float jumpForce = -10.0f;
float coefficientOfElasticity = 0.2f;
float jumpBufferTime = 0.0f;
float maxJumpHeight = 150.0f;
bool onGround = false;
Rectangle body;
float dashSpeed = 400.0f;
float dashDuration = 0.1f;
float dashCooldown = 1.0f;
float dashTimer = 0.0f;
float lastDashTime = 0.0f;
Vector2 dashStart;
Vector2 dashEnd;
bool isDashing=false;
Player(float x, float y, float w, float h) {
body = {x, y, w, h};
}
void draw() {
DrawRectangleRounded(body, 1, 1, Color({238, 235, 211, 155}));
}
void handleControl() {
if(!isDashing){
if (IsKeyDown(KEY_A)) { body.x -= speed; }
if (IsKeyDown(KEY_D)) { body.x += speed; }
}
if (IsKeyPressed(KEY_SPACE) && (onGround || jumpBufferTime > 0) && body.y >= maxJumpHeight) {
velocityY = jumpForce;
onGround = false;
}
if (IsKeyPressed(KEY_E)) {
std::cout<<"E pressed"<<std::endl;
if (!isDashing && (GetTime() - lastDashTime > dashCooldown)) {
startDash();
}
}
}
void applyPhysics(Rectangle groundRect, float gravity) {
if(!isDashing){
velocityY += gravity;
body.y += velocityY;
}
if (CheckCollisionRecs(body, groundRect)) {
body.y = groundRect.y - body.height;
velocityY = -velocityY * coefficientOfElasticity;
if (fabs(velocityY) < 1.0f) {
velocityY = 0;
onGround = true;
}
} else {
onGround = false;
}
if (isDashing) {
updateDash();
}
}
void startDash(){
bool keyA = IsKeyDown(KEY_A);
bool keyD = IsKeyDown(KEY_D);
bool keyW = IsKeyDown(KEY_W);
bool keyS = IsKeyDown(KEY_S);
Vector2 direction = {0, 0};
if (keyA) direction.x -= 1;
if (keyD) direction.x += 1;
if (keyW) direction.y -= 1;
if (keyS) direction.y += 1;
float length = sqrt(direction.x * direction.x + direction.y * direction.y);
if (length > 0) {
direction.x /= length;
direction.y /= length;
}else{
return;
}
dashStart = {body.x, body.y};
dashEnd = {body.x + direction.x * dashSpeed, body.y + direction.y * dashSpeed};
dashTimer = dashDuration;
isDashing = true;
lastDashTime = GetTime();
}
void updateDash() {
if (dashTimer > 0) {
body.x = Lerp(dashStart.x, dashEnd.x, 1.0f - (dashTimer / dashDuration));
body.y = Lerp(dashStart.y, dashEnd.y, 1.0f - (dashTimer / dashDuration));
dashTimer -= GetFrameTime();
} else {
isDashing = false;
}
}
};
Here is my full code
#include "iostream"
#include "raylib.h"
#include <cmath>
#include "raymath.h"
#define GLSL_VERSION 330
class Environment {
public:
float gravity = 0.5f;
};
class Ground {
public:
Rectangle ground;
Ground(float x, float y, float w, float h) {
ground = {x, y, w, h};
}
void updateSize(float w, float h) {
ground.width = w;
ground.y = h - 150;
}
void draw() {
DrawRectangleRounded(ground, 1, 1, Color({238, 235, 211, 55}));
}
};
class Player {
public:
float speed = 2.0f;
float velocityY = 0.0f;
float jumpForce = -10.0f;
float coefficientOfElasticity = 0.2f;
float jumpBufferTime = 0.0f;
float maxJumpHeight = 150.0f;
bool onGround = false;
Rectangle body;
float dashSpeed = 400.0f;
float dashDuration = 0.1f;
float dashCooldown = 1.0f;
float dashTimer = 0.0f;
float lastDashTime = 0.0f;
Vector2 dashStart;
Vector2 dashEnd;
bool isDashing=false;
Player(float x, float y, float w, float h) {
body = {x, y, w, h};
}
void draw() {
DrawRectangleRounded(body, 1, 1, Color({238, 235, 211, 155}));
}
void handleControl() {
if(!isDashing){
if (IsKeyDown(KEY_A)) { body.x -= speed; }
if (IsKeyDown(KEY_D)) { body.x += speed; }
}
if (IsKeyPressed(KEY_SPACE) && (onGround || jumpBufferTime > 0) && body.y >= maxJumpHeight) {
velocityY = jumpForce;
onGround = false;
}
if (IsKeyPressed(KEY_E)) {
std::cout<<"E pressed"<<std::endl;
if (!isDashing && (GetTime() - lastDashTime > dashCooldown)) {
startDash();
}
}
}
void applyPhysics(Rectangle groundRect, float gravity) {
if(!isDashing){
velocityY += gravity;
body.y += velocityY;
}
if (CheckCollisionRecs(body, groundRect)) {
body.y = groundRect.y - body.height;
velocityY = -velocityY * coefficientOfElasticity;
if (fabs(velocityY) < 1.0f) {
velocityY = 0;
onGround = true;
}
} else {
onGround = false;
}
if (isDashing) {
updateDash();
}
}
void startDash(){
bool keyA = IsKeyDown(KEY_A);
bool keyD = IsKeyDown(KEY_D);
bool keyW = IsKeyDown(KEY_W);
bool keyS = IsKeyDown(KEY_S);
Vector2 direction = {0, 0};
if (keyA) direction.x -= 1;
if (keyD) direction.x += 1;
if (keyW) direction.y -= 1;
if (keyS) direction.y += 1;
float length = sqrt(direction.x * direction.x + direction.y * direction.y);
if (length > 0) {
direction.x /= length;
direction.y /= length;
}else{
return;
}
dashStart = {body.x, body.y};
dashEnd = {body.x + direction.x * dashSpeed, body.y + direction.y * dashSpeed};
dashTimer = dashDuration;
isDashing = true;
lastDashTime = GetTime();
}
void updateDash() {
if (dashTimer > 0) {
body.x = Lerp(dashStart.x, dashEnd.x, 1.0f - (dashTimer / dashDuration));
body.y = Lerp(dashStart.y, dashEnd.y, 1.0f - (dashTimer / dashDuration));
dashTimer -= GetFrameTime();
} else {
isDashing = false;
}
}
};
int main(void) {
const int screenWidth = 1280;
const int screenHeight = 720;
InitWindow(screenWidth, screenHeight, "raylib - Physics Simulation");
Shader BackgroundShader = LoadShader(0, TextFormat("shaders/background.fs", GLSL_VERSION));
Font FunnelDisplay = LoadFont(TextFormat("/home/lamao/workdir/MechinicaRaylib/Fonts/Funnel_Display/static/FunnelDisplay-Regular.ttf"));
SetTargetFPS(60);
int monitor = GetCurrentMonitor();
int monitor_width = GetMonitorWidth(monitor);
int monitor_height = GetMonitorHeight(monitor);
bool is_full_screen = false;
Environment world;
Ground platform(0, screenHeight - 150, screenWidth , 50);
Player player(100, 100, 50, 100);
float ResolutionVector[2] = {(float)screenWidth, (float)screenHeight};
SetShaderValue(BackgroundShader, GetShaderLocation(BackgroundShader, "iResolution"), ResolutionVector, SHADER_UNIFORM_VEC2);
while (!WindowShouldClose()) {
player.handleControl();
player.applyPhysics(platform.ground, world.gravity);
if (IsKeyPressed(KEY_F)) {
is_full_screen = !is_full_screen;
if (is_full_screen) {
SetWindowSize(monitor_width, monitor_height);
ToggleFullscreen();
} else {
ToggleFullscreen();
SetWindowSize(screenWidth, screenHeight);
}
float newWidth = (float)GetScreenWidth();
float newHeight = (float)GetScreenHeight();
float ResolutionVector[2] = {newWidth, newHeight};
SetShaderValue(BackgroundShader, GetShaderLocation(BackgroundShader, "iResolution"), ResolutionVector, SHADER_UNIFORM_VEC2);
platform.updateSize(newWidth, newHeight);
}
int fps = GetFPS();
BeginDrawing();
ClearBackground(RAYWHITE);
BeginShaderMode(BackgroundShader);
DrawRectangle(0, 0, GetScreenWidth(), GetScreenHeight(), WHITE);
EndShaderMode();
DrawTextEx(FunnelDisplay, TextFormat("%d FPS", fps), Vector2({10, 10}), 32, 4, Color({238, 235, 211, 155}));
DrawTextEx(FunnelDisplay, TextFormat("<---%dx%d--->", (int)platform.ground.width, (int)platform.ground.height),
Vector2({10, platform.ground.y + platform.ground.height + 10}), 16, 4, Color({238, 235, 211, 155}));
platform.draw();
player.draw();
EndDrawing();
}
CloseWindow();
return 0;
}
I think issue is related to input, but I am unable to figure out.
本文标签： cMultiple keyboard key input in raylibStack Overflow
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