#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include "platform.c"

void PaintMask(float *mask, float x, float y, float color, float size) {
	for (int j = y - size / 2; j < y + size / 2; j++) {
		for (int i = x - size / 2; i < x + size / 2; i++) {
			if (i > 0 && i < WINDOW_W && j > 0 && j < WINDOW_H) {
				size_t index = i + j * WINDOW_W;
				mask[index] = color;
			}
		}
	}
}

void GameMain() {
	// Terrain generation
	float *mask = calloc(WINDOW_W * WINDOW_H, sizeof(float));
	for (int i = 0; i < 100 * WINDOW_W; i++) {
		mask[i] = 1.0;
	}

	// Player variables
	float player_x = 100;
	float player_y = 500;
	float player_vy = 0;
	float player_ay = -9.8;

	// Timer variables
	float old_t = 0.0;

	// Event handling
	int exit = 0;
	while (!exit) {
		SDL_Event event;
		while (SDL_PollEvent(&event)) {
			if (event.type == SDL_QUIT) {
				exit = 1;
			}
		}
		int mouse_x, mouse_y;
		Uint32 mouse_state = SDL_GetMouseState(&mouse_x, &mouse_y);
		float size = 100;
		if (mouse_state & SDL_BUTTON_LMASK) {
			PaintMask(mask, mouse_x, WINDOW_H - mouse_y, 1.0, size);
		} else if (mouse_state & SDL_BUTTON_RMASK) {
			PaintMask(mask, mouse_x, WINDOW_H - mouse_y, 0.0, size);
		}

		// Time delta calculation
		double new_t = GetCurrentTimestamp();
		double dt = new_t - old_t;
		old_t = new_t;

		// Player logic
		if (mask[(int)player_x + (int)player_y * WINDOW_W] == 0.0) {
			player_y += player_vy * dt;
			player_vy += player_ay * dt;
		} else {
			player_y += 1;
			player_vy = 0;
		}

		RenderScene(mask, player_x, player_y);
		SDL_Delay(1);
	}
}

int main() {
	PlatformMain(GameMain);
	return 0;
}