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#include <raylib.h>
#include <math.h>
#include <stdbool.h>
#define MAX_BULLET 100
#define MAX_ENEMY 100
typedef struct {
Vector2 position;
Vector2 velocity;
bool alive;
} Bullet;
typedef struct {
Vector2 position;
Vector2 movement;
} Enemy;
void updatePlayerMovement(Vector2* position, Vector2* movement, float speed, int playerWidth, int playerHeight) {
movement->x = 0.0f;
movement->y = 0.0f;
if (IsKeyDown(KEY_A))
movement->x -= 1.0f;
if (IsKeyDown(KEY_D))
movement->x += 1.0f;
if (IsKeyDown(KEY_W))
movement->y -= 1.0f;
if (IsKeyDown(KEY_S))
movement->y += 1.0f;
// Normalize the movement Vector
float magnitude = sqrt(movement->x * movement->x + movement->y * movement->y);
if (magnitude > 0)
{
movement->x /= magnitude;
movement->y /= magnitude;
}
//Keepl player in player area
if(position->x + (float)playerWidth >= GetScreenWidth())
{
position->x = GetScreenWidth()-(float)playerWidth;
}
if(position->x <= 0)
{
position->x = 0;
}
if(position->y + (float)playerWidth >= GetScreenHeight())
{
position->y = GetScreenHeight()-(float)playerHeight;
}
if(position->y <= 0)
{
position->y = 0;
}
// Update player position based on movement
float deltaTime = GetFrameTime();
position->x += movement->x * speed * deltaTime;
position->y += movement->y * speed * deltaTime;
}
void updateBullet(Bullet bullets[]) {
for(int i = 0; i < MAX_BULLET; i++)
{
bullets[i].position.x += bullets[i].velocity.x;
bullets[i].position.y += bullets[i].velocity.y;
int margin = 10;
if(bullets[i].position.x > GetScreenWidth() + margin)
{
bullets[i].alive = false;
}
if(bullets[i].position.x < 0 - margin)
{
bullets[i].alive = false;
}
if(bullets[i].position.y > GetScreenHeight() + margin)
{
bullets[i].alive = false;
}
if(bullets[i].position.y < 0 - margin)
{
bullets[i].alive = false;
}
}
}
void moveEnemy(Enemy *enemies, Vector2 playerPosition) {
}
int main(void) {
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "Wizard");
Vector2 playerPosition = { (float)screenWidth / 2, (float)screenHeight / 2 };
Vector2 playerMovementVec = { 0.0f, 0.0f };
int playerHeight = 20;
int playerWidth = 20;
float playerSpeed = 200.0f;
int playerHP = 100;
int currentBullet = 0;
int bulletSpeed = 5;
Bullet bullets[MAX_BULLET] = {0};
int currentEnemy = 0;
int numEnemyAlive = 0;
Enemy enemies[MAX_ENEMY] = {0};
SetTargetFPS(240);
// Main game loop
while (!WindowShouldClose()) { // Detect window close button or ESC key
updatePlayerMovement(&playerPosition, &playerMovementVec, playerSpeed, playerWidth, playerHeight);
Vector2 mousePosition = GetMousePosition();
float rotationAngle = atan2f(mousePosition.y - (playerPosition.y + (float)playerHeight/2), mousePosition.x - (playerPosition.x + (float)playerWidth/2)) * RAD2DEG;
int length = 50;
Vector2 endPoint = { playerPosition.x + (float)playerWidth/2 + length * cosf(rotationAngle * DEG2RAD), playerPosition.y + (float)playerHeight/2 + length * sinf(rotationAngle * DEG2RAD) };
if(IsMouseButtonPressed(MOUSE_LEFT_BUTTON)) {
Vector2 direction = {mousePosition.x - (playerPosition.x + (float)playerWidth/2), mousePosition.y - (playerPosition.y + (float)playerHeight/2)};
float length = sqrtf(direction.x * direction.x + direction.y * direction.y);
if (length != 0) {
direction.x /= length;
direction.y /= length;
}
Vector2 bulletVelocity = {direction.x * bulletSpeed, direction.y * bulletSpeed};
bullets[currentBullet].position = endPoint;
bullets[currentBullet].velocity = bulletVelocity;
bullets[currentBullet].alive = true;
currentBullet = (currentBullet + 1) % MAX_BULLET;
}
updateBullet(bullets);
// Draw
BeginDrawing();
ClearBackground(RAYWHITE);
//Draw background lines
for(int i=0; i < GetScreenWidth(); i += 50) {
DrawLineEx((Vector2){i, 0}, (Vector2){i, GetScreenHeight()}, 1, BLACK);
}
for(int i=0; i < GetScreenHeight(); i += 50) {
DrawLineEx((Vector2){0, i}, (Vector2){GetScreenWidth(), i}, 1, BLACK);
}
//Draw player and "weapon"
DrawLineEx((Vector2){playerPosition.x+(float)playerWidth/2, playerPosition.y+(float)playerHeight/2}, endPoint, 5, RED);
DrawRectangle(playerPosition.x, playerPosition.y, playerWidth, playerHeight, GREEN);
//Draw debug info
DrawText(TextFormat("Current FPS: %i", (int)(1.0f / GetFrameTime())), 20, 20, 10, GREEN);
DrawText(TextFormat("Input: (%.2f, %.2f)", playerMovementVec.x, playerMovementVec.y), 20, 30, 10, RED);
DrawText(TextFormat("Player Position: (%.0f, %.0f)", playerPosition.x, playerPosition.y), 20, 40, 10, RED);
DrawText(TextFormat("Bullet Count: %i", currentBullet), 20, 50, 10, GREEN);
DrawText(TextFormat("HP: %i", playerHP), 20, 60, 10, RED);
//Draw bullets
for(int i=0; i < MAX_BULLET; i++) {
DrawCircleV(bullets[i].position, 2, RED);
}
EndDrawing();
}
// De-Initialization
CloseWindow(); // Close window and OpenGL context
return 0;
}
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